author | prr |
Thu, 07 Dec 2017 11:55:06 -0800 | |
changeset 48274 | 51772bf1fb0c |
parent 47216 | 71c04702a3d5 |
child 50352 | 25db2c8f3cf8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright © 2007,2008,2009,2010 Red Hat, Inc. |
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* Copyright © 2010,2012 Google, Inc. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Red Hat Author(s): Behdad Esfahbod |
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* Google Author(s): Behdad Esfahbod |
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*/ |
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|
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#ifndef HB_OT_LAYOUT_GSUBGPOS_PRIVATE_HH |
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#define HB_OT_LAYOUT_GSUBGPOS_PRIVATE_HH |
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#include "hb-private.hh" |
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#include "hb-debug.hh" |
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#include "hb-buffer-private.hh" |
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#include "hb-ot-layout-gdef-table.hh" |
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#include "hb-set-private.hh" |
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namespace OT { |
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struct hb_closure_context_t : |
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hb_dispatch_context_t<hb_closure_context_t, hb_void_t, HB_DEBUG_CLOSURE> |
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{ |
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inline const char *get_name (void) { return "CLOSURE"; } |
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typedef return_t (*recurse_func_t) (hb_closure_context_t *c, unsigned int lookup_index); |
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template <typename T> |
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inline return_t dispatch (const T &obj) { obj.closure (this); return HB_VOID; } |
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static return_t default_return_value (void) { return HB_VOID; } |
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bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return false; } |
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return_t recurse (unsigned int lookup_index) |
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{ |
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if (unlikely (nesting_level_left == 0 || !recurse_func)) |
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return default_return_value (); |
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|
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nesting_level_left--; |
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recurse_func (this, lookup_index); |
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nesting_level_left++; |
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return HB_VOID; |
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} |
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hb_face_t *face; |
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hb_set_t *glyphs; |
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recurse_func_t recurse_func; |
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unsigned int nesting_level_left; |
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unsigned int debug_depth; |
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hb_closure_context_t (hb_face_t *face_, |
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hb_set_t *glyphs_, |
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unsigned int nesting_level_left_ = HB_MAX_NESTING_LEVEL) : |
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face (face_), |
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glyphs (glyphs_), |
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recurse_func (nullptr), |
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nesting_level_left (nesting_level_left_), |
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debug_depth (0) {} |
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void set_recurse_func (recurse_func_t func) { recurse_func = func; } |
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}; |
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struct hb_would_apply_context_t : |
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hb_dispatch_context_t<hb_would_apply_context_t, bool, HB_DEBUG_WOULD_APPLY> |
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{ |
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inline const char *get_name (void) { return "WOULD_APPLY"; } |
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template <typename T> |
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inline return_t dispatch (const T &obj) { return obj.would_apply (this); } |
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static return_t default_return_value (void) { return false; } |
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bool stop_sublookup_iteration (return_t r) const { return r; } |
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hb_face_t *face; |
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const hb_codepoint_t *glyphs; |
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unsigned int len; |
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bool zero_context; |
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unsigned int debug_depth; |
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hb_would_apply_context_t (hb_face_t *face_, |
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const hb_codepoint_t *glyphs_, |
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unsigned int len_, |
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bool zero_context_) : |
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face (face_), |
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glyphs (glyphs_), |
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len (len_), |
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zero_context (zero_context_), |
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debug_depth (0) {} |
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}; |
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struct hb_collect_glyphs_context_t : |
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hb_dispatch_context_t<hb_collect_glyphs_context_t, hb_void_t, HB_DEBUG_COLLECT_GLYPHS> |
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{ |
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inline const char *get_name (void) { return "COLLECT_GLYPHS"; } |
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typedef return_t (*recurse_func_t) (hb_collect_glyphs_context_t *c, unsigned int lookup_index); |
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template <typename T> |
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inline return_t dispatch (const T &obj) { obj.collect_glyphs (this); return HB_VOID; } |
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static return_t default_return_value (void) { return HB_VOID; } |
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bool stop_sublookup_iteration (return_t r HB_UNUSED) const { return false; } |
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return_t recurse (unsigned int lookup_index) |
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{ |
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if (unlikely (nesting_level_left == 0 || !recurse_func)) |
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return default_return_value (); |
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/* Note that GPOS sets recurse_func to nullptr already, so it doesn't get |
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* past the previous check. For GSUB, we only want to collect the output |
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* glyphs in the recursion. If output is not requested, we can go home now. |
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* |
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* Note further, that the above is not exactly correct. A recursed lookup |
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* is allowed to match input that is not matched in the context, but that's |
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* not how most fonts are built. It's possible to relax that and recurse |
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* with all sets here if it proves to be an issue. |
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*/ |
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131 |
|
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if (output == hb_set_get_empty ()) |
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return HB_VOID; |
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134 |
|
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/* Return if new lookup was recursed to before. */ |
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if (recursed_lookups->has (lookup_index)) |
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return HB_VOID; |
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138 |
|
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hb_set_t *old_before = before; |
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hb_set_t *old_input = input; |
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hb_set_t *old_after = after; |
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before = input = after = hb_set_get_empty (); |
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143 |
|
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nesting_level_left--; |
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recurse_func (this, lookup_index); |
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nesting_level_left++; |
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147 |
|
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before = old_before; |
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149 |
input = old_input; |
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after = old_after; |
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151 |
|
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recursed_lookups->add (lookup_index); |
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153 |
|
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return HB_VOID; |
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155 |
} |
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156 |
|
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hb_face_t *face; |
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hb_set_t *before; |
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hb_set_t *input; |
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hb_set_t *after; |
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hb_set_t *output; |
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recurse_func_t recurse_func; |
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hb_set_t *recursed_lookups; |
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unsigned int nesting_level_left; |
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unsigned int debug_depth; |
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166 |
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167 |
hb_collect_glyphs_context_t (hb_face_t *face_, |
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hb_set_t *glyphs_before, /* OUT. May be nullptr */ |
169 |
hb_set_t *glyphs_input, /* OUT. May be nullptr */ |
|
170 |
hb_set_t *glyphs_after, /* OUT. May be nullptr */ |
|
171 |
hb_set_t *glyphs_output, /* OUT. May be nullptr */ |
|
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unsigned int nesting_level_left_ = HB_MAX_NESTING_LEVEL) : |
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face (face_), |
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before (glyphs_before ? glyphs_before : hb_set_get_empty ()), |
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input (glyphs_input ? glyphs_input : hb_set_get_empty ()), |
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after (glyphs_after ? glyphs_after : hb_set_get_empty ()), |
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177 |
output (glyphs_output ? glyphs_output : hb_set_get_empty ()), |
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recurse_func (nullptr), |
179 |
recursed_lookups (nullptr), |
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nesting_level_left (nesting_level_left_), |
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debug_depth (0) |
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182 |
{ |
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recursed_lookups = hb_set_create (); |
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184 |
} |
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185 |
~hb_collect_glyphs_context_t (void) |
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186 |
{ |
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hb_set_destroy (recursed_lookups); |
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188 |
} |
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189 |
|
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190 |
void set_recurse_func (recurse_func_t func) { recurse_func = func; } |
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191 |
}; |
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192 |
|
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193 |
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194 |
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195 |
/* XXX Can we remove this? */ |
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196 |
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template <typename set_t> |
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struct hb_add_coverage_context_t : |
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hb_dispatch_context_t<hb_add_coverage_context_t<set_t>, const Coverage &, HB_DEBUG_GET_COVERAGE> |
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200 |
{ |
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inline const char *get_name (void) { return "GET_COVERAGE"; } |
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typedef const Coverage &return_t; |
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template <typename T> |
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inline return_t dispatch (const T &obj) { return obj.get_coverage (); } |
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205 |
static return_t default_return_value (void) { return Null(Coverage); } |
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206 |
bool stop_sublookup_iteration (return_t r) const |
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{ |
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208 |
r.add_coverage (set); |
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return false; |
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210 |
} |
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211 |
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212 |
hb_add_coverage_context_t (set_t *set_) : |
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213 |
set (set_), |
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debug_depth (0) {} |
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215 |
|
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set_t *set; |
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217 |
unsigned int debug_depth; |
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218 |
}; |
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219 |
|
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220 |
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221 |
struct hb_apply_context_t : |
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222 |
hb_dispatch_context_t<hb_apply_context_t, bool, HB_DEBUG_APPLY> |
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223 |
{ |
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224 |
struct matcher_t |
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225 |
{ |
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inline matcher_t (void) : |
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lookup_props (0), |
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ignore_zwnj (false), |
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229 |
ignore_zwj (false), |
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mask (-1), |
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231 |
#define arg1(arg) (arg) /* Remove the macro to see why it's needed! */ |
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syllable arg1(0), |
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233 |
#undef arg1 |
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match_func (nullptr), |
235 |
match_data (nullptr) {}; |
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236 |
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237 |
typedef bool (*match_func_t) (hb_codepoint_t glyph_id, const USHORT &value, const void *data); |
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238 |
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inline void set_ignore_zwnj (bool ignore_zwnj_) { ignore_zwnj = ignore_zwnj_; } |
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inline void set_ignore_zwj (bool ignore_zwj_) { ignore_zwj = ignore_zwj_; } |
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inline void set_lookup_props (unsigned int lookup_props_) { lookup_props = lookup_props_; } |
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inline void set_mask (hb_mask_t mask_) { mask = mask_; } |
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inline void set_syllable (uint8_t syllable_) { syllable = syllable_; } |
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inline void set_match_func (match_func_t match_func_, |
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const void *match_data_) |
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{ match_func = match_func_; match_data = match_data_; } |
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247 |
|
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enum may_match_t { |
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MATCH_NO, |
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MATCH_YES, |
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MATCH_MAYBE |
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252 |
}; |
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253 |
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inline may_match_t may_match (const hb_glyph_info_t &info, |
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const USHORT *glyph_data) const |
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256 |
{ |
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if (!(info.mask & mask) || |
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258 |
(syllable && syllable != info.syllable ())) |
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259 |
return MATCH_NO; |
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260 |
|
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261 |
if (match_func) |
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262 |
return match_func (info.codepoint, *glyph_data, match_data) ? MATCH_YES : MATCH_NO; |
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263 |
|
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264 |
return MATCH_MAYBE; |
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265 |
} |
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266 |
|
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267 |
enum may_skip_t { |
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268 |
SKIP_NO, |
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269 |
SKIP_YES, |
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270 |
SKIP_MAYBE |
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271 |
}; |
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272 |
|
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273 |
inline may_skip_t |
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may_skip (const hb_apply_context_t *c, |
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275 |
const hb_glyph_info_t &info) const |
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276 |
{ |
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277 |
if (!c->check_glyph_property (&info, lookup_props)) |
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278 |
return SKIP_YES; |
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279 |
|
48274 | 280 |
if (unlikely (_hb_glyph_info_is_default_ignorable_and_not_hidden (&info) && |
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281 |
(ignore_zwnj || !_hb_glyph_info_is_zwnj (&info)) && |
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282 |
(ignore_zwj || !_hb_glyph_info_is_zwj (&info)))) |
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283 |
return SKIP_MAYBE; |
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284 |
|
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285 |
return SKIP_NO; |
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286 |
} |
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287 |
|
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288 |
protected: |
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289 |
unsigned int lookup_props; |
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290 |
bool ignore_zwnj; |
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291 |
bool ignore_zwj; |
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292 |
hb_mask_t mask; |
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293 |
uint8_t syllable; |
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294 |
match_func_t match_func; |
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295 |
const void *match_data; |
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296 |
}; |
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297 |
|
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298 |
struct skipping_iterator_t |
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299 |
{ |
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300 |
inline void init (hb_apply_context_t *c_, bool context_match = false) |
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301 |
{ |
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302 |
c = c_; |
48274 | 303 |
match_glyph_data = nullptr; |
304 |
matcher.set_match_func (nullptr, nullptr); |
|
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305 |
matcher.set_lookup_props (c->lookup_props); |
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306 |
/* Ignore ZWNJ if we are matching GSUB context, or matching GPOS. */ |
48274 | 307 |
matcher.set_ignore_zwnj (c->table_index == 1 || (context_match && c->auto_zwnj)); |
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308 |
/* Ignore ZWJ if we are matching GSUB context, or matching GPOS, or if asked to. */ |
48274 | 309 |
matcher.set_ignore_zwj (c->table_index == 1 || (context_match || c->auto_zwj)); |
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310 |
matcher.set_mask (context_match ? -1 : c->lookup_mask); |
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311 |
} |
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312 |
inline void set_lookup_props (unsigned int lookup_props) |
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313 |
{ |
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314 |
matcher.set_lookup_props (lookup_props); |
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315 |
} |
40435 | 316 |
inline void set_match_func (matcher_t::match_func_t match_func_, |
317 |
const void *match_data_, |
|
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318 |
const USHORT glyph_data[]) |
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319 |
{ |
40435 | 320 |
matcher.set_match_func (match_func_, match_data_); |
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321 |
match_glyph_data = glyph_data; |
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322 |
} |
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323 |
|
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324 |
inline void reset (unsigned int start_index_, |
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|
325 |
unsigned int num_items_) |
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|
326 |
{ |
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|
327 |
idx = start_index_; |
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|
328 |
num_items = num_items_; |
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|
329 |
end = c->buffer->len; |
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|
330 |
matcher.set_syllable (start_index_ == c->buffer->idx ? c->buffer->cur().syllable () : 0); |
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|
331 |
} |
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|
332 |
|
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|
333 |
inline void reject (void) { num_items++; match_glyph_data--; } |
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|
334 |
|
48274 | 335 |
inline matcher_t::may_skip_t |
336 |
may_skip (const hb_apply_context_t *c, |
|
337 |
const hb_glyph_info_t &info) const |
|
338 |
{ |
|
339 |
return matcher.may_skip (c, info); |
|
340 |
} |
|
341 |
||
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342 |
inline bool next (void) |
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|
343 |
{ |
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|
344 |
assert (num_items > 0); |
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|
345 |
while (idx + num_items < end) |
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|
346 |
{ |
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|
347 |
idx++; |
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|
348 |
const hb_glyph_info_t &info = c->buffer->info[idx]; |
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|
349 |
|
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|
350 |
matcher_t::may_skip_t skip = matcher.may_skip (c, info); |
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|
351 |
if (unlikely (skip == matcher_t::SKIP_YES)) |
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|
352 |
continue; |
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changeset
|
353 |
|
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|
354 |
matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data); |
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|
355 |
if (match == matcher_t::MATCH_YES || |
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|
356 |
(match == matcher_t::MATCH_MAYBE && |
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|
357 |
skip == matcher_t::SKIP_NO)) |
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|
358 |
{ |
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parents:
diff
changeset
|
359 |
num_items--; |
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parents:
diff
changeset
|
360 |
match_glyph_data++; |
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parents:
diff
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|
361 |
return true; |
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parents:
diff
changeset
|
362 |
} |
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|
363 |
|
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changeset
|
364 |
if (skip == matcher_t::SKIP_NO) |
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parents:
diff
changeset
|
365 |
return false; |
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parents:
diff
changeset
|
366 |
} |
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parents:
diff
changeset
|
367 |
return false; |
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parents:
diff
changeset
|
368 |
} |
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|
369 |
inline bool prev (void) |
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|
370 |
{ |
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parents:
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changeset
|
371 |
assert (num_items > 0); |
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|
372 |
while (idx >= num_items) |
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|
373 |
{ |
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parents:
diff
changeset
|
374 |
idx--; |
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|
375 |
const hb_glyph_info_t &info = c->buffer->out_info[idx]; |
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parents:
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|
376 |
|
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|
377 |
matcher_t::may_skip_t skip = matcher.may_skip (c, info); |
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|
378 |
if (unlikely (skip == matcher_t::SKIP_YES)) |
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parents:
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|
379 |
continue; |
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parents:
diff
changeset
|
380 |
|
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|
381 |
matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data); |
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parents:
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|
382 |
if (match == matcher_t::MATCH_YES || |
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parents:
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changeset
|
383 |
(match == matcher_t::MATCH_MAYBE && |
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parents:
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|
384 |
skip == matcher_t::SKIP_NO)) |
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parents:
diff
changeset
|
385 |
{ |
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parents:
diff
changeset
|
386 |
num_items--; |
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prr
parents:
diff
changeset
|
387 |
match_glyph_data++; |
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prr
parents:
diff
changeset
|
388 |
return true; |
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prr
parents:
diff
changeset
|
389 |
} |
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parents:
diff
changeset
|
390 |
|
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prr
parents:
diff
changeset
|
391 |
if (skip == matcher_t::SKIP_NO) |
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parents:
diff
changeset
|
392 |
return false; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
393 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
394 |
return false; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
395 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
396 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
397 |
unsigned int idx; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
398 |
protected: |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
399 |
hb_apply_context_t *c; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
400 |
matcher_t matcher; |
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prr
parents:
diff
changeset
|
401 |
const USHORT *match_glyph_data; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
402 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
403 |
unsigned int num_items; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
404 |
unsigned int end; |
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prr
parents:
diff
changeset
|
405 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
406 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
407 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
408 |
inline const char *get_name (void) { return "APPLY"; } |
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prr
parents:
diff
changeset
|
409 |
typedef return_t (*recurse_func_t) (hb_apply_context_t *c, unsigned int lookup_index); |
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parents:
diff
changeset
|
410 |
template <typename T> |
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parents:
diff
changeset
|
411 |
inline return_t dispatch (const T &obj) { return obj.apply (this); } |
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parents:
diff
changeset
|
412 |
static return_t default_return_value (void) { return false; } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
413 |
bool stop_sublookup_iteration (return_t r) const { return r; } |
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prr
parents:
diff
changeset
|
414 |
return_t recurse (unsigned int lookup_index) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
415 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
416 |
if (unlikely (nesting_level_left == 0 || !recurse_func)) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
417 |
return default_return_value (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
418 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
419 |
nesting_level_left--; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
420 |
bool ret = recurse_func (this, lookup_index); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
421 |
nesting_level_left++; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
422 |
return ret; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
423 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
424 |
|
48274 | 425 |
skipping_iterator_t iter_input, iter_context; |
426 |
||
34414
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parents:
diff
changeset
|
427 |
hb_font_t *font; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
428 |
hb_face_t *face; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
429 |
hb_buffer_t *buffer; |
48274 | 430 |
recurse_func_t recurse_func; |
431 |
const GDEF &gdef; |
|
432 |
const VariationStore &var_store; |
|
433 |
||
34414
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parents:
diff
changeset
|
434 |
hb_direction_t direction; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
435 |
hb_mask_t lookup_mask; |
48274 | 436 |
unsigned int table_index; /* GSUB/GPOS */ |
437 |
unsigned int lookup_index; |
|
34414
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parents:
diff
changeset
|
438 |
unsigned int lookup_props; |
48274 | 439 |
unsigned int nesting_level_left; |
440 |
unsigned int debug_depth; |
|
441 |
||
442 |
bool auto_zwnj; |
|
443 |
bool auto_zwj; |
|
34414
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parents:
diff
changeset
|
444 |
bool has_glyph_classes; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
445 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
446 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
447 |
hb_apply_context_t (unsigned int table_index_, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
448 |
hb_font_t *font_, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
449 |
hb_buffer_t *buffer_) : |
48274 | 450 |
iter_input (), iter_context (), |
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
451 |
font (font_), face (font->face), buffer (buffer_), |
48274 | 452 |
recurse_func (nullptr), |
453 |
gdef (*hb_ot_layout_from_face (face)->gdef), |
|
454 |
var_store (gdef.get_var_store ()), |
|
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
455 |
direction (buffer_->props.direction), |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
456 |
lookup_mask (1), |
48274 | 457 |
table_index (table_index_), |
458 |
lookup_index ((unsigned int) -1), |
|
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
459 |
lookup_props (0), |
48274 | 460 |
nesting_level_left (HB_MAX_NESTING_LEVEL), |
461 |
debug_depth (0), |
|
462 |
auto_zwnj (true), |
|
463 |
auto_zwj (true), |
|
464 |
has_glyph_classes (gdef.has_glyph_classes ()) {} |
|
34414
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prr
parents:
diff
changeset
|
465 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
466 |
inline void set_lookup_mask (hb_mask_t mask) { lookup_mask = mask; } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
467 |
inline void set_auto_zwj (bool auto_zwj_) { auto_zwj = auto_zwj_; } |
48274 | 468 |
inline void set_auto_zwnj (bool auto_zwnj_) { auto_zwnj = auto_zwnj_; } |
34414
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prr
parents:
diff
changeset
|
469 |
inline void set_recurse_func (recurse_func_t func) { recurse_func = func; } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
470 |
inline void set_lookup_index (unsigned int lookup_index_) { lookup_index = lookup_index_; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
471 |
inline void set_lookup_props (unsigned int lookup_props_) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
472 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
473 |
lookup_props = lookup_props_; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
474 |
iter_input.init (this, false); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
475 |
iter_context.init (this, true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
476 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
477 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
478 |
inline bool |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
479 |
match_properties_mark (hb_codepoint_t glyph, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
480 |
unsigned int glyph_props, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
481 |
unsigned int match_props) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
482 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
483 |
/* If using mark filtering sets, the high short of |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
484 |
* match_props has the set index. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
485 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
486 |
if (match_props & LookupFlag::UseMarkFilteringSet) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
487 |
return gdef.mark_set_covers (match_props >> 16, glyph); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
488 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
489 |
/* The second byte of match_props has the meaning |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
490 |
* "ignore marks of attachment type different than |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
491 |
* the attachment type specified." |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
492 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
493 |
if (match_props & LookupFlag::MarkAttachmentType) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
494 |
return (match_props & LookupFlag::MarkAttachmentType) == (glyph_props & LookupFlag::MarkAttachmentType); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
495 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
496 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
497 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
498 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
499 |
inline bool |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
500 |
check_glyph_property (const hb_glyph_info_t *info, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
501 |
unsigned int match_props) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
502 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
503 |
hb_codepoint_t glyph = info->codepoint; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
504 |
unsigned int glyph_props = _hb_glyph_info_get_glyph_props (info); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
505 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
506 |
/* Not covered, if, for example, glyph class is ligature and |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
507 |
* match_props includes LookupFlags::IgnoreLigatures |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
508 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
509 |
if (glyph_props & match_props & LookupFlag::IgnoreFlags) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
510 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
511 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
512 |
if (unlikely (glyph_props & HB_OT_LAYOUT_GLYPH_PROPS_MARK)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
513 |
return match_properties_mark (glyph, glyph_props, match_props); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
514 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
515 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
516 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
517 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
518 |
inline void _set_glyph_props (hb_codepoint_t glyph_index, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
519 |
unsigned int class_guess = 0, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
520 |
bool ligature = false, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
521 |
bool component = false) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
522 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
523 |
unsigned int add_in = _hb_glyph_info_get_glyph_props (&buffer->cur()) & |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
524 |
HB_OT_LAYOUT_GLYPH_PROPS_PRESERVE; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
525 |
add_in |= HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
526 |
if (ligature) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
527 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
528 |
add_in |= HB_OT_LAYOUT_GLYPH_PROPS_LIGATED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
529 |
/* In the only place that the MULTIPLIED bit is used, Uniscribe |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
530 |
* seems to only care about the "last" transformation between |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
531 |
* Ligature and Multiple substitions. Ie. if you ligate, expand, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
532 |
* and ligate again, it forgives the multiplication and acts as |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
533 |
* if only ligation happened. As such, clear MULTIPLIED bit. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
534 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
535 |
add_in &= ~HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
536 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
537 |
if (component) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
538 |
add_in |= HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
539 |
if (likely (has_glyph_classes)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
540 |
_hb_glyph_info_set_glyph_props (&buffer->cur(), add_in | gdef.get_glyph_props (glyph_index)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
541 |
else if (class_guess) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
542 |
_hb_glyph_info_set_glyph_props (&buffer->cur(), add_in | class_guess); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
543 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
544 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
545 |
inline void replace_glyph (hb_codepoint_t glyph_index) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
546 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
547 |
_set_glyph_props (glyph_index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
548 |
buffer->replace_glyph (glyph_index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
549 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
550 |
inline void replace_glyph_inplace (hb_codepoint_t glyph_index) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
551 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
552 |
_set_glyph_props (glyph_index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
553 |
buffer->cur().codepoint = glyph_index; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
554 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
555 |
inline void replace_glyph_with_ligature (hb_codepoint_t glyph_index, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
556 |
unsigned int class_guess) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
557 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
558 |
_set_glyph_props (glyph_index, class_guess, true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
559 |
buffer->replace_glyph (glyph_index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
560 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
561 |
inline void output_glyph_for_component (hb_codepoint_t glyph_index, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
562 |
unsigned int class_guess) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
563 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
564 |
_set_glyph_props (glyph_index, class_guess, false, true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
565 |
buffer->output_glyph (glyph_index); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
566 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
567 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
568 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
569 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
570 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
571 |
typedef bool (*intersects_func_t) (hb_set_t *glyphs, const USHORT &value, const void *data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
572 |
typedef void (*collect_glyphs_func_t) (hb_set_t *glyphs, const USHORT &value, const void *data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
573 |
typedef bool (*match_func_t) (hb_codepoint_t glyph_id, const USHORT &value, const void *data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
574 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
575 |
struct ContextClosureFuncs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
576 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
577 |
intersects_func_t intersects; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
578 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
579 |
struct ContextCollectGlyphsFuncs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
580 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
581 |
collect_glyphs_func_t collect; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
582 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
583 |
struct ContextApplyFuncs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
584 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
585 |
match_func_t match; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
586 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
587 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
588 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
589 |
static inline bool intersects_glyph (hb_set_t *glyphs, const USHORT &value, const void *data HB_UNUSED) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
590 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
591 |
return glyphs->has (value); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
592 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
593 |
static inline bool intersects_class (hb_set_t *glyphs, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
594 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
595 |
const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
596 |
return class_def.intersects_class (glyphs, value); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
597 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
598 |
static inline bool intersects_coverage (hb_set_t *glyphs, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
599 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
600 |
const OffsetTo<Coverage> &coverage = (const OffsetTo<Coverage>&)value; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
601 |
return (data+coverage).intersects (glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
602 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
603 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
604 |
static inline bool intersects_array (hb_closure_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
605 |
unsigned int count, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
606 |
const USHORT values[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
607 |
intersects_func_t intersects_func, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
608 |
const void *intersects_data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
609 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
610 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
611 |
if (likely (!intersects_func (c->glyphs, values[i], intersects_data))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
612 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
613 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
614 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
615 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
616 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
617 |
static inline void collect_glyph (hb_set_t *glyphs, const USHORT &value, const void *data HB_UNUSED) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
618 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
619 |
glyphs->add (value); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
620 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
621 |
static inline void collect_class (hb_set_t *glyphs, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
622 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
623 |
const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
624 |
class_def.add_class (glyphs, value); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
625 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
626 |
static inline void collect_coverage (hb_set_t *glyphs, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
627 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
628 |
const OffsetTo<Coverage> &coverage = (const OffsetTo<Coverage>&)value; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
629 |
(data+coverage).add_coverage (glyphs); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
630 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
631 |
static inline void collect_array (hb_collect_glyphs_context_t *c HB_UNUSED, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
632 |
hb_set_t *glyphs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
633 |
unsigned int count, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
634 |
const USHORT values[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
635 |
collect_glyphs_func_t collect_func, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
636 |
const void *collect_data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
637 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
638 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
639 |
collect_func (glyphs, values[i], collect_data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
640 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
641 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
642 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
643 |
static inline bool match_glyph (hb_codepoint_t glyph_id, const USHORT &value, const void *data HB_UNUSED) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
644 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
645 |
return glyph_id == value; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
646 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
647 |
static inline bool match_class (hb_codepoint_t glyph_id, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
648 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
649 |
const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
650 |
return class_def.get_class (glyph_id) == value; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
651 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
652 |
static inline bool match_coverage (hb_codepoint_t glyph_id, const USHORT &value, const void *data) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
653 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
654 |
const OffsetTo<Coverage> &coverage = (const OffsetTo<Coverage>&)value; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
655 |
return (data+coverage).get_coverage (glyph_id) != NOT_COVERED; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
656 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
657 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
658 |
static inline bool would_match_input (hb_would_apply_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
659 |
unsigned int count, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
660 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
661 |
match_func_t match_func, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
662 |
const void *match_data) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
663 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
664 |
if (count != c->len) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
665 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
666 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
667 |
for (unsigned int i = 1; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
668 |
if (likely (!match_func (c->glyphs[i], input[i - 1], match_data))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
669 |
return false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
670 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
671 |
return true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
672 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
673 |
static inline bool match_input (hb_apply_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
674 |
unsigned int count, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
675 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
676 |
match_func_t match_func, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
677 |
const void *match_data, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
678 |
unsigned int *end_offset, |
40435 | 679 |
unsigned int match_positions[HB_MAX_CONTEXT_LENGTH], |
48274 | 680 |
bool *p_is_mark_ligature = nullptr, |
681 |
unsigned int *p_total_component_count = nullptr) |
|
34414
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parents:
diff
changeset
|
682 |
{ |
48274 | 683 |
TRACE_APPLY (nullptr); |
34414
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prr
parents:
diff
changeset
|
684 |
|
40435 | 685 |
if (unlikely (count > HB_MAX_CONTEXT_LENGTH)) return_trace (false); |
34414
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parents:
diff
changeset
|
686 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
687 |
hb_buffer_t *buffer = c->buffer; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
688 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
689 |
hb_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
690 |
skippy_iter.reset (buffer->idx, count - 1); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
691 |
skippy_iter.set_match_func (match_func, match_data, input); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
692 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
693 |
/* |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
694 |
* This is perhaps the trickiest part of OpenType... Remarks: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
695 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
696 |
* - If all components of the ligature were marks, we call this a mark ligature. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
697 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
698 |
* - If there is no GDEF, and the ligature is NOT a mark ligature, we categorize |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
699 |
* it as a ligature glyph. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
700 |
* |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
701 |
* - Ligatures cannot be formed across glyphs attached to different components |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
702 |
* of previous ligatures. Eg. the sequence is LAM,SHADDA,LAM,FATHA,HEH, and |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
703 |
* LAM,LAM,HEH form a ligature, leaving SHADDA,FATHA next to eachother. |
48274 | 704 |
* However, it would be wrong to ligate that SHADDA,FATHA sequence. |
705 |
* There are a couple of exceptions to this: |
|
706 |
* |
|
707 |
* o If a ligature tries ligating with marks that belong to it itself, go ahead, |
|
708 |
* assuming that the font designer knows what they are doing (otherwise it can |
|
709 |
* break Indic stuff when a matra wants to ligate with a conjunct, |
|
710 |
* |
|
711 |
* o If two marks want to ligate and they belong to different components of the |
|
712 |
* same ligature glyph, and said ligature glyph is to be ignored according to |
|
713 |
* mark-filtering rules, then allow. |
|
714 |
* https://github.com/behdad/harfbuzz/issues/545 |
|
34414
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parents:
diff
changeset
|
715 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
716 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
717 |
bool is_mark_ligature = _hb_glyph_info_is_mark (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
718 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
719 |
unsigned int total_component_count = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
720 |
total_component_count += _hb_glyph_info_get_lig_num_comps (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
721 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
722 |
unsigned int first_lig_id = _hb_glyph_info_get_lig_id (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
723 |
unsigned int first_lig_comp = _hb_glyph_info_get_lig_comp (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
724 |
|
48274 | 725 |
enum { |
726 |
LIGBASE_NOT_CHECKED, |
|
727 |
LIGBASE_MAY_NOT_SKIP, |
|
728 |
LIGBASE_MAY_SKIP |
|
729 |
} ligbase = LIGBASE_NOT_CHECKED; |
|
730 |
||
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
731 |
match_positions[0] = buffer->idx; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
732 |
for (unsigned int i = 1; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
733 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
734 |
if (!skippy_iter.next ()) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
735 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
736 |
match_positions[i] = skippy_iter.idx; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
737 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
738 |
unsigned int this_lig_id = _hb_glyph_info_get_lig_id (&buffer->info[skippy_iter.idx]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
739 |
unsigned int this_lig_comp = _hb_glyph_info_get_lig_comp (&buffer->info[skippy_iter.idx]); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
740 |
|
48274 | 741 |
if (first_lig_id && first_lig_comp) |
742 |
{ |
|
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
743 |
/* If first component was attached to a previous ligature component, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
744 |
* all subsequent components should be attached to the same ligature |
48274 | 745 |
* component, otherwise we shouldn't ligate them... */ |
34414
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prr
parents:
diff
changeset
|
746 |
if (first_lig_id != this_lig_id || first_lig_comp != this_lig_comp) |
48274 | 747 |
{ |
748 |
/* ...unless, we are attached to a base ligature and that base |
|
749 |
* ligature is ignorable. */ |
|
750 |
if (ligbase == LIGBASE_NOT_CHECKED) |
|
751 |
{ |
|
752 |
bool found = false; |
|
753 |
const hb_glyph_info_t *out = buffer->out_info; |
|
754 |
unsigned int j = buffer->out_len; |
|
755 |
while (j && _hb_glyph_info_get_lig_id (&out[j - 1]) == first_lig_id) |
|
756 |
{ |
|
757 |
if (_hb_glyph_info_get_lig_comp (&out[j - 1]) == 0) |
|
758 |
{ |
|
759 |
j--; |
|
760 |
found = true; |
|
761 |
break; |
|
762 |
} |
|
763 |
j--; |
|
764 |
} |
|
765 |
||
766 |
if (found && skippy_iter.may_skip (c, out[j]) == hb_apply_context_t::matcher_t::SKIP_YES) |
|
767 |
ligbase = LIGBASE_MAY_SKIP; |
|
768 |
else |
|
769 |
ligbase = LIGBASE_MAY_NOT_SKIP; |
|
770 |
} |
|
771 |
||
772 |
if (ligbase == LIGBASE_MAY_NOT_SKIP) |
|
773 |
return_trace (false); |
|
774 |
} |
|
775 |
} |
|
776 |
else |
|
777 |
{ |
|
34414
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parents:
diff
changeset
|
778 |
/* If first component was NOT attached to a previous ligature component, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
779 |
* all subsequent components should also NOT be attached to any ligature |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
780 |
* component, unless they are attached to the first component itself! */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
781 |
if (this_lig_id && this_lig_comp && (this_lig_id != first_lig_id)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
782 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
783 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
784 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
785 |
is_mark_ligature = is_mark_ligature && _hb_glyph_info_is_mark (&buffer->info[skippy_iter.idx]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
786 |
total_component_count += _hb_glyph_info_get_lig_num_comps (&buffer->info[skippy_iter.idx]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
787 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
788 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
789 |
*end_offset = skippy_iter.idx - buffer->idx + 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
790 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
791 |
if (p_is_mark_ligature) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
792 |
*p_is_mark_ligature = is_mark_ligature; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
793 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
794 |
if (p_total_component_count) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
795 |
*p_total_component_count = total_component_count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
796 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
797 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
798 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
799 |
static inline bool ligate_input (hb_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
800 |
unsigned int count, /* Including the first glyph */ |
40435 | 801 |
unsigned int match_positions[HB_MAX_CONTEXT_LENGTH], /* Including the first glyph */ |
34414
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parents:
diff
changeset
|
802 |
unsigned int match_length, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
803 |
hb_codepoint_t lig_glyph, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
804 |
bool is_mark_ligature, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
805 |
unsigned int total_component_count) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
806 |
{ |
48274 | 807 |
TRACE_APPLY (nullptr); |
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
808 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
809 |
hb_buffer_t *buffer = c->buffer; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
810 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
811 |
buffer->merge_clusters (buffer->idx, buffer->idx + match_length); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
812 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
813 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
814 |
* - If it *is* a mark ligature, we don't allocate a new ligature id, and leave |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
815 |
* the ligature to keep its old ligature id. This will allow it to attach to |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
816 |
* a base ligature in GPOS. Eg. if the sequence is: LAM,LAM,SHADDA,FATHA,HEH, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
817 |
* and LAM,LAM,HEH for a ligature, they will leave SHADDA and FATHA wit a |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
818 |
* ligature id and component value of 2. Then if SHADDA,FATHA form a ligature |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
819 |
* later, we don't want them to lose their ligature id/component, otherwise |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
820 |
* GPOS will fail to correctly position the mark ligature on top of the |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
821 |
* LAM,LAM,HEH ligature. See: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
822 |
* https://bugzilla.gnome.org/show_bug.cgi?id=676343 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
823 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
824 |
* - If a ligature is formed of components that some of which are also ligatures |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
825 |
* themselves, and those ligature components had marks attached to *their* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
826 |
* components, we have to attach the marks to the new ligature component |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
827 |
* positions! Now *that*'s tricky! And these marks may be following the |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
828 |
* last component of the whole sequence, so we should loop forward looking |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
829 |
* for them and update them. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
830 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
831 |
* Eg. the sequence is LAM,LAM,SHADDA,FATHA,HEH, and the font first forms a |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
832 |
* 'calt' ligature of LAM,HEH, leaving the SHADDA and FATHA with a ligature |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
833 |
* id and component == 1. Now, during 'liga', the LAM and the LAM-HEH ligature |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
834 |
* form a LAM-LAM-HEH ligature. We need to reassign the SHADDA and FATHA to |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
835 |
* the new ligature with a component value of 2. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
836 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
837 |
* This in fact happened to a font... See: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
838 |
* https://bugzilla.gnome.org/show_bug.cgi?id=437633 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
839 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
840 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
841 |
unsigned int klass = is_mark_ligature ? 0 : HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
842 |
unsigned int lig_id = is_mark_ligature ? 0 : _hb_allocate_lig_id (buffer); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
843 |
unsigned int last_lig_id = _hb_glyph_info_get_lig_id (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
844 |
unsigned int last_num_components = _hb_glyph_info_get_lig_num_comps (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
845 |
unsigned int components_so_far = last_num_components; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
846 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
847 |
if (!is_mark_ligature) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
848 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
849 |
_hb_glyph_info_set_lig_props_for_ligature (&buffer->cur(), lig_id, total_component_count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
850 |
if (_hb_glyph_info_get_general_category (&buffer->cur()) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
851 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
852 |
_hb_glyph_info_set_general_category (&buffer->cur(), HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
853 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
854 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
855 |
c->replace_glyph_with_ligature (lig_glyph, klass); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
856 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
857 |
for (unsigned int i = 1; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
858 |
{ |
40435 | 859 |
while (buffer->idx < match_positions[i] && !buffer->in_error) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
860 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
861 |
if (!is_mark_ligature) { |
40435 | 862 |
unsigned int this_comp = _hb_glyph_info_get_lig_comp (&buffer->cur()); |
863 |
if (this_comp == 0) |
|
864 |
this_comp = last_num_components; |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
865 |
unsigned int new_lig_comp = components_so_far - last_num_components + |
40435 | 866 |
MIN (this_comp, last_num_components); |
867 |
_hb_glyph_info_set_lig_props_for_mark (&buffer->cur(), lig_id, new_lig_comp); |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
868 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
869 |
buffer->next_glyph (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
870 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
871 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
872 |
last_lig_id = _hb_glyph_info_get_lig_id (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
873 |
last_num_components = _hb_glyph_info_get_lig_num_comps (&buffer->cur()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
874 |
components_so_far += last_num_components; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
875 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
876 |
/* Skip the base glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
877 |
buffer->idx++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
878 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
879 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
880 |
if (!is_mark_ligature && last_lig_id) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
881 |
/* Re-adjust components for any marks following. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
882 |
for (unsigned int i = buffer->idx; i < buffer->len; i++) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
883 |
if (last_lig_id == _hb_glyph_info_get_lig_id (&buffer->info[i])) { |
40435 | 884 |
unsigned int this_comp = _hb_glyph_info_get_lig_comp (&buffer->info[i]); |
885 |
if (!this_comp) |
|
886 |
break; |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
887 |
unsigned int new_lig_comp = components_so_far - last_num_components + |
40435 | 888 |
MIN (this_comp, last_num_components); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
889 |
_hb_glyph_info_set_lig_props_for_mark (&buffer->info[i], lig_id, new_lig_comp); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
890 |
} else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
891 |
break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
892 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
893 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
894 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
895 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
896 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
897 |
static inline bool match_backtrack (hb_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
898 |
unsigned int count, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
899 |
const USHORT backtrack[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
900 |
match_func_t match_func, |
48274 | 901 |
const void *match_data, |
902 |
unsigned int *match_start) |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
903 |
{ |
48274 | 904 |
TRACE_APPLY (nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
905 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
906 |
hb_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_context; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
907 |
skippy_iter.reset (c->buffer->backtrack_len (), count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
908 |
skippy_iter.set_match_func (match_func, match_data, backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
909 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
910 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
911 |
if (!skippy_iter.prev ()) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
912 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
913 |
|
48274 | 914 |
*match_start = skippy_iter.idx; |
915 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
916 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
917 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
918 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
919 |
static inline bool match_lookahead (hb_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
920 |
unsigned int count, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
921 |
const USHORT lookahead[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
922 |
match_func_t match_func, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
923 |
const void *match_data, |
48274 | 924 |
unsigned int offset, |
925 |
unsigned int *end_index) |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
926 |
{ |
48274 | 927 |
TRACE_APPLY (nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
928 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
929 |
hb_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_context; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
930 |
skippy_iter.reset (c->buffer->idx + offset - 1, count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
931 |
skippy_iter.set_match_func (match_func, match_data, lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
932 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
933 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
934 |
if (!skippy_iter.next ()) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
935 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
936 |
|
48274 | 937 |
*end_index = skippy_iter.idx + 1; |
938 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
939 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
940 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
941 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
942 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
943 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
944 |
struct LookupRecord |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
945 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
946 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
947 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
948 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
949 |
return_trace (c->check_struct (this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
950 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
951 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
952 |
USHORT sequenceIndex; /* Index into current glyph |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
953 |
* sequence--first glyph = 0 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
954 |
USHORT lookupListIndex; /* Lookup to apply to that |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
955 |
* position--zero--based */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
956 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
957 |
DEFINE_SIZE_STATIC (4); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
958 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
959 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
960 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
961 |
template <typename context_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
962 |
static inline void recurse_lookups (context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
963 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
964 |
const LookupRecord lookupRecord[] /* Array of LookupRecords--in design order */) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
965 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
966 |
for (unsigned int i = 0; i < lookupCount; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
967 |
c->recurse (lookupRecord[i].lookupListIndex); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
968 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
969 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
970 |
static inline bool apply_lookup (hb_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
971 |
unsigned int count, /* Including the first glyph */ |
40435 | 972 |
unsigned int match_positions[HB_MAX_CONTEXT_LENGTH], /* Including the first glyph */ |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
973 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
974 |
const LookupRecord lookupRecord[], /* Array of LookupRecords--in design order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
975 |
unsigned int match_length) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
976 |
{ |
48274 | 977 |
TRACE_APPLY (nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
978 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
979 |
hb_buffer_t *buffer = c->buffer; |
48274 | 980 |
int end; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
981 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
982 |
/* All positions are distance from beginning of *output* buffer. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
983 |
* Adjust. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
984 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
985 |
unsigned int bl = buffer->backtrack_len (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
986 |
end = bl + match_length; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
987 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
988 |
int delta = bl - buffer->idx; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
989 |
/* Convert positions to new indexing. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
990 |
for (unsigned int j = 0; j < count; j++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
991 |
match_positions[j] += delta; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
992 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
993 |
|
40435 | 994 |
for (unsigned int i = 0; i < lookupCount && !buffer->in_error; i++) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
995 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
996 |
unsigned int idx = lookupRecord[i].sequenceIndex; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
997 |
if (idx >= count) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
998 |
continue; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
999 |
|
40435 | 1000 |
/* Don't recurse to ourself at same position. |
1001 |
* Note that this test is too naive, it doesn't catch longer loops. */ |
|
1002 |
if (idx == 0 && lookupRecord[i].lookupListIndex == c->lookup_index) |
|
1003 |
continue; |
|
1004 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1005 |
buffer->move_to (match_positions[idx]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1006 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1007 |
unsigned int orig_len = buffer->backtrack_len () + buffer->lookahead_len (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1008 |
if (!c->recurse (lookupRecord[i].lookupListIndex)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1009 |
continue; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1010 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1011 |
unsigned int new_len = buffer->backtrack_len () + buffer->lookahead_len (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1012 |
int delta = new_len - orig_len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1013 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1014 |
if (!delta) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1015 |
continue; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1016 |
|
48274 | 1017 |
/* Recursed lookup changed buffer len. Adjust. |
1018 |
* |
|
1019 |
* TODO: |
|
1020 |
* |
|
1021 |
* Right now, if buffer length increased by n, we assume n new glyphs |
|
1022 |
* were added right after the current position, and if buffer length |
|
1023 |
* was decreased by n, we assume n match positions after the current |
|
1024 |
* one where removed. The former (buffer length increased) case is |
|
1025 |
* fine, but the decrease case can be improved in at least two ways, |
|
1026 |
* both of which are significant: |
|
1027 |
* |
|
1028 |
* - If recursed-to lookup is MultipleSubst and buffer length |
|
1029 |
* decreased, then it's current match position that was deleted, |
|
1030 |
* NOT the one after it. |
|
1031 |
* |
|
1032 |
* - If buffer length was decreased by n, it does not necessarily |
|
1033 |
* mean that n match positions where removed, as there might |
|
1034 |
* have been marks and default-ignorables in the sequence. We |
|
1035 |
* should instead drop match positions between current-position |
|
1036 |
* and current-position + n instead. |
|
1037 |
* |
|
1038 |
* It should be possible to construct tests for both of these cases. |
|
1039 |
*/ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1040 |
|
48274 | 1041 |
end += delta; |
1042 |
if (end <= int (match_positions[idx])) |
|
40435 | 1043 |
{ |
43232 | 1044 |
/* End might end up being smaller than match_positions[idx] if the recursed |
1045 |
* lookup ended up removing many items, more than we have had matched. |
|
1046 |
* Just never rewind end back and get out of here. |
|
1047 |
* https://bugs.chromium.org/p/chromium/issues/detail?id=659496 */ |
|
1048 |
end = match_positions[idx]; |
|
40435 | 1049 |
/* There can't be any further changes. */ |
1050 |
break; |
|
1051 |
} |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1052 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1053 |
unsigned int next = idx + 1; /* next now is the position after the recursed lookup. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1054 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1055 |
if (delta > 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1056 |
{ |
40435 | 1057 |
if (unlikely (delta + count > HB_MAX_CONTEXT_LENGTH)) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1058 |
break; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1059 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1060 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1061 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1062 |
/* NOTE: delta is negative. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1063 |
delta = MAX (delta, (int) next - (int) count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1064 |
next -= delta; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1065 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1066 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1067 |
/* Shift! */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1068 |
memmove (match_positions + next + delta, match_positions + next, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1069 |
(count - next) * sizeof (match_positions[0])); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1070 |
next += delta; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1071 |
count += delta; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1072 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1073 |
/* Fill in new entries. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1074 |
for (unsigned int j = idx + 1; j < next; j++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1075 |
match_positions[j] = match_positions[j - 1] + 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1076 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1077 |
/* And fixup the rest. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1078 |
for (; next < count; next++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1079 |
match_positions[next] += delta; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1080 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1081 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1082 |
buffer->move_to (end); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1083 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1084 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1085 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1086 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1087 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1088 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1089 |
/* Contextual lookups */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1090 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1091 |
struct ContextClosureLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1092 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1093 |
ContextClosureFuncs funcs; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1094 |
const void *intersects_data; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1095 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1096 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1097 |
struct ContextCollectGlyphsLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1098 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1099 |
ContextCollectGlyphsFuncs funcs; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1100 |
const void *collect_data; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1101 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1102 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1103 |
struct ContextApplyLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1104 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1105 |
ContextApplyFuncs funcs; |
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diff
changeset
|
1106 |
const void *match_data; |
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prr
parents:
diff
changeset
|
1107 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1108 |
|
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parents:
diff
changeset
|
1109 |
static inline void context_closure_lookup (hb_closure_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1110 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1111 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1112 |
unsigned int lookupCount, |
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prr
parents:
diff
changeset
|
1113 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1114 |
ContextClosureLookupContext &lookup_context) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1115 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1116 |
if (intersects_array (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1117 |
inputCount ? inputCount - 1 : 0, input, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1118 |
lookup_context.funcs.intersects, lookup_context.intersects_data)) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1119 |
recurse_lookups (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1120 |
lookupCount, lookupRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1121 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1122 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1123 |
static inline void context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1124 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1125 |
const USHORT input[], /* Array of input values--start with second glyph */ |
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prr
parents:
diff
changeset
|
1126 |
unsigned int lookupCount, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1127 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1128 |
ContextCollectGlyphsLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1129 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1130 |
collect_array (c, c->input, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1131 |
inputCount ? inputCount - 1 : 0, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1132 |
lookup_context.funcs.collect, lookup_context.collect_data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1133 |
recurse_lookups (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1134 |
lookupCount, lookupRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1135 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1136 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1137 |
static inline bool context_would_apply_lookup (hb_would_apply_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1138 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1139 |
const USHORT input[], /* Array of input values--start with second glyph */ |
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prr
parents:
diff
changeset
|
1140 |
unsigned int lookupCount HB_UNUSED, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1141 |
const LookupRecord lookupRecord[] HB_UNUSED, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1142 |
ContextApplyLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1143 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1144 |
return would_match_input (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1145 |
inputCount, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1146 |
lookup_context.funcs.match, lookup_context.match_data); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1147 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1148 |
static inline bool context_apply_lookup (hb_apply_context_t *c, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1149 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1150 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1151 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1152 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1153 |
ContextApplyLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1154 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1155 |
unsigned int match_length = 0; |
40435 | 1156 |
unsigned int match_positions[HB_MAX_CONTEXT_LENGTH]; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1157 |
return match_input (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1158 |
inputCount, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1159 |
lookup_context.funcs.match, lookup_context.match_data, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1160 |
&match_length, match_positions) |
48274 | 1161 |
&& (c->buffer->unsafe_to_break (c->buffer->idx, c->buffer->idx + match_length), |
1162 |
apply_lookup (c, |
|
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1163 |
inputCount, match_positions, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1164 |
lookupCount, lookupRecord, |
48274 | 1165 |
match_length)); |
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1166 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1167 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1168 |
struct Rule |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1169 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1170 |
inline void closure (hb_closure_context_t *c, ContextClosureLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1171 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1172 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1173 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (inputZ, inputZ[0].static_size * (inputCount ? inputCount - 1 : 0)); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
1174 |
context_closure_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1175 |
inputCount, inputZ, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1176 |
lookupCount, lookupRecord, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1177 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1178 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1179 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1180 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ContextCollectGlyphsLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1181 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1182 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1183 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (inputZ, inputZ[0].static_size * (inputCount ? inputCount - 1 : 0)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1184 |
context_collect_glyphs_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1185 |
inputCount, inputZ, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1186 |
lookupCount, lookupRecord, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1187 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1188 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1189 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1190 |
inline bool would_apply (hb_would_apply_context_t *c, ContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1191 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1192 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1193 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (inputZ, inputZ[0].static_size * (inputCount ? inputCount - 1 : 0)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1194 |
return_trace (context_would_apply_lookup (c, inputCount, inputZ, lookupCount, lookupRecord, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1195 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1196 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1197 |
inline bool apply (hb_apply_context_t *c, ContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1198 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1199 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1200 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (inputZ, inputZ[0].static_size * (inputCount ? inputCount - 1 : 0)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1201 |
return_trace (context_apply_lookup (c, inputCount, inputZ, lookupCount, lookupRecord, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1202 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1203 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1204 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1205 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1206 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1207 |
TRACE_SANITIZE (this); |
48274 | 1208 |
return_trace (inputCount.sanitize (c) && |
1209 |
lookupCount.sanitize (c) && |
|
1210 |
c->check_range (inputZ, |
|
1211 |
inputZ[0].static_size * inputCount + |
|
1212 |
lookupRecordX[0].static_size * lookupCount)); |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1213 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1214 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1215 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1216 |
USHORT inputCount; /* Total number of glyphs in input |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1217 |
* glyph sequence--includes the first |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1218 |
* glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1219 |
USHORT lookupCount; /* Number of LookupRecords */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1220 |
USHORT inputZ[VAR]; /* Array of match inputs--start with |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1221 |
* second glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1222 |
LookupRecord lookupRecordX[VAR]; /* Array of LookupRecords--in |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1223 |
* design order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1224 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1225 |
DEFINE_SIZE_ARRAY2 (4, inputZ, lookupRecordX); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1226 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1227 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1228 |
struct RuleSet |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1229 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1230 |
inline void closure (hb_closure_context_t *c, ContextClosureLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1231 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1232 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1233 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1234 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1235 |
(this+rule[i]).closure (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1236 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1237 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1238 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ContextCollectGlyphsLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1239 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1240 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1241 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1242 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1243 |
(this+rule[i]).collect_glyphs (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1244 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1245 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1246 |
inline bool would_apply (hb_would_apply_context_t *c, ContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1247 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1248 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1249 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1250 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1251 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1252 |
if ((this+rule[i]).would_apply (c, lookup_context)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1253 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1254 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1255 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1256 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1257 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1258 |
inline bool apply (hb_apply_context_t *c, ContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1259 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1260 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1261 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1262 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1263 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1264 |
if ((this+rule[i]).apply (c, lookup_context)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1265 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1266 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1267 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1268 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1269 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1270 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1271 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1272 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1273 |
return_trace (rule.sanitize (c, this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1274 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1275 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1276 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1277 |
OffsetArrayOf<Rule> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1278 |
rule; /* Array of Rule tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1279 |
* ordered by preference */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1280 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1281 |
DEFINE_SIZE_ARRAY (2, rule); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1282 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1283 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1284 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1285 |
struct ContextFormat1 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1286 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1287 |
inline void closure (hb_closure_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1288 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1289 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1290 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1291 |
const Coverage &cov = (this+coverage); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1292 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1293 |
struct ContextClosureLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1294 |
{intersects_glyph}, |
48274 | 1295 |
nullptr |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1296 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1297 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1298 |
unsigned int count = ruleSet.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1299 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1300 |
if (cov.intersects_coverage (c->glyphs, i)) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1301 |
const RuleSet &rule_set = this+ruleSet[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1302 |
rule_set.closure (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1303 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1304 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1305 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1306 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1307 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1308 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1309 |
(this+coverage).add_coverage (c->input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1310 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1311 |
struct ContextCollectGlyphsLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1312 |
{collect_glyph}, |
48274 | 1313 |
nullptr |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1314 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1315 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1316 |
unsigned int count = ruleSet.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1317 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1318 |
(this+ruleSet[i]).collect_glyphs (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1319 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1320 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1321 |
inline bool would_apply (hb_would_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1322 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1323 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1324 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1325 |
const RuleSet &rule_set = this+ruleSet[(this+coverage).get_coverage (c->glyphs[0])]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1326 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1327 |
{match_glyph}, |
48274 | 1328 |
nullptr |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1329 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1330 |
return_trace (rule_set.would_apply (c, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1331 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1332 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1333 |
inline const Coverage &get_coverage (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1334 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1335 |
return this+coverage; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1336 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1337 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1338 |
inline bool apply (hb_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1339 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1340 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1341 |
unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1342 |
if (likely (index == NOT_COVERED)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1343 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1344 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1345 |
const RuleSet &rule_set = this+ruleSet[index]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1346 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1347 |
{match_glyph}, |
48274 | 1348 |
nullptr |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1349 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1350 |
return_trace (rule_set.apply (c, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1351 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1352 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1353 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1354 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1355 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1356 |
return_trace (coverage.sanitize (c, this) && ruleSet.sanitize (c, this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1357 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1358 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1359 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1360 |
USHORT format; /* Format identifier--format = 1 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1361 |
OffsetTo<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1362 |
coverage; /* Offset to Coverage table--from |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1363 |
* beginning of table */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1364 |
OffsetArrayOf<RuleSet> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1365 |
ruleSet; /* Array of RuleSet tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1366 |
* ordered by Coverage Index */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1367 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1368 |
DEFINE_SIZE_ARRAY (6, ruleSet); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1369 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1370 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1371 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1372 |
struct ContextFormat2 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1373 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1374 |
inline void closure (hb_closure_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1375 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1376 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1377 |
if (!(this+coverage).intersects (c->glyphs)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1378 |
return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1379 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1380 |
const ClassDef &class_def = this+classDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1381 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1382 |
struct ContextClosureLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1383 |
{intersects_class}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1384 |
&class_def |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1385 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1386 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1387 |
unsigned int count = ruleSet.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1388 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1389 |
if (class_def.intersects_class (c->glyphs, i)) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1390 |
const RuleSet &rule_set = this+ruleSet[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1391 |
rule_set.closure (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1392 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1393 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1394 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1395 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1396 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1397 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1398 |
(this+coverage).add_coverage (c->input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1399 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1400 |
const ClassDef &class_def = this+classDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1401 |
struct ContextCollectGlyphsLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1402 |
{collect_class}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1403 |
&class_def |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1404 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1405 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1406 |
unsigned int count = ruleSet.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1407 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1408 |
(this+ruleSet[i]).collect_glyphs (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1409 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1410 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1411 |
inline bool would_apply (hb_would_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1412 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1413 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1414 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1415 |
const ClassDef &class_def = this+classDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1416 |
unsigned int index = class_def.get_class (c->glyphs[0]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1417 |
const RuleSet &rule_set = this+ruleSet[index]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1418 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1419 |
{match_class}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1420 |
&class_def |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1421 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1422 |
return_trace (rule_set.would_apply (c, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1423 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1424 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1425 |
inline const Coverage &get_coverage (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1426 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1427 |
return this+coverage; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1428 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1429 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1430 |
inline bool apply (hb_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1431 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1432 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1433 |
unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1434 |
if (likely (index == NOT_COVERED)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1435 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1436 |
const ClassDef &class_def = this+classDef; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1437 |
index = class_def.get_class (c->buffer->cur().codepoint); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1438 |
const RuleSet &rule_set = this+ruleSet[index]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1439 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1440 |
{match_class}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1441 |
&class_def |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1442 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1443 |
return_trace (rule_set.apply (c, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1444 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1445 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1446 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1447 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1448 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1449 |
return_trace (coverage.sanitize (c, this) && classDef.sanitize (c, this) && ruleSet.sanitize (c, this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1450 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1451 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1452 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1453 |
USHORT format; /* Format identifier--format = 2 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1454 |
OffsetTo<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1455 |
coverage; /* Offset to Coverage table--from |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1456 |
* beginning of table */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1457 |
OffsetTo<ClassDef> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1458 |
classDef; /* Offset to glyph ClassDef table--from |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1459 |
* beginning of table */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1460 |
OffsetArrayOf<RuleSet> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1461 |
ruleSet; /* Array of RuleSet tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1462 |
* ordered by class */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1463 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1464 |
DEFINE_SIZE_ARRAY (8, ruleSet); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1465 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1466 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1467 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1468 |
struct ContextFormat3 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1469 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1470 |
inline void closure (hb_closure_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1471 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1472 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1473 |
if (!(this+coverageZ[0]).intersects (c->glyphs)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1474 |
return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1475 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1476 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverageZ, coverageZ[0].static_size * glyphCount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1477 |
struct ContextClosureLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1478 |
{intersects_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1479 |
this |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1480 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1481 |
context_closure_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1482 |
glyphCount, (const USHORT *) (coverageZ + 1), |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1483 |
lookupCount, lookupRecord, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1484 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1485 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1486 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1487 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1488 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1489 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1490 |
(this+coverageZ[0]).add_coverage (c->input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1491 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1492 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverageZ, coverageZ[0].static_size * glyphCount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1493 |
struct ContextCollectGlyphsLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1494 |
{collect_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1495 |
this |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1496 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1497 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1498 |
context_collect_glyphs_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1499 |
glyphCount, (const USHORT *) (coverageZ + 1), |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1500 |
lookupCount, lookupRecord, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1501 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1502 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1503 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1504 |
inline bool would_apply (hb_would_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1505 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1506 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1507 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1508 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverageZ, coverageZ[0].static_size * glyphCount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1509 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1510 |
{match_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1511 |
this |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1512 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1513 |
return_trace (context_would_apply_lookup (c, glyphCount, (const USHORT *) (coverageZ + 1), lookupCount, lookupRecord, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1514 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1515 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1516 |
inline const Coverage &get_coverage (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1517 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1518 |
return this+coverageZ[0]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1519 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1520 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1521 |
inline bool apply (hb_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1522 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1523 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1524 |
unsigned int index = (this+coverageZ[0]).get_coverage (c->buffer->cur().codepoint); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1525 |
if (likely (index == NOT_COVERED)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1526 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1527 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverageZ, coverageZ[0].static_size * glyphCount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1528 |
struct ContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1529 |
{match_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1530 |
this |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1531 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1532 |
return_trace (context_apply_lookup (c, glyphCount, (const USHORT *) (coverageZ + 1), lookupCount, lookupRecord, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1533 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1534 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1535 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1536 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1537 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1538 |
if (!c->check_struct (this)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1539 |
unsigned int count = glyphCount; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1540 |
if (!count) return_trace (false); /* We want to access coverageZ[0] freely. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1541 |
if (!c->check_array (coverageZ, coverageZ[0].static_size, count)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1542 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1543 |
if (!coverageZ[i].sanitize (c, this)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1544 |
const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverageZ, coverageZ[0].static_size * count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1545 |
return_trace (c->check_array (lookupRecord, lookupRecord[0].static_size, lookupCount)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1546 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1547 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1548 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1549 |
USHORT format; /* Format identifier--format = 3 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1550 |
USHORT glyphCount; /* Number of glyphs in the input glyph |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1551 |
* sequence */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1552 |
USHORT lookupCount; /* Number of LookupRecords */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1553 |
OffsetTo<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1554 |
coverageZ[VAR]; /* Array of offsets to Coverage |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1555 |
* table in glyph sequence order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1556 |
LookupRecord lookupRecordX[VAR]; /* Array of LookupRecords--in |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1557 |
* design order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1558 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1559 |
DEFINE_SIZE_ARRAY2 (6, coverageZ, lookupRecordX); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1560 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1561 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1562 |
struct Context |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1563 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1564 |
template <typename context_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1565 |
inline typename context_t::return_t dispatch (context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1566 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1567 |
TRACE_DISPATCH (this, u.format); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1568 |
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1569 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1570 |
case 1: return_trace (c->dispatch (u.format1)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1571 |
case 2: return_trace (c->dispatch (u.format2)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1572 |
case 3: return_trace (c->dispatch (u.format3)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1573 |
default:return_trace (c->default_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1574 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1575 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1576 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1577 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1578 |
union { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1579 |
USHORT format; /* Format identifier */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1580 |
ContextFormat1 format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1581 |
ContextFormat2 format2; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1582 |
ContextFormat3 format3; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1583 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1584 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1585 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1586 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1587 |
/* Chaining Contextual lookups */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1588 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1589 |
struct ChainContextClosureLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1590 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1591 |
ContextClosureFuncs funcs; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1592 |
const void *intersects_data[3]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1593 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1594 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1595 |
struct ChainContextCollectGlyphsLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1596 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1597 |
ContextCollectGlyphsFuncs funcs; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1598 |
const void *collect_data[3]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1599 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1600 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1601 |
struct ChainContextApplyLookupContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1602 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1603 |
ContextApplyFuncs funcs; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1604 |
const void *match_data[3]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1605 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1606 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1607 |
static inline void chain_context_closure_lookup (hb_closure_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1608 |
unsigned int backtrackCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1609 |
const USHORT backtrack[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1610 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1611 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1612 |
unsigned int lookaheadCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1613 |
const USHORT lookahead[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1614 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1615 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1616 |
ChainContextClosureLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1617 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1618 |
if (intersects_array (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1619 |
backtrackCount, backtrack, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1620 |
lookup_context.funcs.intersects, lookup_context.intersects_data[0]) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1621 |
&& intersects_array (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1622 |
inputCount ? inputCount - 1 : 0, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1623 |
lookup_context.funcs.intersects, lookup_context.intersects_data[1]) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1624 |
&& intersects_array (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1625 |
lookaheadCount, lookahead, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1626 |
lookup_context.funcs.intersects, lookup_context.intersects_data[2])) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1627 |
recurse_lookups (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1628 |
lookupCount, lookupRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1629 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1630 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1631 |
static inline void chain_context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1632 |
unsigned int backtrackCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1633 |
const USHORT backtrack[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1634 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1635 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1636 |
unsigned int lookaheadCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1637 |
const USHORT lookahead[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1638 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1639 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1640 |
ChainContextCollectGlyphsLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1641 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1642 |
collect_array (c, c->before, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1643 |
backtrackCount, backtrack, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1644 |
lookup_context.funcs.collect, lookup_context.collect_data[0]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1645 |
collect_array (c, c->input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1646 |
inputCount ? inputCount - 1 : 0, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1647 |
lookup_context.funcs.collect, lookup_context.collect_data[1]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1648 |
collect_array (c, c->after, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1649 |
lookaheadCount, lookahead, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1650 |
lookup_context.funcs.collect, lookup_context.collect_data[2]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1651 |
recurse_lookups (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1652 |
lookupCount, lookupRecord); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1653 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1654 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1655 |
static inline bool chain_context_would_apply_lookup (hb_would_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1656 |
unsigned int backtrackCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1657 |
const USHORT backtrack[] HB_UNUSED, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1658 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1659 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1660 |
unsigned int lookaheadCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1661 |
const USHORT lookahead[] HB_UNUSED, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1662 |
unsigned int lookupCount HB_UNUSED, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1663 |
const LookupRecord lookupRecord[] HB_UNUSED, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1664 |
ChainContextApplyLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1665 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1666 |
return (c->zero_context ? !backtrackCount && !lookaheadCount : true) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1667 |
&& would_match_input (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1668 |
inputCount, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1669 |
lookup_context.funcs.match, lookup_context.match_data[1]); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1670 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1671 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1672 |
static inline bool chain_context_apply_lookup (hb_apply_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1673 |
unsigned int backtrackCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1674 |
const USHORT backtrack[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1675 |
unsigned int inputCount, /* Including the first glyph (not matched) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1676 |
const USHORT input[], /* Array of input values--start with second glyph */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1677 |
unsigned int lookaheadCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1678 |
const USHORT lookahead[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1679 |
unsigned int lookupCount, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1680 |
const LookupRecord lookupRecord[], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1681 |
ChainContextApplyLookupContext &lookup_context) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1682 |
{ |
48274 | 1683 |
unsigned int start_index = 0, match_length = 0, end_index = 0; |
40435 | 1684 |
unsigned int match_positions[HB_MAX_CONTEXT_LENGTH]; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1685 |
return match_input (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1686 |
inputCount, input, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1687 |
lookup_context.funcs.match, lookup_context.match_data[1], |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1688 |
&match_length, match_positions) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1689 |
&& match_backtrack (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1690 |
backtrackCount, backtrack, |
48274 | 1691 |
lookup_context.funcs.match, lookup_context.match_data[0], |
1692 |
&start_index) |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1693 |
&& match_lookahead (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1694 |
lookaheadCount, lookahead, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1695 |
lookup_context.funcs.match, lookup_context.match_data[2], |
48274 | 1696 |
match_length, &end_index) |
1697 |
&& (c->buffer->unsafe_to_break_from_outbuffer (start_index, end_index), |
|
1698 |
apply_lookup (c, |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1699 |
inputCount, match_positions, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1700 |
lookupCount, lookupRecord, |
48274 | 1701 |
match_length)); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1702 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1703 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1704 |
struct ChainRule |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1705 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1706 |
inline void closure (hb_closure_context_t *c, ChainContextClosureLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1707 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1708 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1709 |
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1710 |
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1711 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1712 |
chain_context_closure_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1713 |
backtrack.len, backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1714 |
input.len, input.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1715 |
lookahead.len, lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1716 |
lookup.len, lookup.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1717 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1718 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1719 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1720 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ChainContextCollectGlyphsLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1721 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1722 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1723 |
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1724 |
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1725 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1726 |
chain_context_collect_glyphs_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1727 |
backtrack.len, backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1728 |
input.len, input.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1729 |
lookahead.len, lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1730 |
lookup.len, lookup.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1731 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1732 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1733 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1734 |
inline bool would_apply (hb_would_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1735 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1736 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1737 |
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1738 |
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1739 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1740 |
return_trace (chain_context_would_apply_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1741 |
backtrack.len, backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1742 |
input.len, input.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1743 |
lookahead.len, lookahead.array, lookup.len, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1744 |
lookup.array, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1745 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1746 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1747 |
inline bool apply (hb_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1748 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1749 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1750 |
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1751 |
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1752 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1753 |
return_trace (chain_context_apply_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1754 |
backtrack.len, backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1755 |
input.len, input.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1756 |
lookahead.len, lookahead.array, lookup.len, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1757 |
lookup.array, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1758 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1759 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1760 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1761 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1762 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1763 |
if (!backtrack.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1764 |
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1765 |
if (!input.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1766 |
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1767 |
if (!lookahead.sanitize (c)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1768 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1769 |
return_trace (lookup.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1770 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1771 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1772 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1773 |
ArrayOf<USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1774 |
backtrack; /* Array of backtracking values |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1775 |
* (to be matched before the input |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1776 |
* sequence) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1777 |
HeadlessArrayOf<USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1778 |
inputX; /* Array of input values (start with |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1779 |
* second glyph) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1780 |
ArrayOf<USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1781 |
lookaheadX; /* Array of lookahead values's (to be |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1782 |
* matched after the input sequence) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1783 |
ArrayOf<LookupRecord> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1784 |
lookupX; /* Array of LookupRecords--in |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1785 |
* design order) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1786 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1787 |
DEFINE_SIZE_MIN (8); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1788 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1789 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1790 |
struct ChainRuleSet |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1791 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1792 |
inline void closure (hb_closure_context_t *c, ChainContextClosureLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1793 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1794 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1795 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1796 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1797 |
(this+rule[i]).closure (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1798 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1799 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1800 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c, ChainContextCollectGlyphsLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1801 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1802 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1803 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1804 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1805 |
(this+rule[i]).collect_glyphs (c, lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1806 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1807 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1808 |
inline bool would_apply (hb_would_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1809 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1810 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1811 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1812 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1813 |
if ((this+rule[i]).would_apply (c, lookup_context)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1814 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1815 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1816 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1817 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1818 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1819 |
inline bool apply (hb_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1820 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1821 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1822 |
unsigned int num_rules = rule.len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1823 |
for (unsigned int i = 0; i < num_rules; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1824 |
if ((this+rule[i]).apply (c, lookup_context)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1825 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1826 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1827 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1828 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1829 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1830 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1831 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1832 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1833 |
return_trace (rule.sanitize (c, this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1834 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1835 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1836 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1837 |
OffsetArrayOf<ChainRule> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1838 |
rule; /* Array of ChainRule tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1839 |
* ordered by preference */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1840 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1841 |
DEFINE_SIZE_ARRAY (2, rule); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1842 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1843 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1844 |
struct ChainContextFormat1 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1845 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1846 |
inline void closure (hb_closure_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1847 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1848 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1849 |
const Coverage &cov = (this+coverage); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1850 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1851 |
struct ChainContextClosureLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1852 |
{intersects_glyph}, |
48274 | 1853 |
{nullptr, nullptr, nullptr} |
34414
e496a8d8fc8a
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|
1854 |
}; |
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|
1855 |
|
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|
1856 |
unsigned int count = ruleSet.len; |
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|
1857 |
for (unsigned int i = 0; i < count; i++) |
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|
1858 |
if (cov.intersects_coverage (c->glyphs, i)) { |
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|
1859 |
const ChainRuleSet &rule_set = this+ruleSet[i]; |
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|
1860 |
rule_set.closure (c, lookup_context); |
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|
1861 |
} |
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diff
changeset
|
1862 |
} |
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diff
changeset
|
1863 |
|
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|
1864 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
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|
1865 |
{ |
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changeset
|
1866 |
TRACE_COLLECT_GLYPHS (this); |
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|
1867 |
(this+coverage).add_coverage (c->input); |
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|
1868 |
|
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|
1869 |
struct ChainContextCollectGlyphsLookupContext lookup_context = { |
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|
1870 |
{collect_glyph}, |
48274 | 1871 |
{nullptr, nullptr, nullptr} |
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|
1872 |
}; |
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changeset
|
1873 |
|
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|
1874 |
unsigned int count = ruleSet.len; |
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|
1875 |
for (unsigned int i = 0; i < count; i++) |
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|
1876 |
(this+ruleSet[i]).collect_glyphs (c, lookup_context); |
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parents:
diff
changeset
|
1877 |
} |
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diff
changeset
|
1878 |
|
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|
1879 |
inline bool would_apply (hb_would_apply_context_t *c) const |
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diff
changeset
|
1880 |
{ |
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changeset
|
1881 |
TRACE_WOULD_APPLY (this); |
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changeset
|
1882 |
|
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|
1883 |
const ChainRuleSet &rule_set = this+ruleSet[(this+coverage).get_coverage (c->glyphs[0])]; |
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|
1884 |
struct ChainContextApplyLookupContext lookup_context = { |
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|
1885 |
{match_glyph}, |
48274 | 1886 |
{nullptr, nullptr, nullptr} |
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|
1887 |
}; |
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|
1888 |
return_trace (rule_set.would_apply (c, lookup_context)); |
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diff
changeset
|
1889 |
} |
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parents:
diff
changeset
|
1890 |
|
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|
1891 |
inline const Coverage &get_coverage (void) const |
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changeset
|
1892 |
{ |
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parents:
diff
changeset
|
1893 |
return this+coverage; |
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parents:
diff
changeset
|
1894 |
} |
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diff
changeset
|
1895 |
|
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diff
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|
1896 |
inline bool apply (hb_apply_context_t *c) const |
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parents:
diff
changeset
|
1897 |
{ |
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parents:
diff
changeset
|
1898 |
TRACE_APPLY (this); |
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parents:
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|
1899 |
unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); |
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|
1900 |
if (likely (index == NOT_COVERED)) return_trace (false); |
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diff
changeset
|
1901 |
|
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changeset
|
1902 |
const ChainRuleSet &rule_set = this+ruleSet[index]; |
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|
1903 |
struct ChainContextApplyLookupContext lookup_context = { |
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parents:
diff
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|
1904 |
{match_glyph}, |
48274 | 1905 |
{nullptr, nullptr, nullptr} |
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|
1906 |
}; |
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changeset
|
1907 |
return_trace (rule_set.apply (c, lookup_context)); |
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parents:
diff
changeset
|
1908 |
} |
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diff
changeset
|
1909 |
|
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|
1910 |
inline bool sanitize (hb_sanitize_context_t *c) const |
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parents:
diff
changeset
|
1911 |
{ |
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parents:
diff
changeset
|
1912 |
TRACE_SANITIZE (this); |
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parents:
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|
1913 |
return_trace (coverage.sanitize (c, this) && ruleSet.sanitize (c, this)); |
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|
1914 |
} |
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parents:
diff
changeset
|
1915 |
|
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diff
changeset
|
1916 |
protected: |
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parents:
diff
changeset
|
1917 |
USHORT format; /* Format identifier--format = 1 */ |
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|
1918 |
OffsetTo<Coverage> |
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diff
changeset
|
1919 |
coverage; /* Offset to Coverage table--from |
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|
1920 |
* beginning of table */ |
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|
1921 |
OffsetArrayOf<ChainRuleSet> |
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|
1922 |
ruleSet; /* Array of ChainRuleSet tables |
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|
1923 |
* ordered by Coverage Index */ |
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changeset
|
1924 |
public: |
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prr
parents:
diff
changeset
|
1925 |
DEFINE_SIZE_ARRAY (6, ruleSet); |
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parents:
diff
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|
1926 |
}; |
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parents:
diff
changeset
|
1927 |
|
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parents:
diff
changeset
|
1928 |
struct ChainContextFormat2 |
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parents:
diff
changeset
|
1929 |
{ |
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parents:
diff
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|
1930 |
inline void closure (hb_closure_context_t *c) const |
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parents:
diff
changeset
|
1931 |
{ |
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parents:
diff
changeset
|
1932 |
TRACE_CLOSURE (this); |
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parents:
diff
changeset
|
1933 |
if (!(this+coverage).intersects (c->glyphs)) |
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parents:
diff
changeset
|
1934 |
return; |
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parents:
diff
changeset
|
1935 |
|
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parents:
diff
changeset
|
1936 |
const ClassDef &backtrack_class_def = this+backtrackClassDef; |
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parents:
diff
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|
1937 |
const ClassDef &input_class_def = this+inputClassDef; |
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parents:
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|
1938 |
const ClassDef &lookahead_class_def = this+lookaheadClassDef; |
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parents:
diff
changeset
|
1939 |
|
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parents:
diff
changeset
|
1940 |
struct ChainContextClosureLookupContext lookup_context = { |
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prr
parents:
diff
changeset
|
1941 |
{intersects_class}, |
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parents:
diff
changeset
|
1942 |
{&backtrack_class_def, |
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parents:
diff
changeset
|
1943 |
&input_class_def, |
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parents:
diff
changeset
|
1944 |
&lookahead_class_def} |
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parents:
diff
changeset
|
1945 |
}; |
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parents:
diff
changeset
|
1946 |
|
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parents:
diff
changeset
|
1947 |
unsigned int count = ruleSet.len; |
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parents:
diff
changeset
|
1948 |
for (unsigned int i = 0; i < count; i++) |
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parents:
diff
changeset
|
1949 |
if (input_class_def.intersects_class (c->glyphs, i)) { |
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parents:
diff
changeset
|
1950 |
const ChainRuleSet &rule_set = this+ruleSet[i]; |
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parents:
diff
changeset
|
1951 |
rule_set.closure (c, lookup_context); |
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parents:
diff
changeset
|
1952 |
} |
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prr
parents:
diff
changeset
|
1953 |
} |
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parents:
diff
changeset
|
1954 |
|
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parents:
diff
changeset
|
1955 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
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parents:
diff
changeset
|
1956 |
{ |
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parents:
diff
changeset
|
1957 |
TRACE_COLLECT_GLYPHS (this); |
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parents:
diff
changeset
|
1958 |
(this+coverage).add_coverage (c->input); |
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parents:
diff
changeset
|
1959 |
|
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parents:
diff
changeset
|
1960 |
const ClassDef &backtrack_class_def = this+backtrackClassDef; |
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parents:
diff
changeset
|
1961 |
const ClassDef &input_class_def = this+inputClassDef; |
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parents:
diff
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|
1962 |
const ClassDef &lookahead_class_def = this+lookaheadClassDef; |
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parents:
diff
changeset
|
1963 |
|
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parents:
diff
changeset
|
1964 |
struct ChainContextCollectGlyphsLookupContext lookup_context = { |
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parents:
diff
changeset
|
1965 |
{collect_class}, |
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prr
parents:
diff
changeset
|
1966 |
{&backtrack_class_def, |
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parents:
diff
changeset
|
1967 |
&input_class_def, |
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parents:
diff
changeset
|
1968 |
&lookahead_class_def} |
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parents:
diff
changeset
|
1969 |
}; |
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parents:
diff
changeset
|
1970 |
|
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parents:
diff
changeset
|
1971 |
unsigned int count = ruleSet.len; |
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parents:
diff
changeset
|
1972 |
for (unsigned int i = 0; i < count; i++) |
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parents:
diff
changeset
|
1973 |
(this+ruleSet[i]).collect_glyphs (c, lookup_context); |
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prr
parents:
diff
changeset
|
1974 |
} |
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parents:
diff
changeset
|
1975 |
|
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parents:
diff
changeset
|
1976 |
inline bool would_apply (hb_would_apply_context_t *c) const |
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prr
parents:
diff
changeset
|
1977 |
{ |
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parents:
diff
changeset
|
1978 |
TRACE_WOULD_APPLY (this); |
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parents:
diff
changeset
|
1979 |
|
e496a8d8fc8a
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parents:
diff
changeset
|
1980 |
const ClassDef &backtrack_class_def = this+backtrackClassDef; |
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|
1981 |
const ClassDef &input_class_def = this+inputClassDef; |
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diff
changeset
|
1982 |
const ClassDef &lookahead_class_def = this+lookaheadClassDef; |
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changeset
|
1983 |
|
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|
1984 |
unsigned int index = input_class_def.get_class (c->glyphs[0]); |
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|
1985 |
const ChainRuleSet &rule_set = this+ruleSet[index]; |
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diff
changeset
|
1986 |
struct ChainContextApplyLookupContext lookup_context = { |
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diff
changeset
|
1987 |
{match_class}, |
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parents:
diff
changeset
|
1988 |
{&backtrack_class_def, |
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parents:
diff
changeset
|
1989 |
&input_class_def, |
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parents:
diff
changeset
|
1990 |
&lookahead_class_def} |
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diff
changeset
|
1991 |
}; |
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diff
changeset
|
1992 |
return_trace (rule_set.would_apply (c, lookup_context)); |
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parents:
diff
changeset
|
1993 |
} |
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parents:
diff
changeset
|
1994 |
|
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changeset
|
1995 |
inline const Coverage &get_coverage (void) const |
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changeset
|
1996 |
{ |
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parents:
diff
changeset
|
1997 |
return this+coverage; |
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parents:
diff
changeset
|
1998 |
} |
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diff
changeset
|
1999 |
|
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parents:
diff
changeset
|
2000 |
inline bool apply (hb_apply_context_t *c) const |
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parents:
diff
changeset
|
2001 |
{ |
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parents:
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changeset
|
2002 |
TRACE_APPLY (this); |
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parents:
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changeset
|
2003 |
unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint); |
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parents:
diff
changeset
|
2004 |
if (likely (index == NOT_COVERED)) return_trace (false); |
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parents:
diff
changeset
|
2005 |
|
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changeset
|
2006 |
const ClassDef &backtrack_class_def = this+backtrackClassDef; |
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parents:
diff
changeset
|
2007 |
const ClassDef &input_class_def = this+inputClassDef; |
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parents:
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changeset
|
2008 |
const ClassDef &lookahead_class_def = this+lookaheadClassDef; |
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parents:
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changeset
|
2009 |
|
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parents:
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changeset
|
2010 |
index = input_class_def.get_class (c->buffer->cur().codepoint); |
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changeset
|
2011 |
const ChainRuleSet &rule_set = this+ruleSet[index]; |
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diff
changeset
|
2012 |
struct ChainContextApplyLookupContext lookup_context = { |
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parents:
diff
changeset
|
2013 |
{match_class}, |
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parents:
diff
changeset
|
2014 |
{&backtrack_class_def, |
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parents:
diff
changeset
|
2015 |
&input_class_def, |
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prr
parents:
diff
changeset
|
2016 |
&lookahead_class_def} |
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prr
parents:
diff
changeset
|
2017 |
}; |
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parents:
diff
changeset
|
2018 |
return_trace (rule_set.apply (c, lookup_context)); |
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parents:
diff
changeset
|
2019 |
} |
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prr
parents:
diff
changeset
|
2020 |
|
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prr
parents:
diff
changeset
|
2021 |
inline bool sanitize (hb_sanitize_context_t *c) const |
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prr
parents:
diff
changeset
|
2022 |
{ |
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prr
parents:
diff
changeset
|
2023 |
TRACE_SANITIZE (this); |
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prr
parents:
diff
changeset
|
2024 |
return_trace (coverage.sanitize (c, this) && |
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prr
parents:
diff
changeset
|
2025 |
backtrackClassDef.sanitize (c, this) && |
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parents:
diff
changeset
|
2026 |
inputClassDef.sanitize (c, this) && |
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prr
parents:
diff
changeset
|
2027 |
lookaheadClassDef.sanitize (c, this) && |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2028 |
ruleSet.sanitize (c, this)); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2029 |
} |
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prr
parents:
diff
changeset
|
2030 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2031 |
protected: |
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prr
parents:
diff
changeset
|
2032 |
USHORT format; /* Format identifier--format = 2 */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2033 |
OffsetTo<Coverage> |
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parents:
diff
changeset
|
2034 |
coverage; /* Offset to Coverage table--from |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2035 |
* beginning of table */ |
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prr
parents:
diff
changeset
|
2036 |
OffsetTo<ClassDef> |
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prr
parents:
diff
changeset
|
2037 |
backtrackClassDef; /* Offset to glyph ClassDef table |
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prr
parents:
diff
changeset
|
2038 |
* containing backtrack sequence |
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prr
parents:
diff
changeset
|
2039 |
* data--from beginning of table */ |
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prr
parents:
diff
changeset
|
2040 |
OffsetTo<ClassDef> |
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prr
parents:
diff
changeset
|
2041 |
inputClassDef; /* Offset to glyph ClassDef |
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prr
parents:
diff
changeset
|
2042 |
* table containing input sequence |
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prr
parents:
diff
changeset
|
2043 |
* data--from beginning of table */ |
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prr
parents:
diff
changeset
|
2044 |
OffsetTo<ClassDef> |
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prr
parents:
diff
changeset
|
2045 |
lookaheadClassDef; /* Offset to glyph ClassDef table |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2046 |
* containing lookahead sequence |
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prr
parents:
diff
changeset
|
2047 |
* data--from beginning of table */ |
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parents:
diff
changeset
|
2048 |
OffsetArrayOf<ChainRuleSet> |
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parents:
diff
changeset
|
2049 |
ruleSet; /* Array of ChainRuleSet tables |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2050 |
* ordered by class */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2051 |
public: |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2052 |
DEFINE_SIZE_ARRAY (12, ruleSet); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2053 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2054 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2055 |
struct ChainContextFormat3 |
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prr
parents:
diff
changeset
|
2056 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2057 |
inline void closure (hb_closure_context_t *c) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2058 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2059 |
TRACE_CLOSURE (this); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2060 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2061 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2062 |
if (!(this+input[0]).intersects (c->glyphs)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2063 |
return; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2064 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2065 |
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input); |
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prr
parents:
diff
changeset
|
2066 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2067 |
struct ChainContextClosureLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2068 |
{intersects_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2069 |
{this, this, this} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2070 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2071 |
chain_context_closure_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2072 |
backtrack.len, (const USHORT *) backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2073 |
input.len, (const USHORT *) input.array + 1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2074 |
lookahead.len, (const USHORT *) lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2075 |
lookup.len, lookup.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2076 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2077 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2078 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2079 |
inline void collect_glyphs (hb_collect_glyphs_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2080 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2081 |
TRACE_COLLECT_GLYPHS (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2082 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2083 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2084 |
(this+input[0]).add_coverage (c->input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2085 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2086 |
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2087 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2088 |
struct ChainContextCollectGlyphsLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2089 |
{collect_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2090 |
{this, this, this} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2091 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2092 |
chain_context_collect_glyphs_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2093 |
backtrack.len, (const USHORT *) backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2094 |
input.len, (const USHORT *) input.array + 1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2095 |
lookahead.len, (const USHORT *) lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2096 |
lookup.len, lookup.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2097 |
lookup_context); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2098 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2099 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2100 |
inline bool would_apply (hb_would_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2101 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2102 |
TRACE_WOULD_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2103 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2104 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2105 |
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2106 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2107 |
struct ChainContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2108 |
{match_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2109 |
{this, this, this} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2110 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2111 |
return_trace (chain_context_would_apply_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2112 |
backtrack.len, (const USHORT *) backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2113 |
input.len, (const USHORT *) input.array + 1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2114 |
lookahead.len, (const USHORT *) lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2115 |
lookup.len, lookup.array, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2116 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2117 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2118 |
inline const Coverage &get_coverage (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2119 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2120 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2121 |
return this+input[0]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2122 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2123 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2124 |
inline bool apply (hb_apply_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2125 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2126 |
TRACE_APPLY (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2127 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2128 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2129 |
unsigned int index = (this+input[0]).get_coverage (c->buffer->cur().codepoint); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2130 |
if (likely (index == NOT_COVERED)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2131 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2132 |
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2133 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2134 |
struct ChainContextApplyLookupContext lookup_context = { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2135 |
{match_coverage}, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2136 |
{this, this, this} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2137 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2138 |
return_trace (chain_context_apply_lookup (c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2139 |
backtrack.len, (const USHORT *) backtrack.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2140 |
input.len, (const USHORT *) input.array + 1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2141 |
lookahead.len, (const USHORT *) lookahead.array, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2142 |
lookup.len, lookup.array, lookup_context)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2143 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2144 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2145 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2146 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2147 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2148 |
if (!backtrack.sanitize (c, this)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2149 |
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2150 |
if (!input.sanitize (c, this)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2151 |
if (!input.len) return_trace (false); /* To be consistent with Context. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2152 |
const OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2153 |
if (!lookahead.sanitize (c, this)) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2154 |
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2155 |
return_trace (lookup.sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2156 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2157 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2158 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2159 |
USHORT format; /* Format identifier--format = 3 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2160 |
OffsetArrayOf<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2161 |
backtrack; /* Array of coverage tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2162 |
* in backtracking sequence, in glyph |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2163 |
* sequence order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2164 |
OffsetArrayOf<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2165 |
inputX ; /* Array of coverage |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2166 |
* tables in input sequence, in glyph |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2167 |
* sequence order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2168 |
OffsetArrayOf<Coverage> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2169 |
lookaheadX; /* Array of coverage tables |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2170 |
* in lookahead sequence, in glyph |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2171 |
* sequence order */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2172 |
ArrayOf<LookupRecord> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2173 |
lookupX; /* Array of LookupRecords--in |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2174 |
* design order) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2175 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2176 |
DEFINE_SIZE_MIN (10); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2177 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2178 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2179 |
struct ChainContext |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2180 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2181 |
template <typename context_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2182 |
inline typename context_t::return_t dispatch (context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2183 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2184 |
TRACE_DISPATCH (this, u.format); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2185 |
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2186 |
switch (u.format) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2187 |
case 1: return_trace (c->dispatch (u.format1)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2188 |
case 2: return_trace (c->dispatch (u.format2)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2189 |
case 3: return_trace (c->dispatch (u.format3)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2190 |
default:return_trace (c->default_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2191 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2192 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2193 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2194 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2195 |
union { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2196 |
USHORT format; /* Format identifier */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2197 |
ChainContextFormat1 format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2198 |
ChainContextFormat2 format2; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2199 |
ChainContextFormat3 format3; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2200 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2201 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2202 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2203 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2204 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2205 |
struct ExtensionFormat1 |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2206 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2207 |
inline unsigned int get_type (void) const { return extensionLookupType; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2208 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2209 |
template <typename X> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2210 |
inline const X& get_subtable (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2211 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2212 |
unsigned int offset = extensionOffset; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2213 |
if (unlikely (!offset)) return Null(typename T::LookupSubTable); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2214 |
return StructAtOffset<typename T::LookupSubTable> (this, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2215 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2216 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2217 |
template <typename context_t> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2218 |
inline typename context_t::return_t dispatch (context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2219 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2220 |
TRACE_DISPATCH (this, format); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2221 |
if (unlikely (!c->may_dispatch (this, this))) return_trace (c->no_dispatch_return_value ()); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2222 |
return_trace (get_subtable<typename T::LookupSubTable> ().dispatch (c, get_type ())); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2223 |
} |
e496a8d8fc8a
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parents:
diff
changeset
|
2224 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2225 |
/* This is called from may_dispatch() above with hb_sanitize_context_t. */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2226 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2227 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2228 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2229 |
return_trace (c->check_struct (this) && extensionOffset != 0); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2230 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2231 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2232 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2233 |
USHORT format; /* Format identifier. Set to 1. */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2234 |
USHORT extensionLookupType; /* Lookup type of subtable referenced |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2235 |
* by ExtensionOffset (i.e. the |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2236 |
* extension subtable). */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2237 |
ULONG extensionOffset; /* Offset to the extension subtable, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2238 |
* of lookup type subtable. */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2239 |
public: |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2240 |
DEFINE_SIZE_STATIC (8); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2241 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2242 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2243 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2244 |
struct Extension |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2245 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2246 |
inline unsigned int get_type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2247 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2248 |
switch (u.format) { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2249 |
case 1: return u.format1.get_type (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2250 |
default:return 0; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2251 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2252 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2253 |
template <typename X> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2254 |
inline const X& get_subtable (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2255 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2256 |
switch (u.format) { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2257 |
case 1: return u.format1.template get_subtable<typename T::LookupSubTable> (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2258 |
default:return Null(typename T::LookupSubTable); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2259 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2260 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2261 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2262 |
template <typename context_t> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2263 |
inline typename context_t::return_t dispatch (context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2264 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2265 |
TRACE_DISPATCH (this, u.format); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2266 |
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ()); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2267 |
switch (u.format) { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2268 |
case 1: return_trace (u.format1.dispatch (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2269 |
default:return_trace (c->default_return_value ()); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2270 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2271 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2272 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2273 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2274 |
union { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2275 |
USHORT format; /* Format identifier */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2276 |
ExtensionFormat1<T> format1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2277 |
} u; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2278 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2279 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2280 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2281 |
/* |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2282 |
* GSUB/GPOS Common |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2283 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2284 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2285 |
struct GSUBGPOS |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2286 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2287 |
static const hb_tag_t GSUBTag = HB_OT_TAG_GSUB; |
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prr
parents:
diff
changeset
|
2288 |
static const hb_tag_t GPOSTag = HB_OT_TAG_GPOS; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2289 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2290 |
inline unsigned int get_script_count (void) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2291 |
{ return (this+scriptList).len; } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2292 |
inline const Tag& get_script_tag (unsigned int i) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2293 |
{ return (this+scriptList).get_tag (i); } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2294 |
inline unsigned int get_script_tags (unsigned int start_offset, |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2295 |
unsigned int *script_count /* IN/OUT */, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2296 |
hb_tag_t *script_tags /* OUT */) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2297 |
{ return (this+scriptList).get_tags (start_offset, script_count, script_tags); } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2298 |
inline const Script& get_script (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2299 |
{ return (this+scriptList)[i]; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2300 |
inline bool find_script_index (hb_tag_t tag, unsigned int *index) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2301 |
{ return (this+scriptList).find_index (tag, index); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2302 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2303 |
inline unsigned int get_feature_count (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2304 |
{ return (this+featureList).len; } |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
2305 |
inline hb_tag_t get_feature_tag (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2306 |
{ return i == Index::NOT_FOUND_INDEX ? HB_TAG_NONE : (this+featureList).get_tag (i); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2307 |
inline unsigned int get_feature_tags (unsigned int start_offset, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2308 |
unsigned int *feature_count /* IN/OUT */, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2309 |
hb_tag_t *feature_tags /* OUT */) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2310 |
{ return (this+featureList).get_tags (start_offset, feature_count, feature_tags); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2311 |
inline const Feature& get_feature (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2312 |
{ return (this+featureList)[i]; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2313 |
inline bool find_feature_index (hb_tag_t tag, unsigned int *index) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2314 |
{ return (this+featureList).find_index (tag, index); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2315 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2316 |
inline unsigned int get_lookup_count (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2317 |
{ return (this+lookupList).len; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2318 |
inline const Lookup& get_lookup (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2319 |
{ return (this+lookupList)[i]; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2320 |
|
43232 | 2321 |
inline bool find_variations_index (const int *coords, unsigned int num_coords, |
2322 |
unsigned int *index) const |
|
2323 |
{ return (version.to_int () >= 0x00010001u ? this+featureVars : Null(FeatureVariations)) |
|
2324 |
.find_index (coords, num_coords, index); } |
|
2325 |
inline const Feature& get_feature_variation (unsigned int feature_index, |
|
2326 |
unsigned int variations_index) const |
|
2327 |
{ |
|
2328 |
if (FeatureVariations::NOT_FOUND_INDEX != variations_index && |
|
2329 |
version.to_int () >= 0x00010001u) |
|
2330 |
{ |
|
2331 |
const Feature *feature = (this+featureVars).find_substitute (variations_index, |
|
2332 |
feature_index); |
|
2333 |
if (feature) |
|
2334 |
return *feature; |
|
2335 |
} |
|
2336 |
return get_feature (feature_index); |
|
2337 |
} |
|
2338 |
||
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2339 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2340 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2341 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2342 |
return_trace (version.sanitize (c) && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2343 |
likely (version.major == 1) && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2344 |
scriptList.sanitize (c, this) && |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2345 |
featureList.sanitize (c, this) && |
43232 | 2346 |
lookupList.sanitize (c, this) && |
2347 |
(version.to_int () < 0x00010001u || featureVars.sanitize (c, this))); |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2348 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2349 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2350 |
protected: |
40435 | 2351 |
FixedVersion<>version; /* Version of the GSUB/GPOS table--initially set |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2352 |
* to 0x00010000u */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2353 |
OffsetTo<ScriptList> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2354 |
scriptList; /* ScriptList table */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2355 |
OffsetTo<FeatureList> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2356 |
featureList; /* FeatureList table */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2357 |
OffsetTo<LookupList> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
2358 |
lookupList; /* LookupList table */ |
48274 | 2359 |
LOffsetTo<FeatureVariations> |
43232 | 2360 |
featureVars; /* Offset to Feature Variations |
2361 |
table--from beginning of table |
|
2362 |
* (may be NULL). Introduced |
|
2363 |
* in version 0x00010001. */ |
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public: |
43232 | 2365 |
DEFINE_SIZE_MIN (10); |
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}; |
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2367 |
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2368 |
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} /* namespace OT */ |
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2370 |
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#endif /* HB_OT_LAYOUT_GSUBGPOS_PRIVATE_HH */ |