diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-buffer.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-buffer.hh | 161 |
1 files changed, 108 insertions, 53 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-buffer.hh b/src/3rdparty/harfbuzz-ng/src/hb-buffer.hh index bc6992905e..0a198722d6 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-buffer.hh +++ b/src/3rdparty/harfbuzz-ng/src/hb-buffer.hh @@ -32,31 +32,13 @@ #include "hb.hh" #include "hb-unicode.hh" +#include "hb-set-digest.hh" -#ifndef HB_BUFFER_MAX_LEN_FACTOR -#define HB_BUFFER_MAX_LEN_FACTOR 64 -#endif -#ifndef HB_BUFFER_MAX_LEN_MIN -#define HB_BUFFER_MAX_LEN_MIN 16384 -#endif -#ifndef HB_BUFFER_MAX_LEN_DEFAULT -#define HB_BUFFER_MAX_LEN_DEFAULT 0x3FFFFFFF /* Shaping more than a billion chars? Let us know! */ -#endif - -#ifndef HB_BUFFER_MAX_OPS_FACTOR -#define HB_BUFFER_MAX_OPS_FACTOR 1024 -#endif -#ifndef HB_BUFFER_MAX_OPS_MIN -#define HB_BUFFER_MAX_OPS_MIN 16384 -#endif -#ifndef HB_BUFFER_MAX_OPS_DEFAULT -#define HB_BUFFER_MAX_OPS_DEFAULT 0x1FFFFFFF /* Shaping more than a billion operations? Let us know! */ -#endif - static_assert ((sizeof (hb_glyph_info_t) == 20), ""); static_assert ((sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t)), ""); +HB_MARK_AS_FLAG_T (hb_glyph_flags_t); HB_MARK_AS_FLAG_T (hb_buffer_flags_t); HB_MARK_AS_FLAG_T (hb_buffer_serialize_flags_t); HB_MARK_AS_FLAG_T (hb_buffer_diff_flags_t); @@ -69,12 +51,13 @@ enum hb_buffer_scratch_flags_t { HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT = 0x00000008u, HB_BUFFER_SCRATCH_FLAG_HAS_CGJ = 0x00000010u, HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS = 0x00000020u, + HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE = 0x00000040u, - /* Reserved for complex shapers' internal use. */ - HB_BUFFER_SCRATCH_FLAG_COMPLEX0 = 0x01000000u, - HB_BUFFER_SCRATCH_FLAG_COMPLEX1 = 0x02000000u, - HB_BUFFER_SCRATCH_FLAG_COMPLEX2 = 0x04000000u, - HB_BUFFER_SCRATCH_FLAG_COMPLEX3 = 0x08000000u, + /* Reserved for shapers' internal use. */ + HB_BUFFER_SCRATCH_FLAG_SHAPER0 = 0x01000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER1 = 0x02000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER2 = 0x04000000u, + HB_BUFFER_SCRATCH_FLAG_SHAPER3 = 0x08000000u, }; HB_MARK_AS_FLAG_T (hb_buffer_scratch_flags_t); @@ -106,6 +89,7 @@ struct hb_buffer_t hb_segment_properties_t props; /* Script, language, direction */ bool successful; /* Allocations successful */ + bool shaping_failed; /* Shaping failure */ bool have_output; /* Whether we have an output buffer going on */ bool have_positions; /* Whether we have positions */ @@ -130,10 +114,9 @@ struct hb_buffer_t * Managed by enter / leave */ -#ifndef HB_NDEBUG uint8_t allocated_var_bits; -#endif uint8_t serial; + uint32_t random_state; hb_buffer_scratch_flags_t scratch_flags; /* Have space-fallback, etc. */ unsigned int max_len; /* Maximum allowed len. */ int max_ops; /* Maximum allowed operations. */ @@ -161,38 +144,40 @@ struct hb_buffer_t void allocate_var (unsigned int start, unsigned int count) { -#ifndef HB_NDEBUG unsigned int end = start + count; assert (end <= 8); unsigned int bits = (1u<<end) - (1u<<start); assert (0 == (allocated_var_bits & bits)); allocated_var_bits |= bits; -#endif + } + bool try_allocate_var (unsigned int start, unsigned int count) + { + unsigned int end = start + count; + assert (end <= 8); + unsigned int bits = (1u<<end) - (1u<<start); + if (allocated_var_bits & bits) + return false; + allocated_var_bits |= bits; + return true; } void deallocate_var (unsigned int start, unsigned int count) { -#ifndef HB_NDEBUG unsigned int end = start + count; assert (end <= 8); unsigned int bits = (1u<<end) - (1u<<start); assert (bits == (allocated_var_bits & bits)); allocated_var_bits &= ~bits; -#endif } void assert_var (unsigned int start, unsigned int count) { -#ifndef HB_NDEBUG unsigned int end = start + count; assert (end <= 8); - unsigned int bits = (1u<<end) - (1u<<start); + HB_UNUSED unsigned int bits = (1u<<end) - (1u<<start); assert (bits == (allocated_var_bits & bits)); -#endif } void deallocate_var_all () { -#ifndef HB_NDEBUG allocated_var_bits = 0; -#endif } hb_glyph_info_t &cur (unsigned int i = 0) { return info[idx + i]; } @@ -204,6 +189,14 @@ struct hb_buffer_t hb_glyph_info_t &prev () { return out_info[out_len ? out_len - 1 : 0]; } hb_glyph_info_t prev () const { return out_info[out_len ? out_len - 1 : 0]; } + hb_set_digest_t digest () const + { + hb_set_digest_t d; + d.init (); + d.add_array (&info[0].codepoint, len, sizeof (info[0])); + return d; + } + HB_INTERNAL void similar (const hb_buffer_t &src); HB_INTERNAL void reset (); HB_INTERNAL void clear (); @@ -285,7 +278,8 @@ struct hb_buffer_t HB_INTERNAL void guess_segment_properties (); - HB_INTERNAL void sync (); + HB_INTERNAL bool sync (); + HB_INTERNAL int sync_so_far (); HB_INTERNAL void clear_output (); HB_INTERNAL void clear_positions (); @@ -398,6 +392,8 @@ struct hb_buffer_t HB_INTERNAL void merge_out_clusters (unsigned int start, unsigned int end); /* Merge clusters for deleting current glyph, and skip it. */ HB_INTERNAL void delete_glyph (); + HB_INTERNAL void delete_glyphs_inplace (bool (*filter) (const hb_glyph_info_t *info)); + /* Adds glyph flags in mask to infos with clusters between start and end. @@ -458,13 +454,27 @@ struct hb_buffer_t start, end, true); } + void safe_to_insert_tatweel (unsigned int start = 0, unsigned int end = -1) + { + if ((flags & HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL) == 0) + { + unsafe_to_break (start, end); + return; + } + _set_glyph_flags (HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL, + start, end, + true); + } +#ifndef HB_OPTIMIZE_SIZE + HB_ALWAYS_INLINE +#endif void unsafe_to_concat (unsigned int start = 0, unsigned int end = -1) { if (likely ((flags & HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT) == 0)) return; _set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, start, end, - true); + false); } void unsafe_to_break_from_outbuffer (unsigned int start = 0, unsigned int end = -1) { @@ -472,6 +482,9 @@ struct hb_buffer_t start, end, true, true); } +#ifndef HB_OPTIMIZE_SIZE + HB_ALWAYS_INLINE +#endif void unsafe_to_concat_from_outbuffer (unsigned int start = 0, unsigned int end = -1) { if (likely ((flags & HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT) == 0)) @@ -487,6 +500,13 @@ struct hb_buffer_t HB_NODISCARD HB_INTERNAL bool enlarge (unsigned int size); + HB_NODISCARD bool resize (unsigned length) + { + assert (!have_output); + if (unlikely (!ensure (length))) return false; + len = length; + return true; + } HB_NODISCARD bool ensure (unsigned int size) { return likely (!size || size < allocated) ? true : enlarge (size); } @@ -547,20 +567,16 @@ struct hb_buffer_t bool message (hb_font_t *font, const char *fmt, ...) HB_PRINTF_FUNC(3, 4) { #ifdef HB_NO_BUFFER_MESSAGE - return true; + return true; #else - if (!messaging ()) + if (likely (!messaging ())) return true; - message_depth++; - va_list ap; va_start (ap, fmt); bool ret = message_impl (font, fmt, ap); va_end (ap); - message_depth--; - return ret; #endif } @@ -579,21 +595,59 @@ struct hb_buffer_t unsigned int cluster, hb_mask_t mask) { - for (unsigned int i = start; i < end; i++) - if (cluster != infos[i].cluster) + if (unlikely (start == end)) + return; + + unsigned cluster_first = infos[start].cluster; + unsigned cluster_last = infos[end - 1].cluster; + + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS || + (cluster != cluster_first && cluster != cluster_last)) + { + for (unsigned int i = start; i < end; i++) + if (cluster != infos[i].cluster) + { + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + infos[i].mask |= mask; + } + return; + } + + /* Monotone clusters */ + + if (cluster == cluster_first) + { + for (unsigned int i = end; start < i && infos[i - 1].cluster != cluster_first; i--) + { + scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; + infos[i - 1].mask |= mask; + } + } + else /* cluster == cluster_last */ + { + for (unsigned int i = start; i < end && infos[i].cluster != cluster_last; i++) { scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS; infos[i].mask |= mask; } + } } - static unsigned + unsigned _infos_find_min_cluster (const hb_glyph_info_t *infos, unsigned start, unsigned end, unsigned cluster = UINT_MAX) { - for (unsigned int i = start; i < end; i++) - cluster = hb_min (cluster, infos[i].cluster); - return cluster; + if (unlikely (start == end)) + return cluster; + + if (cluster_level == HB_BUFFER_CLUSTER_LEVEL_CHARACTERS) + { + for (unsigned int i = start; i < end; i++) + cluster = hb_min (cluster, infos[i].cluster); + return cluster; + } + + return hb_min (cluster, hb_min (infos[start].cluster, infos[end - 1].cluster)); } void clear_glyph_flags (hb_mask_t mask = 0) @@ -619,9 +673,10 @@ DECLARE_NULL_INSTANCE (hb_buffer_t); #define HB_BUFFER_XALLOCATE_VAR(b, func, var) \ b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \ sizeof (b->info[0].var)) -#define HB_BUFFER_ALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var ()) -#define HB_BUFFER_DEALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var ()) -#define HB_BUFFER_ASSERT_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, assert_var, var ()) +#define HB_BUFFER_ALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var ()) +#define HB_BUFFER_TRY_ALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, try_allocate_var, var ()) +#define HB_BUFFER_DEALLOCATE_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var ()) +#define HB_BUFFER_ASSERT_VAR(b, var) HB_BUFFER_XALLOCATE_VAR (b, assert_var, var ()) #endif /* HB_BUFFER_HH */ |