[HB] Shuffle code around
This commit is contained in:
Behdad Esfahbod
parent
b1e187fc63
commit
577c111649
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@ -51,6 +51,154 @@
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#define CAST(T,X,Ofs) (*(reinterpret_cast<T *>(CHARP(&(X)) + Ofs)))
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#define CAST(T,X,Ofs) (*(reinterpret_cast<T *>(CHARP(&(X)) + Ofs)))
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/*
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* Array types
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*/
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/* get_len() is a method returning the number of items in an array-like object */
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#define DEFINE_LEN(Type, array, num) \
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inline unsigned int get_len(void) const { return num; } \
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/* An array type is one that contains a variable number of objects
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* as its last item. An array object is extended with get_len()
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* methods, as well as overloaded [] operator. */
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#define DEFINE_ARRAY_TYPE(Type, array, num) \
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DEFINE_INDEX_OPERATOR(Type, array, num) \
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DEFINE_LEN(Type, array, num)
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#define DEFINE_INDEX_OPERATOR(Type, array, num) \
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inline const Type& operator[] (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= num)) return Null(Type); \
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return array[i]; \
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}
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/* An offset array type is like an array type, but it contains a table
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* of offsets to the objects, relative to the beginning of the current
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* object. */
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#define DEFINE_OFFSET_ARRAY_TYPE(Type, array, num) \
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DEFINE_OFFSET_INDEX_OPERATOR(Type, array, num) \
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DEFINE_LEN(Offset, array, num)
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#define DEFINE_OFFSET_INDEX_OPERATOR(Type, array, num) \
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inline const Type& operator[] (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= num)) return Null(Type); \
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if (HB_UNLIKELY (!array[i])) return Null(Type); \
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return *(const Type)((const char*)this + array[i]); \
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}
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#define DEFINE_ARRAY_INTERFACE(Type, name) \
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inline const Type& get_##name (unsigned int i) const { return (*this)[i]; } \
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inline unsigned int get_##name##_count (void) const { return this->get_len (); }
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#define DEFINE_INDEX_ARRAY_INTERFACE(name) \
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inline unsigned int get_##name##_index (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= get_len ())) return NO_INDEX; \
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return (*this)[i]; \
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} \
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inline unsigned int get_##name##_count (void) const { return get_len (); }
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/*
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* List types
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*/
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#define DEFINE_LIST_INTERFACE(Type, name) \
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inline const Type& get_##name (unsigned int i) const { return (this+name##List)[i]; } \
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inline unsigned int get_##name##_count (void) const { return (this+name##List).len; }
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/*
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* Tag types
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*/
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#define DEFINE_TAG_ARRAY_INTERFACE(Type, name) \
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DEFINE_ARRAY_INTERFACE (Type, name); \
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inline const Tag& get_##name##_tag (unsigned int i) const { return (*this)[i].tag; }
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#define DEFINE_TAG_LIST_INTERFACE(Type, name) \
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DEFINE_LIST_INTERFACE (Type, name); \
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inline const Tag& get_##name##_tag (unsigned int i) const { return (this+name##List).get_tag (i); }
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#define DEFINE_TAG_FIND_INTERFACE(Type, name) \
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inline bool find_##name##_index (hb_tag_t tag, unsigned int *index) const { \
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const Tag t = tag; \
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for (unsigned int i = 0; i < get_##name##_count (); i++) \
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{ \
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if (t == get_##name##_tag (i)) \
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{ \
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if (index) *index = i; \
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return true; \
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} \
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} \
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if (index) *index = NO_INDEX; \
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return false; \
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} \
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inline const Type& get_##name##_by_tag (hb_tag_t tag) const \
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{ \
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unsigned int i; \
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if (find_##name##_index (tag, &i)) \
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return get_##name (i); \
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else \
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return Null(Type); \
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}
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/*
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* Class features
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*/
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/* Null objects */
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/* Global nul-content Null pool. Enlarge as necessary. */
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static const char NullPool[16] = "";
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/* Generic template for nul-content sizeof-sized Null objects. */
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template <typename Type>
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struct Null
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{
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ASSERT_STATIC (sizeof (Type) <= sizeof (NullPool));
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static inline const Type &get () { return *(const Type*)NullPool; }
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};
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/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */
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#define DEFINE_NULL_DATA(Type, size, data) \
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static const char _Null##Type[size] = data; \
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template <> \
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struct Null <Type> \
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{ \
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static inline const Type &get () { return *(const Type*)_Null##Type; } \
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}
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/* Accessor macro. */
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#define Null(Type) (Null<Type>::get())
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#define ASSERT_SIZE_DATA(Type, size, data) \
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ASSERT_SIZE (Type, size); \
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DEFINE_NULL_DATA (Type, size, data)
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/* get_for_data() is a static class method returning a reference to an
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* instance of Type located at the input data location. It's just a
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* fancy, NULL-safe, cast! */
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#define STATIC_DEFINE_GET_FOR_DATA(Type) \
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static inline const Type& get_for_data (const char *data) \
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{ \
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if (HB_UNLIKELY (data == NULL)) return Null(Type); \
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return *(const Type*)data; \
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}
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/* Like get_for_data(), but checks major version first. */
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#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, MajorMin, MajorMax) \
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static inline const Type& get_for_data (const char *data) \
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{ \
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if (HB_UNLIKELY (data == NULL)) return Null(Type); \
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const Type& t = *(const Type*)data; \
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if (HB_UNLIKELY (t.version.major < MajorMin || t.version.major > MajorMax)) return Null(Type); \
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return t; \
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}
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/*
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/*
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* Sanitize
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* Sanitize
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*/
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*/
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@ -113,151 +261,6 @@ hb_sanitize_edit (hb_sanitize_context_t *context)
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#define NEUTER(Var, Val) (SANITIZE_OBJ (Var) && hb_sanitize_edit (context) && ((Var) = (Val), true))
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#define NEUTER(Var, Val) (SANITIZE_OBJ (Var) && hb_sanitize_edit (context) && ((Var) = (Val), true))
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/*
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* Array types
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*/
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/* get_len() is a method returning the number of items in an array-like object */
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#define DEFINE_LEN(Type, array, num) \
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inline unsigned int get_len(void) const { return num; } \
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/* An array type is one that contains a variable number of objects
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* as its last item. An array object is extended with get_len()
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* methods, as well as overloaded [] operator. */
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#define DEFINE_ARRAY_TYPE(Type, array, num) \
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DEFINE_INDEX_OPERATOR(Type, array, num) \
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DEFINE_LEN(Type, array, num)
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#define DEFINE_INDEX_OPERATOR(Type, array, num) \
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inline const Type& operator[] (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= num)) return Null(Type); \
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return array[i]; \
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}
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/* An offset array type is like an array type, but it contains a table
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* of offsets to the objects, relative to the beginning of the current
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* object. */
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#define DEFINE_OFFSET_ARRAY_TYPE(Type, array, num) \
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DEFINE_OFFSET_INDEX_OPERATOR(Type, array, num) \
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DEFINE_LEN(Offset, array, num)
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#define DEFINE_OFFSET_INDEX_OPERATOR(Type, array, num) \
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inline const Type& operator[] (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= num)) return Null(Type); \
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if (HB_UNLIKELY (!array[i])) return Null(Type); \
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return *(const Type)((const char*)this + array[i]); \
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}
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#define DEFINE_ARRAY_INTERFACE(Type, name) \
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inline const Type& get_##name (unsigned int i) const { return (*this)[i]; } \
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inline unsigned int get_##name##_count (void) const { return this->get_len (); }
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#define DEFINE_INDEX_ARRAY_INTERFACE(name) \
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inline unsigned int get_##name##_index (unsigned int i) const \
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{ \
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if (HB_UNLIKELY (i >= get_len ())) return NO_INDEX; \
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return (*this)[i]; \
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} \
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inline unsigned int get_##name##_count (void) const { return get_len (); }
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/*
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* List types
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*/
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#define DEFINE_LIST_INTERFACE(Type, name) \
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inline const Type& get_##name (unsigned int i) const { return (this+name##List)[i]; } \
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inline unsigned int get_##name##_count (void) const { return (this+name##List).len; }
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/*
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* Tag types
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*/
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#define DEFINE_TAG_ARRAY_INTERFACE(Type, name) \
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DEFINE_ARRAY_INTERFACE (Type, name); \
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inline const Tag& get_##name##_tag (unsigned int i) const { return (*this)[i].tag; }
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#define DEFINE_TAG_LIST_INTERFACE(Type, name) \
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DEFINE_LIST_INTERFACE (Type, name); \
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inline const Tag& get_##name##_tag (unsigned int i) const { return (this+name##List).get_tag (i); }
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#define DEFINE_TAG_FIND_INTERFACE(Type, name) \
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inline bool find_##name##_index (hb_tag_t tag, unsigned int *index) const { \
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const Tag t = tag; \
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for (unsigned int i = 0; i < get_##name##_count (); i++) \
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{ \
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if (t == get_##name##_tag (i)) \
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{ \
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if (index) *index = i; \
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return true; \
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} \
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} \
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if (index) *index = NO_INDEX; \
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return false; \
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} \
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inline const Type& get_##name##_by_tag (hb_tag_t tag) const \
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{ \
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unsigned int i; \
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if (find_##name##_index (tag, &i)) \
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return get_##name (i); \
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else \
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return Null(Type); \
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}
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/*
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* Class features
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*/
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/* Null objects */
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/* Global nul-content Null pool. Enlarge as necessary. */
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static const char NullPool[16] = "";
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/* Generic template for nul-content sizeof-sized Null objects. */
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template <typename Type>
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struct Null
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{
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ASSERT_STATIC (sizeof (Type) <= sizeof (NullPool));
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static inline const Type &get () { return *(const Type*)NullPool; }
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};
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/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */
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#define DEFINE_NULL_DATA(Type, size, data) \
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static const char _Null##Type[size] = data; \
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template <> \
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struct Null <Type> \
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{ \
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static inline const Type &get () { return *(const Type*)_Null##Type; } \
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}
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/* Accessor macro. */
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#define Null(Type) (Null<Type>::get())
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#define ASSERT_SIZE_DATA(Type, size, data) \
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ASSERT_SIZE (Type, size); \
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DEFINE_NULL_DATA (Type, size, data)
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/* get_for_data() is a static class method returning a reference to an
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* instance of Type located at the input data location. It's just a
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* fancy, NULL-safe, cast! */
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#define STATIC_DEFINE_GET_FOR_DATA(Type) \
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static inline const Type& get_for_data (const char *data) \
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{ \
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if (HB_UNLIKELY (data == NULL)) return Null(Type); \
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return *(const Type*)data; \
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}
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/* Like get_for_data(), but checks major version first. */
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#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, MajorMin, MajorMax) \
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static inline const Type& get_for_data (const char *data) \
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{ \
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if (HB_UNLIKELY (data == NULL)) return Null(Type); \
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const Type& t = *(const Type*)data; \
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if (HB_UNLIKELY (t.version.major < MajorMin || t.version.major > MajorMax)) return Null(Type); \
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return t; \
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}
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/*
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/*
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*
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*
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