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authorBehdad Esfahbod <behdad@behdad.org>2009-08-04 11:38:50 -0400
committerBehdad Esfahbod <behdad@behdad.org>2009-08-04 11:41:02 -0400
commit7c897c7a2452ec740ac434561d2334c72c1ffdd8 (patch)
tree6cb2968a03e2ddea785a41067d9bd8fc513bc122
parent5e8a31e45cd4b837e1c5e2fa5fb6e78dda1d1df8 (diff)
downloadpango-7c897c7a2452ec740ac434561d2334c72c1ffdd8.tar.gz
[HB] More cast cleanup
-rw-r--r--pango/opentype/hb-open-types-private.hh23
-rw-r--r--pango/opentype/hb-ot-layout-common-private.hh7
-rw-r--r--pango/opentype/hb-ot-layout-gsub-private.hh27
-rw-r--r--pango/opentype/hb-ot-layout-gsubgpos-private.hh64
4 files changed, 50 insertions, 71 deletions
diff --git a/pango/opentype/hb-open-types-private.hh b/pango/opentype/hb-open-types-private.hh
index 2ece79d2..96e5eb14 100644
--- a/pango/opentype/hb-open-types-private.hh
+++ b/pango/opentype/hb-open-types-private.hh
@@ -42,8 +42,13 @@
* Casts
*/
-#define CONST_CHARP(X) (reinterpret_cast<const char *>(X))
-#define CHARP(X) ((char *)reinterpret_cast<const char *>(X))
+#define CONST_CHARP(X) (reinterpret_cast<const char *>(X))
+#define DECONST_CHARP(X) ((char *)reinterpret_cast<const char *>(X))
+#define CHARP(X) (reinterpret_cast<char *>(X))
+
+#define CONST_CAST(T,X,Ofs) (*(reinterpret_cast<const T *>(CONST_CHARP(&(X)) + Ofs)))
+#define DECONST_CAST(T,X,Ofs) (*(reinterpret_cast<T *>((char *)CONST_CHARP(&(X)) + Ofs)))
+#define CAST(T,X,Ofs) (*(reinterpret_cast<T *>(CHARP(&(X)) + Ofs)))
/*
@@ -65,7 +70,7 @@ struct _hb_sanitize_context_t
#define SANITIZE(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG))
#define SANITIZE2(X,Y) SANITIZE (X) && SANITIZE (Y)
-#define SANITIZE_THIS(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG, reinterpret_cast<const char *>(this)))
+#define SANITIZE_THIS(X) HB_LIKELY ((X).sanitize (SANITIZE_ARG, CONST_CHARP(this)))
#define SANITIZE_THIS2(X,Y) SANITIZE_THIS (X) && SANITIZE_THIS (Y)
#define SANITIZE_THIS3(X,Y,Z) SANITIZE_THIS (X) && SANITIZE_THIS (Y) && SANITIZE_THIS(Z)
@@ -73,7 +78,7 @@ struct _hb_sanitize_context_t
#define SANITIZE_OBJ(X) SANITIZE_MEM(&(X), sizeof (X))
#define SANITIZE_GET_SIZE() SANITIZE_MEM (this, this->get_size ())
-#define SANITIZE_MEM(B,L) HB_LIKELY (context->start <= reinterpret_cast<const char *>(B) && reinterpret_cast<const char *>(B) + (L) <= context->end) /* XXX overflow */
+#define SANITIZE_MEM(B,L) HB_LIKELY (context->start <= CONST_CHARP(B) && CONST_CHARP(B) + (L) <= context->end) /* XXX overflow */
#define NEUTER(Var, Val) (false)
@@ -272,8 +277,8 @@ struct Tag : ULONG
inline Tag (const char *c) { *(ULONG*)this = *(ULONG*)c; }
inline bool operator== (const char *c) const { return *(ULONG*)this == *(ULONG*)c; }
/* What the char* converters return is NOT nul-terminated. Print using "%.4s" */
- inline operator const char* (void) const { return reinterpret_cast<const char *>(this); }
- inline operator char* (void) { return reinterpret_cast<char *>(this); }
+ inline operator const char* (void) const { return CONST_CHARP(this); }
+ inline operator char* (void) { return CHARP(this); }
};
ASSERT_SIZE (Tag, 4);
#define _NULL_TAG_INIT {' ', ' ', ' ', ' '}
@@ -337,14 +342,14 @@ struct GenericOffsetTo : OffsetType
{
unsigned int offset = *this;
if (HB_UNLIKELY (!offset)) return Null(Type);
- return *reinterpret_cast<const Type*>(reinterpret_cast<const char *>(base) + offset);
+ return CONST_CAST(Type, base, offset);
}
inline bool sanitize (SANITIZE_ARG_DEF, const void *base) {
if (!SANITIZE_OBJ (*this)) return false;
unsigned int offset = *this;
if (HB_UNLIKELY (!offset)) return true;
- return SANITIZE (*reinterpret_cast<Type*>((char *)(reinterpret_cast<const char *>(base) + offset))) || NEUTER (*this, 0);
+ return SANITIZE (CAST(Type, base, offset)) || NEUTER (*this, 0);
}
};
template <typename Base, typename OffsetType, typename Type>
@@ -379,7 +384,7 @@ struct GenericArrayOf
return false;
*/
}
- inline bool sanitize (SANITIZE_ARG_DEF, const char *base) {
+ inline bool sanitize (SANITIZE_ARG_DEF, const void *base) {
if (!(SANITIZE (len) && SANITIZE_GET_SIZE())) return false;
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
diff --git a/pango/opentype/hb-ot-layout-common-private.hh b/pango/opentype/hb-ot-layout-common-private.hh
index 9b0d032d..6720b600 100644
--- a/pango/opentype/hb-ot-layout-common-private.hh
+++ b/pango/opentype/hb-ot-layout-common-private.hh
@@ -46,7 +46,7 @@
template <typename Type>
struct Record
{
- inline bool sanitize (SANITIZE_ARG_DEF, const char *base) {
+ inline bool sanitize (SANITIZE_ARG_DEF, const void *base) {
/* Note: Only accept ASCII-visible tags (mind DEL)
* This is one of the few times (only time?) we check
* for data integrity, as opposed o just boundary checks
@@ -210,8 +210,7 @@ struct Lookup
unsigned int flag = lookupFlag;
if (HB_UNLIKELY (flag & LookupFlag::UseMarkFilteringSet))
{
- const USHORT &markFilteringSet = *(const USHORT*)
- (CONST_CHARP(&subTable) + subTable.get_size ());
+ const USHORT &markFilteringSet = CONST_CAST (USHORT, subTable, subTable.get_size ());
flag += (markFilteringSet << 16);
}
return flag;
@@ -221,7 +220,7 @@ struct Lookup
if (!(SANITIZE_SELF () && SANITIZE_THIS (subTable))) return false;
if (HB_UNLIKELY (lookupFlag & LookupFlag::UseMarkFilteringSet))
{
- USHORT &markFilteringSet = *(USHORT*) (CHARP(&subTable) + subTable.get_size ());
+ USHORT &markFilteringSet = CAST (USHORT, subTable, subTable.get_size ());
if (!SANITIZE (markFilteringSet)) return false;
}
return true;
diff --git a/pango/opentype/hb-ot-layout-gsub-private.hh b/pango/opentype/hb-ot-layout-gsub-private.hh
index e29128f1..c3fca5b4 100644
--- a/pango/opentype/hb-ot-layout-gsub-private.hh
+++ b/pango/opentype/hb-ot-layout-gsub-private.hh
@@ -543,9 +543,7 @@ struct ExtensionSubst : Extension
private:
inline const struct SubstLookupSubTable& get_subtable (void) const
- { return (const struct SubstLookupSubTable&) Extension::get_subtable (); }
- inline struct SubstLookupSubTable& get_subtable (void)
- { return (struct SubstLookupSubTable&) Extension::get_subtable (); }
+ { return CONST_CAST (SubstLookupSubTable, Extension::get_subtable (), 0); }
inline bool apply (APPLY_ARG_DEF) const;
@@ -568,17 +566,15 @@ struct ReverseChainSingleSubstFormat1
if (HB_LIKELY (index == NOT_COVERED))
return false;
- const OffsetArrayOf<Coverage> &lookahead = *(const OffsetArrayOf<Coverage>*)
- (CONST_CHARP(&backtrack) + backtrack.get_size ());
- const ArrayOf<GlyphID> &substitute = *(const ArrayOf<GlyphID>*)
- (CONST_CHARP(&lookahead) + lookahead.get_size ());
+ const OffsetArrayOf<Coverage> &lookahead = CONST_CAST (OffsetArrayOf<Coverage>, backtrack, backtrack.get_size ());
+ const ArrayOf<GlyphID> &substitute = CONST_CAST (ArrayOf<GlyphID>, lookahead, lookahead.get_size ());
if (match_backtrack (APPLY_ARG,
backtrack.len, (USHORT *) backtrack.array,
- match_coverage, CHARP(this)) &&
+ match_coverage, DECONST_CHARP(this)) &&
match_lookahead (APPLY_ARG,
lookahead.len, (USHORT *) lookahead.array,
- match_coverage, CHARP(this),
+ match_coverage, DECONST_CHARP(this),
1))
{
IN_CURGLYPH () = substitute[index];
@@ -592,12 +588,10 @@ struct ReverseChainSingleSubstFormat1
inline bool sanitize (SANITIZE_ARG_DEF) {
if (!SANITIZE_THIS2 (coverage, backtrack))
return false;
- OffsetArrayOf<Coverage> &lookahead = *(OffsetArrayOf<Coverage>*)
- (CONST_CHARP(&backtrack) + backtrack.get_size ());
+ OffsetArrayOf<Coverage> &lookahead = CAST (OffsetArrayOf<Coverage>, backtrack, backtrack.get_size ());
if (!SANITIZE_THIS (lookahead))
return false;
- ArrayOf<GlyphID> &substitute = *(ArrayOf<GlyphID>*)
- (CONST_CHARP(&lookahead) + lookahead.get_size ());
+ ArrayOf<GlyphID> &substitute = CAST (ArrayOf<GlyphID>, lookahead, lookahead.get_size ());
if (!SANITIZE (substitute))
return false;
}
@@ -720,9 +714,7 @@ ASSERT_SIZE (SubstLookupSubTable, 2);
struct SubstLookup : Lookup
{
inline const SubstLookupSubTable& get_subtable (unsigned int i) const
- { return (const SubstLookupSubTable&) Lookup::get_subtable (i); }
- inline SubstLookupSubTable& get_subtable (unsigned int i)
- { return (SubstLookupSubTable&) Lookup::get_subtable (i); }
+ { return CONST_CAST (SubstLookupSubTable, Lookup::get_subtable (i), 0); }
/* Like get_type(), but looks through extension lookups.
* Never returns Extension */
@@ -871,7 +863,8 @@ inline bool ExtensionSubst::apply (APPLY_ARG_DEF) const
inline bool ExtensionSubst::sanitize (SANITIZE_ARG_DEF)
{
- return Extension::sanitize (SANITIZE_ARG) && get_subtable ().sanitize (SANITIZE_ARG);
+ return Extension::sanitize (SANITIZE_ARG) &&
+ DECONST_CAST (SubstLookupSubTable, get_subtable (), 0).sanitize (SANITIZE_ARG);
}
static inline bool substitute_lookup (APPLY_ARG_DEF, unsigned int lookup_index)
diff --git a/pango/opentype/hb-ot-layout-gsubgpos-private.hh b/pango/opentype/hb-ot-layout-gsubgpos-private.hh
index 4324c93f..ec305e3c 100644
--- a/pango/opentype/hb-ot-layout-gsubgpos-private.hh
+++ b/pango/opentype/hb-ot-layout-gsubgpos-private.hh
@@ -64,7 +64,7 @@ static inline bool match_glyph (hb_codepoint_t glyph_id, const USHORT &value, ch
static inline bool match_class (hb_codepoint_t glyph_id, const USHORT &value, char *data)
{
- const ClassDef &class_def = *(const ClassDef *)data;
+ const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data);
return class_def.get_class (glyph_id) == value;
}
@@ -256,9 +256,7 @@ struct Rule
private:
inline bool apply (APPLY_ARG_DEF, ContextLookupContext &lookup_context) const
{
- const LookupRecord *lookupRecord = (const LookupRecord *)
- (CONST_CHARP(input) +
- sizeof (input[0]) * (inputCount ? inputCount - 1 : 0));
+ const LookupRecord *lookupRecord = &CONST_CAST (LookupRecord, input, sizeof (input[0]) * (inputCount ? inputCount - 1 : 0));
return context_lookup (APPLY_ARG,
inputCount, input,
lookupCount, lookupRecord,
@@ -364,7 +362,7 @@ struct ContextFormat2
*/
struct ContextLookupContext lookup_context = {
{match_class, apply_func},
- CHARP(&class_def)
+ DECONST_CHARP(&class_def)
};
return rule_set.apply (APPLY_ARG, lookup_context);
}
@@ -399,12 +397,10 @@ struct ContextFormat3
if (HB_LIKELY (index == NOT_COVERED))
return false;
- const LookupRecord *lookupRecord = (const LookupRecord *)
- (CONST_CHARP(coverage) +
- sizeof (coverage[0]) * glyphCount);
+ const LookupRecord *lookupRecord = &CONST_CAST(LookupRecord, coverage, sizeof (coverage[0]) * glyphCount);
struct ContextLookupContext lookup_context = {
{match_coverage, apply_func},
- CHARP(this)
+ DECONST_CHARP(this)
};
return context_lookup (APPLY_ARG,
glyphCount, (const USHORT *) (coverage + 1),
@@ -417,9 +413,7 @@ struct ContextFormat3
unsigned int count = glyphCount;
for (unsigned int i = 0; i < count; i++)
if (!SANITIZE_THIS (coverage[i])) return false;
- LookupRecord *lookupRecord = (LookupRecord *)
- (CHARP(coverage) +
- sizeof (coverage[0]) * glyphCount);
+ LookupRecord *lookupRecord = &CAST(LookupRecord, coverage, sizeof (coverage[0]) * glyphCount);
return SANITIZE_MEM (lookupRecord, sizeof (lookupRecord[0]) * lookupCount);
}
@@ -521,12 +515,9 @@ struct ChainRule
private:
inline bool apply (APPLY_ARG_DEF, ChainContextLookupContext &lookup_context) const
{
- const HeadlessArrayOf<USHORT> &input = *(const HeadlessArrayOf<USHORT>*)
- (CONST_CHARP(&backtrack) + backtrack.get_size ());
- const ArrayOf<USHORT> &lookahead = *(const ArrayOf<USHORT>*)
- (CONST_CHARP(&input) + input.get_size ());
- const ArrayOf<LookupRecord> &lookup = *(const ArrayOf<LookupRecord>*)
- (CONST_CHARP(&lookahead) + lookahead.get_size ());
+ const HeadlessArrayOf<USHORT> &input = CONST_CAST (HeadlessArrayOf<USHORT>, backtrack, backtrack.get_size ());
+ const ArrayOf<USHORT> &lookahead = CONST_CAST (ArrayOf<USHORT>, input, input.get_size ());
+ const ArrayOf<LookupRecord> &lookup = CONST_CAST (ArrayOf<LookupRecord>, lookahead, lookahead.get_size ());
return chain_context_lookup (APPLY_ARG,
backtrack.len, backtrack.array,
input.len, input.array + 1,
@@ -539,14 +530,11 @@ struct ChainRule
public:
inline bool sanitize (SANITIZE_ARG_DEF) {
if (!SANITIZE (backtrack)) return false;
- HeadlessArrayOf<USHORT> &input = *(HeadlessArrayOf<USHORT>*)
- (CHARP(&backtrack) + backtrack.get_size ());
+ HeadlessArrayOf<USHORT> &input = CAST (HeadlessArrayOf<USHORT>, backtrack, backtrack.get_size ());
if (!SANITIZE (input)) return false;
- ArrayOf<USHORT> &lookahead = *(ArrayOf<USHORT>*)
- (CHARP(&input) + input.get_size ());
+ ArrayOf<USHORT> &lookahead = CAST (ArrayOf<USHORT>, input, input.get_size ());
if (!SANITIZE (lookahead)) return false;
- ArrayOf<LookupRecord> &lookup = *(ArrayOf<LookupRecord>*)
- (CHARP(&lookahead) + lookahead.get_size ());
+ ArrayOf<LookupRecord> &lookup = CAST (ArrayOf<LookupRecord>, lookahead, lookahead.get_size ());
return SANITIZE (lookup);
}
@@ -648,9 +636,9 @@ struct ChainContextFormat2
*/
struct ChainContextLookupContext lookup_context = {
{match_class, apply_func},
- {CHARP(&backtrack_class_def),
- CHARP(&input_class_def),
- CHARP(&lookahead_class_def)}
+ {DECONST_CHARP(&backtrack_class_def),
+ DECONST_CHARP(&input_class_def),
+ DECONST_CHARP(&lookahead_class_def)}
};
return rule_set.apply (APPLY_ARG, lookup_context);
}
@@ -692,20 +680,17 @@ struct ChainContextFormat3
inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
{
- const OffsetArrayOf<Coverage> &input = *(const OffsetArrayOf<Coverage>*)
- (CONST_CHARP(&backtrack) + backtrack.get_size ());
+ const OffsetArrayOf<Coverage> &input = CONST_CAST (OffsetArrayOf<Coverage>, backtrack, backtrack.get_size ());
unsigned int index = (this+input[0]) (IN_CURGLYPH ());
if (HB_LIKELY (index == NOT_COVERED))
return false;
- const OffsetArrayOf<Coverage> &lookahead = *(const OffsetArrayOf<Coverage>*)
- (CONST_CHARP(&input) + input.get_size ());
- const ArrayOf<LookupRecord> &lookup = *(const ArrayOf<LookupRecord>*)
- (CONST_CHARP(&lookahead) + lookahead.get_size ());
+ const OffsetArrayOf<Coverage> &lookahead = CONST_CAST (OffsetArrayOf<Coverage>, input, input.get_size ());
+ const ArrayOf<LookupRecord> &lookup = CONST_CAST (ArrayOf<LookupRecord>, lookahead, lookahead.get_size ());
struct ChainContextLookupContext lookup_context = {
{match_coverage, apply_func},
- {CHARP(this), CHARP(this), CHARP(this)}
+ {DECONST_CHARP(this), DECONST_CHARP(this), DECONST_CHARP(this)}
};
return chain_context_lookup (APPLY_ARG,
backtrack.len, (USHORT *) backtrack.array,
@@ -718,14 +703,11 @@ struct ChainContextFormat3
inline bool sanitize (SANITIZE_ARG_DEF) {
if (!SANITIZE_THIS (backtrack)) return false;
- OffsetArrayOf<Coverage> &input = *(OffsetArrayOf<Coverage>*)
- (CHARP(&backtrack) + backtrack.get_size ());
+ OffsetArrayOf<Coverage> &input = CAST (OffsetArrayOf<Coverage>, backtrack, backtrack.get_size ());
if (!SANITIZE_THIS (input)) return false;
- OffsetArrayOf<Coverage> &lookahead = *(OffsetArrayOf<Coverage>*)
- (CHARP(&input) + input.get_size ());
+ OffsetArrayOf<Coverage> &lookahead = CAST (OffsetArrayOf<Coverage>, input, input.get_size ());
if (!SANITIZE_THIS (lookahead)) return false;
- ArrayOf<LookupRecord> &lookup = *(ArrayOf<LookupRecord>*)
- (CHARP(&lookahead) + lookahead.get_size ());
+ ArrayOf<LookupRecord> &lookup = CAST (ArrayOf<LookupRecord>, lookahead, lookahead.get_size ());
return SANITIZE (lookup);
}
@@ -794,7 +776,7 @@ struct ExtensionFormat1
{
unsigned int offset = get_offset ();
if (HB_UNLIKELY (!offset)) return Null(LookupSubTable);
- return *(LookupSubTable*)(CHARP(this) + offset);
+ return CONST_CAST (LookupSubTable, *this, offset);
}
inline bool sanitize (SANITIZE_ARG_DEF) {