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Simplify array access

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This commit is contained in:
Behdad Esfahbod 2010-05-10 18:20:54 -04:00
parent 54842374c2
commit b961518b96
4 changed files with 25 additions and 34 deletions
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29
src/hb-open-type-private.hh
View File

@ -89,7 +89,6 @@ inline Type& StructAfter(TObject &X)
#define DEFINE_SIZE_STATIC(size) \ #define DEFINE_SIZE_STATIC(size) \
_DEFINE_SIZE_ASSERTION (size); \ _DEFINE_SIZE_ASSERTION (size); \
static inline unsigned int get_size (void) { return (size); } \
static const unsigned int static_size = (size); \ static const unsigned int static_size = (size); \
static const unsigned int min_size = (size) static const unsigned int min_size = (size)
@ -515,9 +514,6 @@ struct LongOffsetTo : GenericOffsetTo<LongOffset, Type> {};
template <typename LenType, typename Type> template <typename LenType, typename Type>
struct GenericArrayOf struct GenericArrayOf
{ {
const Type *array(void) const { return &StructAfter<Type> (len); }
Type *array(void) { return &StructAfter<Type> (len); }
const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const
{ {
unsigned int count = len; unsigned int count = len;
@ -527,13 +523,13 @@ struct GenericArrayOf
count -= start_offset; count -= start_offset;
count = MIN (count, *pcount); count = MIN (count, *pcount);
*pcount = count; *pcount = count;
return array() + start_offset; return array + start_offset;
} }
inline const Type& operator [] (unsigned int i) const inline const Type& operator [] (unsigned int i) const
{ {
if (unlikely (i >= len)) return Null(Type); if (unlikely (i >= len)) return Null(Type);
return array()[i]; return array[i];
} }
inline unsigned int get_size () const inline unsigned int get_size () const
{ return len.static_size + len * Type::static_size; } { return len.static_size + len * Type::static_size; }
@ -551,7 +547,7 @@ struct GenericArrayOf
* other structs. */ * other structs. */
unsigned int count = len; unsigned int count = len;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
if (array()[i].sanitize (context)) if (array[i].sanitize (context))
return false; return false;
return true; return true;
} }
@ -560,7 +556,7 @@ struct GenericArrayOf
if (!likely (sanitize_shallow (context))) return false; if (!likely (sanitize_shallow (context))) return false;
unsigned int count = len; unsigned int count = len;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
if (!array()[i].sanitize (context, base)) if (!array[i].sanitize (context, base))
return false; return false;
return true; return true;
} }
@ -570,7 +566,7 @@ struct GenericArrayOf
if (!likely (sanitize_shallow (context))) return false; if (!likely (sanitize_shallow (context))) return false;
unsigned int count = len; unsigned int count = len;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
if (!array()[i].sanitize (context, base, user_data)) if (!array[i].sanitize (context, base, user_data))
return false; return false;
return true; return true;
} }
@ -584,8 +580,7 @@ struct GenericArrayOf
public: public:
LenType len; LenType len;
private: Type array[VAR];
Type arrayX[VAR];
public: public:
DEFINE_SIZE_VAR (sizeof (LenType), Type); DEFINE_SIZE_VAR (sizeof (LenType), Type);
}; };
@ -617,7 +612,7 @@ struct OffsetListOf : OffsetArrayOf<Type>
inline const Type& operator [] (unsigned int i) const inline const Type& operator [] (unsigned int i) const
{ {
if (unlikely (i >= this->len)) return Null(Type); if (unlikely (i >= this->len)) return Null(Type);
return this+this->array()[i]; return this+this->array[i];
} }
inline bool sanitize (hb_sanitize_context_t *context) { inline bool sanitize (hb_sanitize_context_t *context) {
@ -637,13 +632,10 @@ struct OffsetListOf : OffsetArrayOf<Type>
template <typename Type> template <typename Type>
struct HeadlessArrayOf struct HeadlessArrayOf
{ {
const Type *array(void) const { return &StructAfter<Type> (len); }
Type *array(void) { return &StructAfter<Type> (len); }
inline const Type& operator [] (unsigned int i) const inline const Type& operator [] (unsigned int i) const
{ {
if (unlikely (i >= len || !i)) return Null(Type); if (unlikely (i >= len || !i)) return Null(Type);
return array()[i-1]; return array[i-1];
} }
inline unsigned int get_size () const inline unsigned int get_size () const
{ return len.static_size + (len ? len - 1 : 0) * Type::static_size; } { return len.static_size + (len ? len - 1 : 0) * Type::static_size; }
@ -665,7 +657,7 @@ struct HeadlessArrayOf
* to do have a simple sanitize(), ie. they do not reference * to do have a simple sanitize(), ie. they do not reference
* other structs. */ * other structs. */
unsigned int count = len ? len - 1 : 0; unsigned int count = len ? len - 1 : 0;
Type *a = array(); Type *a = array;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
if (!a[i].sanitize (context)) if (!a[i].sanitize (context))
return false; return false;
@ -673,8 +665,7 @@ struct HeadlessArrayOf
} }
USHORT len; USHORT len;
private: Type array[VAR];
Type arrayX[VAR];
public: public:
DEFINE_SIZE_VAR (sizeof (USHORT), Type); DEFINE_SIZE_VAR (sizeof (USHORT), Type);
}; };

8
src/hb-ot-layout-common-private.hh
View File

@ -89,7 +89,7 @@ struct RecordArrayOf : ArrayOf<Record<Type> > {
Tag t; Tag t;
t.set (tag); t.set (tag);
/* TODO: bsearch (need to sort in sanitize) */ /* TODO: bsearch (need to sort in sanitize) */
const Record<Type> *a = this->array(); const Record<Type> *a = this->array;
unsigned int count = this->len; unsigned int count = this->len;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
{ {
@ -123,7 +123,7 @@ struct IndexArray : ArrayOf<USHORT>
{ {
if (unlikely (i >= this->len)) if (unlikely (i >= this->len))
return NO_INDEX; return NO_INDEX;
return this->array()[i]; return this->array[i];
} }
inline unsigned int get_indexes (unsigned int start_offset, inline unsigned int get_indexes (unsigned int start_offset,
unsigned int *_count /* IN/OUT */, unsigned int *_count /* IN/OUT */,
@ -600,8 +600,8 @@ struct Device
inline unsigned int get_size () const inline unsigned int get_size () const
{ {
unsigned int f = deltaFormat; unsigned int f = deltaFormat;
if (unlikely (f < 1 || f > 3 || startSize > endSize)) return 3 * USHORT::get_size (); if (unlikely (f < 1 || f > 3 || startSize > endSize)) return 3 * USHORT::static_size;
return USHORT::get_size () * (4 + ((endSize - startSize) >> (4 - f))); return USHORT::static_size * (4 + ((endSize - startSize) >> (4 - f)));
} }
inline bool sanitize (hb_sanitize_context_t *context) { inline bool sanitize (hb_sanitize_context_t *context) {

6
src/hb-ot-layout-gsub-private.hh
View File

@ -167,7 +167,7 @@ struct Sequence
return false; return false;
_hb_buffer_add_output_glyphs_be16 (context->buffer, 1, _hb_buffer_add_output_glyphs_be16 (context->buffer, 1,
substitute.len, (const uint16_t *) substitute.array(), substitute.len, (const uint16_t *) substitute.array,
0xFFFF, 0xFFFF); 0xFFFF, 0xFFFF);
/* This is a guess only ... */ /* This is a guess only ... */
@ -616,10 +616,10 @@ struct ReverseChainSingleSubstFormat1
const ArrayOf<GlyphID> &substitute = StructAfter<ArrayOf<GlyphID> > (lookahead); const ArrayOf<GlyphID> &substitute = StructAfter<ArrayOf<GlyphID> > (lookahead);
if (match_backtrack (context, if (match_backtrack (context,
backtrack.len, (USHORT *) backtrack.array(), backtrack.len, (USHORT *) backtrack.array,
match_coverage, this) && match_coverage, this) &&
match_lookahead (context, match_lookahead (context,
lookahead.len, (USHORT *) lookahead.array(), lookahead.len, (USHORT *) lookahead.array,
match_coverage, this, match_coverage, this,
1)) 1))
{ {

16
src/hb-ot-layout-gsubgpos-private.hh
View File

@ -560,10 +560,10 @@ struct ChainRule
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input); const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input);
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead); const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
return chain_context_lookup (context, return chain_context_lookup (context,
backtrack.len, backtrack.array(), backtrack.len, backtrack.array,
input.len, input.array(), input.len, input.array,
lookahead.len, lookahead.array(), lookahead.len, lookahead.array,
lookup.len, lookup.array(), lookup.len, lookup.array,
lookup_context); lookup_context);
return false; return false;
} }
@ -749,10 +749,10 @@ struct ChainContextFormat3
{this, this, this} {this, this, this}
}; };
return chain_context_lookup (context, return chain_context_lookup (context,
backtrack.len, (const USHORT *) backtrack.array(), backtrack.len, (const USHORT *) backtrack.array,
input.len, (const USHORT *) input.array() + 1, input.len, (const USHORT *) input.array + 1,
lookahead.len, (const USHORT *) lookahead.array(), lookahead.len, (const USHORT *) lookahead.array,
lookup.len, lookup.array(), lookup.len, lookup.array,
lookup_context); lookup_context);
return false; return false;
} }