[reorganization] WIP move single substitution into separate files.
This commit is contained in:
Garret Rieger
parent
c36844d6d9
commit
7dfd9e7001
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@ -0,0 +1,20 @@
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#ifndef OT_LAYOUT_GSUB_COMMON
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#define OT_LAYOUT_GSUB_COMMON
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#include "hb-serialize.hh"
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namespace OT {
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namespace Layout {
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namespace GSUB {
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typedef hb_pair_t<hb_codepoint_t, hb_codepoint_t> hb_codepoint_pair_t;
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template<typename Iterator>
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static void SingleSubst_serialize (hb_serialize_context_t *c,
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Iterator it);
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}
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}
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}
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#endif
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@ -0,0 +1,74 @@
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#ifndef OT_LAYOUT_GSUB_SINGLE_SUBST
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#define OT_LAYOUT_GSUB_SINGLE_SUBST
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#include "Common.hh"
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#include "SingleSubstFormat1.hh"
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#include "SingleSubstFormat2.hh"
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namespace OT {
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namespace Layout {
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namespace GSUB {
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struct SingleSubst
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{
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template<typename Iterator,
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hb_requires (hb_is_sorted_source_of (Iterator,
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const hb_codepoint_pair_t))>
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bool serialize (hb_serialize_context_t *c,
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Iterator glyphs)
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{
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TRACE_SERIALIZE (this);
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if (unlikely (!c->extend_min (u.format))) return_trace (false);
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unsigned format = 2;
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unsigned delta = 0;
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if (glyphs)
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{
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format = 1;
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auto get_delta = [=] (hb_codepoint_pair_t _)
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{ return (unsigned) (_.second - _.first) & 0xFFFF; };
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delta = get_delta (*glyphs);
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if (!hb_all (++(+glyphs), delta, get_delta)) format = 2;
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}
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u.format = format;
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switch (u.format) {
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case 1: return_trace (u.format1.serialize (c,
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+ glyphs
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| hb_map_retains_sorting (hb_first),
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delta));
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case 2: return_trace (u.format2.serialize (c, glyphs));
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default:return_trace (false);
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}
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}
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template <typename context_t, typename ...Ts>
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typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
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{
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TRACE_DISPATCH (this, u.format);
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if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
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switch (u.format) {
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case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
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case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
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default:return_trace (c->default_return_value ());
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}
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}
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protected:
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union {
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HBUINT16 format; /* Format identifier */
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SingleSubstFormat1 format1;
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SingleSubstFormat2 format2;
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} u;
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};
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template<typename Iterator>
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static void
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SingleSubst_serialize (hb_serialize_context_t *c,
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Iterator it)
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{ c->start_embed<SingleSubst> ()->serialize (c, it); }
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}
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}
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}
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#endif
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@ -0,0 +1,122 @@
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#ifndef OT_LAYOUT_GSUB_SINGLE_SUBST_FORMAT_1
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#define OT_LAYOUT_GSUB_SINGLE_SUBST_FORMAT_1
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#include "Common.hh"
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#include "hb-ot-layout-gsubgpos.hh"
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namespace OT {
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namespace Layout {
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namespace GSUB {
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struct SingleSubstFormat1
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{
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bool intersects (const hb_set_t *glyphs) const
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{ return (this+coverage).intersects (glyphs); }
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bool may_have_non_1to1 () const
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{ return false; }
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void closure (hb_closure_context_t *c) const
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{
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unsigned d = deltaGlyphID;
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+ hb_iter (this+coverage)
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| hb_filter (c->parent_active_glyphs ())
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| hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
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| hb_sink (c->output)
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;
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}
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void closure_lookups (hb_closure_lookups_context_t *c) const {}
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void collect_glyphs (hb_collect_glyphs_context_t *c) const
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{
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if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
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unsigned d = deltaGlyphID;
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+ hb_iter (this+coverage)
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| hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
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| hb_sink (c->output)
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;
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}
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const Coverage &get_coverage () const { return this+coverage; }
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bool would_apply (hb_would_apply_context_t *c) const
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{ return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
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bool apply (hb_ot_apply_context_t *c) const
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{
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TRACE_APPLY (this);
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hb_codepoint_t glyph_id = c->buffer->cur().codepoint;
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unsigned int index = (this+coverage).get_coverage (glyph_id);
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if (likely (index == NOT_COVERED)) return_trace (false);
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/* According to the Adobe Annotated OpenType Suite, result is always
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* limited to 16bit. */
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glyph_id = (glyph_id + deltaGlyphID) & 0xFFFFu;
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c->replace_glyph (glyph_id);
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return_trace (true);
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}
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template<typename Iterator,
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hb_requires (hb_is_sorted_source_of (Iterator, hb_codepoint_t))>
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bool serialize (hb_serialize_context_t *c,
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Iterator glyphs,
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unsigned delta)
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{
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TRACE_SERIALIZE (this);
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if (unlikely (!c->extend_min (this))) return_trace (false);
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if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false);
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c->check_assign (deltaGlyphID, delta, HB_SERIALIZE_ERROR_INT_OVERFLOW);
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return_trace (true);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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hb_codepoint_t delta = deltaGlyphID;
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auto it =
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+ hb_iter (this+coverage)
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| hb_filter (glyphset)
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| hb_map_retains_sorting ([&] (hb_codepoint_t g) {
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return hb_codepoint_pair_t (g,
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(g + delta) & 0xFFFF); })
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| hb_filter (glyphset, hb_second)
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| hb_map_retains_sorting ([&] (hb_codepoint_pair_t p) -> hb_codepoint_pair_t
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{ return hb_pair (glyph_map[p.first], glyph_map[p.second]); })
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;
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bool ret = bool (it);
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SingleSubst_serialize (c->serializer, it);
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return_trace (ret);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (coverage.sanitize (c, this) && deltaGlyphID.sanitize (c));
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}
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protected:
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HBUINT16 format; /* Format identifier--format = 1 */
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Offset16To<Coverage>
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coverage; /* Offset to Coverage table--from
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* beginning of Substitution table */
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HBUINT16 deltaGlyphID; /* Add to original GlyphID to get
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* substitute GlyphID, modulo 0x10000 */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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}
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}
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}
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#endif
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@ -0,0 +1,120 @@
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#ifndef OT_LAYOUT_GSUB_SINGLE_SUBST_FORMAT2
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#define OT_LAYOUT_GSUB_SINGLE_SUBST_FORMAT2
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#include "Common.hh"
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#include "hb-ot-layout-gsubgpos.hh"
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namespace OT {
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namespace Layout {
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namespace GSUB {
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struct SingleSubstFormat2
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{
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bool intersects (const hb_set_t *glyphs) const
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{ return (this+coverage).intersects (glyphs); }
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bool may_have_non_1to1 () const
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{ return false; }
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void closure (hb_closure_context_t *c) const
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{
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+ hb_zip (this+coverage, substitute)
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| hb_filter (c->parent_active_glyphs (), hb_first)
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| hb_map (hb_second)
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| hb_sink (c->output)
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;
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}
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void closure_lookups (hb_closure_lookups_context_t *c) const {}
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void collect_glyphs (hb_collect_glyphs_context_t *c) const
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{
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if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
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+ hb_zip (this+coverage, substitute)
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| hb_map (hb_second)
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| hb_sink (c->output)
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;
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}
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const Coverage &get_coverage () const { return this+coverage; }
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bool would_apply (hb_would_apply_context_t *c) const
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{ return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
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bool apply (hb_ot_apply_context_t *c) const
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{
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TRACE_APPLY (this);
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unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint);
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if (likely (index == NOT_COVERED)) return_trace (false);
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if (unlikely (index >= substitute.len)) return_trace (false);
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c->replace_glyph (substitute[index]);
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return_trace (true);
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}
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template<typename Iterator,
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hb_requires (hb_is_sorted_source_of (Iterator,
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hb_codepoint_pair_t))>
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bool serialize (hb_serialize_context_t *c,
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Iterator it)
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{
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TRACE_SERIALIZE (this);
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auto substitutes =
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+ it
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| hb_map (hb_second)
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;
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auto glyphs =
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+ it
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| hb_map_retains_sorting (hb_first)
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;
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if (unlikely (!c->extend_min (this))) return_trace (false);
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if (unlikely (!substitute.serialize (c, substitutes))) return_trace (false);
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if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false);
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return_trace (true);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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auto it =
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+ hb_zip (this+coverage, substitute)
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| hb_filter (glyphset, hb_first)
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| hb_filter (glyphset, hb_second)
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| hb_map_retains_sorting ([&] (hb_pair_t<hb_codepoint_t, const HBGlyphID16 &> p) -> hb_codepoint_pair_t
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{ return hb_pair (glyph_map[p.first], glyph_map[p.second]); })
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;
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bool ret = bool (it);
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SingleSubst_serialize (c->serializer, it);
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return_trace (ret);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (coverage.sanitize (c, this) && substitute.sanitize (c));
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}
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protected:
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HBUINT16 format; /* Format identifier--format = 2 */
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Offset16To<Coverage>
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coverage; /* Offset to Coverage table--from
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* beginning of Substitution table */
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Array16Of<HBGlyphID16>
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substitute; /* Array of substitute
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* GlyphIDs--ordered by Coverage Index */
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public:
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DEFINE_SIZE_ARRAY (6, substitute);
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};
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}
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}
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}
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#endif
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@ -30,285 +30,15 @@
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#define HB_OT_LAYOUT_GSUB_TABLE_HH
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#include "hb-ot-layout-gsubgpos.hh"
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#include "OT/Layout/GSUB/Common.hh"
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#include "OT/Layout/GSUB/SingleSubst.hh"
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namespace OT {
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typedef hb_pair_t<hb_codepoint_t, hb_codepoint_t> hb_codepoint_pair_t;
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template<typename Iterator>
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static void SingleSubst_serialize (hb_serialize_context_t *c,
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Iterator it);
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struct SingleSubstFormat1
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{
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bool intersects (const hb_set_t *glyphs) const
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{ return (this+coverage).intersects (glyphs); }
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bool may_have_non_1to1 () const
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{ return false; }
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void closure (hb_closure_context_t *c) const
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{
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unsigned d = deltaGlyphID;
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+ hb_iter (this+coverage)
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| hb_filter (c->parent_active_glyphs ())
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| hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
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| hb_sink (c->output)
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;
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}
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void closure_lookups (hb_closure_lookups_context_t *c) const {}
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void collect_glyphs (hb_collect_glyphs_context_t *c) const
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{
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if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
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unsigned d = deltaGlyphID;
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+ hb_iter (this+coverage)
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| hb_map ([d] (hb_codepoint_t g) { return (g + d) & 0xFFFFu; })
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| hb_sink (c->output)
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;
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}
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const Coverage &get_coverage () const { return this+coverage; }
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bool would_apply (hb_would_apply_context_t *c) const
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{ return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
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bool apply (hb_ot_apply_context_t *c) const
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{
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TRACE_APPLY (this);
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hb_codepoint_t glyph_id = c->buffer->cur().codepoint;
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unsigned int index = (this+coverage).get_coverage (glyph_id);
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if (likely (index == NOT_COVERED)) return_trace (false);
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/* According to the Adobe Annotated OpenType Suite, result is always
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* limited to 16bit. */
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glyph_id = (glyph_id + deltaGlyphID) & 0xFFFFu;
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c->replace_glyph (glyph_id);
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return_trace (true);
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}
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template<typename Iterator,
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hb_requires (hb_is_sorted_source_of (Iterator, hb_codepoint_t))>
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bool serialize (hb_serialize_context_t *c,
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Iterator glyphs,
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unsigned delta)
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{
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TRACE_SERIALIZE (this);
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if (unlikely (!c->extend_min (this))) return_trace (false);
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if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false);
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c->check_assign (deltaGlyphID, delta, HB_SERIALIZE_ERROR_INT_OVERFLOW);
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return_trace (true);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
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const hb_map_t &glyph_map = *c->plan->glyph_map;
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hb_codepoint_t delta = deltaGlyphID;
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auto it =
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+ hb_iter (this+coverage)
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| hb_filter (glyphset)
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| hb_map_retains_sorting ([&] (hb_codepoint_t g) {
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return hb_codepoint_pair_t (g,
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(g + delta) & 0xFFFF); })
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| hb_filter (glyphset, hb_second)
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| hb_map_retains_sorting ([&] (hb_codepoint_pair_t p) -> hb_codepoint_pair_t
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{ return hb_pair (glyph_map[p.first], glyph_map[p.second]); })
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;
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bool ret = bool (it);
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SingleSubst_serialize (c->serializer, it);
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return_trace (ret);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (coverage.sanitize (c, this) && deltaGlyphID.sanitize (c));
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}
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protected:
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HBUINT16 format; /* Format identifier--format = 1 */
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Offset16To<Coverage>
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coverage; /* Offset to Coverage table--from
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* beginning of Substitution table */
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HBUINT16 deltaGlyphID; /* Add to original GlyphID to get
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* substitute GlyphID, modulo 0x10000 */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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struct SingleSubstFormat2
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{
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bool intersects (const hb_set_t *glyphs) const
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{ return (this+coverage).intersects (glyphs); }
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bool may_have_non_1to1 () const
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{ return false; }
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void closure (hb_closure_context_t *c) const
|
||||
{
|
||||
+ hb_zip (this+coverage, substitute)
|
||||
| hb_filter (c->parent_active_glyphs (), hb_first)
|
||||
| hb_map (hb_second)
|
||||
| hb_sink (c->output)
|
||||
;
|
||||
|
||||
}
|
||||
|
||||
void closure_lookups (hb_closure_lookups_context_t *c) const {}
|
||||
|
||||
void collect_glyphs (hb_collect_glyphs_context_t *c) const
|
||||
{
|
||||
if (unlikely (!(this+coverage).collect_coverage (c->input))) return;
|
||||
+ hb_zip (this+coverage, substitute)
|
||||
| hb_map (hb_second)
|
||||
| hb_sink (c->output)
|
||||
;
|
||||
}
|
||||
|
||||
const Coverage &get_coverage () const { return this+coverage; }
|
||||
|
||||
bool would_apply (hb_would_apply_context_t *c) const
|
||||
{ return c->len == 1 && (this+coverage).get_coverage (c->glyphs[0]) != NOT_COVERED; }
|
||||
|
||||
bool apply (hb_ot_apply_context_t *c) const
|
||||
{
|
||||
TRACE_APPLY (this);
|
||||
unsigned int index = (this+coverage).get_coverage (c->buffer->cur().codepoint);
|
||||
if (likely (index == NOT_COVERED)) return_trace (false);
|
||||
|
||||
if (unlikely (index >= substitute.len)) return_trace (false);
|
||||
|
||||
c->replace_glyph (substitute[index]);
|
||||
|
||||
return_trace (true);
|
||||
}
|
||||
|
||||
template<typename Iterator,
|
||||
hb_requires (hb_is_sorted_source_of (Iterator,
|
||||
hb_codepoint_pair_t))>
|
||||
bool serialize (hb_serialize_context_t *c,
|
||||
Iterator it)
|
||||
{
|
||||
TRACE_SERIALIZE (this);
|
||||
auto substitutes =
|
||||
+ it
|
||||
| hb_map (hb_second)
|
||||
;
|
||||
auto glyphs =
|
||||
+ it
|
||||
| hb_map_retains_sorting (hb_first)
|
||||
;
|
||||
if (unlikely (!c->extend_min (this))) return_trace (false);
|
||||
if (unlikely (!substitute.serialize (c, substitutes))) return_trace (false);
|
||||
if (unlikely (!coverage.serialize_serialize (c, glyphs))) return_trace (false);
|
||||
return_trace (true);
|
||||
}
|
||||
|
||||
bool subset (hb_subset_context_t *c) const
|
||||
{
|
||||
TRACE_SUBSET (this);
|
||||
const hb_set_t &glyphset = *c->plan->glyphset_gsub ();
|
||||
const hb_map_t &glyph_map = *c->plan->glyph_map;
|
||||
|
||||
auto it =
|
||||
+ hb_zip (this+coverage, substitute)
|
||||
| hb_filter (glyphset, hb_first)
|
||||
| hb_filter (glyphset, hb_second)
|
||||
| hb_map_retains_sorting ([&] (hb_pair_t<hb_codepoint_t, const HBGlyphID16 &> p) -> hb_codepoint_pair_t
|
||||
{ return hb_pair (glyph_map[p.first], glyph_map[p.second]); })
|
||||
;
|
||||
|
||||
bool ret = bool (it);
|
||||
SingleSubst_serialize (c->serializer, it);
|
||||
return_trace (ret);
|
||||
}
|
||||
|
||||
bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (coverage.sanitize (c, this) && substitute.sanitize (c));
|
||||
}
|
||||
|
||||
protected:
|
||||
HBUINT16 format; /* Format identifier--format = 2 */
|
||||
Offset16To<Coverage>
|
||||
coverage; /* Offset to Coverage table--from
|
||||
* beginning of Substitution table */
|
||||
Array16Of<HBGlyphID16>
|
||||
substitute; /* Array of substitute
|
||||
* GlyphIDs--ordered by Coverage Index */
|
||||
public:
|
||||
DEFINE_SIZE_ARRAY (6, substitute);
|
||||
};
|
||||
|
||||
struct SingleSubst
|
||||
{
|
||||
|
||||
template<typename Iterator,
|
||||
hb_requires (hb_is_sorted_source_of (Iterator,
|
||||
const hb_codepoint_pair_t))>
|
||||
bool serialize (hb_serialize_context_t *c,
|
||||
Iterator glyphs)
|
||||
{
|
||||
TRACE_SERIALIZE (this);
|
||||
if (unlikely (!c->extend_min (u.format))) return_trace (false);
|
||||
unsigned format = 2;
|
||||
unsigned delta = 0;
|
||||
if (glyphs)
|
||||
{
|
||||
format = 1;
|
||||
auto get_delta = [=] (hb_codepoint_pair_t _)
|
||||
{ return (unsigned) (_.second - _.first) & 0xFFFF; };
|
||||
delta = get_delta (*glyphs);
|
||||
if (!hb_all (++(+glyphs), delta, get_delta)) format = 2;
|
||||
}
|
||||
u.format = format;
|
||||
switch (u.format) {
|
||||
case 1: return_trace (u.format1.serialize (c,
|
||||
+ glyphs
|
||||
| hb_map_retains_sorting (hb_first),
|
||||
delta));
|
||||
case 2: return_trace (u.format2.serialize (c, glyphs));
|
||||
default:return_trace (false);
|
||||
}
|
||||
}
|
||||
|
||||
template <typename context_t, typename ...Ts>
|
||||
typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
|
||||
{
|
||||
TRACE_DISPATCH (this, u.format);
|
||||
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
|
||||
switch (u.format) {
|
||||
case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
|
||||
case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
|
||||
default:return_trace (c->default_return_value ());
|
||||
}
|
||||
}
|
||||
|
||||
protected:
|
||||
union {
|
||||
HBUINT16 format; /* Format identifier */
|
||||
SingleSubstFormat1 format1;
|
||||
SingleSubstFormat2 format2;
|
||||
} u;
|
||||
};
|
||||
|
||||
template<typename Iterator>
|
||||
static void
|
||||
SingleSubst_serialize (hb_serialize_context_t *c,
|
||||
Iterator it)
|
||||
{ c->start_embed<SingleSubst> ()->serialize (c, it); }
|
||||
using Layout::GSUB::hb_codepoint_pair_t;
|
||||
using Layout::GSUB::SingleSubst;
|
||||
|
||||
struct Sequence
|
||||
{
|
||||
|
|
|
|||
|
|
@ -92,6 +92,10 @@ hb_base_sources = files(
|
|||
'hb-ot-layout-gdef-table.hh',
|
||||
'hb-ot-layout-gpos-table.hh',
|
||||
'hb-ot-layout-gsub-table.hh',
|
||||
'OT/Layout/GSUB/Common.hh',
|
||||
'OT/Layout/GSUB/SingleSubstFormat1.hh',
|
||||
'OT/Layout/GSUB/SingleSubstFormat2.hh',
|
||||
'OT/Layout/GSUB/SingleSubst.hh',
|
||||
'hb-ot-layout-gsubgpos.hh',
|
||||
'hb-ot-layout-jstf-table.hh',
|
||||
'hb-ot-layout.cc',
|
||||
|
|
|
|||
Loading…
Reference in New Issue