/src/harfbuzz/src/OT/Layout/GSUB/LigatureSet.hh

Source (jump to first uncovered line)
#ifndef OT_LAYOUT_GSUB_LIGATURESET_HH
#define OT_LAYOUT_GSUB_LIGATURESET_HH

#include "Common.hh"
#include "Ligature.hh"

namespace OT {
namespace Layout {
namespace GSUB_impl {

template <typename Types>
struct LigatureSet
{
  public:
  Array16OfOffset16To<Ligature<Types>>
                ligature;               /* Array LigatureSet tables
                                         * ordered by preference */
  
  DEFINE_SIZE_ARRAY (2, ligature);

  bool sanitize (hb_sanitize_context_t *c) const
  {
    TRACE_SANITIZE (this);
    return_trace (ligature.sanitize (c, this));
  }

  bool intersects (const hb_set_t *glyphs) const
  {
    return
    + hb_iter (ligature)
    | hb_map (hb_add (this))
    | hb_map ([glyphs] (const Ligature<Types> &_) { return _.intersects (glyphs); })
    | hb_any
    ;
  }

  bool intersects_lig_glyph (const hb_set_t *glyphs) const
  {
    return
    + hb_iter (ligature)
    | hb_map (hb_add (this))
    | hb_map ([glyphs] (const Ligature<Types> &_) { 
      return _.intersects_lig_glyph (glyphs) && _.intersects (glyphs);
    })
    | hb_any
    ;
  }

  void closure (hb_closure_context_t *c) const
  {
    + hb_iter (ligature)
    | hb_map (hb_add (this))
    | hb_apply ([c] (const Ligature<Types> &_) { _.closure (c); })
    ;
  }

  void collect_glyphs (hb_collect_glyphs_context_t *c) const
  {
    + hb_iter (ligature)
    | hb_map (hb_add (this))
    | hb_apply ([c] (const Ligature<Types> &_) { _.collect_glyphs (c); })
    ;
  }

  bool would_apply (hb_would_apply_context_t *c) const
  {
    return
    + hb_iter (ligature)
    | hb_map (hb_add (this))
    | hb_map ([c] (const Ligature<Types> &_) { return _.would_apply (c); })
    | hb_any
    ;
  }

  bool apply (hb_ot_apply_context_t *c) const
  {
    TRACE_APPLY (this);

    unsigned int num_ligs = ligature.len;

#ifndef HB_NO_OT_RULESETS_FAST_PATH
    if (HB_OPTIMIZE_SIZE_VAL || num_ligs <= 4)
#endif
    {
    slow:
      for (unsigned int i = 0; i < num_ligs; i++)
      {
  const auto &lig = this+ligature.arrayZ[i];
  if (lig.apply (c)) return_trace (true);
      }
      return_trace (false);
    }

    /* This version is optimized for speed by matching the first component
     * of the ligature here, instead of calling into the ligation code.
     *
     * This is replicated in ChainRuleSet and RuleSet. */

    auto &skippy_iter = c->iter_input;
    skippy_iter.reset (c->buffer->idx);
    skippy_iter.set_match_func (match_always, nullptr);
    skippy_iter.set_glyph_data ((HBUINT16 *) nullptr);
    unsigned unsafe_to;
    hb_codepoint_t first = (unsigned) -1;
    bool matched = skippy_iter.next (&unsafe_to);
    if (likely (matched))
    {
      first = c->buffer->info[skippy_iter.idx].codepoint;
      unsafe_to = skippy_iter.idx + 1;

      if (skippy_iter.may_skip (c->buffer->info[skippy_iter.idx]))
      {
  /* Can't use the fast path if eg. the next char is a default-ignorable
   * or other skippable. */
        goto slow;
      }
    }
    else
      goto slow;

    bool unsafe_to_concat = false;

    for (unsigned int i = 0; i < num_ligs; i++)
    {
      const auto &lig = this+ligature.arrayZ[i];
      if (unlikely (lig.component.lenP1 <= 1) ||
    lig.component.arrayZ[0] == first)
      {
  if (lig.apply (c))
  {
    if (unsafe_to_concat)
      c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to);
    return_trace (true);
  }
      }
      else if (likely (lig.component.lenP1 > 1))
        unsafe_to_concat = true;
    }
    if (likely (unsafe_to_concat))
      c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to);

    return_trace (false);
  }

  bool serialize (hb_serialize_context_t *c,
                  hb_array_t<const HBGlyphID16> ligatures,
                  hb_array_t<const unsigned int> component_count_list,
                  hb_array_t<const HBGlyphID16> &component_list /* Starting from second for each ligature */)
  {
    TRACE_SERIALIZE (this);
    if (unlikely (!c->extend_min (this))) return_trace (false);
    if (unlikely (!ligature.serialize (c, ligatures.length))) return_trace (false);
    for (unsigned int i = 0; i < ligatures.length; i++)
    {
      unsigned int component_count = (unsigned) hb_max ((int) component_count_list[i] - 1, 0);
      if (unlikely (!ligature[i].serialize_serialize (c,
                                                      ligatures[i],
                                                      component_list.sub_array (0, component_count))))
        return_trace (false);
      component_list += component_count;
    }
    return_trace (true);
  }

  bool subset (hb_subset_context_t *c, unsigned coverage_idx) const
  {
    TRACE_SUBSET (this);
    auto *out = c->serializer->start_embed (*this);
    if (unlikely (!c->serializer->extend_min (out))) return_trace (false);

    + hb_iter (ligature)
    | hb_filter (subset_offset_array (c, out->ligature, this, coverage_idx))
    | hb_drain
    ;

    if (bool (out->ligature))
      // Ensure Coverage table is always packed after this.
      c->serializer->add_virtual_link (coverage_idx);

    return_trace (bool (out->ligature));
  }
};

}
}
}

#endif  /* OT_LAYOUT_GSUB_LIGATURESET_HH */

Line	Count	Source (jump to first uncovered line)
1		#ifndef OT_LAYOUT_GSUB_LIGATURESET_HH
2		#define OT_LAYOUT_GSUB_LIGATURESET_HH
3
4		#include "Common.hh"
5		#include "Ligature.hh"
6
7		namespace OT {
8		namespace Layout {
9		namespace GSUB_impl {
10
11		template <typename Types>
12		struct LigatureSet
13		{
14		public:
15		Array16OfOffset16To<Ligature<Types>>
16		ligature; /* Array LigatureSet tables
17		* ordered by preference */
18
19		DEFINE_SIZE_ARRAY (2, ligature);
20
21		bool sanitize (hb_sanitize_context_t *c) const
22	0	{
23	0	TRACE_SANITIZE (this);
24	0	return_trace (ligature.sanitize (c, this));
25	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::sanitize(hb_sanitize_context_t) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::sanitize(hb_sanitize_context_t) const
26
27		bool intersects (const hb_set_t *glyphs) const
28	0	{
29	0	return
30	0	+ hb_iter (ligature)
31	0	\| hb_map (hb_add (this))
32	0	\| hb_map ([glyphs] (const Ligature<Types> &_) { return _.intersects (glyphs); })
33	0	\| hb_any
34	0	;
35	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::intersects(hb_set_t const) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::intersects(hb_set_t const) const
36
37		bool intersects_lig_glyph (const hb_set_t *glyphs) const
38	0	{
39	0	return
40	0	+ hb_iter (ligature)
41	0	\| hb_map (hb_add (this))
42	0	\| hb_map ([glyphs] (const Ligature<Types> &_) {
43	0	return _.intersects_lig_glyph (glyphs) && _.intersects (glyphs);
44	0	})
45	0	\| hb_any
46	0	;
47	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::intersects_lig_glyph(hb_set_t const) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::intersects_lig_glyph(hb_set_t const) const
48
49		void closure (hb_closure_context_t *c) const
50	0	{
51	0	+ hb_iter (ligature)
52	0	\| hb_map (hb_add (this))
53	0	\| hb_apply ([c] (const Ligature<Types> &_) { _.closure (c); }) Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::closure(OT::hb_closure_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::closure(OT::hb_closure_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&) const
54	0	;
55	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::closure(OT::hb_closure_context_t) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::closure(OT::hb_closure_context_t) const
56
57		void collect_glyphs (hb_collect_glyphs_context_t *c) const
58	0	{
59	0	+ hb_iter (ligature)
60	0	\| hb_map (hb_add (this))
61	0	\| hb_apply ([c] (const Ligature<Types> &_) { _.collect_glyphs (c); }) Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::collect_glyphs(OT::hb_collect_glyphs_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::collect_glyphs(OT::hb_collect_glyphs_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&) const
62	0	;
63	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::collect_glyphs(OT::hb_collect_glyphs_context_t) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::collect_glyphs(OT::hb_collect_glyphs_context_t) const
64
65		bool would_apply (hb_would_apply_context_t *c) const
66	0	{
67	0	return
68	0	+ hb_iter (ligature)
69	0	\| hb_map (hb_add (this))
70	0	\| hb_map ([c] (const Ligature<Types> &_) { return _.would_apply (c); }) Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::would_apply(OT::hb_would_apply_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::SmallTypes> const&) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::would_apply(OT::hb_would_apply_context_t) const::{lambda(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&)#1}::operator()(OT::Layout::GSUB_impl::Ligature<OT::Layout::MediumTypes> const&) const
71	0	\| hb_any
72	0	;
73	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::would_apply(OT::hb_would_apply_context_t) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::would_apply(OT::hb_would_apply_context_t) const
74
75		bool apply (hb_ot_apply_context_t *c) const
76	0	{
77	0	TRACE_APPLY (this);
78
79	0	unsigned int num_ligs = ligature.len;
80
81	0	#ifndef HB_NO_OT_RULESETS_FAST_PATH
82	0	if (HB_OPTIMIZE_SIZE_VAL \|\| num_ligs <= 4)
83	0	#endif
84	0	{
85	0	slow:
86	0	for (unsigned int i = 0; i < num_ligs; i++)
87	0	{
88	0	const auto &lig = this+ligature.arrayZ[i];
89	0	if (lig.apply (c)) return_trace (true);
90	0	}
91	0	return_trace (false);
92	0	}
93
94		/* This version is optimized for speed by matching the first component
95		* of the ligature here, instead of calling into the ligation code.
96		*
97		* This is replicated in ChainRuleSet and RuleSet. */
98
99	0	auto &skippy_iter = c->iter_input;
100	0	skippy_iter.reset (c->buffer->idx);
101	0	skippy_iter.set_match_func (match_always, nullptr);
102	0	skippy_iter.set_glyph_data ((HBUINT16 *) nullptr);
103	0	unsigned unsafe_to;
104	0	hb_codepoint_t first = (unsigned) -1;
105	0	bool matched = skippy_iter.next (&unsafe_to);
106	0	if (likely (matched))
107	0	{
108	0	first = c->buffer->info[skippy_iter.idx].codepoint;
109	0	unsafe_to = skippy_iter.idx + 1;
110
111	0	if (skippy_iter.may_skip (c->buffer->info[skippy_iter.idx]))
112	0	{
113		/* Can't use the fast path if eg. the next char is a default-ignorable
114		* or other skippable. */
115	0	goto slow;
116	0	}
117	0	}
118	0	else
119	0	goto slow;
120
121	0	bool unsafe_to_concat = false;
122
123	0	for (unsigned int i = 0; i < num_ligs; i++)
124	0	{
125	0	const auto &lig = this+ligature.arrayZ[i];
126	0	if (unlikely (lig.component.lenP1 <= 1) \|\|
127	0	lig.component.arrayZ[0] == first)
128	0	{
129	0	if (lig.apply (c))
130	0	{
131	0	if (unsafe_to_concat)
132	0	c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to);
133	0	return_trace (true);
134	0	}
135	0	}
136	0	else if (likely (lig.component.lenP1 > 1))
137	0	unsafe_to_concat = true;
138	0	}
139	0	if (likely (unsafe_to_concat))
140	0	c->buffer->unsafe_to_concat (c->buffer->idx, unsafe_to);
141
142	0	return_trace (false);
143	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::apply(OT::hb_ot_apply_context_t) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::apply(OT::hb_ot_apply_context_t) const
144
145		bool serialize (hb_serialize_context_t *c,
146		hb_array_t<const HBGlyphID16> ligatures,
147		hb_array_t<const unsigned int> component_count_list,
148		hb_array_t<const HBGlyphID16> &component_list /* Starting from second for each ligature */)
149	0	{
150	0	TRACE_SERIALIZE (this);
151	0	if (unlikely (!c->extend_min (this))) return_trace (false);
152	0	if (unlikely (!ligature.serialize (c, ligatures.length))) return_trace (false);
153	0	for (unsigned int i = 0; i < ligatures.length; i++)
154	0	{
155	0	unsigned int component_count = (unsigned) hb_max ((int) component_count_list[i] - 1, 0);
156	0	if (unlikely (!ligature[i].serialize_serialize (c,
157	0	ligatures[i],
158	0	component_list.sub_array (0, component_count))))
159	0	return_trace (false);
160	0	component_list += component_count;
161	0	}
162	0	return_trace (true);
163	0	}
164
165		bool subset (hb_subset_context_t *c, unsigned coverage_idx) const
166	0	{
167	0	TRACE_SUBSET (this);
168	0	auto out = c->serializer->start_embed (this);
169	0	if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
170	0
171	0	+ hb_iter (ligature)
172	0	\| hb_filter (subset_offset_array (c, out->ligature, this, coverage_idx))
173	0	\| hb_drain
174	0	;
175	0
176	0	if (bool (out->ligature))
177	0	// Ensure Coverage table is always packed after this.
178	0	c->serializer->add_virtual_link (coverage_idx);
179	0
180	0	return_trace (bool (out->ligature));
181	0	} Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::SmallTypes>::subset(hb_subset_context_t, unsigned int) const Unexecuted instantiation: OT::Layout::GSUB_impl::LigatureSet<OT::Layout::MediumTypes>::subset(hb_subset_context_t, unsigned int) const
182		};
183
184		}
185		}
186		}
187
188		#endif /* OT_LAYOUT_GSUB_LIGATURESET_HH */

Coverage Report

Created: 2025-07-11 06:04