diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh | 844 |
1 files changed, 494 insertions, 350 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh b/thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh index 31da498652..5acd228b83 100644 --- a/thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh +++ b/thirdparty/harfbuzz/src/hb-ot-layout-gsubgpos.hh @@ -150,7 +150,7 @@ struct hb_closure_context_t : bool pop_cur_done_glyphs () { - if (active_glyphs_stack.length < 1) + if (!active_glyphs_stack) return false; active_glyphs_stack.pop (); @@ -409,7 +409,7 @@ struct hb_ot_apply_context_t : match_func (nullptr), match_data (nullptr) {} - typedef bool (*match_func_t) (hb_glyph_info_t &info, const HBUINT16 &value, const void *data); + typedef bool (*match_func_t) (hb_glyph_info_t &info, unsigned value, const void *data); void set_ignore_zwnj (bool ignore_zwnj_) { ignore_zwnj = ignore_zwnj_; } void set_ignore_zwj (bool ignore_zwj_) { ignore_zwj = ignore_zwj_; } @@ -428,14 +428,14 @@ struct hb_ot_apply_context_t : }; may_match_t may_match (hb_glyph_info_t &info, - const HBUINT16 *glyph_data) const + hb_codepoint_t glyph_data) const { if (!(info.mask & mask) || (syllable && syllable != info.syllable ())) return MATCH_NO; if (match_func) - return match_func (info, *glyph_data, match_data) ? MATCH_YES : MATCH_NO; + return match_func (info, glyph_data, match_data) ? MATCH_YES : MATCH_NO; return MATCH_MAYBE; } @@ -476,7 +476,10 @@ struct hb_ot_apply_context_t : void init (hb_ot_apply_context_t *c_, bool context_match = false) { c = c_; - match_glyph_data = nullptr; + match_glyph_data16 = nullptr; +#ifndef HB_NO_BEYOND_64K + match_glyph_data24 = nullptr; +#endif matcher.set_match_func (nullptr, nullptr); matcher.set_lookup_props (c->lookup_props); /* Ignore ZWNJ if we are matching GPOS, or matching GSUB context and asked to. */ @@ -491,12 +494,24 @@ struct hb_ot_apply_context_t : matcher.set_lookup_props (lookup_props); } void set_match_func (matcher_t::match_func_t match_func_, - const void *match_data_, - const HBUINT16 glyph_data[]) + const void *match_data_) { matcher.set_match_func (match_func_, match_data_); - match_glyph_data = glyph_data; } + void set_glyph_data (const HBUINT16 glyph_data[]) + { + match_glyph_data16 = glyph_data; +#ifndef HB_NO_BEYOND_64K + match_glyph_data24 = nullptr; +#endif + } +#ifndef HB_NO_BEYOND_64K + void set_glyph_data (const HBUINT24 glyph_data[]) + { + match_glyph_data16 = nullptr; + match_glyph_data24 = glyph_data; + } +#endif void reset (unsigned int start_index_, unsigned int num_items_) @@ -510,7 +525,7 @@ struct hb_ot_apply_context_t : void reject () { num_items++; - if (match_glyph_data) match_glyph_data--; + backup_glyph_data (); } matcher_t::may_skip_t @@ -529,13 +544,13 @@ struct hb_ot_apply_context_t : if (unlikely (skip == matcher_t::SKIP_YES)) continue; - matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data); + matcher_t::may_match_t match = matcher.may_match (info, get_glyph_data ()); if (match == matcher_t::MATCH_YES || (match == matcher_t::MATCH_MAYBE && skip == matcher_t::SKIP_NO)) { num_items--; - if (match_glyph_data) match_glyph_data++; + advance_glyph_data (); return true; } @@ -562,13 +577,13 @@ struct hb_ot_apply_context_t : if (unlikely (skip == matcher_t::SKIP_YES)) continue; - matcher_t::may_match_t match = matcher.may_match (info, match_glyph_data); + matcher_t::may_match_t match = matcher.may_match (info, get_glyph_data ()); if (match == matcher_t::MATCH_YES || (match == matcher_t::MATCH_MAYBE && skip == matcher_t::SKIP_NO)) { num_items--; - if (match_glyph_data) match_glyph_data++; + advance_glyph_data (); return true; } @@ -584,11 +599,43 @@ struct hb_ot_apply_context_t : return false; } + hb_codepoint_t + get_glyph_data () + { + if (match_glyph_data16) return *match_glyph_data16; +#ifndef HB_NO_BEYOND_64K + else + if (match_glyph_data24) return *match_glyph_data24; +#endif + return 0; + } + void + advance_glyph_data () + { + if (match_glyph_data16) match_glyph_data16++; +#ifndef HB_NO_BEYOND_64K + else + if (match_glyph_data24) match_glyph_data24++; +#endif + } + void + backup_glyph_data () + { + if (match_glyph_data16) match_glyph_data16--; +#ifndef HB_NO_BEYOND_64K + else + if (match_glyph_data24) match_glyph_data24--; +#endif + } + unsigned int idx; protected: hb_ot_apply_context_t *c; matcher_t matcher; - const HBUINT16 *match_glyph_data; + const HBUINT16 *match_glyph_data16; +#ifndef HB_NO_BEYOND_64K + const HBUINT24 *match_glyph_data24; +#endif unsigned int num_items; unsigned int end; @@ -941,10 +988,10 @@ struct hb_accelerate_subtables_context_t : }; -typedef bool (*intersects_func_t) (const hb_set_t *glyphs, const HBUINT16 &value, const void *data); +typedef bool (*intersects_func_t) (const hb_set_t *glyphs, unsigned value, const void *data); typedef void (*intersected_glyphs_func_t) (const hb_set_t *glyphs, const void *data, unsigned value, hb_set_t *intersected_glyphs); -typedef void (*collect_glyphs_func_t) (hb_set_t *glyphs, const HBUINT16 &value, const void *data); -typedef bool (*match_func_t) (hb_glyph_info_t &info, const HBUINT16 &value, const void *data); +typedef void (*collect_glyphs_func_t) (hb_set_t *glyphs, unsigned value, const void *data); +typedef bool (*match_func_t) (hb_glyph_info_t &info, unsigned value, const void *data); struct ContextClosureFuncs { @@ -965,18 +1012,19 @@ struct ChainContextApplyFuncs }; -static inline bool intersects_glyph (const hb_set_t *glyphs, const HBUINT16 &value, const void *data HB_UNUSED) +static inline bool intersects_glyph (const hb_set_t *glyphs, unsigned value, const void *data HB_UNUSED) { return glyphs->has (value); } -static inline bool intersects_class (const hb_set_t *glyphs, const HBUINT16 &value, const void *data) +static inline bool intersects_class (const hb_set_t *glyphs, unsigned value, const void *data) { const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); return class_def.intersects_class (glyphs, value); } -static inline bool intersects_coverage (const hb_set_t *glyphs, const HBUINT16 &value, const void *data) +static inline bool intersects_coverage (const hb_set_t *glyphs, unsigned value, const void *data) { - const Offset16To<Coverage> &coverage = (const Offset16To<Coverage>&)value; + Offset16To<Coverage> coverage; + coverage = value; return (data+coverage).intersects (glyphs); } @@ -995,60 +1043,63 @@ static inline void intersected_coverage_glyphs (const hb_set_t *glyphs, const vo { Offset16To<Coverage> coverage; coverage = value; - (data+coverage).intersected_coverage_glyphs (glyphs, intersected_glyphs); + (data+coverage).intersect_set (*glyphs, *intersected_glyphs); } +template <typename HBUINT> static inline bool array_is_subset_of (const hb_set_t *glyphs, unsigned int count, - const HBUINT16 values[], + const HBUINT values[], intersects_func_t intersects_func, const void *intersects_data) { - for (const HBUINT16 &_ : + hb_iter (values, count)) + for (const auto &_ : + hb_iter (values, count)) if (!intersects_func (glyphs, _, intersects_data)) return false; return true; } -static inline void collect_glyph (hb_set_t *glyphs, const HBUINT16 &value, const void *data HB_UNUSED) +static inline void collect_glyph (hb_set_t *glyphs, unsigned value, const void *data HB_UNUSED) { glyphs->add (value); } -static inline void collect_class (hb_set_t *glyphs, const HBUINT16 &value, const void *data) +static inline void collect_class (hb_set_t *glyphs, unsigned value, const void *data) { const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); class_def.collect_class (glyphs, value); } -static inline void collect_coverage (hb_set_t *glyphs, const HBUINT16 &value, const void *data) +static inline void collect_coverage (hb_set_t *glyphs, unsigned value, const void *data) { - const Offset16To<Coverage> &coverage = (const Offset16To<Coverage>&)value; + Offset16To<Coverage> coverage; + coverage = value; (data+coverage).collect_coverage (glyphs); } +template <typename HBUINT> static inline void collect_array (hb_collect_glyphs_context_t *c HB_UNUSED, hb_set_t *glyphs, unsigned int count, - const HBUINT16 values[], + const HBUINT values[], collect_glyphs_func_t collect_func, const void *collect_data) { return + hb_iter (values, count) - | hb_apply ([&] (const HBUINT16 &_) { collect_func (glyphs, _, collect_data); }) + | hb_apply ([&] (const HBUINT &_) { collect_func (glyphs, _, collect_data); }) ; } -static inline bool match_glyph (hb_glyph_info_t &info, const HBUINT16 &value, const void *data HB_UNUSED) +static inline bool match_glyph (hb_glyph_info_t &info, unsigned value, const void *data HB_UNUSED) { return info.codepoint == value; } -static inline bool match_class (hb_glyph_info_t &info, const HBUINT16 &value, const void *data) +static inline bool match_class (hb_glyph_info_t &info, unsigned value, const void *data) { const ClassDef &class_def = *reinterpret_cast<const ClassDef *>(data); return class_def.get_class (info.codepoint) == value; } -static inline bool match_class_cached (hb_glyph_info_t &info, const HBUINT16 &value, const void *data) +static inline bool match_class_cached (hb_glyph_info_t &info, unsigned value, const void *data) { unsigned klass = info.syllable(); if (klass < 255) @@ -1059,15 +1110,17 @@ static inline bool match_class_cached (hb_glyph_info_t &info, const HBUINT16 &va info.syllable() = klass; return klass == value; } -static inline bool match_coverage (hb_glyph_info_t &info, const HBUINT16 &value, const void *data) +static inline bool match_coverage (hb_glyph_info_t &info, unsigned value, const void *data) { - const Offset16To<Coverage> &coverage = (const Offset16To<Coverage>&)value; + Offset16To<Coverage> coverage; + coverage = value; return (data+coverage).get_coverage (info.codepoint) != NOT_COVERED; } +template <typename HBUINT> static inline bool would_match_input (hb_would_apply_context_t *c, unsigned int count, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ match_func_t match_func, const void *match_data) { @@ -1084,9 +1137,10 @@ static inline bool would_match_input (hb_would_apply_context_t *c, return true; } +template <typename HBUINT> static inline bool match_input (hb_ot_apply_context_t *c, unsigned int count, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ match_func_t match_func, const void *match_data, unsigned int *end_position, @@ -1101,7 +1155,8 @@ static inline bool match_input (hb_ot_apply_context_t *c, hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; skippy_iter.reset (buffer->idx, count - 1); - skippy_iter.set_match_func (match_func, match_data, input); + skippy_iter.set_match_func (match_func, match_data); + skippy_iter.set_glyph_data (input); /* * This is perhaps the trickiest part of OpenType... Remarks: @@ -1322,9 +1377,10 @@ static inline bool ligate_input (hb_ot_apply_context_t *c, return_trace (true); } +template <typename HBUINT> static inline bool match_backtrack (hb_ot_apply_context_t *c, unsigned int count, - const HBUINT16 backtrack[], + const HBUINT backtrack[], match_func_t match_func, const void *match_data, unsigned int *match_start) @@ -1333,7 +1389,8 @@ static inline bool match_backtrack (hb_ot_apply_context_t *c, hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_context; skippy_iter.reset (c->buffer->backtrack_len (), count); - skippy_iter.set_match_func (match_func, match_data, backtrack); + skippy_iter.set_match_func (match_func, match_data); + skippy_iter.set_glyph_data (backtrack); for (unsigned int i = 0; i < count; i++) { @@ -1349,9 +1406,10 @@ static inline bool match_backtrack (hb_ot_apply_context_t *c, return_trace (true); } +template <typename HBUINT> static inline bool match_lookahead (hb_ot_apply_context_t *c, unsigned int count, - const HBUINT16 lookahead[], + const HBUINT lookahead[], match_func_t match_func, const void *match_data, unsigned int start_index, @@ -1361,7 +1419,8 @@ static inline bool match_lookahead (hb_ot_apply_context_t *c, hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_context; skippy_iter.reset (start_index - 1, count); - skippy_iter.set_match_func (match_func, match_data, lookahead); + skippy_iter.set_match_func (match_func, match_data); + skippy_iter.set_glyph_data (lookahead); for (unsigned int i = 0; i < count; i++) { @@ -1425,8 +1484,9 @@ static unsigned serialize_lookuprecord_array (hb_serialize_context_t *c, enum ContextFormat { SimpleContext = 1, ClassBasedContext = 2, CoverageBasedContext = 3 }; +template <typename HBUINT> static void context_closure_recurse_lookups (hb_closure_context_t *c, - unsigned inputCount, const HBUINT16 input[], + unsigned inputCount, const HBUINT input[], unsigned lookupCount, const LookupRecord lookupRecord[] /* Array of LookupRecords--in design order */, unsigned value, @@ -1645,9 +1705,10 @@ struct ContextApplyLookupContext const void *match_data; }; +template <typename HBUINT> static inline bool context_intersects (const hb_set_t *glyphs, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ ContextClosureLookupContext &lookup_context) { return array_is_subset_of (glyphs, @@ -1655,9 +1716,10 @@ static inline bool context_intersects (const hb_set_t *glyphs, lookup_context.funcs.intersects, lookup_context.intersects_data); } +template <typename HBUINT> static inline void context_closure_lookup (hb_closure_context_t *c, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookupCount, const LookupRecord lookupRecord[], unsigned value, /* Index of first glyph in Coverage or Class value in ClassDef table */ @@ -1675,9 +1737,10 @@ static inline void context_closure_lookup (hb_closure_context_t *c, lookup_context.funcs.intersected_glyphs); } +template <typename HBUINT> static inline void context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookupCount, const LookupRecord lookupRecord[], ContextCollectGlyphsLookupContext &lookup_context) @@ -1689,9 +1752,10 @@ static inline void context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c lookupCount, lookupRecord); } +template <typename HBUINT> static inline bool context_would_apply_lookup (hb_would_apply_context_t *c, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookupCount HB_UNUSED, const LookupRecord lookupRecord[] HB_UNUSED, ContextApplyLookupContext &lookup_context) @@ -1700,9 +1764,11 @@ static inline bool context_would_apply_lookup (hb_would_apply_context_t *c, inputCount, input, lookup_context.funcs.match, lookup_context.match_data); } + +template <typename HBUINT> static inline bool context_apply_lookup (hb_ot_apply_context_t *c, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookupCount, const LookupRecord lookupRecord[], ContextApplyLookupContext &lookup_context) @@ -1728,6 +1794,7 @@ static inline bool context_apply_lookup (hb_ot_apply_context_t *c, } } +template <typename Types> struct Rule { bool intersects (const hb_set_t *glyphs, ContextClosureLookupContext &lookup_context) const @@ -1741,8 +1808,8 @@ struct Rule { if (unlikely (c->lookup_limit_exceeded ())) return; - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array ((inputCount ? inputCount - 1 : 0))); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array ((inputCount ? inputCount - 1 : 0))); context_closure_lookup (c, inputCount, inputZ.arrayZ, lookupCount, lookupRecord.arrayZ, @@ -1755,16 +1822,16 @@ struct Rule if (unlikely (c->lookup_limit_exceeded ())) return; if (!intersects (c->glyphs, lookup_context)) return; - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array (inputCount ? inputCount - 1 : 0)); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array (inputCount ? inputCount - 1 : 0)); recurse_lookups (c, lookupCount, lookupRecord.arrayZ); } void collect_glyphs (hb_collect_glyphs_context_t *c, ContextCollectGlyphsLookupContext &lookup_context) const { - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array (inputCount ? inputCount - 1 : 0)); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array (inputCount ? inputCount - 1 : 0)); context_collect_glyphs_lookup (c, inputCount, inputZ.arrayZ, lookupCount, lookupRecord.arrayZ, @@ -1774,8 +1841,8 @@ struct Rule bool would_apply (hb_would_apply_context_t *c, ContextApplyLookupContext &lookup_context) const { - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array (inputCount ? inputCount - 1 : 0)); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array (inputCount ? inputCount - 1 : 0)); return context_would_apply_lookup (c, inputCount, inputZ.arrayZ, lookupCount, lookupRecord.arrayZ, @@ -1786,8 +1853,8 @@ struct Rule ContextApplyLookupContext &lookup_context) const { TRACE_APPLY (this); - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array (inputCount ? inputCount - 1 : 0)); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array (inputCount ? inputCount - 1 : 0)); return_trace (context_apply_lookup (c, inputCount, inputZ.arrayZ, lookupCount, lookupRecord.arrayZ, lookup_context)); } @@ -1800,7 +1867,7 @@ struct Rule if (unlikely (!c->extend_min (out))) return_trace (false); out->inputCount = inputCount; - const hb_array_t<const HBUINT16> input = inputZ.as_array (inputCount - 1); + const auto input = inputZ.as_array (inputCount - 1); for (const auto org : input) { HBUINT16 d; @@ -1808,8 +1875,8 @@ struct Rule c->copy (d); } - const UnsizedArrayOf<LookupRecord> &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> - (inputZ.as_array ((inputCount ? inputCount - 1 : 0))); + const auto &lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> + (inputZ.as_array ((inputCount ? inputCount - 1 : 0))); unsigned count = serialize_lookuprecord_array (c, lookupRecord.as_array (lookupCount), lookup_map); return_trace (c->check_assign (out->lookupCount, count, HB_SERIALIZE_ERROR_INT_OVERFLOW)); @@ -1821,7 +1888,7 @@ struct Rule { TRACE_SUBSET (this); if (unlikely (!inputCount)) return_trace (false); - const hb_array_t<const HBUINT16> input = inputZ.as_array (inputCount - 1); + const auto input = inputZ.as_array (inputCount - 1); const hb_map_t *mapping = klass_map == nullptr ? c->plan->glyph_map : klass_map; if (!hb_all (input, mapping)) return_trace (false); @@ -1844,7 +1911,7 @@ struct Rule * glyph sequence--includes the first * glyph */ HBUINT16 lookupCount; /* Number of LookupRecords */ - UnsizedArrayOf<HBUINT16> + UnsizedArrayOf<typename Types::HBUINT> inputZ; /* Array of match inputs--start with * second glyph */ /*UnsizedArrayOf<LookupRecord> @@ -1854,8 +1921,11 @@ struct Rule DEFINE_SIZE_ARRAY (4, inputZ); }; +template <typename Types> struct RuleSet { + using Rule = OT::Rule<Types>; + bool intersects (const hb_set_t *glyphs, ContextClosureLookupContext &lookup_context) const { @@ -1968,8 +2038,11 @@ struct RuleSet }; -struct ContextFormat1 +template <typename Types> +struct ContextFormat1_4 { + using RuleSet = OT::RuleSet<Types>; + bool intersects (const hb_set_t *glyphs) const { struct ContextClosureLookupContext lookup_context = { @@ -1993,9 +2066,8 @@ struct ContextFormat1 void closure (hb_closure_context_t *c) const { - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), - cur_active_glyphs); + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); struct ContextClosureLookupContext lookup_context = { {intersects_glyph, intersected_glyph}, @@ -2106,19 +2178,22 @@ struct ContextFormat1 protected: HBUINT16 format; /* Format identifier--format = 1 */ - Offset16To<Coverage> + typename Types::template OffsetTo<Coverage> coverage; /* Offset to Coverage table--from * beginning of table */ - Array16OfOffset16To<RuleSet> + Array16Of<typename Types::template OffsetTo<RuleSet>> ruleSet; /* Array of RuleSet tables * ordered by Coverage Index */ public: - DEFINE_SIZE_ARRAY (6, ruleSet); + DEFINE_SIZE_ARRAY (2 + 2 * Types::size, ruleSet); }; -struct ContextFormat2 +template <typename Types> +struct ContextFormat2_5 { + using RuleSet = OT::RuleSet<SmallTypes>; + bool intersects (const hb_set_t *glyphs) const { if (!(this+coverage).intersects (glyphs)) @@ -2133,7 +2208,7 @@ struct ContextFormat2 }; hb_set_t retained_coverage_glyphs; - (this+coverage).intersected_coverage_glyphs (glyphs, &retained_coverage_glyphs); + (this+coverage).intersect_set (*glyphs, retained_coverage_glyphs); hb_set_t coverage_glyph_classes; class_def.intersected_classes (&retained_coverage_glyphs, &coverage_glyph_classes); @@ -2159,8 +2234,8 @@ struct ContextFormat2 if (!(this+coverage).intersects (c->glyphs)) return; - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); const ClassDef &class_def = this+classDef; @@ -2175,7 +2250,7 @@ struct ContextFormat2 | hb_filter ([&] (unsigned _) { return class_def.intersects_class (&c->parent_active_glyphs (), _); }, hb_first) - | hb_apply ([&] (const hb_pair_t<unsigned, const Offset16To<RuleSet>&> _) + | hb_apply ([&] (const hb_pair_t<unsigned, const typename Types::template OffsetTo<RuleSet>&> _) { const RuleSet& rule_set = this+_.second; rule_set.closure (c, _.first, lookup_context); @@ -2305,7 +2380,7 @@ struct ContextFormat2 const hb_set_t* glyphset = c->plan->glyphset_gsub (); hb_set_t retained_coverage_glyphs; - (this+coverage).intersected_coverage_glyphs (glyphset, &retained_coverage_glyphs); + (this+coverage).intersect_set (*glyphset, retained_coverage_glyphs); hb_set_t coverage_glyph_classes; (this+classDef).intersected_classes (&retained_coverage_glyphs, &coverage_glyph_classes); @@ -2351,22 +2426,24 @@ struct ContextFormat2 protected: HBUINT16 format; /* Format identifier--format = 2 */ - Offset16To<Coverage> + typename Types::template OffsetTo<Coverage> coverage; /* Offset to Coverage table--from * beginning of table */ - Offset16To<ClassDef> + typename Types::template OffsetTo<ClassDef> classDef; /* Offset to glyph ClassDef table--from * beginning of table */ - Array16OfOffset16To<RuleSet> + Array16Of<typename Types::template OffsetTo<RuleSet>> ruleSet; /* Array of RuleSet tables * ordered by class */ public: - DEFINE_SIZE_ARRAY (8, ruleSet); + DEFINE_SIZE_ARRAY (4 + 2 * Types::size, ruleSet); }; struct ContextFormat3 { + using RuleSet = OT::RuleSet<SmallTypes>; + bool intersects (const hb_set_t *glyphs) const { if (!(this+coverageZ[0]).intersects (glyphs)) @@ -2390,8 +2467,8 @@ struct ContextFormat3 if (!(this+coverageZ[0]).intersects (c->glyphs)) return; - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); @@ -2483,7 +2560,7 @@ struct ContextFormat3 if (!o->serialize_subset (c, offset, this)) return_trace (false); } - const UnsizedArrayOf<LookupRecord>& lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> (coverageZ.as_array (glyphCount)); + const auto& lookupRecord = StructAfter<UnsizedArrayOf<LookupRecord>> (coverageZ.as_array (glyphCount)); const hb_map_t *lookup_map = c->table_tag == HB_OT_TAG_GSUB ? c->plan->gsub_lookups : c->plan->gpos_lookups; @@ -2530,16 +2607,24 @@ struct Context case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...)); case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...)); case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 4: return_trace (c->dispatch (u.format4, std::forward<Ts> (ds)...)); + case 5: return_trace (c->dispatch (u.format5, std::forward<Ts> (ds)...)); +#endif default:return_trace (c->default_return_value ()); } } protected: union { - HBUINT16 format; /* Format identifier */ - ContextFormat1 format1; - ContextFormat2 format2; - ContextFormat3 format3; + HBUINT16 format; /* Format identifier */ + ContextFormat1_4<SmallTypes> format1; + ContextFormat2_5<SmallTypes> format2; + ContextFormat3 format3; +#ifndef HB_NO_BEYOND_64K + ContextFormat1_4<MediumTypes> format4; + ContextFormat2_5<MediumTypes> format5; +#endif } u; }; @@ -2565,13 +2650,14 @@ struct ChainContextApplyLookupContext const void *match_data[3]; }; +template <typename HBUINT> static inline bool chain_context_intersects (const hb_set_t *glyphs, unsigned int backtrackCount, - const HBUINT16 backtrack[], + const HBUINT backtrack[], unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookaheadCount, - const HBUINT16 lookahead[], + const HBUINT lookahead[], ChainContextClosureLookupContext &lookup_context) { return array_is_subset_of (glyphs, @@ -2585,13 +2671,14 @@ static inline bool chain_context_intersects (const hb_set_t *glyphs, lookup_context.funcs.intersects, lookup_context.intersects_data[2]); } +template <typename HBUINT> static inline void chain_context_closure_lookup (hb_closure_context_t *c, unsigned int backtrackCount, - const HBUINT16 backtrack[], + const HBUINT backtrack[], unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookaheadCount, - const HBUINT16 lookahead[], + const HBUINT lookahead[], unsigned int lookupCount, const LookupRecord lookupRecord[], unsigned value, @@ -2611,13 +2698,14 @@ static inline void chain_context_closure_lookup (hb_closure_context_t *c, lookup_context.funcs.intersected_glyphs); } +template <typename HBUINT> static inline void chain_context_collect_glyphs_lookup (hb_collect_glyphs_context_t *c, unsigned int backtrackCount, - const HBUINT16 backtrack[], + const HBUINT backtrack[], unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookaheadCount, - const HBUINT16 lookahead[], + const HBUINT lookahead[], unsigned int lookupCount, const LookupRecord lookupRecord[], ChainContextCollectGlyphsLookupContext &lookup_context) @@ -2635,13 +2723,14 @@ static inline void chain_context_collect_glyphs_lookup (hb_collect_glyphs_contex lookupCount, lookupRecord); } +template <typename HBUINT> static inline bool chain_context_would_apply_lookup (hb_would_apply_context_t *c, unsigned int backtrackCount, - const HBUINT16 backtrack[] HB_UNUSED, + const HBUINT backtrack[] HB_UNUSED, unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookaheadCount, - const HBUINT16 lookahead[] HB_UNUSED, + const HBUINT lookahead[] HB_UNUSED, unsigned int lookupCount HB_UNUSED, const LookupRecord lookupRecord[] HB_UNUSED, ChainContextApplyLookupContext &lookup_context) @@ -2652,13 +2741,14 @@ static inline bool chain_context_would_apply_lookup (hb_would_apply_context_t *c lookup_context.funcs.match[1], lookup_context.match_data[1]); } +template <typename HBUINT> static inline bool chain_context_apply_lookup (hb_ot_apply_context_t *c, unsigned int backtrackCount, - const HBUINT16 backtrack[], + const HBUINT backtrack[], unsigned int inputCount, /* Including the first glyph (not matched) */ - const HBUINT16 input[], /* Array of input values--start with second glyph */ + const HBUINT input[], /* Array of input values--start with second glyph */ unsigned int lookaheadCount, - const HBUINT16 lookahead[], + const HBUINT lookahead[], unsigned int lookupCount, const LookupRecord lookupRecord[], ChainContextApplyLookupContext &lookup_context) @@ -2697,12 +2787,13 @@ static inline bool chain_context_apply_lookup (hb_ot_apply_context_t *c, return true; } +template <typename Types> struct ChainRule { bool intersects (const hb_set_t *glyphs, ChainContextClosureLookupContext &lookup_context) const { - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); return chain_context_intersects (glyphs, backtrack.len, backtrack.arrayZ, input.lenP1, input.arrayZ, @@ -2715,9 +2806,9 @@ struct ChainRule { if (unlikely (c->lookup_limit_exceeded ())) return; - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); chain_context_closure_lookup (c, backtrack.len, backtrack.arrayZ, input.lenP1, input.arrayZ, @@ -2733,18 +2824,18 @@ struct ChainRule if (unlikely (c->lookup_limit_exceeded ())) return; if (!intersects (c->glyphs, lookup_context)) return; - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); recurse_lookups (c, lookup.len, lookup.arrayZ); } void collect_glyphs (hb_collect_glyphs_context_t *c, ChainContextCollectGlyphsLookupContext &lookup_context) const { - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); chain_context_collect_glyphs_lookup (c, backtrack.len, backtrack.arrayZ, input.lenP1, input.arrayZ, @@ -2756,9 +2847,9 @@ struct ChainRule bool would_apply (hb_would_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const { - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); return chain_context_would_apply_lookup (c, backtrack.len, backtrack.arrayZ, input.lenP1, input.arrayZ, @@ -2769,9 +2860,9 @@ struct ChainRule bool apply (hb_ot_apply_context_t *c, ChainContextApplyLookupContext &lookup_context) const { TRACE_APPLY (this); - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); return_trace (chain_context_apply_lookup (c, backtrack.len, backtrack.arrayZ, input.lenP1, input.arrayZ, @@ -2804,22 +2895,22 @@ struct ChainRule serialize_array (c, backtrack.len, + backtrack.iter () | hb_map (mapping)); - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (input_map) mapping = input_map; serialize_array (c, input.lenP1, + input.iter () | hb_map (mapping)); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); if (lookahead_map) mapping = lookahead_map; serialize_array (c, lookahead.len, + lookahead.iter () | hb_map (mapping)); - const Array16Of<LookupRecord> &lookupRecord = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); - HBUINT16* lookupCount = c->embed (&(lookupRecord.len)); + HBUINT16* lookupCount = c->embed (&(lookup.len)); if (!lookupCount) return_trace (false); - unsigned count = serialize_lookuprecord_array (c, lookupRecord.as_array (), lookup_map); + unsigned count = serialize_lookuprecord_array (c, lookup.as_array (), lookup_map); return_trace (c->check_assign (*lookupCount, count, HB_SERIALIZE_ERROR_INT_OVERFLOW)); } @@ -2831,8 +2922,8 @@ struct ChainRule { TRACE_SUBSET (this); - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); if (!backtrack_map) { @@ -2861,23 +2952,23 @@ struct ChainRule { TRACE_SANITIZE (this); if (!backtrack.sanitize (c)) return_trace (false); - const HeadlessArrayOf<HBUINT16> &input = StructAfter<HeadlessArrayOf<HBUINT16>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (!input.sanitize (c)) return_trace (false); - const Array16Of<HBUINT16> &lookahead = StructAfter<Array16Of<HBUINT16>> (input); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); if (!lookahead.sanitize (c)) return_trace (false); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); return_trace (lookup.sanitize (c)); } protected: - Array16Of<HBUINT16> + Array16Of<typename Types::HBUINT> backtrack; /* Array of backtracking values * (to be matched before the input * sequence) */ - HeadlessArrayOf<HBUINT16> + HeadlessArrayOf<typename Types::HBUINT> inputX; /* Array of input values (start with * second glyph) */ - Array16Of<HBUINT16> + Array16Of<typename Types::HBUINT> lookaheadX; /* Array of lookahead values's (to be * matched after the input sequence) */ Array16Of<LookupRecord> @@ -2887,8 +2978,11 @@ struct ChainRule DEFINE_SIZE_MIN (8); }; +template <typename Types> struct ChainRuleSet { + using ChainRule = OT::ChainRule<Types>; + bool intersects (const hb_set_t *glyphs, ChainContextClosureLookupContext &lookup_context) const { return @@ -3001,8 +3095,11 @@ struct ChainRuleSet DEFINE_SIZE_ARRAY (2, rule); }; -struct ChainContextFormat1 +template <typename Types> +struct ChainContextFormat1_4 { + using ChainRuleSet = OT::ChainRuleSet<Types>; + bool intersects (const hb_set_t *glyphs) const { struct ChainContextClosureLookupContext lookup_context = { @@ -3026,8 +3123,8 @@ struct ChainContextFormat1 void closure (hb_closure_context_t *c) const { - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); struct ChainContextClosureLookupContext lookup_context = { @@ -3138,18 +3235,21 @@ struct ChainContextFormat1 protected: HBUINT16 format; /* Format identifier--format = 1 */ - Offset16To<Coverage> + typename Types::template OffsetTo<Coverage> coverage; /* Offset to Coverage table--from * beginning of table */ - Array16OfOffset16To<ChainRuleSet> + Array16Of<typename Types::template OffsetTo<ChainRuleSet>> ruleSet; /* Array of ChainRuleSet tables * ordered by Coverage Index */ public: - DEFINE_SIZE_ARRAY (6, ruleSet); + DEFINE_SIZE_ARRAY (2 + 2 * Types::size, ruleSet); }; -struct ChainContextFormat2 +template <typename Types> +struct ChainContextFormat2_5 { + using ChainRuleSet = OT::ChainRuleSet<SmallTypes>; + bool intersects (const hb_set_t *glyphs) const { if (!(this+coverage).intersects (glyphs)) @@ -3168,7 +3268,7 @@ struct ChainContextFormat2 }; hb_set_t retained_coverage_glyphs; - (this+coverage).intersected_coverage_glyphs (glyphs, &retained_coverage_glyphs); + (this+coverage).intersect_set (*glyphs, retained_coverage_glyphs); hb_set_t coverage_glyph_classes; input_class_def.intersected_classes (&retained_coverage_glyphs, &coverage_glyph_classes); @@ -3193,8 +3293,8 @@ struct ChainContextFormat2 if (!(this+coverage).intersects (c->glyphs)) return; - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); @@ -3214,7 +3314,7 @@ struct ChainContextFormat2 | hb_filter ([&] (unsigned _) { return input_class_def.intersects_class (&c->parent_active_glyphs (), _); }, hb_first) - | hb_apply ([&] (const hb_pair_t<unsigned, const Offset16To<ChainRuleSet>&> _) + | hb_apply ([&] (const hb_pair_t<unsigned, const typename Types::template OffsetTo<ChainRuleSet>&> _) { const ChainRuleSet& chainrule_set = this+_.second; chainrule_set.closure (c, _.first, lookup_context); @@ -3330,7 +3430,7 @@ struct ChainContextFormat2 const ClassDef &input_class_def = this+inputClassDef; const ClassDef &lookahead_class_def = this+lookaheadClassDef; - /* For ChainContextFormat2 we cache the LookaheadClassDef instead of InputClassDef. + /* For ChainContextFormat2_5 we cache the LookaheadClassDef instead of InputClassDef. * The reason is that most heavy fonts want to identify a glyph in context and apply * a lookup to it. In this scenario, the length of the input sequence is one, whereas * the lookahead / backtrack are typically longer. The one glyph in input sequence is @@ -3378,7 +3478,7 @@ struct ChainContextFormat2 const hb_set_t* glyphset = c->plan->glyphset_gsub (); hb_set_t retained_coverage_glyphs; - (this+coverage).intersected_coverage_glyphs (glyphset, &retained_coverage_glyphs); + (this+coverage).intersect_set (*glyphset, retained_coverage_glyphs); hb_set_t coverage_glyph_classes; (this+inputClassDef).intersected_classes (&retained_coverage_glyphs, &coverage_glyph_classes); @@ -3433,38 +3533,40 @@ struct ChainContextFormat2 protected: HBUINT16 format; /* Format identifier--format = 2 */ - Offset16To<Coverage> + typename Types::template OffsetTo<Coverage> coverage; /* Offset to Coverage table--from * beginning of table */ - Offset16To<ClassDef> + typename Types::template OffsetTo<ClassDef> backtrackClassDef; /* Offset to glyph ClassDef table * containing backtrack sequence * data--from beginning of table */ - Offset16To<ClassDef> + typename Types::template OffsetTo<ClassDef> inputClassDef; /* Offset to glyph ClassDef * table containing input sequence * data--from beginning of table */ - Offset16To<ClassDef> + typename Types::template OffsetTo<ClassDef> lookaheadClassDef; /* Offset to glyph ClassDef table * containing lookahead sequence * data--from beginning of table */ - Array16OfOffset16To<ChainRuleSet> + Array16Of<typename Types::template OffsetTo<ChainRuleSet>> ruleSet; /* Array of ChainRuleSet tables * ordered by class */ public: - DEFINE_SIZE_ARRAY (12, ruleSet); + DEFINE_SIZE_ARRAY (4 + 4 * Types::size, ruleSet); }; struct ChainContextFormat3 { + using RuleSet = OT::RuleSet<SmallTypes>; + bool intersects (const hb_set_t *glyphs) const { - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (!(this+input[0]).intersects (glyphs)) return false; - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); struct ChainContextClosureLookupContext lookup_context = { {intersects_coverage, intersected_coverage_glyphs}, ContextFormat::CoverageBasedContext, @@ -3482,18 +3584,18 @@ struct ChainContextFormat3 void closure (hb_closure_context_t *c) const { - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (!(this+input[0]).intersects (c->glyphs)) return; - hb_set_t* cur_active_glyphs = &c->push_cur_active_glyphs (); - get_coverage ().intersected_coverage_glyphs (&c->previous_parent_active_glyphs (), + hb_set_t& cur_active_glyphs = c->push_cur_active_glyphs (); + get_coverage ().intersect_set (c->previous_parent_active_glyphs (), cur_active_glyphs); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); struct ChainContextClosureLookupContext lookup_context = { {intersects_coverage, intersected_coverage_glyphs}, ContextFormat::CoverageBasedContext, @@ -3514,9 +3616,9 @@ struct ChainContextFormat3 if (!intersects (c->glyphs)) return; - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); recurse_lookups (c, lookup.len, lookup.arrayZ); } @@ -3524,12 +3626,13 @@ struct ChainContextFormat3 void collect_glyphs (hb_collect_glyphs_context_t *c) const { - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); (this+input[0]).collect_coverage (c->input); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); + struct ChainContextCollectGlyphsLookupContext lookup_context = { {collect_coverage}, {this, this, this} @@ -3544,9 +3647,9 @@ struct ChainContextFormat3 bool would_apply (hb_would_apply_context_t *c) const { - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &input = StructAfter<decltype (inputX)> (backtrack); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); struct ChainContextApplyLookupContext lookup_context = { {{match_coverage, match_coverage, match_coverage}}, {this, this, this} @@ -3560,20 +3663,20 @@ struct ChainContextFormat3 const Coverage &get_coverage () const { - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); return this+input[0]; } bool apply (hb_ot_apply_context_t *c) const { TRACE_APPLY (this); - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); unsigned int index = (this+input[0]).get_coverage (c->buffer->cur().codepoint); if (likely (index == NOT_COVERED)) return_trace (false); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); struct ChainContextApplyLookupContext lookup_context = { {{match_coverage, match_coverage, match_coverage}}, {this, this, this} @@ -3615,21 +3718,21 @@ struct ChainContextFormat3 if (!serialize_coverage_offsets (c, backtrack.iter (), this)) return_trace (false); - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (!serialize_coverage_offsets (c, input.iter (), this)) return_trace (false); - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); if (!serialize_coverage_offsets (c, lookahead.iter (), this)) return_trace (false); - const Array16Of<LookupRecord> &lookupRecord = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); const hb_map_t *lookup_map = c->table_tag == HB_OT_TAG_GSUB ? c->plan->gsub_lookups : c->plan->gpos_lookups; - HBUINT16 *lookupCount = c->serializer->copy<HBUINT16> (lookupRecord.len); + HBUINT16 *lookupCount = c->serializer->copy<HBUINT16> (lookup.len); if (!lookupCount) return_trace (false); - unsigned count = serialize_lookuprecord_array (c->serializer, lookupRecord.as_array (), lookup_map); + unsigned count = serialize_lookuprecord_array (c->serializer, lookup.as_array (), lookup_map); return_trace (c->serializer->check_assign (*lookupCount, count, HB_SERIALIZE_ERROR_INT_OVERFLOW)); } @@ -3637,12 +3740,12 @@ struct ChainContextFormat3 { TRACE_SANITIZE (this); if (!backtrack.sanitize (c, this)) return_trace (false); - const Array16OfOffset16To<Coverage> &input = StructAfter<Array16OfOffset16To<Coverage>> (backtrack); + const auto &input = StructAfter<decltype (inputX)> (backtrack); if (!input.sanitize (c, this)) return_trace (false); if (!input.len) return_trace (false); /* To be consistent with Context. */ - const Array16OfOffset16To<Coverage> &lookahead = StructAfter<Array16OfOffset16To<Coverage>> (input); + const auto &lookahead = StructAfter<decltype (lookaheadX)> (input); if (!lookahead.sanitize (c, this)) return_trace (false); - const Array16Of<LookupRecord> &lookup = StructAfter<Array16Of<LookupRecord>> (lookahead); + const auto &lookup = StructAfter<decltype (lookupX)> (lookahead); return_trace (lookup.sanitize (c)); } @@ -3678,16 +3781,24 @@ struct ChainContext case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...)); case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...)); case 3: return_trace (c->dispatch (u.format3, std::forward<Ts> (ds)...)); +#ifndef HB_NO_BEYOND_64K + case 4: return_trace (c->dispatch (u.format4, std::forward<Ts> (ds)...)); + case 5: return_trace (c->dispatch (u.format5, std::forward<Ts> (ds)...)); +#endif default:return_trace (c->default_return_value ()); } } protected: union { - HBUINT16 format; /* Format identifier */ - ChainContextFormat1 format1; - ChainContextFormat2 format2; - ChainContextFormat3 format3; + HBUINT16 format; /* Format identifier */ + ChainContextFormat1_4<SmallTypes> format1; + ChainContextFormat2_5<SmallTypes> format2; + ChainContextFormat3 format3; +#ifndef HB_NO_BEYOND_64K + ChainContextFormat1_4<MediumTypes> format4; + ChainContextFormat2_5<MediumTypes> format5; +#endif } u; }; @@ -3871,39 +3982,209 @@ struct hb_ot_layout_lookup_accelerator_t #endif }; +template <typename Types> +struct GSUBGPOSVersion1_2 +{ + friend struct GSUBGPOS; + + protected: + FixedVersion<>version; /* Version of the GSUB/GPOS table--initially set + * to 0x00010000u */ + typename Types:: template OffsetTo<ScriptList> + scriptList; /* ScriptList table */ + typename Types::template OffsetTo<FeatureList> + featureList; /* FeatureList table */ + typename Types::template OffsetTo<LookupList<Types>> + lookupList; /* LookupList table */ + Offset32To<FeatureVariations> + featureVars; /* Offset to Feature Variations + table--from beginning of table + * (may be NULL). Introduced + * in version 0x00010001. */ + public: + DEFINE_SIZE_MIN (4 + 3 * Types::size); + + unsigned int get_size () const + { + return min_size + + (version.to_int () >= 0x00010001u ? featureVars.static_size : 0); + } + + template <typename TLookup> + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + typedef List16OfOffsetTo<TLookup, typename Types::HBUINT> TLookupList; + if (unlikely (!(scriptList.sanitize (c, this) && + featureList.sanitize (c, this) && + reinterpret_cast<const typename Types::template OffsetTo<TLookupList> &> (lookupList).sanitize (c, this)))) + return_trace (false); + +#ifndef HB_NO_VAR + if (unlikely (!(version.to_int () < 0x00010001u || featureVars.sanitize (c, this)))) + return_trace (false); +#endif + + return_trace (true); + } + + template <typename TLookup> + bool subset (hb_subset_layout_context_t *c) const + { + TRACE_SUBSET (this); + auto *out = c->subset_context->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + typedef LookupOffsetList<TLookup, typename Types::HBUINT> TLookupList; + reinterpret_cast<typename Types::template OffsetTo<TLookupList> &> (out->lookupList) + .serialize_subset (c->subset_context, + reinterpret_cast<const typename Types::template OffsetTo<TLookupList> &> (lookupList), + this, + c); + + reinterpret_cast<typename Types::template OffsetTo<RecordListOfFeature> &> (out->featureList) + .serialize_subset (c->subset_context, + reinterpret_cast<const typename Types::template OffsetTo<RecordListOfFeature> &> (featureList), + this, + c); + + out->scriptList.serialize_subset (c->subset_context, + scriptList, + this, + c); + +#ifndef HB_NO_VAR + if (version.to_int () >= 0x00010001u) + { + bool ret = out->featureVars.serialize_subset (c->subset_context, featureVars, this, c); + if (!ret && version.major == 1) + { + out->version.major = 1; + out->version.minor = 0; + } + } +#endif + + return_trace (true); + } +}; + struct GSUBGPOS { - bool has_data () const { return version.to_int (); } + unsigned int get_size () const + { + switch (u.version.major) { + case 1: return u.version1.get_size (); +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.get_size (); +#endif + default: return u.version.static_size; + } + } + + template <typename TLookup> + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + if (unlikely (!u.version.sanitize (c))) return_trace (false); + switch (u.version.major) { + case 1: return_trace (u.version1.sanitize<TLookup> (c)); +#ifndef HB_NO_BEYOND_64K + case 2: return_trace (u.version2.sanitize<TLookup> (c)); +#endif + default: return_trace (true); + } + } + + template <typename TLookup> + bool subset (hb_subset_layout_context_t *c) const + { + switch (u.version.major) { + case 1: return u.version1.subset<TLookup> (c); +#ifndef HB_NO_BEYOND_64K + case 2: return u.version2.subset<TLookup> (c); +#endif + default: return false; + } + } + + const ScriptList &get_script_list () const + { + switch (u.version.major) { + case 1: return this+u.version1.scriptList; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.scriptList; +#endif + default: return Null (ScriptList); + } + } + const FeatureList &get_feature_list () const + { + switch (u.version.major) { + case 1: return this+u.version1.featureList; +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.featureList; +#endif + default: return Null (FeatureList); + } + } + unsigned int get_lookup_count () const + { + switch (u.version.major) { + case 1: return (this+u.version1.lookupList).len; +#ifndef HB_NO_BEYOND_64K + case 2: return (this+u.version2.lookupList).len; +#endif + default: return 0; + } + } + const Lookup& get_lookup (unsigned int i) const + { + switch (u.version.major) { + case 1: return (this+u.version1.lookupList)[i]; +#ifndef HB_NO_BEYOND_64K + case 2: return (this+u.version2.lookupList)[i]; +#endif + default: return Null (Lookup); + } + } + const FeatureVariations &get_feature_variations () const + { + switch (u.version.major) { + case 1: return (u.version.to_int () >= 0x00010001u ? this+u.version1.featureVars : Null (FeatureVariations)); +#ifndef HB_NO_BEYOND_64K + case 2: return this+u.version2.featureVars; +#endif + default: return Null (FeatureVariations); + } + } + + bool has_data () const { return u.version.to_int (); } unsigned int get_script_count () const - { return (this+scriptList).len; } + { return get_script_list ().len; } const Tag& get_script_tag (unsigned int i) const - { return (this+scriptList).get_tag (i); } + { return get_script_list ().get_tag (i); } unsigned int get_script_tags (unsigned int start_offset, unsigned int *script_count /* IN/OUT */, hb_tag_t *script_tags /* OUT */) const - { return (this+scriptList).get_tags (start_offset, script_count, script_tags); } + { return get_script_list ().get_tags (start_offset, script_count, script_tags); } const Script& get_script (unsigned int i) const - { return (this+scriptList)[i]; } + { return get_script_list ()[i]; } bool find_script_index (hb_tag_t tag, unsigned int *index) const - { return (this+scriptList).find_index (tag, index); } + { return get_script_list ().find_index (tag, index); } unsigned int get_feature_count () const - { return (this+featureList).len; } + { return get_feature_list ().len; } hb_tag_t get_feature_tag (unsigned int i) const - { return i == Index::NOT_FOUND_INDEX ? HB_TAG_NONE : (this+featureList).get_tag (i); } + { return i == Index::NOT_FOUND_INDEX ? HB_TAG_NONE : get_feature_list ().get_tag (i); } unsigned int get_feature_tags (unsigned int start_offset, unsigned int *feature_count /* IN/OUT */, hb_tag_t *feature_tags /* OUT */) const - { return (this+featureList).get_tags (start_offset, feature_count, feature_tags); } + { return get_feature_list ().get_tags (start_offset, feature_count, feature_tags); } const Feature& get_feature (unsigned int i) const - { return (this+featureList)[i]; } + { return get_feature_list ()[i]; } bool find_feature_index (hb_tag_t tag, unsigned int *index) const - { return (this+featureList).find_index (tag, index); } - - unsigned int get_lookup_count () const - { return (this+lookupList).len; } - const Lookup& get_lookup (unsigned int i) const - { return (this+lookupList)[i]; } + { return get_feature_list ().find_index (tag, index); } bool find_variations_index (const int *coords, unsigned int num_coords, unsigned int *index) const @@ -3912,18 +4193,17 @@ struct GSUBGPOS *index = FeatureVariations::NOT_FOUND_INDEX; return false; #endif - return (version.to_int () >= 0x00010001u ? this+featureVars : Null (FeatureVariations)) - .find_index (coords, num_coords, index); + return get_feature_variations ().find_index (coords, num_coords, index); } const Feature& get_feature_variation (unsigned int feature_index, unsigned int variations_index) const { #ifndef HB_NO_VAR if (FeatureVariations::NOT_FOUND_INDEX != variations_index && - version.to_int () >= 0x00010001u) + u.version.to_int () >= 0x00010001u) { - const Feature *feature = (this+featureVars).find_substitute (variations_index, - feature_index); + const Feature *feature = get_feature_variations ().find_substitute (variations_index, + feature_index); if (feature) return *feature; } @@ -3935,8 +4215,7 @@ struct GSUBGPOS hb_set_t *lookup_indexes /* OUT */) const { #ifndef HB_NO_VAR - if (version.to_int () >= 0x00010001u) - (this+featureVars).collect_lookups (feature_indexes, lookup_indexes); + get_feature_variations ().collect_lookups (feature_indexes, lookup_indexes); #endif } @@ -3971,108 +4250,6 @@ struct GSUBGPOS } } - template <typename TLookup> - bool subset (hb_subset_layout_context_t *c) const - { - TRACE_SUBSET (this); - auto *out = c->subset_context->serializer->embed (*this); - if (unlikely (!out)) return_trace (false); - - typedef LookupOffsetList<TLookup> TLookupList; - reinterpret_cast<Offset16To<TLookupList> &> (out->lookupList) - .serialize_subset (c->subset_context, - reinterpret_cast<const Offset16To<TLookupList> &> (lookupList), - this, - c); - - reinterpret_cast<Offset16To<RecordListOfFeature> &> (out->featureList) - .serialize_subset (c->subset_context, - reinterpret_cast<const Offset16To<RecordListOfFeature> &> (featureList), - this, - c); - - out->scriptList.serialize_subset (c->subset_context, - scriptList, - this, - c); - -#ifndef HB_NO_VAR - if (version.to_int () >= 0x00010001u) - { - bool ret = out->featureVars.serialize_subset (c->subset_context, featureVars, this, c); - if (!ret) - { - out->version.major = 1; - out->version.minor = 0; - } - } -#endif - - return_trace (true); - } - - void find_duplicate_features (const hb_map_t *lookup_indices, - const hb_set_t *feature_indices, - hb_map_t *duplicate_feature_map /* OUT */) const - { - if (feature_indices->is_empty ()) return; - hb_hashmap_t<hb_tag_t, hb::unique_ptr<hb_set_t>> unique_features; - //find out duplicate features after subset - for (unsigned i : feature_indices->iter ()) - { - hb_tag_t t = get_feature_tag (i); - if (t == HB_MAP_VALUE_INVALID) continue; - if (!unique_features.has (t)) - { - if (unlikely (!unique_features.set (t, hb::unique_ptr<hb_set_t> {hb_set_create ()}))) - return; - if (unique_features.has (t)) - unique_features.get (t)->add (i); - duplicate_feature_map->set (i, i); - continue; - } - - bool found = false; - - hb_set_t* same_tag_features = unique_features.get (t); - for (unsigned other_f_index : same_tag_features->iter ()) - { - const Feature& f = get_feature (i); - const Feature& other_f = get_feature (other_f_index); - - auto f_iter = - + hb_iter (f.lookupIndex) - | hb_filter (lookup_indices) - ; - - auto other_f_iter = - + hb_iter (other_f.lookupIndex) - | hb_filter (lookup_indices) - ; - - bool is_equal = true; - for (; f_iter && other_f_iter; f_iter++, other_f_iter++) - { - unsigned a = *f_iter; - unsigned b = *other_f_iter; - if (a != b) { is_equal = false; break; } - } - - if (is_equal == false || f_iter || other_f_iter) continue; - - found = true; - duplicate_feature_map->set (i, other_f_index); - break; - } - - if (found == false) - { - same_tag_features->add (i); - duplicate_feature_map->set (i, i); - } - } - } - void prune_features (const hb_map_t *lookup_indices, /* IN */ hb_set_t *feature_indices /* IN/OUT */) const { @@ -4081,8 +4258,7 @@ struct GSUBGPOS // if the FeatureVariation's table and the alternate version(s) intersect the // set of lookup indices. hb_set_t alternate_feature_indices; - if (version.to_int () >= 0x00010001u) - (this+featureVars).closure_features (lookup_indices, &alternate_feature_indices); + get_feature_variations ().closure_features (lookup_indices, &alternate_feature_indices); if (unlikely (alternate_feature_indices.in_error())) { feature_indices->err (); @@ -4115,32 +4291,6 @@ struct GSUBGPOS } } - unsigned int get_size () const - { - return min_size + - (version.to_int () >= 0x00010001u ? featureVars.static_size : 0); - } - - template <typename TLookup> - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - typedef List16OfOffset16To<TLookup> TLookupList; - if (unlikely (!(version.sanitize (c) && - likely (version.major == 1) && - scriptList.sanitize (c, this) && - featureList.sanitize (c, this) && - reinterpret_cast<const Offset16To<TLookupList> &> (lookupList).sanitize (c, this)))) - return_trace (false); - -#ifndef HB_NO_VAR - if (unlikely (!(version.to_int () < 0x00010001u || featureVars.sanitize (c, this)))) - return_trace (false); -#endif - - return_trace (true); - } - template <typename T> struct accelerator_t { @@ -4180,21 +4330,15 @@ struct GSUBGPOS }; protected: - FixedVersion<>version; /* Version of the GSUB/GPOS table--initially set - * to 0x00010000u */ - Offset16To<ScriptList> - scriptList; /* ScriptList table */ - Offset16To<FeatureList> - featureList; /* FeatureList table */ - Offset16To<LookupList> - lookupList; /* LookupList table */ - Offset32To<FeatureVariations> - featureVars; /* Offset to Feature Variations - table--from beginning of table - * (may be NULL). Introduced - * in version 0x00010001. */ + union { + FixedVersion<> version; /* Version identifier */ + GSUBGPOSVersion1_2<SmallTypes> version1; +#ifndef HB_NO_BEYOND_64K + GSUBGPOSVersion1_2<MediumTypes> version2; +#endif + } u; public: - DEFINE_SIZE_MIN (10); + DEFINE_SIZE_MIN (4); }; |