author | prr |
Mon, 23 Nov 2015 09:58:44 -0800 | |
changeset 34414 | e496a8d8fc8a |
child 40435 | 553eb1a50733 |
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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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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ASSERT_STATIC (_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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/* Size signifying variable-sized array */ |
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#define VAR 1 |
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#define DEFINE_SIZE_UNION(size, _member) \ |
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DEFINE_INSTANCE_ASSERTION (this->u._member.static_size == (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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131 |
*/ |
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132 |
|
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133 |
/* Global nul-content Null pool. Enlarge as necessary. */ |
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134 |
/* TODO This really should be a extern HB_INTERNAL and defined somewhere... */ |
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static const void *_NullPool[(256+8) / sizeof (void *)]; |
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136 |
|
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137 |
/* Generic nul-content Null objects. */ |
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138 |
template <typename Type> |
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static inline const Type& Null (void) { |
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ASSERT_STATIC (sizeof (Type) <= sizeof (_NullPool)); |
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return *CastP<Type> (_NullPool); |
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} |
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143 |
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144 |
/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */ |
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145 |
#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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147 |
template <> \ |
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148 |
/*static*/ inline const Type& Null<Type> (void) { \ |
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149 |
return *CastP<Type> (_Null##Type); \ |
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150 |
} /* The following line really exists such that we end in a place needing semicolon */ \ |
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ASSERT_STATIC (Type::min_size + 1 <= sizeof (_Null##Type)) |
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152 |
|
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153 |
/* Accessor macro. */ |
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#define Null(Type) Null<Type>() |
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155 |
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156 |
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157 |
/* |
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158 |
* Dispatch |
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159 |
*/ |
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160 |
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161 |
template <typename Context, typename Return, unsigned int MaxDebugDepth> |
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162 |
struct hb_dispatch_context_t |
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163 |
{ |
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static const unsigned int max_debug_depth = MaxDebugDepth; |
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typedef Return return_t; |
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166 |
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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169 |
}; |
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170 |
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171 |
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172 |
/* |
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173 |
* Sanitize |
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174 |
*/ |
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175 |
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176 |
#ifndef HB_DEBUG_SANITIZE |
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#define HB_DEBUG_SANITIZE (HB_DEBUG+0) |
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178 |
#endif |
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179 |
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180 |
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181 |
#define TRACE_SANITIZE(this) \ |
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182 |
hb_auto_trace_t<HB_DEBUG_SANITIZE, bool> trace \ |
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183 |
(&c->debug_depth, c->get_name (), this, HB_FUNC, \ |
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184 |
""); |
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185 |
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186 |
/* This limits sanitizing time on really broken fonts. */ |
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187 |
#ifndef HB_SANITIZE_MAX_EDITS |
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188 |
#define HB_SANITIZE_MAX_EDITS 100 |
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189 |
#endif |
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190 |
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191 |
struct hb_sanitize_context_t : |
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192 |
hb_dispatch_context_t<hb_sanitize_context_t, bool, HB_DEBUG_SANITIZE> |
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193 |
{ |
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194 |
inline hb_sanitize_context_t (void) : |
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195 |
debug_depth (0), |
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start (NULL), end (NULL), |
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writable (false), edit_count (0), |
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198 |
blob (NULL) {} |
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199 |
|
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200 |
inline const char *get_name (void) { return "SANITIZE"; } |
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201 |
template <typename T, typename F> |
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202 |
inline bool may_dispatch (const T *obj, const F *format) |
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203 |
{ return format->sanitize (this); } |
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204 |
template <typename T> |
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205 |
inline return_t dispatch (const T &obj) { return obj.sanitize (this); } |
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206 |
static return_t default_return_value (void) { return true; } |
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207 |
static return_t no_dispatch_return_value (void) { return false; } |
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208 |
bool stop_sublookup_iteration (const return_t r) const { return !r; } |
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209 |
|
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210 |
inline void init (hb_blob_t *b) |
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211 |
{ |
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212 |
this->blob = hb_blob_reference (b); |
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213 |
this->writable = false; |
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214 |
} |
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215 |
|
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216 |
inline void start_processing (void) |
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217 |
{ |
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218 |
this->start = hb_blob_get_data (this->blob, NULL); |
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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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222 |
this->debug_depth = 0; |
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223 |
|
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224 |
DEBUG_MSG_LEVEL (SANITIZE, start, 0, +1, |
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225 |
"start [%p..%p] (%lu bytes)", |
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226 |
this->start, this->end, |
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(unsigned long) (this->end - this->start)); |
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228 |
} |
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229 |
|
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inline void end_processing (void) |
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231 |
{ |
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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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235 |
|
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236 |
hb_blob_destroy (this->blob); |
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this->blob = NULL; |
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238 |
this->start = this->end = NULL; |
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239 |
} |
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240 |
|
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241 |
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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|
245 |
|
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|
246 |
DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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parents:
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|
247 |
"check_range [%p..%p] (%d bytes) in [%p..%p] -> %s", |
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|
248 |
p, p + len, len, |
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|
249 |
this->start, this->end, |
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parents:
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|
250 |
ok ? "OK" : "OUT-OF-RANGE"); |
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changeset
|
251 |
|
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diff
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|
252 |
return likely (ok); |
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diff
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|
253 |
} |
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|
254 |
|
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|
255 |
inline bool check_array (const void *base, unsigned int record_size, unsigned int len) const |
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|
256 |
{ |
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|
257 |
const char *p = (const char *) base; |
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parents:
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|
258 |
bool overflows = _hb_unsigned_int_mul_overflows (len, record_size); |
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|
259 |
unsigned int array_size = record_size * len; |
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|
260 |
bool ok = !overflows && this->check_range (base, array_size); |
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parents:
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changeset
|
261 |
|
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parents:
diff
changeset
|
262 |
DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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parents:
diff
changeset
|
263 |
"check_array [%p..%p] (%d*%d=%d bytes) in [%p..%p] -> %s", |
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parents:
diff
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|
264 |
p, p + (record_size * len), record_size, len, (unsigned int) array_size, |
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parents:
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|
265 |
this->start, this->end, |
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parents:
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|
266 |
overflows ? "OVERFLOWS" : ok ? "OK" : "OUT-OF-RANGE"); |
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changeset
|
267 |
|
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|
268 |
return likely (ok); |
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changeset
|
269 |
} |
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changeset
|
270 |
|
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|
271 |
template <typename Type> |
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|
272 |
inline bool check_struct (const Type *obj) const |
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|
273 |
{ |
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|
274 |
return likely (this->check_range (obj, obj->min_size)); |
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|
275 |
} |
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parents:
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changeset
|
276 |
|
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parents:
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changeset
|
277 |
inline bool may_edit (const void *base HB_UNUSED, unsigned int len HB_UNUSED) |
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|
278 |
{ |
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|
279 |
if (this->edit_count >= HB_SANITIZE_MAX_EDITS) |
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|
280 |
return false; |
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parents:
diff
changeset
|
281 |
|
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parents:
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|
282 |
const char *p = (const char *) base; |
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parents:
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|
283 |
this->edit_count++; |
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parents:
diff
changeset
|
284 |
|
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parents:
diff
changeset
|
285 |
DEBUG_MSG_LEVEL (SANITIZE, p, this->debug_depth+1, 0, |
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parents:
diff
changeset
|
286 |
"may_edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s", |
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parents:
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|
287 |
this->edit_count, |
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parents:
diff
changeset
|
288 |
p, p + len, len, |
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parents:
diff
changeset
|
289 |
this->start, this->end, |
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parents:
diff
changeset
|
290 |
this->writable ? "GRANTED" : "DENIED"); |
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prr
parents:
diff
changeset
|
291 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
292 |
return this->writable; |
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prr
parents:
diff
changeset
|
293 |
} |
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parents:
diff
changeset
|
294 |
|
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parents:
diff
changeset
|
295 |
template <typename Type, typename ValueType> |
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parents:
diff
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|
296 |
inline bool try_set (const Type *obj, const ValueType &v) { |
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parents:
diff
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|
297 |
if (this->may_edit (obj, obj->static_size)) { |
e496a8d8fc8a
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parents:
diff
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|
298 |
const_cast<Type *> (obj)->set (v); |
e496a8d8fc8a
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parents:
diff
changeset
|
299 |
return true; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
300 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
301 |
return false; |
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 |
mutable unsigned int debug_depth; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
305 |
const char *start, *end; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
306 |
bool writable; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
307 |
unsigned int edit_count; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
308 |
hb_blob_t *blob; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
309 |
}; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
310 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
311 |
|
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prr
parents:
diff
changeset
|
312 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
313 |
/* Template to sanitize an object. */ |
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prr
parents:
diff
changeset
|
314 |
template <typename Type> |
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prr
parents:
diff
changeset
|
315 |
struct Sanitizer |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
316 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
317 |
static hb_blob_t *sanitize (hb_blob_t *blob) { |
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prr
parents:
diff
changeset
|
318 |
hb_sanitize_context_t c[1]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
319 |
bool sane; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
320 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
321 |
/* TODO is_sane() stuff */ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
322 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
323 |
c->init (blob); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
324 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
325 |
retry: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
326 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "start"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
327 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
328 |
c->start_processing (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
329 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
330 |
if (unlikely (!c->start)) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
331 |
c->end_processing (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
332 |
return blob; |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
335 |
Type *t = CastP<Type> (const_cast<char *> (c->start)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
336 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
337 |
sane = t->sanitize (c); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
338 |
if (sane) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
339 |
if (c->edit_count) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
340 |
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
|
341 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
342 |
/* sanitize again to ensure no toe-stepping */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
343 |
c->edit_count = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
344 |
sane = t->sanitize (c); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
345 |
if (c->edit_count) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
346 |
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
|
347 |
sane = false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
348 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
349 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
350 |
} else { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
351 |
unsigned int edit_count = c->edit_count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
352 |
if (edit_count && !c->writable) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
353 |
c->start = hb_blob_get_data_writable (blob, NULL); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
354 |
c->end = c->start + hb_blob_get_length (blob); |
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 |
if (c->start) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
357 |
c->writable = true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
358 |
/* ok, we made it writable by relocating. try again */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
359 |
DEBUG_MSG_FUNC (SANITIZE, c->start, "retry"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
360 |
goto retry; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
361 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
362 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
363 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
364 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
365 |
c->end_processing (); |
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 |
DEBUG_MSG_FUNC (SANITIZE, c->start, sane ? "PASSED" : "FAILED"); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
368 |
if (sane) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
369 |
return blob; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
370 |
else { |
e496a8d8fc8a
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changeset
|
371 |
hb_blob_destroy (blob); |
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parents:
diff
changeset
|
372 |
return hb_blob_get_empty (); |
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prr
parents:
diff
changeset
|
373 |
} |
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prr
parents:
diff
changeset
|
374 |
} |
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prr
parents:
diff
changeset
|
375 |
|
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parents:
diff
changeset
|
376 |
static const Type* lock_instance (hb_blob_t *blob) { |
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parents:
diff
changeset
|
377 |
hb_blob_make_immutable (blob); |
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parents:
diff
changeset
|
378 |
const char *base = hb_blob_get_data (blob, NULL); |
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parents:
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changeset
|
379 |
return unlikely (!base) ? &Null(Type) : CastP<Type> (base); |
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prr
parents:
diff
changeset
|
380 |
} |
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prr
parents:
diff
changeset
|
381 |
}; |
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prr
parents:
diff
changeset
|
382 |
|
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prr
parents:
diff
changeset
|
383 |
|
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prr
parents:
diff
changeset
|
384 |
|
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prr
parents:
diff
changeset
|
385 |
/* |
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prr
parents:
diff
changeset
|
386 |
* Serialize |
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prr
parents:
diff
changeset
|
387 |
*/ |
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prr
parents:
diff
changeset
|
388 |
|
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prr
parents:
diff
changeset
|
389 |
#ifndef HB_DEBUG_SERIALIZE |
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parents:
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changeset
|
390 |
#define HB_DEBUG_SERIALIZE (HB_DEBUG+0) |
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prr
parents:
diff
changeset
|
391 |
#endif |
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prr
parents:
diff
changeset
|
392 |
|
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prr
parents:
diff
changeset
|
393 |
|
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prr
parents:
diff
changeset
|
394 |
#define TRACE_SERIALIZE(this) \ |
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prr
parents:
diff
changeset
|
395 |
hb_auto_trace_t<HB_DEBUG_SERIALIZE, bool> trace \ |
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prr
parents:
diff
changeset
|
396 |
(&c->debug_depth, "SERIALIZE", c, HB_FUNC, \ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
397 |
""); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
398 |
|
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prr
parents:
diff
changeset
|
399 |
|
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prr
parents:
diff
changeset
|
400 |
struct hb_serialize_context_t |
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prr
parents:
diff
changeset
|
401 |
{ |
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prr
parents:
diff
changeset
|
402 |
inline hb_serialize_context_t (void *start, unsigned int size) |
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prr
parents:
diff
changeset
|
403 |
{ |
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prr
parents:
diff
changeset
|
404 |
this->start = (char *) start; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
405 |
this->end = this->start + size; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
406 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
407 |
this->ran_out_of_room = false; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
408 |
this->head = this->start; |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
409 |
this->debug_depth = 0; |
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prr
parents:
diff
changeset
|
410 |
} |
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prr
parents:
diff
changeset
|
411 |
|
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prr
parents:
diff
changeset
|
412 |
template <typename Type> |
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prr
parents:
diff
changeset
|
413 |
inline Type *start_serialize (void) |
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prr
parents:
diff
changeset
|
414 |
{ |
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prr
parents:
diff
changeset
|
415 |
DEBUG_MSG_LEVEL (SERIALIZE, this->start, 0, +1, |
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prr
parents:
diff
changeset
|
416 |
"start [%p..%p] (%lu bytes)", |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
417 |
this->start, this->end, |
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prr
parents:
diff
changeset
|
418 |
(unsigned long) (this->end - this->start)); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
419 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
420 |
return start_embed<Type> (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
421 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
422 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
423 |
inline void end_serialize (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
424 |
{ |
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prr
parents:
diff
changeset
|
425 |
DEBUG_MSG_LEVEL (SERIALIZE, this->start, 0, -1, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
426 |
"end [%p..%p] serialized %d bytes; %s", |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
427 |
this->start, this->end, |
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prr
parents:
diff
changeset
|
428 |
(int) (this->head - this->start), |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
429 |
this->ran_out_of_room ? "RAN OUT OF ROOM" : "did not ran out of room"); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
430 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
431 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
432 |
|
e496a8d8fc8a
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prr
parents:
diff
changeset
|
433 |
template <typename Type> |
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prr
parents:
diff
changeset
|
434 |
inline Type *copy (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
435 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
436 |
assert (!this->ran_out_of_room); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
437 |
unsigned int len = this->head - this->start; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
438 |
void *p = malloc (len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
439 |
if (p) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
440 |
memcpy (p, this->start, len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
441 |
return reinterpret_cast<Type *> (p); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
442 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
443 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
444 |
template <typename Type> |
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prr
parents:
diff
changeset
|
445 |
inline Type *allocate_size (unsigned int size) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
446 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
447 |
if (unlikely (this->ran_out_of_room || this->end - this->head < ptrdiff_t (size))) { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
448 |
this->ran_out_of_room = true; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
449 |
return NULL; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
450 |
} |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
451 |
memset (this->head, 0, size); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
452 |
char *ret = this->head; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
453 |
this->head += size; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
454 |
return reinterpret_cast<Type *> (ret); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
455 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
456 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
457 |
template <typename Type> |
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prr
parents:
diff
changeset
|
458 |
inline Type *allocate_min (void) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
459 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
460 |
return this->allocate_size<Type> (Type::min_size); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
461 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
462 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
463 |
template <typename Type> |
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prr
parents:
diff
changeset
|
464 |
inline Type *start_embed (void) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
465 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
466 |
Type *ret = reinterpret_cast<Type *> (this->head); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
467 |
return ret; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
468 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
469 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
470 |
template <typename Type> |
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prr
parents:
diff
changeset
|
471 |
inline Type *embed (const Type &obj) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
472 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
473 |
unsigned int size = obj.get_size (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
474 |
Type *ret = this->allocate_size<Type> (size); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
475 |
if (unlikely (!ret)) return NULL; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
476 |
memcpy (ret, obj, size); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
477 |
return ret; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
478 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
479 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
480 |
template <typename Type> |
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prr
parents:
diff
changeset
|
481 |
inline Type *extend_min (Type &obj) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
482 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
483 |
unsigned int size = obj.min_size; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
484 |
assert (this->start <= (char *) &obj && (char *) &obj <= this->head && (char *) &obj + size >= this->head); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
485 |
if (unlikely (!this->allocate_size<Type> (((char *) &obj) + size - this->head))) return NULL; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
486 |
return reinterpret_cast<Type *> (&obj); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
487 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
488 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
489 |
template <typename Type> |
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prr
parents:
diff
changeset
|
490 |
inline Type *extend (Type &obj) |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
491 |
{ |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
492 |
unsigned int size = obj.get_size (); |
e496a8d8fc8a
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prr
parents:
diff
changeset
|
493 |
assert (this->start < (char *) &obj && (char *) &obj <= this->head && (char *) &obj + size >= this->head); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
494 |
if (unlikely (!this->allocate_size<Type> (((char *) &obj) + size - this->head))) return NULL; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
495 |
return reinterpret_cast<Type *> (&obj); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
496 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
497 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
498 |
inline void truncate (void *head) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
499 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
500 |
assert (this->start < head && head <= this->head); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
501 |
this->head = (char *) head; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
502 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
503 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
504 |
unsigned int debug_depth; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
505 |
char *start, *end, *head; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
506 |
bool ran_out_of_room; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
507 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
508 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
509 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
510 |
struct Supplier |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
511 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
512 |
inline Supplier (const Type *array, unsigned int len_) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
513 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
514 |
head = array; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
515 |
len = len_; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
516 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
517 |
inline const Type operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
518 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
519 |
if (unlikely (i >= len)) return Type (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
520 |
return head[i]; |
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 |
inline void advance (unsigned int count) |
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 |
if (unlikely (count > len)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
526 |
count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
527 |
len -= count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
528 |
head += count; |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
531 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
532 |
inline Supplier (const Supplier<Type> &); /* Disallow copy */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
533 |
inline Supplier<Type>& operator= (const Supplier<Type> &); /* Disallow copy */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
534 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
535 |
unsigned int len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
536 |
const Type *head; |
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 |
|
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
541 |
|
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 |
* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
544 |
* The OpenType Font File: Data Types |
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 |
|
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 |
/* "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
|
549 |
* All OpenType fonts use Motorola-style byte ordering (Big Endian):" */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
550 |
|
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 |
* Int types |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
555 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
556 |
template <typename Type, int Bytes> struct BEInt; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
557 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
558 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
559 |
struct BEInt<Type, 1> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
560 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
561 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
562 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
563 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
564 |
v = V; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
565 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
566 |
inline operator Type (void) const |
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 |
return v; |
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 |
private: uint8_t v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
571 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
572 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
573 |
struct BEInt<Type, 2> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
574 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
575 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
576 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
577 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
578 |
v[0] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
579 |
v[1] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
580 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
581 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
582 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
583 |
return (v[0] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
584 |
+ (v[1] ); |
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[2]; |
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, 3> |
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 >> 16) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
595 |
v[1] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
596 |
v[2] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
597 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
598 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
599 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
600 |
return (v[0] << 16) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
601 |
+ (v[1] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
602 |
+ (v[2] ); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
603 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
604 |
private: uint8_t 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 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
607 |
struct BEInt<Type, 4> |
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 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
610 |
inline void set (Type V) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
611 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
612 |
v[0] = (V >> 24) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
613 |
v[1] = (V >> 16) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
614 |
v[2] = (V >> 8) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
615 |
v[3] = (V ) & 0xFF; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
616 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
617 |
inline operator Type (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
618 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
619 |
return (v[0] << 24) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
620 |
+ (v[1] << 16) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
621 |
+ (v[2] << 8) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
622 |
+ (v[3] ); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
623 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
624 |
private: uint8_t v[4]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
625 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
626 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
627 |
/* Integer types in big-endian order and no alignment requirement */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
628 |
template <typename Type, unsigned int Size> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
629 |
struct IntType |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
630 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
631 |
inline void set (Type i) { v.set (i); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
632 |
inline operator Type(void) const { return v; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
633 |
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
|
634 |
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
|
635 |
static inline int cmp (const IntType<Type,Size> *a, const IntType<Type,Size> *b) { return b->cmp (*a); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
636 |
inline int cmp (Type a) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
637 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
638 |
Type b = v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
639 |
if (sizeof (Type) < sizeof (int)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
640 |
return (int) a - (int) b; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
641 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
642 |
return a < b ? -1 : a == b ? 0 : +1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
643 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
644 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
645 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
646 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
647 |
return_trace (likely (c->check_struct (this))); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
648 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
649 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
650 |
BEInt<Type, Size> v; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
651 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
652 |
DEFINE_SIZE_STATIC (Size); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
653 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
654 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
655 |
typedef IntType<uint8_t , 1> BYTE; /* 8-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
656 |
typedef IntType<uint16_t, 2> USHORT; /* 16-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
657 |
typedef IntType<int16_t, 2> SHORT; /* 16-bit signed integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
658 |
typedef IntType<uint32_t, 4> ULONG; /* 32-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
659 |
typedef IntType<int32_t, 4> LONG; /* 32-bit signed integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
660 |
typedef IntType<uint32_t, 3> UINT24; /* 24-bit unsigned integer. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
661 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
662 |
/* 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
|
663 |
typedef SHORT FWORD; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
664 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
665 |
/* 16-bit unsigned integer (USHORT) that describes a quantity in FUnits. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
666 |
typedef USHORT UFWORD; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
667 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
668 |
/* 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
|
669 |
* 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
|
670 |
struct LONGDATETIME |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
671 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
672 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
673 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
674 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
675 |
return_trace (likely (c->check_struct (this))); |
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 |
protected: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
678 |
LONG major; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
679 |
ULONG minor; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
680 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
681 |
DEFINE_SIZE_STATIC (8); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
682 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
683 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
684 |
/* 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
|
685 |
* system, feature, or baseline */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
686 |
struct Tag : ULONG |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
687 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
688 |
/* 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
|
689 |
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
|
690 |
inline operator char* (void) { return reinterpret_cast<char *> (&this->v); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
691 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
692 |
DEFINE_SIZE_STATIC (4); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
693 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
694 |
DEFINE_NULL_DATA (Tag, " "); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
695 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
696 |
/* Glyph index number, same as uint16 (length = 16 bits) */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
697 |
struct GlyphID : USHORT { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
698 |
static inline int cmp (const GlyphID *a, const GlyphID *b) { return b->USHORT::cmp (*a); } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
699 |
inline int cmp (hb_codepoint_t a) const { return (int) a - (int) *this; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
700 |
}; |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
745 |
struct FixedVersion |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
746 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
747 |
inline uint32_t to_int (void) const { return (major << 16) + minor; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
748 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
749 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
750 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
751 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
752 |
return_trace (c->check_struct (this)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
753 |
} |
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 |
USHORT major; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
756 |
USHORT minor; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
757 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
758 |
DEFINE_SIZE_STATIC (4); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
759 |
}; |
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 |
* Template subclasses of Offset that do the dereferencing. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
765 |
* Use: (base+offset) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
766 |
*/ |
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 |
template <typename Type, typename OffsetType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
769 |
struct OffsetTo : Offset<OffsetType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
770 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
771 |
inline const Type& operator () (const void *base) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
772 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
773 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
774 |
if (unlikely (!offset)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
775 |
return StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
776 |
} |
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 |
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
|
779 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
780 |
Type *t = c->start_embed<Type> (); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
781 |
this->set ((char *) t - (char *) base); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
782 |
return *t; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
783 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
784 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
785 |
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
|
786 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
787 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
788 |
if (unlikely (!c->check_struct (this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
789 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
790 |
if (unlikely (!offset)) return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
791 |
const Type &obj = StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
792 |
return_trace (likely (obj.sanitize (c)) || neuter (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
793 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
794 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
795 |
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
|
796 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
797 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
798 |
if (unlikely (!c->check_struct (this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
799 |
unsigned int offset = *this; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
800 |
if (unlikely (!offset)) return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
801 |
const Type &obj = StructAtOffset<Type> (base, offset); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
802 |
return_trace (likely (obj.sanitize (c, user_data)) || neuter (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
803 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
804 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
805 |
/* Set the offset to Null */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
806 |
inline bool neuter (hb_sanitize_context_t *c) const { |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
807 |
return c->try_set (this, 0); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
808 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
809 |
DEFINE_SIZE_STATIC (sizeof(OffsetType)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
810 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
811 |
template <typename Base, typename OffsetType, typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
812 |
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
|
813 |
template <typename Base, typename OffsetType, typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
814 |
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
|
815 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
816 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
817 |
/* |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
818 |
* Array Types |
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 |
/* An array with a number of elements. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
822 |
template <typename Type, typename LenType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
823 |
struct ArrayOf |
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 |
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
|
826 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
827 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
828 |
if (unlikely (start_offset > count)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
829 |
count = 0; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
830 |
else |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
831 |
count -= start_offset; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
832 |
count = MIN (count, *pcount); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
833 |
*pcount = count; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
834 |
return array + start_offset; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
835 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
836 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
837 |
inline const Type& operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
838 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
839 |
if (unlikely (i >= len)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
840 |
return array[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
841 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
842 |
inline Type& operator [] (unsigned int i) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
843 |
{ |
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 unsigned int get_size (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
847 |
{ return len.static_size + len * Type::static_size; } |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
848 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
849 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
850 |
unsigned int items_len) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
851 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
852 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
853 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
854 |
len.set (items_len); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
855 |
if (unlikely (!c->extend (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
856 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
857 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
858 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
859 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
860 |
Supplier<Type> &items, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
861 |
unsigned int items_len) |
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 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
864 |
if (unlikely (!serialize (c, items_len))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
865 |
for (unsigned int i = 0; i < items_len; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
866 |
array[i] = items[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
867 |
items.advance (items_len); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
868 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
869 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
870 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
871 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
872 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
873 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
874 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
875 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
876 |
/* Note: for structs that do not reference other structs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
877 |
* 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
|
878 |
* 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
|
879 |
* a small unreachable expression to make sure the structs |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
880 |
* 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
|
881 |
* reference other structs via offsets. |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
882 |
*/ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
883 |
(void) (false && array[0].sanitize (c)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
884 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
885 |
return_trace (true); |
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 |
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
|
888 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
889 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
890 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
891 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
892 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
893 |
if (unlikely (!array[i].sanitize (c, base))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
894 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
895 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
896 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
897 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
898 |
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
|
899 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
900 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
901 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
902 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
903 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
904 |
if (unlikely (!array[i].sanitize (c, base, user_data))) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
905 |
return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
906 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
907 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
908 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
909 |
template <typename SearchType> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
910 |
inline int lsearch (const SearchType &x) const |
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 |
unsigned int count = len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
913 |
for (unsigned int i = 0; i < count; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
914 |
if (!this->array[i].cmp (x)) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
915 |
return i; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
916 |
return -1; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
917 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
918 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
919 |
private: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
920 |
inline bool sanitize_shallow (hb_sanitize_context_t *c) const |
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 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
923 |
return_trace (c->check_struct (this) && c->check_array (array, Type::static_size, len)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
924 |
} |
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 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
927 |
LenType len; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
928 |
Type array[VAR]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
929 |
public: |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
930 |
DEFINE_SIZE_ARRAY (sizeof (LenType), array); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
931 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
932 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
933 |
/* Array of Offset's */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
934 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
935 |
struct OffsetArrayOf : ArrayOf<OffsetTo<Type> > {}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
936 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
937 |
/* 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
|
938 |
template <typename Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
939 |
struct OffsetListOf : OffsetArrayOf<Type> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
940 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
941 |
inline const Type& operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
942 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
943 |
if (unlikely (i >= this->len)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
944 |
return this+this->array[i]; |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
947 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
948 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
949 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
950 |
return_trace (OffsetArrayOf<Type>::sanitize (c, this)); |
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 |
template <typename T> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
953 |
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
|
954 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
955 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
956 |
return_trace (OffsetArrayOf<Type>::sanitize (c, this, user_data)); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
957 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
958 |
}; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
959 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
960 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
961 |
/* An array starting at second element. */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
962 |
template <typename Type, typename LenType=USHORT> |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
963 |
struct HeadlessArrayOf |
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 |
inline const Type& operator [] (unsigned int i) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
966 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
967 |
if (unlikely (i >= len || !i)) return Null(Type); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
968 |
return array[i-1]; |
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 unsigned int get_size (void) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
971 |
{ 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
|
972 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
973 |
inline bool serialize (hb_serialize_context_t *c, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
974 |
Supplier<Type> &items, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
975 |
unsigned int items_len) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
976 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
977 |
TRACE_SERIALIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
978 |
if (unlikely (!c->extend_min (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
979 |
len.set (items_len); /* TODO(serialize) Overflow? */ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
980 |
if (unlikely (!items_len)) return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
981 |
if (unlikely (!c->extend (*this))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
982 |
for (unsigned int i = 0; i < items_len - 1; i++) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
983 |
array[i] = items[i]; |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
984 |
items.advance (items_len - 1); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
985 |
return_trace (true); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
986 |
} |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
987 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
988 |
inline bool sanitize_shallow (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
989 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
990 |
return c->check_struct (this) |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
991 |
&& c->check_array (this, Type::static_size, len); |
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 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
994 |
inline bool sanitize (hb_sanitize_context_t *c) const |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
995 |
{ |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
996 |
TRACE_SANITIZE (this); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
997 |
if (unlikely (!sanitize_shallow (c))) return_trace (false); |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
998 |
|
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
999 |
/* Note: for structs that do not reference other structs, |
e496a8d8fc8a
8143177: Integrate harfbuzz opentype layout engine per JEP 258
prr
parents:
diff
changeset
|
1000 |
* 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
|
1001 |
* a bound check on the aggregate array size. We just include |
e496a8d8fc8a
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1002 |
* a small unreachable expression to make sure the structs |
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1003 |
* pointed to do have a simple sanitize(), ie. they do not |
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1004 |
* reference other structs via offsets. |
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1005 |
*/ |
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1006 |
(void) (false && array[0].sanitize (c)); |
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1007 |
|
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1008 |
return_trace (true); |
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1009 |
} |
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1010 |
|
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1011 |
LenType len; |
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1012 |
Type array[VAR]; |
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1013 |
public: |
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1014 |
DEFINE_SIZE_ARRAY (sizeof (LenType), array); |
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1015 |
}; |
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|
1016 |
|
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1017 |
|
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1018 |
/* An array with sorted elements. Supports binary searching. */ |
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1019 |
template <typename Type, typename LenType=USHORT> |
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1020 |
struct SortedArrayOf : ArrayOf<Type, LenType> |
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1021 |
{ |
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1022 |
template <typename SearchType> |
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1023 |
inline int bsearch (const SearchType &x) const |
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1024 |
{ |
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1025 |
/* Hand-coded bsearch here since this is in the hot inner loop. */ |
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1026 |
int min = 0, max = (int) this->len - 1; |
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1027 |
while (min <= max) |
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1028 |
{ |
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1029 |
int mid = (min + max) / 2; |
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1030 |
int c = this->array[mid].cmp (x); |
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1031 |
if (c < 0) |
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1032 |
max = mid - 1; |
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1033 |
else if (c > 0) |
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1034 |
min = mid + 1; |
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|
1035 |
else |
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1036 |
return mid; |
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|
1037 |
} |
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1038 |
return -1; |
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|
1039 |
} |
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1040 |
}; |
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|
1041 |
|
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1042 |
|
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1043 |
} /* namespace OT */ |
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1044 |
|
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1045 |
|
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1046 |
#endif /* HB_OPEN_TYPE_PRIVATE_HH */ |