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 © 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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#ifndef HB_OPEN_TYPE_PRIVATE_HH |
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#define HB_OPEN_TYPE_PRIVATE_HH |
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#include "hb-private.hh" |
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#include "hb-debug.hh" |
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#include "hb-face-private.hh" |
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namespace OT { |
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/* |
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* Casts |
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*/ |
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/* Cast to struct T, reference to reference */ |
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template<typename Type, typename TObject> |
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static inline const Type& CastR(const TObject &X) |
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{ return reinterpret_cast<const Type&> (X); } |
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template<typename Type, typename TObject> |
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static inline Type& CastR(TObject &X) |
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{ return reinterpret_cast<Type&> (X); } |
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/* Cast to struct T, pointer to pointer */ |
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template<typename Type, typename TObject> |
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static inline const Type* CastP(const TObject *X) |
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{ return reinterpret_cast<const Type*> (X); } |
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template<typename Type, typename TObject> |
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static inline Type* CastP(TObject *X) |
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{ return reinterpret_cast<Type*> (X); } |
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/* StructAtOffset<T>(P,Ofs) returns the struct T& that is placed at memory |
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* location pointed to by P plus Ofs bytes. */ |
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template<typename Type> |
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static inline const Type& StructAtOffset(const void *P, unsigned int offset) |
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{ return * reinterpret_cast<const Type*> ((const char *) P + offset); } |
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template<typename Type> |
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static inline Type& StructAtOffset(void *P, unsigned int offset) |
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{ return * reinterpret_cast<Type*> ((char *) P + offset); } |
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/* StructAfter<T>(X) returns the struct T& that is placed after X. |
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* Works with X of variable size also. X must implement get_size() */ |
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template<typename Type, typename TObject> |
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static inline const Type& StructAfter(const TObject &X) |
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{ return StructAtOffset<Type>(&X, X.get_size()); } |
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template<typename Type, typename TObject> |
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static inline Type& StructAfter(TObject &X) |
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{ return StructAtOffset<Type>(&X, X.get_size()); } |
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/* |
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* Size checking |
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*/ |
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/* Check _assertion in a method environment */ |
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#define _DEFINE_INSTANCE_ASSERTION1(_line, _assertion) \ |
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inline void _instance_assertion_on_line_##_line (void) const \ |
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{ \ |
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static_assert ((_assertion), ""); \ |
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ASSERT_INSTANCE_POD (*this); /* Make sure it's POD. */ \ |
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} |
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# define _DEFINE_INSTANCE_ASSERTION0(_line, _assertion) _DEFINE_INSTANCE_ASSERTION1 (_line, _assertion) |
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# define DEFINE_INSTANCE_ASSERTION(_assertion) _DEFINE_INSTANCE_ASSERTION0 (__LINE__, _assertion) |
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/* Check that _code compiles in a method environment */ |
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#define _DEFINE_COMPILES_ASSERTION1(_line, _code) \ |
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inline void _compiles_assertion_on_line_##_line (void) const \ |
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{ _code; } |
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# define _DEFINE_COMPILES_ASSERTION0(_line, _code) _DEFINE_COMPILES_ASSERTION1 (_line, _code) |
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# define DEFINE_COMPILES_ASSERTION(_code) _DEFINE_COMPILES_ASSERTION0 (__LINE__, _code) |
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#define DEFINE_SIZE_STATIC(size) \ |
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DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size)); \ |
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static const unsigned int static_size = (size); \ |
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static const unsigned int min_size = (size); \ |
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inline unsigned int get_size (void) const { return (size); } |
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#define DEFINE_SIZE_UNION(size, _member) \ |
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DEFINE_INSTANCE_ASSERTION (0*sizeof(this->u._member.static_size) + sizeof(this->u._member) == (size)); \ |
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static const unsigned int min_size = (size) |
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#define DEFINE_SIZE_MIN(size) \ |
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DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)); \ |
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static const unsigned int min_size = (size) |
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#define DEFINE_SIZE_ARRAY(size, array) \ |
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DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + sizeof (array[0])); \ |
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DEFINE_COMPILES_ASSERTION ((void) array[0].static_size) \ |
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static const unsigned int min_size = (size) |
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#define DEFINE_SIZE_ARRAY2(size, array1, array2) \ |
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DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size) + sizeof (this->array1[0]) + sizeof (this->array2[0])); \ |
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DEFINE_COMPILES_ASSERTION ((void) array1[0].static_size; (void) array2[0].static_size) \ |
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static const unsigned int min_size = (size) |
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126 |
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127 |
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128 |
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/* |
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* Null objects |
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*/ |
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132 |
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/* Global nul-content Null pool. Enlarge as necessary. */ |
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#define HB_NULL_POOL_SIZE 264 |
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static_assert (HB_NULL_POOL_SIZE % sizeof (void *) == 0, "Align HB_NULL_POOL_SIZE."); |
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extern HB_INTERNAL const void * const _hb_NullPool[HB_NULL_POOL_SIZE / sizeof (void *)]; |
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138 |
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/* Generic nul-content Null objects. */ |
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template <typename Type> |
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static inline const Type& Null (void) { |
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static_assert (sizeof (Type) <= HB_NULL_POOL_SIZE, "Increase HB_NULL_POOL_SIZE."); |
143 |
return *CastP<Type> (_hb_NullPool); |
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} |
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145 |
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146 |
/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */ |
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#define DEFINE_NULL_DATA(Type, data) \ |
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static const char _Null##Type[sizeof (Type) + 1] = data; /* +1 is for nul-termination in data */ \ |
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149 |
template <> \ |
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/*static*/ inline const Type& Null<Type> (void) { \ |
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return *CastP<Type> (_Null##Type); \ |
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} /* The following line really exists such that we end in a place needing semicolon */ \ |
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static_assert (Type::min_size + 1 <= sizeof (_Null##Type), "Null pool too small. Enlarge.") |
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154 |
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155 |
/* Accessor macro. */ |
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#define Null(Type) Null<Type>() |
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157 |
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158 |
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159 |
/* |
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160 |
* Dispatch |
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161 |
*/ |
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162 |
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163 |
template <typename Context, typename Return, unsigned int MaxDebugDepth> |
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struct hb_dispatch_context_t |
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165 |
{ |
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static const unsigned int max_debug_depth = MaxDebugDepth; |
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typedef Return return_t; |
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template <typename T, typename F> |
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inline bool may_dispatch (const T *obj, const F *format) { return true; } |
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static return_t no_dispatch_return_value (void) { return Context::default_return_value (); } |
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171 |
}; |
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172 |
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173 |
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174 |
/* |
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175 |
* Sanitize |
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176 |
*/ |
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177 |
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178 |
/* This limits sanitizing time on really broken fonts. */ |
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179 |
#ifndef HB_SANITIZE_MAX_EDITS |
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#define HB_SANITIZE_MAX_EDITS 32 |
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181 |
#endif |
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182 |
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183 |
struct hb_sanitize_context_t : |
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184 |
hb_dispatch_context_t<hb_sanitize_context_t, bool, HB_DEBUG_SANITIZE> |
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185 |
{ |
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inline hb_sanitize_context_t (void) : |
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debug_depth (0), |
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start (nullptr), end (nullptr), |
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writable (false), edit_count (0), |
48274 | 190 |
blob (nullptr) {} |
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191 |
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192 |
inline const char *get_name (void) { return "SANITIZE"; } |
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193 |
template <typename T, typename F> |
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inline bool may_dispatch (const T *obj, const F *format) |
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{ return format->sanitize (this); } |
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196 |
template <typename T> |
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inline return_t dispatch (const T &obj) { return obj.sanitize (this); } |
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static return_t default_return_value (void) { return true; } |
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199 |
static return_t no_dispatch_return_value (void) { return false; } |
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bool stop_sublookup_iteration (const return_t r) const { return !r; } |
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201 |
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202 |
inline void init (hb_blob_t *b) |
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203 |
{ |
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this->blob = hb_blob_reference (b); |
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205 |
this->writable = false; |
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206 |
} |
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207 |
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208 |
inline void start_processing (void) |
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209 |
{ |
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this->start = hb_blob_get_data (this->blob, nullptr); |
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this->end = this->start + hb_blob_get_length (this->blob); |
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assert (this->start <= this->end); /* Must not overflow. */ |
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this->edit_count = 0; |
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this->debug_depth = 0; |
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215 |
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216 |
DEBUG_MSG_LEVEL (SANITIZE, start, 0, +1, |
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"start [%p..%p] (%lu bytes)", |
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this->start, this->end, |
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(unsigned long) (this->end - this->start)); |
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220 |
} |
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221 |
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222 |
inline void end_processing (void) |
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223 |
{ |
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224 |
DEBUG_MSG_LEVEL (SANITIZE, this->start, 0, -1, |
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"end [%p..%p] %u edit requests", |
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this->start, this->end, this->edit_count); |
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227 |
|
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228 |
hb_blob_destroy (this->blob); |
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this->blob = nullptr; |
230 |
this->start = this->end = nullptr; |
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231 |
} |
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232 |
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inline bool check_range (const void *base, unsigned int len) const |
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{ |
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const char *p = (const char *) base; |
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bool ok = this->start <= p && p <= this->end && (unsigned int) (this->end - p) >= len; |
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DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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"check_range [%p..%p] (%d bytes) in [%p..%p] -> %s", |
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p, p + len, len, |
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this->start, this->end, |
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ok ? "OK" : "OUT-OF-RANGE"); |
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243 |
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return likely (ok); |
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} |
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inline bool check_array (const void *base, unsigned int record_size, unsigned int len) const |
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{ |
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const char *p = (const char *) base; |
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bool overflows = _hb_unsigned_int_mul_overflows (len, record_size); |
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unsigned int array_size = record_size * len; |
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bool ok = !overflows && this->check_range (base, array_size); |
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DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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255 |
"check_array [%p..%p] (%d*%d=%d bytes) in [%p..%p] -> %s", |
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parents:
diff
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|
256 |
p, p + (record_size * len), record_size, len, (unsigned int) array_size, |
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parents:
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|
257 |
this->start, this->end, |
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|
258 |
overflows ? "OVERFLOWS" : ok ? "OK" : "OUT-OF-RANGE"); |
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|
259 |
|
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|
260 |
return likely (ok); |
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parents:
diff
changeset
|
261 |
} |
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diff
changeset
|
262 |
|
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diff
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|
263 |
template <typename Type> |
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diff
changeset
|
264 |
inline bool check_struct (const Type *obj) const |
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parents:
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|
265 |
{ |
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parents:
diff
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|
266 |
return likely (this->check_range (obj, obj->min_size)); |
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parents:
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|
267 |
} |
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parents:
diff
changeset
|
268 |
|
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parents:
diff
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|
269 |
inline bool may_edit (const void *base HB_UNUSED, unsigned int len HB_UNUSED) |
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parents:
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|
270 |
{ |
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parents:
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|
271 |
if (this->edit_count >= HB_SANITIZE_MAX_EDITS) |
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|
272 |
return false; |
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parents:
diff
changeset
|
273 |
|
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|
274 |
const char *p = (const char *) base; |
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parents:
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|
275 |
this->edit_count++; |
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parents:
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changeset
|
276 |
|
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parents:
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changeset
|
277 |
DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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parents:
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changeset
|
278 |
"may_edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s", |
e496a8d8fc8a
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parents:
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|
279 |
this->edit_count, |
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parents:
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changeset
|
280 |
p, p + len, len, |
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parents:
diff
changeset
|
281 |
this->start, this->end, |
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parents:
diff
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|
282 |
this->writable ? "GRANTED" : "DENIED"); |
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prr
parents:
diff
changeset
|
283 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
284 |
return this->writable; |
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prr
parents:
diff
changeset
|
285 |
} |
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parents:
diff
changeset
|
286 |
|
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parents:
diff
changeset
|
287 |
template <typename Type, typename ValueType> |
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parents:
diff
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|
288 |
inline bool try_set (const Type *obj, const ValueType &v) { |
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prr
parents:
diff
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|
289 |
if (this->may_edit (obj, obj->static_size)) { |
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parents:
diff
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|
290 |
const_cast<Type *> (obj)->set (v); |
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parents:
diff
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|
291 |
return true; |
e496a8d8fc8a
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parents:
diff
changeset
|
292 |
} |
e496a8d8fc8a
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parents:
diff
changeset
|
293 |
return false; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
294 |
} |
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parents:
diff
changeset
|
295 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
296 |
mutable unsigned int debug_depth; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
297 |
const char *start, *end; |
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prr
parents:
diff
changeset
|
298 |
bool writable; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
299 |
unsigned int edit_count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
300 |
hb_blob_t *blob; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
301 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
302 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
303 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
304 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
305 |
/* Template to sanitize an object. */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
306 |
template <typename Type> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
307 |
struct Sanitizer |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
308 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
309 |
static hb_blob_t *sanitize (hb_blob_t *blob) { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
310 |
hb_sanitize_context_t c[1]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
311 |
bool sane; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
312 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
313 |
/* TODO is_sane() stuff */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
314 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
315 |
c->init (blob); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
316 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
317 |
retry: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
318 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "start"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
319 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
320 |
c->start_processing (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
321 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
322 |
if (unlikely (!c->start)) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
323 |
c->end_processing (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
324 |
return blob; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
325 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
326 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
327 |
Type *t = CastP<Type> (const_cast<char *> (c->start)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
328 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
329 |
sane = t->sanitize (c); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
330 |
if (sane) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
331 |
if (c->edit_count) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
332 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "passed first round with %d edits; going for second round", c->edit_count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
333 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
334 |
/* sanitize again to ensure no toe-stepping */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
335 |
c->edit_count = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
336 |
sane = t->sanitize (c); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
337 |
if (c->edit_count) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
338 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "requested %d edits in second round; FAILLING", c->edit_count); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
339 |
sane = false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
340 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
341 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
342 |
} else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
343 |
unsigned int edit_count = c->edit_count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
344 |
if (edit_count && !c->writable) { |
48274 | 345 |
c->start = hb_blob_get_data_writable (blob, nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
346 |
c->end = c->start + hb_blob_get_length (blob); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
347 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
348 |
if (c->start) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
349 |
c->writable = true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
350 |
/* ok, we made it writable by relocating. try again */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
351 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "retry"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
352 |
goto retry; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
353 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
354 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
355 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
356 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
357 |
c->end_processing (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
358 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
359 |
DEBUG_MSG_FUNC (SANITIZE, c->start, sane ? "PASSED" : "FAILED"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
360 |
if (sane) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
361 |
return blob; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
362 |
else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
363 |
hb_blob_destroy (blob); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
364 |
return hb_blob_get_empty (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
365 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
366 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
367 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
368 |
static const Type* lock_instance (hb_blob_t *blob) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
369 |
hb_blob_make_immutable (blob); |
48274 | 370 |
const char *base = hb_blob_get_data (blob, nullptr); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
371 |
return unlikely (!base) ? &Null(Type) : CastP<Type> (base); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
372 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
373 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
374 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
375 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
376 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
377 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
378 |
* Serialize |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
379 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
380 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
381 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
382 |
struct hb_serialize_context_t |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
383 |
{ |
40435 | 384 |
inline hb_serialize_context_t (void *start_, unsigned int size) |
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|
385 |
{ |
40435 | 386 |
this->start = (char *) start_; |
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|
387 |
this->end = this->start + size; |
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changeset
|
388 |
|
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prr
parents:
diff
changeset
|
389 |
this->ran_out_of_room = false; |
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prr
parents:
diff
changeset
|
390 |
this->head = this->start; |
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prr
parents:
diff
changeset
|
391 |
this->debug_depth = 0; |
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prr
parents:
diff
changeset
|
392 |
} |
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prr
parents:
diff
changeset
|
393 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
394 |
template <typename Type> |
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prr
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diff
changeset
|
395 |
inline Type *start_serialize (void) |
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prr
parents:
diff
changeset
|
396 |
{ |
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prr
parents:
diff
changeset
|
397 |
DEBUG_MSG_LEVEL (SERIALIZE, this->start, 0, +1, |
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prr
parents:
diff
changeset
|
398 |
"start [%p..%p] (%lu bytes)", |
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prr
parents:
diff
changeset
|
399 |
this->start, this->end, |
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prr
parents:
diff
changeset
|
400 |
(unsigned long) (this->end - this->start)); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
401 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
402 |
return start_embed<Type> (); |
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prr
parents:
diff
changeset
|
403 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
404 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
405 |
inline void end_serialize (void) |
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prr
parents:
diff
changeset
|
406 |
{ |
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prr
parents:
diff
changeset
|
407 |
DEBUG_MSG_LEVEL (SERIALIZE, this->start, 0, -1, |
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prr
parents:
diff
changeset
|
408 |
"end [%p..%p] serialized %d bytes; %s", |
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prr
parents:
diff
changeset
|
409 |
this->start, this->end, |
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prr
parents:
diff
changeset
|
410 |
(int) (this->head - this->start), |
e496a8d8fc8a
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parents:
diff
changeset
|
411 |
this->ran_out_of_room ? "RAN OUT OF ROOM" : "did not ran out of room"); |
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prr
parents:
diff
changeset
|
412 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
413 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
414 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
415 |
template <typename Type> |
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prr
parents:
diff
changeset
|
416 |
inline Type *copy (void) |
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prr
parents:
diff
changeset
|
417 |
{ |
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prr
parents:
diff
changeset
|
418 |
assert (!this->ran_out_of_room); |
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prr
parents:
diff
changeset
|
419 |
unsigned int len = this->head - this->start; |
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prr
parents:
diff
changeset
|
420 |
void *p = malloc (len); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
421 |
if (p) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
422 |
memcpy (p, this->start, len); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
423 |
return reinterpret_cast<Type *> (p); |
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prr
parents:
diff
changeset
|
424 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
425 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
426 |
template <typename Type> |
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prr
parents:
diff
changeset
|
427 |
inline Type *allocate_size (unsigned int size) |
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prr
parents:
diff
changeset
|
428 |
{ |
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prr
parents:
diff
changeset
|
429 |
if (unlikely (this->ran_out_of_room || this->end - this->head < ptrdiff_t (size))) { |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
430 |
this->ran_out_of_room = true; |
48274 | 431 |
return nullptr; |
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changeset
|
432 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
433 |
memset (this->head, 0, size); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
434 |
char *ret = this->head; |
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prr
parents:
diff
changeset
|
435 |
this->head += size; |
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prr
parents:
diff
changeset
|
436 |
return reinterpret_cast<Type *> (ret); |
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prr
parents:
diff
changeset
|
437 |
} |
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prr
parents:
diff
changeset
|
438 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
439 |
template <typename Type> |
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prr
parents:
diff
changeset
|
440 |
inline Type *allocate_min (void) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
441 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
442 |
return this->allocate_size<Type> (Type::min_size); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
443 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
444 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
445 |
template <typename Type> |
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prr
parents:
diff
changeset
|
446 |
inline Type *start_embed (void) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
447 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
448 |
Type *ret = reinterpret_cast<Type *> (this->head); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
449 |
return ret; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
450 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
451 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
452 |
template <typename Type> |
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prr
parents:
diff
changeset
|
453 |
inline Type *embed (const Type &obj) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
454 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
455 |
unsigned int size = obj.get_size (); |
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prr
parents:
diff
changeset
|
456 |
Type *ret = this->allocate_size<Type> (size); |
48274 | 457 |
if (unlikely (!ret)) return nullptr; |
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parents:
diff
changeset
|
458 |
memcpy (ret, obj, size); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
459 |
return ret; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
460 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
461 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
462 |
template <typename Type> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
463 |
inline Type *extend_min (Type &obj) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
464 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
465 |
unsigned int size = obj.min_size; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
466 |
assert (this->start <= (char *) &obj && (char *) &obj <= this->head && (char *) &obj + size >= this->head); |
48274 | 467 |
if (unlikely (!this->allocate_size<Type> (((char *) &obj) + size - this->head))) return nullptr; |
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parents:
diff
changeset
|
468 |
return reinterpret_cast<Type *> (&obj); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
469 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
470 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
471 |
template <typename Type> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
472 |
inline Type *extend (Type &obj) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
473 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
474 |
unsigned int size = obj.get_size (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
475 |
assert (this->start < (char *) &obj && (char *) &obj <= this->head && (char *) &obj + size >= this->head); |
48274 | 476 |
if (unlikely (!this->allocate_size<Type> (((char *) &obj) + size - this->head))) return nullptr; |
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parents:
diff
changeset
|
477 |
return reinterpret_cast<Type *> (&obj); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
478 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
479 |
|
40435 | 480 |
inline void truncate (void *new_head) |
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prr
parents:
diff
changeset
|
481 |
{ |
40435 | 482 |
assert (this->start < new_head && new_head <= this->head); |
483 |
this->head = (char *) new_head; |
|
34414
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parents:
diff
changeset
|
484 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
485 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
486 |
unsigned int debug_depth; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
487 |
char *start, *end, *head; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
488 |
bool ran_out_of_room; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
489 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
490 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
491 |
template <typename Type> |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
492 |
struct Supplier |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
493 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
494 |
inline Supplier (const Type *array, unsigned int len_) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
495 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
496 |
head = array; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
497 |
len = len_; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
498 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
499 |
inline const Type operator [] (unsigned int i) const |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
500 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
501 |
if (unlikely (i >= len)) return Type (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
502 |
return head[i]; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
503 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
504 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
505 |
inline void advance (unsigned int count) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
506 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
507 |
if (unlikely (count > len)) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
508 |
count = len; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
509 |
len -= count; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
510 |
head += count; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
511 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
512 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
513 |
private: |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
514 |
inline Supplier (const Supplier<Type> &); /* Disallow copy */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
515 |
inline Supplier<Type>& operator= (const Supplier<Type> &); /* Disallow copy */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
516 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
517 |
unsigned int len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
518 |
const Type *head; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
519 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
520 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
521 |
|
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
524 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
525 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
526 |
* The OpenType Font File: Data Types |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
529 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
530 |
/* "The following data types are used in the OpenType font file. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
531 |
* All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
532 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
533 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
534 |
* Int types |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
535 |
*/ |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
538 |
template <typename Type, int Bytes> struct BEInt; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
539 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
540 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
541 |
struct BEInt<Type, 1> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
542 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
543 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
544 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
545 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
546 |
v = V; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
547 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
548 |
inline operator Type (void) const |
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 |
return v; |
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 |
private: uint8_t v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
553 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
554 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
555 |
struct BEInt<Type, 2> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
556 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
557 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
558 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
559 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
560 |
v[0] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
561 |
v[1] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
562 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
563 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
564 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
565 |
return (v[0] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
566 |
+ (v[1] ); |
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 |
private: uint8_t v[2]; |
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 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
571 |
struct BEInt<Type, 3> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
572 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
573 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
574 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
575 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
576 |
v[0] = (V >> 16) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
577 |
v[1] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
578 |
v[2] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
579 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
580 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
581 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
582 |
return (v[0] << 16) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
583 |
+ (v[1] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
584 |
+ (v[2] ); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
585 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
586 |
private: uint8_t v[3]; |
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 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
589 |
struct BEInt<Type, 4> |
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 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
592 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
593 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
594 |
v[0] = (V >> 24) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
595 |
v[1] = (V >> 16) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
596 |
v[2] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
597 |
v[3] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
598 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
599 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
600 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
601 |
return (v[0] << 24) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
602 |
+ (v[1] << 16) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
603 |
+ (v[2] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
604 |
+ (v[3] ); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
605 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
606 |
private: uint8_t v[4]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
607 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
608 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
609 |
/* Integer types in big-endian order and no alignment requirement */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
610 |
template <typename Type, unsigned int Size> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
611 |
struct IntType |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
612 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
613 |
inline void set (Type i) { v.set (i); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
614 |
inline operator Type(void) const { return v; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
615 |
inline bool operator == (const IntType<Type,Size> &o) const { return (Type) v == (Type) o.v; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
616 |
inline bool operator != (const IntType<Type,Size> &o) const { return !(*this == o); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
617 |
static inline int cmp (const IntType<Type,Size> *a, const IntType<Type,Size> *b) { return b->cmp (*a); } |
48274 | 618 |
template <typename Type2> |
619 |
inline int cmp (Type2 a) const |
|
34414
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 |
Type b = v; |
48274 | 622 |
if (sizeof (Type) < sizeof (int) && sizeof (Type2) < sizeof (int)) |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
623 |
return (int) a - (int) b; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
624 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
625 |
return a < b ? -1 : a == b ? 0 : +1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
626 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
627 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
628 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
629 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
630 |
return_trace (likely (c->check_struct (this))); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
631 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
632 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
633 |
BEInt<Type, Size> v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
634 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
635 |
DEFINE_SIZE_STATIC (Size); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
636 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
637 |
|
48274 | 638 |
typedef IntType<int8_t, 1> CHAR; /* 8-bit signed integer. */ |
639 |
typedef IntType<uint8_t, 1> BYTE; /* 8-bit unsigned integer. */ |
|
640 |
typedef IntType<int8_t, 1> INT8; /* 8-bit signed integer. */ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
641 |
typedef IntType<uint16_t, 2> USHORT; /* 16-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
642 |
typedef IntType<int16_t, 2> SHORT; /* 16-bit signed integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
643 |
typedef IntType<uint32_t, 4> ULONG; /* 32-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
644 |
typedef IntType<int32_t, 4> LONG; /* 32-bit signed integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
645 |
typedef IntType<uint32_t, 3> UINT24; /* 24-bit unsigned integer. */ |
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 |
/* 16-bit signed integer (SHORT) that describes a quantity in FUnits. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
648 |
typedef SHORT FWORD; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
649 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
650 |
/* 16-bit unsigned integer (USHORT) that describes a quantity in FUnits. */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
651 |
typedef USHORT UFWORD; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
652 |
|
40435 | 653 |
/* 16-bit signed fixed number with the low 14 bits of fraction (2.14). */ |
654 |
struct F2DOT14 : SHORT |
|
655 |
{ |
|
656 |
//inline float to_float (void) const { return ???; } |
|
657 |
//inline void set_float (float f) { v.set (f * ???); } |
|
658 |
public: |
|
659 |
DEFINE_SIZE_STATIC (2); |
|
660 |
}; |
|
661 |
||
662 |
/* 32-bit signed fixed-point number (16.16). */ |
|
663 |
struct Fixed: LONG |
|
664 |
{ |
|
665 |
//inline float to_float (void) const { return ???; } |
|
666 |
//inline void set_float (float f) { v.set (f * ???); } |
|
667 |
public: |
|
668 |
DEFINE_SIZE_STATIC (4); |
|
669 |
}; |
|
670 |
||
34414
e496a8d8fc8a
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prr
parents:
diff
changeset
|
671 |
/* Date represented in number of seconds since 12:00 midnight, January 1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
672 |
* 1904. The value is represented as a signed 64-bit integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
673 |
struct LONGDATETIME |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
674 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
675 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
676 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
677 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
678 |
return_trace (likely (c->check_struct (this))); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
679 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
680 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
681 |
LONG major; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
682 |
ULONG minor; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
683 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
684 |
DEFINE_SIZE_STATIC (8); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
685 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
686 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
687 |
/* Array of four uint8s (length = 32 bits) used to identify a script, language |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
688 |
* system, feature, or baseline */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
689 |
struct Tag : ULONG |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
690 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
691 |
/* What the char* converters return is NOT nul-terminated. Print using "%.4s" */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
692 |
inline operator const char* (void) const { return reinterpret_cast<const char *> (&this->v); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
693 |
inline operator char* (void) { return reinterpret_cast<char *> (&this->v); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
694 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
695 |
DEFINE_SIZE_STATIC (4); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
696 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
697 |
DEFINE_NULL_DATA (Tag, " "); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
698 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
699 |
/* Glyph index number, same as uint16 (length = 16 bits) */ |
48274 | 700 |
typedef USHORT GlyphID; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
701 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
702 |
/* Script/language-system/feature index */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
703 |
struct Index : USHORT { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
704 |
static const unsigned int NOT_FOUND_INDEX = 0xFFFFu; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
705 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
706 |
DEFINE_NULL_DATA (Index, "\xff\xff"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
707 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
708 |
/* Offset, Null offset = 0 */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
709 |
template <typename Type=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
710 |
struct Offset : Type |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
711 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
712 |
inline bool is_null (void) const { return 0 == *this; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
713 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
714 |
DEFINE_SIZE_STATIC (sizeof(Type)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
718 |
/* CheckSum */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
719 |
struct CheckSum : ULONG |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
720 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
721 |
/* This is reference implementation from the spec. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
722 |
static inline uint32_t CalcTableChecksum (const ULONG *Table, uint32_t Length) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
723 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
724 |
uint32_t Sum = 0L; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
725 |
const ULONG *EndPtr = Table+((Length+3) & ~3) / ULONG::static_size; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
726 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
727 |
while (Table < EndPtr) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
728 |
Sum += *Table++; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
729 |
return Sum; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
730 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
731 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
732 |
/* Note: data should be 4byte aligned and have 4byte padding at the end. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
733 |
inline void set_for_data (const void *data, unsigned int length) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
734 |
{ set (CalcTableChecksum ((const ULONG *) data, length)); } |
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 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
737 |
DEFINE_SIZE_STATIC (4); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
738 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
739 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
740 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
741 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
742 |
* Version Numbers |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
743 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
744 |
|
40435 | 745 |
template <typename FixedType=USHORT> |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
746 |
struct FixedVersion |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
747 |
{ |
40435 | 748 |
inline uint32_t to_int (void) const { return (major << (sizeof(FixedType) * 8)) + minor; } |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
749 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
750 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
751 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
752 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
753 |
return_trace (c->check_struct (this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
754 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
755 |
|
40435 | 756 |
FixedType major; |
757 |
FixedType minor; |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
758 |
public: |
40435 | 759 |
DEFINE_SIZE_STATIC (2 * sizeof(FixedType)); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
760 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
761 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
762 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
763 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
764 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
765 |
* Template subclasses of Offset that do the dereferencing. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
766 |
* Use: (base+offset) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
767 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
768 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
769 |
template <typename Type, typename OffsetType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
770 |
struct OffsetTo : Offset<OffsetType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
771 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
772 |
inline const Type& operator () (const void *base) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
773 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
774 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
775 |
if (unlikely (!offset)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
776 |
return StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
777 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
778 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
779 |
inline Type& serialize (hb_serialize_context_t *c, const void *base) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
780 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
781 |
Type *t = c->start_embed<Type> (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
782 |
this->set ((char *) t - (char *) base); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
783 |
return *t; |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
786 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base) const |
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 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
789 |
if (unlikely (!c->check_struct (this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
790 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
791 |
if (unlikely (!offset)) return_trace (true); |
43232 | 792 |
if (unlikely (!c->check_range (base, offset))) return_trace (false); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
793 |
const Type &obj = StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
794 |
return_trace (likely (obj.sanitize (c)) || neuter (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
795 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
796 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
797 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base, T user_data) const |
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 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
800 |
if (unlikely (!c->check_struct (this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
801 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
802 |
if (unlikely (!offset)) return_trace (true); |
43232 | 803 |
if (unlikely (!c->check_range (base, offset))) return_trace (false); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
804 |
const Type &obj = StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
805 |
return_trace (likely (obj.sanitize (c, user_data)) || neuter (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
806 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
807 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
808 |
/* Set the offset to Null */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
809 |
inline bool neuter (hb_sanitize_context_t *c) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
810 |
return c->try_set (this, 0); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
811 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
812 |
DEFINE_SIZE_STATIC (sizeof(OffsetType)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
813 |
}; |
48274 | 814 |
template <typename Type> struct LOffsetTo : OffsetTo<Type, ULONG> {}; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
815 |
template <typename Base, typename OffsetType, typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
816 |
static inline const Type& operator + (const Base &base, const OffsetTo<Type, OffsetType> &offset) { return offset (base); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
817 |
template <typename Base, typename OffsetType, typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
818 |
static inline Type& operator + (Base &base, OffsetTo<Type, OffsetType> &offset) { return offset (base); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
819 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
820 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
821 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
822 |
* Array Types |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
825 |
/* An array with a number of elements. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
826 |
template <typename Type, typename LenType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
827 |
struct ArrayOf |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
828 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
829 |
const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const |
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 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
832 |
if (unlikely (start_offset > count)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
833 |
count = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
834 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
835 |
count -= start_offset; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
836 |
count = MIN (count, *pcount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
837 |
*pcount = count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
838 |
return array + start_offset; |
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 |
inline const Type& operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
842 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
843 |
if (unlikely (i >= len)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
844 |
return array[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
845 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
846 |
inline Type& operator [] (unsigned int i) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
847 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
848 |
return array[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
849 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
850 |
inline unsigned int get_size (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
851 |
{ return len.static_size + len * Type::static_size; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
852 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
853 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
854 |
unsigned int items_len) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
855 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
856 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
857 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
858 |
len.set (items_len); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
859 |
if (unlikely (!c->extend (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
860 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
861 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
862 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
863 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
864 |
Supplier<Type> &items, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
865 |
unsigned int items_len) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
866 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
867 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
868 |
if (unlikely (!serialize (c, items_len))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
869 |
for (unsigned int i = 0; i < items_len; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
870 |
array[i] = items[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
871 |
items.advance (items_len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
872 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
873 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
874 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
875 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
876 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
877 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
878 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
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 |
/* Note: for structs that do not reference other structs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
881 |
* we do not need to call their sanitize() as we already did |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
882 |
* a bound check on the aggregate array size. We just include |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
883 |
* a small unreachable expression to make sure the structs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
884 |
* pointed to do have a simple sanitize(), ie. they do not |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
885 |
* reference other structs via offsets. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
886 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
887 |
(void) (false && array[0].sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
888 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
889 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
890 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
891 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base) const |
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 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
894 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
895 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
896 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
897 |
if (unlikely (!array[i].sanitize (c, base))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
898 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
899 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
900 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
901 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
902 |
inline bool sanitize (hb_sanitize_context_t *c, const void *base, T user_data) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
903 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
904 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
905 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
906 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
907 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
908 |
if (unlikely (!array[i].sanitize (c, base, user_data))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
909 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
910 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
911 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
912 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
913 |
template <typename SearchType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
914 |
inline int lsearch (const SearchType &x) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
915 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
916 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
917 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
918 |
if (!this->array[i].cmp (x)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
919 |
return i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
920 |
return -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
921 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
922 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
923 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
924 |
inline bool sanitize_shallow (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
925 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
926 |
TRACE_SANITIZE (this); |
48274 | 927 |
return_trace (len.sanitize (c) && c->check_array (array, Type::static_size, len)); |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
930 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
931 |
LenType len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
932 |
Type array[VAR]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
933 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
934 |
DEFINE_SIZE_ARRAY (sizeof (LenType), array); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
935 |
}; |
48274 | 936 |
template <typename Type> struct LArrayOf : ArrayOf<Type, ULONG> {}; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
937 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
938 |
/* Array of Offset's */ |
43232 | 939 |
template <typename Type, typename OffsetType=USHORT> |
940 |
struct OffsetArrayOf : ArrayOf<OffsetTo<Type, OffsetType> > {}; |
|
34414
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 |
/* Array of offsets relative to the beginning of the array itself. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
943 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
944 |
struct OffsetListOf : OffsetArrayOf<Type> |
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 const Type& operator [] (unsigned int i) 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 |
if (unlikely (i >= this->len)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
949 |
return this+this->array[i]; |
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 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
953 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
954 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
955 |
return_trace (OffsetArrayOf<Type>::sanitize (c, this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
956 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
957 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
958 |
inline bool sanitize (hb_sanitize_context_t *c, T user_data) const |
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 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
961 |
return_trace (OffsetArrayOf<Type>::sanitize (c, this, user_data)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
962 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
963 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
964 |
|
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 |
/* An array starting at second element. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
967 |
template <typename Type, typename LenType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
968 |
struct HeadlessArrayOf |
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 |
inline const Type& operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
971 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
972 |
if (unlikely (i >= len || !i)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
973 |
return array[i-1]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
974 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
975 |
inline unsigned int get_size (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
976 |
{ return len.static_size + (len ? len - 1 : 0) * Type::static_size; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
977 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
978 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
979 |
Supplier<Type> &items, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
980 |
unsigned int items_len) |
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 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
983 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
984 |
len.set (items_len); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
985 |
if (unlikely (!items_len)) return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
986 |
if (unlikely (!c->extend (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
987 |
for (unsigned int i = 0; i < items_len - 1; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
988 |
array[i] = items[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
989 |
items.advance (items_len - 1); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
990 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
991 |
} |
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 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
994 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
995 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
996 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
997 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
998 |
/* Note: for structs that do not reference other structs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
999 |
* we do not need to call their sanitize() as we already did |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1000 |
* a bound check on the aggregate array size. We just include |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1001 |
* a small unreachable expression to make sure the structs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1002 |
* pointed to do have a simple sanitize(), ie. they do not |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1003 |
* reference other structs via offsets. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1004 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1005 |
(void) (false && array[0].sanitize (c)); |
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 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1008 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1009 |
|
48274 | 1010 |
private: |
1011 |
inline bool sanitize_shallow (hb_sanitize_context_t *c) const |
|
1012 |
{ |
|
1013 |
TRACE_SANITIZE (this); |
|
1014 |
return_trace (len.sanitize (c) && |
|
1015 |
(!len || c->check_array (array, Type::static_size, len - 1))); |
|
1016 |
} |
|
1017 |
||
1018 |
public: |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1019 |
LenType len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1020 |
Type array[VAR]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1021 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1022 |
DEFINE_SIZE_ARRAY (sizeof (LenType), array); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1023 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1024 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1025 |
|
48274 | 1026 |
/* |
1027 |
* An array with sorted elements. Supports binary searching. |
|
1028 |
*/ |
|
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1029 |
template <typename Type, typename LenType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1030 |
struct SortedArrayOf : ArrayOf<Type, LenType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1031 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1032 |
template <typename SearchType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1033 |
inline int bsearch (const SearchType &x) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1034 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1035 |
/* Hand-coded bsearch here since this is in the hot inner loop. */ |
48274 | 1036 |
const Type *array = this->array; |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1037 |
int min = 0, max = (int) this->len - 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1038 |
while (min <= max) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1039 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1040 |
int mid = (min + max) / 2; |
48274 | 1041 |
int c = array[mid].cmp (x); |
34414
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1042 |
if (c < 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1043 |
max = mid - 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1044 |
else if (c > 0) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1045 |
min = mid + 1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1046 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1047 |
return mid; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1048 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1049 |
return -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1050 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1051 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1052 |
|
48274 | 1053 |
/* |
1054 |
* Binary-search arrays |
|
1055 |
*/ |
|
1056 |
||
1057 |
struct BinSearchHeader |
|
1058 |
{ |
|
1059 |
inline operator uint32_t (void) const { return len; } |
|
1060 |
||
1061 |
inline bool sanitize (hb_sanitize_context_t *c) const |
|
1062 |
{ |
|
1063 |
TRACE_SANITIZE (this); |
|
1064 |
return_trace (c->check_struct (this)); |
|
1065 |
} |
|
1066 |
||
1067 |
protected: |
|
1068 |
USHORT len; |
|
1069 |
USHORT searchRangeZ; |
|
1070 |
USHORT entrySelectorZ; |
|
1071 |
USHORT rangeShiftZ; |
|
1072 |
||
1073 |
public: |
|
1074 |
DEFINE_SIZE_STATIC (8); |
|
1075 |
}; |
|
1076 |
||
1077 |
template <typename Type> |
|
1078 |
struct BinSearchArrayOf : SortedArrayOf<Type, BinSearchHeader> {}; |
|
1079 |
||
1080 |
||
1081 |
/* Lazy struct and blob loaders. */ |
|
1082 |
||
1083 |
/* Logic is shared between hb_lazy_loader_t and hb_lazy_table_loader_t */ |
|
1084 |
template <typename T> |
|
1085 |
struct hb_lazy_loader_t |
|
1086 |
{ |
|
1087 |
inline void init (hb_face_t *face_) |
|
1088 |
{ |
|
1089 |
face = face_; |
|
1090 |
instance = nullptr; |
|
1091 |
} |
|
1092 |
||
1093 |
inline void fini (void) |
|
1094 |
{ |
|
1095 |
if (instance && instance != &OT::Null(T)) |
|
1096 |
{ |
|
1097 |
instance->fini(); |
|
1098 |
free (instance); |
|
1099 |
} |
|
1100 |
} |
|
1101 |
||
1102 |
inline const T* get (void) const |
|
1103 |
{ |
|
1104 |
retry: |
|
1105 |
T *p = (T *) hb_atomic_ptr_get (&instance); |
|
1106 |
if (unlikely (!p)) |
|
1107 |
{ |
|
1108 |
p = (T *) calloc (1, sizeof (T)); |
|
1109 |
if (unlikely (!p)) |
|
1110 |
p = const_cast<T *> (&OT::Null(T)); |
|
1111 |
else |
|
1112 |
p->init (face); |
|
1113 |
if (unlikely (!hb_atomic_ptr_cmpexch (const_cast<T **>(&instance), nullptr, p))) |
|
1114 |
{ |
|
1115 |
if (p != &OT::Null(T)) |
|
1116 |
p->fini (); |
|
1117 |
goto retry; |
|
1118 |
} |
|
1119 |
} |
|
1120 |
return p; |
|
1121 |
} |
|
1122 |
||
1123 |
inline const T* operator-> (void) const |
|
1124 |
{ |
|
1125 |
return get (); |
|
1126 |
} |
|
1127 |
||
1128 |
private: |
|
1129 |
hb_face_t *face; |
|
1130 |
T *instance; |
|
1131 |
}; |
|
1132 |
||
1133 |
/* Logic is shared between hb_lazy_loader_t and hb_lazy_table_loader_t */ |
|
1134 |
template <typename T> |
|
1135 |
struct hb_lazy_table_loader_t |
|
1136 |
{ |
|
1137 |
inline void init (hb_face_t *face_) |
|
1138 |
{ |
|
1139 |
face = face_; |
|
1140 |
instance = nullptr; |
|
1141 |
blob = nullptr; |
|
1142 |
} |
|
1143 |
||
1144 |
inline void fini (void) |
|
1145 |
{ |
|
1146 |
hb_blob_destroy (blob); |
|
1147 |
} |
|
1148 |
||
1149 |
inline const T* get (void) const |
|
1150 |
{ |
|
1151 |
retry: |
|
1152 |
T *p = (T *) hb_atomic_ptr_get (&instance); |
|
1153 |
if (unlikely (!p)) |
|
1154 |
{ |
|
1155 |
hb_blob_t *blob_ = OT::Sanitizer<T>::sanitize (face->reference_table (T::tableTag)); |
|
1156 |
p = const_cast<T *>(OT::Sanitizer<T>::lock_instance (blob_)); |
|
1157 |
if (!hb_atomic_ptr_cmpexch (const_cast<T **>(&instance), nullptr, p)) |
|
1158 |
{ |
|
1159 |
hb_blob_destroy (blob_); |
|
1160 |
goto retry; |
|
1161 |
} |
|
1162 |
blob = blob_; |
|
1163 |
} |
|
1164 |
return p; |
|
1165 |
} |
|
1166 |
||
1167 |
inline const T* operator-> (void) const |
|
1168 |
{ |
|
1169 |
return get(); |
|
1170 |
} |
|
1171 |
||
1172 |
private: |
|
1173 |
hb_face_t *face; |
|
1174 |
T *instance; |
|
1175 |
mutable hb_blob_t *blob; |
|
1176 |
}; |
|
1177 |
||
34414
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 |
} /* namespace OT */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1180 |
|
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 |
#endif /* HB_OPEN_TYPE_PRIVATE_HH */ |