/*
- * Copyright (C) 2007,2008,2009 Red Hat, Inc.
+ * Copyright (C) 2007,2008,2009,2010 Red Hat, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
#endif
#define TRACE_APPLY() \
- HB_STMT_START { \
- if (HB_DEBUG_APPLY) \
- _hb_trace ("APPLY", HB_FUNC, this, apply_depth, HB_DEBUG_APPLY); \
- } HB_STMT_END
+ hb_trace_t<HB_DEBUG_APPLY> trace (&context->debug_depth); \
+ trace.log ("APPLY", HB_FUNC, this);
-#define APPLY_ARG_DEF \
- hb_apply_context_t *context, \
- unsigned int apply_depth HB_UNUSED
-#define APPLY_ARG \
- context, \
- (HB_DEBUG_APPLY ? apply_depth + 1 : 0)
-
struct hb_apply_context_t
{
+ unsigned int debug_depth;
hb_ot_layout_context_t *layout;
hb_buffer_t *buffer;
unsigned int context_length;
typedef bool (*match_func_t) (hb_codepoint_t glyph_id, const USHORT &value, const char *data);
-typedef bool (*apply_lookup_func_t) (APPLY_ARG_DEF, unsigned int lookup_index);
+typedef bool (*apply_lookup_func_t) (hb_apply_context_t *context, unsigned int lookup_index);
struct ContextFuncs
{
}
-static inline bool match_input (APPLY_ARG_DEF,
+static inline bool match_input (hb_apply_context_t *context,
unsigned int count, /* Including the first glyph (not matched) */
const USHORT input[], /* Array of input values--start with second glyph */
match_func_t match_func,
return true;
}
-static inline bool match_backtrack (APPLY_ARG_DEF,
+static inline bool match_backtrack (hb_apply_context_t *context,
unsigned int count,
const USHORT backtrack[],
match_func_t match_func,
return true;
}
-static inline bool match_lookahead (APPLY_ARG_DEF,
+static inline bool match_lookahead (hb_apply_context_t *context,
unsigned int count,
const USHORT lookahead[],
match_func_t match_func,
struct LookupRecord
{
- static inline unsigned int get_size () { return sizeof (LookupRecord); }
-
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_SELF ();
+ return context->check_struct (this);
}
USHORT sequenceIndex; /* Index into current glyph
* sequence--first glyph = 0 */
USHORT lookupListIndex; /* Lookup to apply to that
* position--zero--based */
+ public:
+ DEFINE_SIZE_STATIC (4);
};
-ASSERT_SIZE (LookupRecord, 4);
-static inline bool apply_lookup (APPLY_ARG_DEF,
+static inline bool apply_lookup (hb_apply_context_t *context,
unsigned int count, /* Including the first glyph */
unsigned int lookupCount,
const LookupRecord lookupRecord[], /* Array of LookupRecords--in design order */
unsigned int old_pos = context->buffer->in_pos;
/* Apply a lookup */
- bool done = apply_func (APPLY_ARG, lookupRecord->lookupListIndex);
+ bool done = apply_func (context, lookupRecord->lookupListIndex);
lookupRecord++;
lookupCount--;
const char *match_data;
};
-static inline bool context_lookup (APPLY_ARG_DEF,
+static inline bool context_lookup (hb_apply_context_t *context,
unsigned int inputCount, /* Including the first glyph (not matched) */
const USHORT input[], /* Array of input values--start with second glyph */
unsigned int lookupCount,
const LookupRecord lookupRecord[],
ContextLookupContext &lookup_context)
{
- unsigned int new_context_length;
- if (!match_input (APPLY_ARG,
- inputCount, input,
- lookup_context.funcs.match, lookup_context.match_data,
- &new_context_length)) return false;
- unsigned int old_context_length;
- old_context_length = context->context_length;
- context->context_length = new_context_length;
- bool ret = apply_lookup (APPLY_ARG,
- inputCount,
- lookupCount, lookupRecord,
- lookup_context.funcs.apply);
- context->context_length = old_context_length;
- return ret;
+ hb_apply_context_t new_context = *context;
+ return match_input (context,
+ inputCount, input,
+ lookup_context.funcs.match, lookup_context.match_data,
+ &new_context.context_length)
+ && apply_lookup (&new_context,
+ inputCount,
+ lookupCount, lookupRecord,
+ lookup_context.funcs.apply);
}
struct Rule
friend struct RuleSet;
private:
- inline bool apply (APPLY_ARG_DEF, ContextLookupContext &lookup_context) const
+ inline bool apply (hb_apply_context_t *context, ContextLookupContext &lookup_context) const
{
TRACE_APPLY ();
- const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (input, input[0].get_size () * (inputCount ? inputCount - 1 : 0));
- return context_lookup (APPLY_ARG,
+ const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (input, input[0].static_size * (inputCount ? inputCount - 1 : 0));
+ return context_lookup (context,
inputCount, input,
lookupCount, lookupRecord,
lookup_context);
public:
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!(SANITIZE (inputCount) && SANITIZE (lookupCount))) return false;
- return SANITIZE_MEM (input,
- input[0].get_size () * inputCount +
- lookupRecordX[0].get_size () * lookupCount);
+ return inputCount.sanitize (context)
+ && lookupCount.sanitize (context)
+ && context->check_range (input,
+ input[0].static_size * inputCount
+ + lookupRecordX[0].static_size * lookupCount);
}
private:
* second glyph */
LookupRecord lookupRecordX[VAR]; /* Array of LookupRecords--in
* design order */
+ public:
+ DEFINE_SIZE_VAR2 (4, USHORT, LookupRecord);
};
-ASSERT_SIZE_VAR2 (Rule, 4, USHORT, LookupRecord);
struct RuleSet
{
- inline bool apply (APPLY_ARG_DEF, ContextLookupContext &lookup_context) const
+ inline bool apply (hb_apply_context_t *context, ContextLookupContext &lookup_context) const
{
TRACE_APPLY ();
unsigned int num_rules = rule.len;
for (unsigned int i = 0; i < num_rules; i++)
{
- if ((this+rule[i]).apply (APPLY_ARG, lookup_context))
+ if ((this+rule[i]).apply (context, lookup_context))
return true;
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, rule);
+ return rule.sanitize (context, this);
}
private:
friend struct Context;
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
unsigned int index = (this+coverage) (IN_CURGLYPH ());
{match_glyph, apply_func},
NULL
};
- return rule_set.apply (APPLY_ARG, lookup_context);
+ return rule_set.apply (context, lookup_context);
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, coverage)
- && SANITIZE_WITH_BASE (this, ruleSet);
+ return coverage.sanitize (context, this)
+ && ruleSet.sanitize (context, this);
}
private:
OffsetArrayOf<RuleSet>
ruleSet; /* Array of RuleSet tables
* ordered by Coverage Index */
+ public:
+ DEFINE_SIZE_STATIC (6);
};
-ASSERT_SIZE (ContextFormat1, 6);
struct ContextFormat2
friend struct Context;
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
unsigned int index = (this+coverage) (IN_CURGLYPH ());
{match_class, apply_func},
CharP(&class_def)
};
- return rule_set.apply (APPLY_ARG, lookup_context);
+ return rule_set.apply (context, lookup_context);
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, coverage)
- && SANITIZE_WITH_BASE (this, classDef)
- && SANITIZE_WITH_BASE (this, ruleSet);
+ return coverage.sanitize (context, this)
+ && classDef.sanitize (context, this)
+ && ruleSet.sanitize (context, this);
}
private:
OffsetArrayOf<RuleSet>
ruleSet; /* Array of RuleSet tables
* ordered by class */
+ public:
+ DEFINE_SIZE_STATIC (8);
};
-ASSERT_SIZE (ContextFormat2, 8);
struct ContextFormat3
friend struct Context;
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
unsigned int index = (this+coverage[0]) (IN_CURGLYPH ());
if (likely (index == NOT_COVERED))
return false;
- const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverage, coverage[0].get_size () * glyphCount);
+ const LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverage, coverage[0].static_size * glyphCount);
struct ContextLookupContext lookup_context = {
{match_coverage, apply_func},
CharP(this)
};
- return context_lookup (APPLY_ARG,
+ return context_lookup (context,
glyphCount, (const USHORT *) (coverage + 1),
lookupCount, lookupRecord,
lookup_context);
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE_SELF ()) return false;
+ if (!context->check_struct (this)) return false;
unsigned int count = glyphCount;
- if (!SANITIZE_ARRAY (coverage, OffsetTo<Coverage>::get_size (), glyphCount)) return false;
+ if (!context->check_array (coverage, coverage[0].static_size, count)) return false;
for (unsigned int i = 0; i < count; i++)
- if (!SANITIZE_WITH_BASE (this, coverage[i])) return false;
- LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverage, OffsetTo<Coverage>::get_size () * glyphCount);
- return SANITIZE_ARRAY (lookupRecord, LookupRecord::get_size (), lookupCount);
+ if (!coverage[i].sanitize (context, this)) return false;
+ LookupRecord *lookupRecord = &StructAtOffset<LookupRecord> (coverage, coverage[0].static_size * count);
+ return context->check_array (lookupRecord, lookupRecord[0].static_size, lookupCount);
}
private:
* table in glyph sequence order */
LookupRecord lookupRecordX[VAR]; /* Array of LookupRecords--in
* design order */
+ public:
+ DEFINE_SIZE_VAR2 (6, OffsetTo<Coverage>, LookupRecord);
};
-ASSERT_SIZE_VAR2 (ContextFormat3, 6, OffsetTo<Coverage>, LookupRecord);
struct Context
{
protected:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
switch (u.format) {
- case 1: return u.format1->apply (APPLY_ARG, apply_func);
- case 2: return u.format2->apply (APPLY_ARG, apply_func);
- case 3: return u.format3->apply (APPLY_ARG, apply_func);
+ case 1: return u.format1->apply (context, apply_func);
+ case 2: return u.format2->apply (context, apply_func);
+ case 3: return u.format3->apply (context, apply_func);
default:return false;
}
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE (u.format)) return false;
+ if (!u.format.sanitize (context)) return false;
switch (u.format) {
case 1: return u.format1->sanitize (context);
case 2: return u.format2->sanitize (context);
const char *match_data[3];
};
-static inline bool chain_context_lookup (APPLY_ARG_DEF,
+static inline bool chain_context_lookup (hb_apply_context_t *context,
unsigned int backtrackCount,
const USHORT backtrack[],
unsigned int inputCount, /* Including the first glyph (not matched) */
inputCount + lookaheadCount > context->context_length))
return false;
- unsigned int offset;
- if (!(match_backtrack (APPLY_ARG,
- backtrackCount, backtrack,
- lookup_context.funcs.match, lookup_context.match_data[0]) &&
- match_input (APPLY_ARG,
- inputCount, input,
- lookup_context.funcs.match, lookup_context.match_data[1],
- &offset) &&
- match_lookahead (APPLY_ARG,
- lookaheadCount, lookahead,
- lookup_context.funcs.match, lookup_context.match_data[2],
- offset))) return false;
-
- unsigned int old_context_length;
- old_context_length = context->context_length;
- context->context_length = offset;
- bool ret = apply_lookup (APPLY_ARG,
- inputCount,
- lookupCount, lookupRecord,
- lookup_context.funcs.apply);
- context->context_length = old_context_length;
- return ret;
+ hb_apply_context_t new_context = *context;
+ return match_backtrack (context,
+ backtrackCount, backtrack,
+ lookup_context.funcs.match, lookup_context.match_data[0])
+ && match_input (context,
+ inputCount, input,
+ lookup_context.funcs.match, lookup_context.match_data[1],
+ &new_context.context_length)
+ && match_lookahead (context,
+ lookaheadCount, lookahead,
+ lookup_context.funcs.match, lookup_context.match_data[2],
+ new_context.context_length)
+ && apply_lookup (&new_context,
+ inputCount,
+ lookupCount, lookupRecord,
+ lookup_context.funcs.apply);
}
struct ChainRule
friend struct ChainRuleSet;
private:
- inline bool apply (APPLY_ARG_DEF, ChainContextLookupContext &lookup_context) const
+ inline bool apply (hb_apply_context_t *context, ChainContextLookupContext &lookup_context) const
{
TRACE_APPLY ();
const HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack);
const ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input);
const ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
- return chain_context_lookup (APPLY_ARG,
+ return chain_context_lookup (context,
backtrack.len, backtrack.array(),
input.len, input.array(),
lookahead.len, lookahead.array(),
public:
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE (backtrack)) return false;
+ if (!backtrack.sanitize (context)) return false;
HeadlessArrayOf<USHORT> &input = StructAfter<HeadlessArrayOf<USHORT> > (backtrack);
- if (!SANITIZE (input)) return false;
+ if (!input.sanitize (context)) return false;
ArrayOf<USHORT> &lookahead = StructAfter<ArrayOf<USHORT> > (input);
- if (!SANITIZE (lookahead)) return false;
+ if (!lookahead.sanitize (context)) return false;
ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
- return SANITIZE (lookup);
+ return lookup.sanitize (context);
}
private:
ArrayOf<LookupRecord>
lookupX; /* Array of LookupRecords--in
* design order) */
+ public:
+ DEFINE_SIZE_STATIC (8);
};
-ASSERT_SIZE (ChainRule, 8);
struct ChainRuleSet
{
- inline bool apply (APPLY_ARG_DEF, ChainContextLookupContext &lookup_context) const
+ inline bool apply (hb_apply_context_t *context, ChainContextLookupContext &lookup_context) const
{
TRACE_APPLY ();
unsigned int num_rules = rule.len;
for (unsigned int i = 0; i < num_rules; i++)
{
- if ((this+rule[i]).apply (APPLY_ARG, lookup_context))
+ if ((this+rule[i]).apply (context, lookup_context))
return true;
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, rule);
+ return rule.sanitize (context, this);
}
private:
OffsetArrayOf<ChainRule>
rule; /* Array of ChainRule tables
* ordered by preference */
+ public:
+ DEFINE_SIZE_STATIC (2);
};
-ASSERT_SIZE (ChainRuleSet, 2);
struct ChainContextFormat1
{
friend struct ChainContext;
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
unsigned int index = (this+coverage) (IN_CURGLYPH ());
{match_glyph, apply_func},
{NULL, NULL, NULL}
};
- return rule_set.apply (APPLY_ARG, lookup_context);
+ return rule_set.apply (context, lookup_context);
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, coverage)
- && SANITIZE_WITH_BASE (this, ruleSet);
+ return coverage.sanitize (context, this)
+ && ruleSet.sanitize (context, this);
}
private:
OffsetArrayOf<ChainRuleSet>
ruleSet; /* Array of ChainRuleSet tables
* ordered by Coverage Index */
+ public:
+ DEFINE_SIZE_STATIC (6);
};
-ASSERT_SIZE (ChainContextFormat1, 6);
struct ChainContextFormat2
{
friend struct ChainContext;
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
unsigned int index = (this+coverage) (IN_CURGLYPH ());
CharP(&input_class_def),
CharP(&lookahead_class_def)}
};
- return rule_set.apply (APPLY_ARG, lookup_context);
+ return rule_set.apply (context, lookup_context);
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_WITH_BASE (this, coverage)
- && SANITIZE_WITH_BASE (this, backtrackClassDef)
- && SANITIZE_WITH_BASE (this, inputClassDef)
- && SANITIZE_WITH_BASE (this, lookaheadClassDef)
- && SANITIZE_WITH_BASE (this, ruleSet);
+ return coverage.sanitize (context, this)
+ && backtrackClassDef.sanitize (context, this)
+ && inputClassDef.sanitize (context, this)
+ && lookaheadClassDef.sanitize (context, this)
+ && ruleSet.sanitize (context, this);
}
private:
OffsetArrayOf<ChainRuleSet>
ruleSet; /* Array of ChainRuleSet tables
* ordered by class */
+ public:
+ DEFINE_SIZE_STATIC (12);
};
-ASSERT_SIZE (ChainContextFormat2, 12);
struct ChainContextFormat3
{
private:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
const OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack);
{match_coverage, apply_func},
{CharP(this), CharP(this), CharP(this)}
};
- return chain_context_lookup (APPLY_ARG,
+ return chain_context_lookup (context,
backtrack.len, (const USHORT *) backtrack.array(),
input.len, (const USHORT *) input.array() + 1,
lookahead.len, (const USHORT *) lookahead.array(),
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE_WITH_BASE (this, backtrack)) return false;
+ if (!backtrack.sanitize (context, this)) return false;
OffsetArrayOf<Coverage> &input = StructAfter<OffsetArrayOf<Coverage> > (backtrack);
- if (!SANITIZE_WITH_BASE (this, input)) return false;
+ if (!input.sanitize (context, this)) return false;
OffsetArrayOf<Coverage> &lookahead = StructAfter<OffsetArrayOf<Coverage> > (input);
- if (!SANITIZE_WITH_BASE (this, lookahead)) return false;
+ if (!lookahead.sanitize (context, this)) return false;
ArrayOf<LookupRecord> &lookup = StructAfter<ArrayOf<LookupRecord> > (lookahead);
- return SANITIZE (lookup);
+ return lookup.sanitize (context);
}
private:
ArrayOf<LookupRecord>
lookupX; /* Array of LookupRecords--in
* design order) */
+ public:
+ DEFINE_SIZE_STATIC (10);
};
-ASSERT_SIZE (ChainContextFormat3, 10);
struct ChainContext
{
protected:
- inline bool apply (APPLY_ARG_DEF, apply_lookup_func_t apply_func) const
+ inline bool apply (hb_apply_context_t *context, apply_lookup_func_t apply_func) const
{
TRACE_APPLY ();
switch (u.format) {
- case 1: return u.format1->apply (APPLY_ARG, apply_func);
- case 2: return u.format2->apply (APPLY_ARG, apply_func);
- case 3: return u.format3->apply (APPLY_ARG, apply_func);
+ case 1: return u.format1->apply (context, apply_func);
+ case 2: return u.format2->apply (context, apply_func);
+ case 3: return u.format3->apply (context, apply_func);
default:return false;
}
}
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE (u.format)) return false;
+ if (!u.format.sanitize (context)) return false;
switch (u.format) {
case 1: return u.format1->sanitize (context);
case 2: return u.format2->sanitize (context);
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE_SELF ();
+ return context->check_struct (this);
}
private:
* extension subtable). */
ULONG extensionOffset; /* Offset to the extension subtable,
* of lookup type subtable. */
+ public:
+ DEFINE_SIZE_STATIC (8);
};
-ASSERT_SIZE (ExtensionFormat1, 8);
struct Extension
{
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- if (!SANITIZE (u.format)) return false;
+ if (!u.format.sanitize (context)) return false;
switch (u.format) {
case 1: return u.format1->sanitize (context);
default:return true;
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
- return SANITIZE (version) && likely (version.major == 1)
- && SANITIZE_WITH_BASE (this, scriptList)
- && SANITIZE_WITH_BASE (this, featureList)
- && SANITIZE_WITH_BASE (this, lookupList);
+ return version.sanitize (context) && likely (version.major == 1)
+ && scriptList.sanitize (context, this)
+ && featureList.sanitize (context, this)
+ && lookupList.sanitize (context, this);
}
protected:
featureList; /* FeatureList table */
OffsetTo<LookupList>
lookupList; /* LookupList table */
+ public:
+ DEFINE_SIZE_STATIC (10);
};
-ASSERT_SIZE (GSUBGPOS, 10);
#endif /* HB_OT_LAYOUT_GSUBGPOS_PRIVATE_HH */