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[GSUB] Shuffle

This commit is contained in:
Behdad Esfahbod 2009-05-08 18:45:53 -04:00
parent a83e08f872
commit f702295103
1 changed files with 90 additions and 88 deletions
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178
src/hb-ot-layout-gsub-private.h
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@ -650,6 +650,33 @@ struct ContextSubstFormat1 {
};
ASSERT_SIZE (ContextSubstFormat1, 6);
struct SubClassRule {
/* TODO */
private:
USHORT glyphCount; /* Total number of classes
* specified for the context in the
* rule--includes the first class */
USHORT substCount; /* Number of SubstLookupRecords */
USHORT klass[]; /* Array of classes--beginning with the
* second class--to be matched to the
* input glyph class sequence */
SubstLookupRecord substLookupRecord[];/* Array of SubstLookupRecords--in
* design order */
};
DEFINE_NULL_ASSERT_SIZE (SubClassRule, 4);
struct SubClassSet {
/* TODO */
private:
USHORT subClassRuleCnt; /* Number of SubClassRule tables */
Offset subClassRule[]; /* Array of offsets to SubClassRule
* tables--from beginning of
* SubClassSet--ordered by preference */
};
DEFINE_NULL_ASSERT_SIZE (SubClassSet, 2);
struct ContextSubstFormat2 {
friend struct ContextSubst;
@ -674,33 +701,6 @@ struct ContextSubstFormat2 {
};
ASSERT_SIZE (ContextSubstFormat2, 8);
struct SubClassSet {
/* TODO */
private:
USHORT subClassRuleCnt; /* Number of SubClassRule tables */
Offset subClassRule[]; /* Array of offsets to SubClassRule
* tables--from beginning of
* SubClassSet--ordered by preference */
};
DEFINE_NULL_ASSERT_SIZE (SubClassSet, 2);
struct SubClassRule {
/* TODO */
private:
USHORT glyphCount; /* Total number of classes
* specified for the context in the
* rule--includes the first class */
USHORT substCount; /* Number of SubstLookupRecords */
USHORT klass[]; /* Array of classes--beginning with the
* second class--to be matched to the
* input glyph class sequence */
SubstLookupRecord substLookupRecord[];/* Array of SubstLookupRecords--in
* design order */
};
DEFINE_NULL_ASSERT_SIZE (SubClassRule, 4);
struct ContextSubstFormat3 {
friend struct ContextSubst;
@ -760,35 +760,6 @@ struct ContextSubst {
DEFINE_NULL (ContextSubst, 2);
struct ChainContextSubstFormat1 {
/* TODO */
private:
USHORT substFormat; /* Format identifier--format = 1 */
Offset coverage; /* Offset to Coverage table--from
* beginning of Substitution table */
USHORT chainSubRuleSetCount; /* Number of ChainSubRuleSet
* tables--must equal GlyphCount in
* Coverage table */
Offset chainSubRuleSet[]; /* Array of offsets to ChainSubRuleSet
* tables--from beginning of
* Substitution table--ordered by
* Coverage Index */
};
ASSERT_SIZE (ChainContextSubstFormat1, 6);
struct ChainSubRuleSet {
/* TODO */
private:
USHORT chainSubRuleCount; /* Number of ChainSubRule tables */
Offset chainSubRule[]; /* Array of offsets to ChainSubRule
* tables--from beginning of
* ChainSubRuleSet table--ordered
* by preference */
};
DEFINE_NULL_ASSERT_SIZE (ChainSubRuleSet, 2);
struct ChainSubRule {
/* TODO */
@ -815,45 +786,34 @@ struct ChainSubRule {
};
DEFINE_NULL_ASSERT_SIZE (ChainSubRule, 8);
struct ChainContextSubstFormat2 {
struct ChainSubRuleSet {
/* TODO */
private:
USHORT substFormat; /* Format identifier--format = 2 */
USHORT chainSubRuleCount; /* Number of ChainSubRule tables */
Offset chainSubRule[]; /* Array of offsets to ChainSubRule
* tables--from beginning of
* ChainSubRuleSet table--ordered
* by preference */
};
DEFINE_NULL_ASSERT_SIZE (ChainSubRuleSet, 2);
struct ChainContextSubstFormat1 {
/* TODO */
private:
USHORT substFormat; /* Format identifier--format = 1 */
Offset coverage; /* Offset to Coverage table--from
* beginning of Substitution table */
Offset backtrackClassDef; /* Offset to glyph ClassDef table
* containing backtrack sequence
* data--from beginning of Substitution
* table */
Offset inputClassDef; /* Offset to glyph ClassDef
* table containing input sequence
* data--from beginning of Substitution
* table */
Offset lookaheadClassDef; /* Offset to glyph ClassDef table
* containing lookahead sequence
* data--from beginning of Substitution
* table */
USHORT chainSubClassSetCnt; /* Number of ChainSubClassSet tables */
Offset chainSubClassSet[]; /* Array of offsets to ChainSubClassSet
USHORT chainSubRuleSetCount; /* Number of ChainSubRuleSet
* tables--must equal GlyphCount in
* Coverage table */
Offset chainSubRuleSet[]; /* Array of offsets to ChainSubRuleSet
* tables--from beginning of
* Substitution table--ordered by input
* class--may be NULL */
* Substitution table--ordered by
* Coverage Index */
};
ASSERT_SIZE (ChainContextSubstFormat2, 12);
struct ChainSubClassSet {
/* TODO */
private:
USHORT chainSubClassRuleCnt; /* Number of ChainSubClassRule tables */
Offset chainSubClassRule[]; /* Array of offsets
* to ChainSubClassRule
* tables--from beginning of
* ChainSubClassSet--ordered by
* preference */
};
DEFINE_NULL_ASSERT_SIZE (ChainSubClassSet, 2);
ASSERT_SIZE (ChainContextSubstFormat1, 6);
struct ChainSubClassRule {
/* TODO */
@ -882,6 +842,46 @@ struct ChainSubClassRule {
};
DEFINE_NULL_ASSERT_SIZE (ChainSubClassRule, 8);
struct ChainSubClassSet {
/* TODO */
private:
USHORT chainSubClassRuleCnt; /* Number of ChainSubClassRule tables */
Offset chainSubClassRule[]; /* Array of offsets
* to ChainSubClassRule
* tables--from beginning of
* ChainSubClassSet--ordered by
* preference */
};
DEFINE_NULL_ASSERT_SIZE (ChainSubClassSet, 2);
struct ChainContextSubstFormat2 {
/* TODO */
private:
USHORT substFormat; /* Format identifier--format = 2 */
Offset coverage; /* Offset to Coverage table--from
* beginning of Substitution table */
Offset backtrackClassDef; /* Offset to glyph ClassDef table
* containing backtrack sequence
* data--from beginning of Substitution
* table */
Offset inputClassDef; /* Offset to glyph ClassDef
* table containing input sequence
* data--from beginning of Substitution
* table */
Offset lookaheadClassDef; /* Offset to glyph ClassDef table
* containing lookahead sequence
* data--from beginning of Substitution
* table */
USHORT chainSubClassSetCnt; /* Number of ChainSubClassSet tables */
Offset chainSubClassSet[]; /* Array of offsets to ChainSubClassSet
* tables--from beginning of
* Substitution table--ordered by input
* class--may be NULL */
};
ASSERT_SIZE (ChainContextSubstFormat2, 12);
struct ChainContextSubstFormat3 {
/* TODO */
@ -1067,6 +1067,8 @@ struct SubstLookupSubTable {
/* Out-of-class implementation for methods chaining */
inline bool ExtensionSubstFormat1::substitute (SUBTABLE_SUBSTITUTE_ARGS_DEF) const {
/* XXX either check in sanitize or here that the lookuptype is not 7 again,
* or we can loop indefinitely. */
return (*(SubstLookupSubTable *)(((char *) this) + extensionOffset)).substitute (SUBTABLE_SUBSTITUTE_ARGS,
get_type ());
}