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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-lcar-table.hh115
1 files changed, 90 insertions, 25 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-lcar-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-lcar-table.hh
index 2e45fd28b82..7063b386c2e 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-lcar-table.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-aat-layout-lcar-table.hh
@@ -38,56 +38,121 @@ namespace AAT {
typedef ArrayOf<HBINT16> LigCaretClassEntry;
-struct lcar
+struct lcarFormat0
{
- static constexpr hb_tag_t tableTag = HB_AAT_TAG_lcar;
+ unsigned int get_lig_carets (hb_font_t *font,
+ hb_direction_t direction,
+ hb_codepoint_t glyph,
+ unsigned int start_offset,
+ unsigned int *caret_count /* IN/OUT */,
+ hb_position_t *caret_array /* OUT */,
+ const void *base) const
+ {
+ const OffsetTo<LigCaretClassEntry>* entry_offset = lookupTable.get_value (glyph,
+ font->face->get_num_glyphs ());
+ const LigCaretClassEntry& array = entry_offset ? base+*entry_offset : Null (LigCaretClassEntry);
+ if (caret_count)
+ {
+ hb_array_t<const HBINT16> arr = array.sub_array (start_offset, caret_count);
+ for (unsigned int i = 0; i < arr.length; ++i)
+ caret_array[i] = font->em_scale_dir (arr[i], direction);
+ }
+ return array.len;
+ }
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base)));
+ }
+
+ protected:
+ Lookup<OffsetTo<LigCaretClassEntry>>
+ lookupTable; /* data Lookup table associating glyphs */
+ public:
+ DEFINE_SIZE_MIN (2);
+};
+
+struct lcarFormat1
+{
unsigned int get_lig_carets (hb_font_t *font,
hb_direction_t direction,
hb_codepoint_t glyph,
unsigned int start_offset,
unsigned int *caret_count /* IN/OUT */,
- hb_position_t *caret_array /* OUT */) const
+ hb_position_t *caret_array /* OUT */,
+ const void *base) const
{
- const OffsetTo<LigCaretClassEntry>* entry_offset = lookup.get_value (glyph,
- font->face->get_num_glyphs ());
- const LigCaretClassEntry& array = entry_offset ? this+*entry_offset : Null (LigCaretClassEntry);
+ const OffsetTo<LigCaretClassEntry>* entry_offset = lookupTable.get_value (glyph,
+ font->face->get_num_glyphs ());
+ const LigCaretClassEntry& array = entry_offset ? base+*entry_offset : Null (LigCaretClassEntry);
if (caret_count)
{
hb_array_t<const HBINT16> arr = array.sub_array (start_offset, caret_count);
- switch (format)
+ for (unsigned int i = 0; i < arr.length; ++i)
{
- case 0:
- for (unsigned int i = 0; i < arr.length; ++i)
- caret_array[i] = font->em_scale_dir (arr[i], direction);
- break;
- case 1:
- for (unsigned int i = 0; i < arr.length; ++i)
- {
- hb_position_t x, y;
- font->get_glyph_contour_point_for_origin (glyph, arr[i], direction, &x, &y);
- caret_array[i] = HB_DIRECTION_IS_HORIZONTAL (direction) ? x : y;
- }
- break;
+ hb_position_t x = 0, y = 0;
+ font->get_glyph_contour_point_for_origin (glyph, arr[i], direction, &x, &y);
+ caret_array[i] = HB_DIRECTION_IS_HORIZONTAL (direction) ? x : y;
}
}
return array.len;
}
+ bool sanitize (hb_sanitize_context_t *c, const void *base) const
+ {
+ TRACE_SANITIZE (this);
+ return_trace (likely (c->check_struct (this) && lookupTable.sanitize (c, base)));
+ }
+
+ protected:
+ Lookup<OffsetTo<LigCaretClassEntry>>
+ lookupTable; /* data Lookup table associating glyphs */
+ public:
+ DEFINE_SIZE_MIN (2);
+};
+
+struct lcar
+{
+ static constexpr hb_tag_t tableTag = HB_AAT_TAG_lcar;
+
+ unsigned int get_lig_carets (hb_font_t *font,
+ hb_direction_t direction,
+ hb_codepoint_t glyph,
+ unsigned int start_offset,
+ unsigned int *caret_count /* IN/OUT */,
+ hb_position_t *caret_array /* OUT */) const
+ {
+ switch (format)
+ {
+ case 0: return u.format0.get_lig_carets (font, direction, glyph, start_offset,
+ caret_count, caret_array, this);
+ case 1: return u.format1.get_lig_carets (font, direction, glyph, start_offset,
+ caret_count, caret_array, this);
+ default:if (caret_count) *caret_count = 0; return 0;
+ }
+ }
+
bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
- return_trace (likely (c->check_struct (this) &&
- version.major == 1 &&
- lookup.sanitize (c, this)));
+ if (unlikely (!c->check_struct (this) || version.major != 1))
+ return_trace (false);
+
+ switch (format) {
+ case 0: return_trace (u.format0.sanitize (c, this));
+ case 1: return_trace (u.format1.sanitize (c, this));
+ default:return_trace (true);
+ }
}
protected:
FixedVersion<>version; /* Version number of the ligature caret table */
HBUINT16 format; /* Format of the ligature caret table. */
- Lookup<OffsetTo<LigCaretClassEntry>>
- lookup; /* data Lookup table associating glyphs */
-
+ union {
+ lcarFormat0 format0;
+ lcarFormat0 format1;
+ } u;
public:
DEFINE_SIZE_MIN (8);
};