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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-buffer.hh
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@@ -25,16 +25,15 @@
*
* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
* Google Author(s): Behdad Esfahbod
*/
-#ifndef HB_BUFFER_PRIVATE_HH
-#define HB_BUFFER_PRIVATE_HH
+#ifndef HB_BUFFER_HH
+#define HB_BUFFER_HH
-#include "hb-private.hh"
-#include "hb-object-private.hh"
-#include "hb-unicode-private.hh"
+#include "hb.hh"
+#include "hb-unicode.hh"
#ifndef HB_BUFFER_MAX_LEN_FACTOR
#define HB_BUFFER_MAX_LEN_FACTOR 32
#endif
@@ -82,19 +81,20 @@
/*
* hb_buffer_t
*/
-struct hb_buffer_t {
+struct hb_buffer_t
+{
hb_object_header_t header;
- ASSERT_POD ();
/* Information about how the text in the buffer should be treated */
hb_unicode_funcs_t *unicode; /* Unicode functions */
hb_buffer_flags_t flags; /* BOT / EOT / etc. */
hb_buffer_cluster_level_t cluster_level;
hb_codepoint_t replacement; /* U+FFFD or something else. */
+ hb_codepoint_t invisible; /* 0 or something else. */
hb_buffer_scratch_flags_t scratch_flags; /* Have space-fallback, etc. */
unsigned int max_len; /* Maximum allowed len. */
int max_ops; /* Maximum allowed operations. */
/* Buffer contents */
@@ -117,11 +117,11 @@
unsigned int serial;
/* Text before / after the main buffer contents.
* Always in Unicode, and ordered outward.
* Index 0 is for "pre-context", 1 for "post-context". */
- static const unsigned int CONTEXT_LENGTH = 5;
+ static constexpr unsigned CONTEXT_LENGTH = 5u;
hb_codepoint_t context[2][CONTEXT_LENGTH];
unsigned int context_len[2];
/* Debugging API */
hb_buffer_message_func_t message_func;
@@ -135,137 +135,189 @@
#endif
/* Methods */
- inline void allocate_var (unsigned int start, unsigned int count)
+ bool in_error () const { return !successful; }
+
+ 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
}
- inline void deallocate_var (unsigned int start, unsigned int count)
+ 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
}
- inline void assert_var (unsigned int start, unsigned int count)
+ 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);
assert (bits == (allocated_var_bits & bits));
#endif
}
- inline void deallocate_var_all (void)
+ void deallocate_var_all ()
{
#ifndef HB_NDEBUG
allocated_var_bits = 0;
#endif
}
- inline hb_glyph_info_t &cur (unsigned int i = 0) { return info[idx + i]; }
- inline hb_glyph_info_t cur (unsigned int i = 0) const { return info[idx + i]; }
+ hb_glyph_info_t &cur (unsigned int i = 0) { return info[idx + i]; }
+ hb_glyph_info_t cur (unsigned int i = 0) const { return info[idx + i]; }
- inline hb_glyph_position_t &cur_pos (unsigned int i = 0) { return pos[idx + i]; }
- inline hb_glyph_position_t cur_pos (unsigned int i = 0) const { return pos[idx + i]; }
+ hb_glyph_position_t &cur_pos (unsigned int i = 0) { return pos[idx + i]; }
+ hb_glyph_position_t cur_pos (unsigned int i = 0) const { return pos[idx + i]; }
- inline hb_glyph_info_t &prev (void) { return out_info[out_len ? out_len - 1 : 0]; }
- inline hb_glyph_info_t prev (void) const { return out_info[out_len ? out_len - 1 : 0]; }
+ 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]; }
- inline bool has_separate_output (void) const { return info != out_info; }
+ bool has_separate_output () const { return info != out_info; }
- HB_INTERNAL void reset (void);
- HB_INTERNAL void clear (void);
+ HB_INTERNAL void reset ();
+ HB_INTERNAL void clear ();
- inline unsigned int backtrack_len (void) const
- { return have_output? out_len : idx; }
- inline unsigned int lookahead_len (void) const
- { return len - idx; }
- inline unsigned int next_serial (void) { return serial++; }
+ unsigned int backtrack_len () const { return have_output? out_len : idx; }
+ unsigned int lookahead_len () const { return len - idx; }
+ unsigned int next_serial () { return serial++; }
HB_INTERNAL void add (hb_codepoint_t codepoint,
unsigned int cluster);
HB_INTERNAL void add_info (const hb_glyph_info_t &glyph_info);
HB_INTERNAL void reverse_range (unsigned int start, unsigned int end);
- HB_INTERNAL void reverse (void);
- HB_INTERNAL void reverse_clusters (void);
- HB_INTERNAL void guess_segment_properties (void);
-
- HB_INTERNAL void swap_buffers (void);
- HB_INTERNAL void remove_output (void);
- HB_INTERNAL void clear_output (void);
- HB_INTERNAL void clear_positions (void);
+ HB_INTERNAL void reverse ();
+ HB_INTERNAL void reverse_clusters ();
+ HB_INTERNAL void guess_segment_properties ();
+
+ HB_INTERNAL void swap_buffers ();
+ HB_INTERNAL void remove_output ();
+ HB_INTERNAL void clear_output ();
+ HB_INTERNAL void clear_positions ();
HB_INTERNAL void replace_glyphs (unsigned int num_in,
unsigned int num_out,
const hb_codepoint_t *glyph_data);
- HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index);
+ void replace_glyph (hb_codepoint_t glyph_index)
+ {
+ if (unlikely (out_info != info || out_len != idx)) {
+ if (unlikely (!make_room_for (1, 1))) return;
+ out_info[out_len] = info[idx];
+ }
+ out_info[out_len].codepoint = glyph_index;
+
+ idx++;
+ out_len++;
+ }
/* Makes a copy of the glyph at idx to output and replace glyph_index */
- HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index);
- HB_INTERNAL void output_info (const hb_glyph_info_t &glyph_info);
+ hb_glyph_info_t & output_glyph (hb_codepoint_t glyph_index)
+ {
+ if (unlikely (!make_room_for (0, 1))) return Crap(hb_glyph_info_t);
+
+ if (unlikely (idx == len && !out_len))
+ return Crap(hb_glyph_info_t);
+
+ out_info[out_len] = idx < len ? info[idx] : out_info[out_len - 1];
+ out_info[out_len].codepoint = glyph_index;
+
+ out_len++;
+
+ return out_info[out_len - 1];
+ }
+ void output_info (const hb_glyph_info_t &glyph_info)
+ {
+ if (unlikely (!make_room_for (0, 1))) return;
+
+ out_info[out_len] = glyph_info;
+
+ out_len++;
+ }
/* Copies glyph at idx to output but doesn't advance idx */
- HB_INTERNAL void copy_glyph (void);
- HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */
+ void copy_glyph ()
+ {
+ if (unlikely (!make_room_for (0, 1))) return;
+
+ out_info[out_len] = info[idx];
+
+ out_len++;
+ }
/* Copies glyph at idx to output and advance idx.
* If there's no output, just advance idx. */
- inline void
- next_glyph (void)
+ void
+ next_glyph ()
{
if (have_output)
{
- if (unlikely (out_info != info || out_len != idx)) {
+ if (out_info != info || out_len != idx)
+ {
if (unlikely (!make_room_for (1, 1))) return;
out_info[out_len] = info[idx];
}
out_len++;
}
idx++;
}
+ /* Copies n glyphs at idx to output and advance idx.
+ * If there's no output, just advance idx. */
+ void
+ next_glyphs (unsigned int n)
+ {
+ if (have_output)
+ {
+ if (out_info != info || out_len != idx)
+ {
+ if (unlikely (!make_room_for (n, n))) return;
+ memmove (out_info + out_len, info + idx, n * sizeof (out_info[0]));
+ }
+ out_len += n;
+ }
+ idx += n;
+ }
/* Advance idx without copying to output. */
- inline void skip_glyph (void) { idx++; }
-
- inline void reset_masks (hb_mask_t mask)
+ void skip_glyph () { idx++; }
+ void reset_masks (hb_mask_t mask)
{
for (unsigned int j = 0; j < len; j++)
info[j].mask = mask;
}
- inline void add_masks (hb_mask_t mask)
+ void add_masks (hb_mask_t mask)
{
for (unsigned int j = 0; j < len; j++)
info[j].mask |= mask;
}
HB_INTERNAL void set_masks (hb_mask_t value, hb_mask_t mask,
unsigned int cluster_start, unsigned int cluster_end);
- inline void merge_clusters (unsigned int start, unsigned int end)
+ void merge_clusters (unsigned int start, unsigned int end)
{
if (end - start < 2)
return;
merge_clusters_impl (start, end);
}
HB_INTERNAL void merge_clusters_impl (unsigned int start, unsigned int end);
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 (void);
+ HB_INTERNAL void delete_glyph ();
- inline void unsafe_to_break (unsigned int start,
+ void unsafe_to_break (unsigned int start,
unsigned int end)
{
if (end - start < 2)
return;
unsafe_to_break_impl (start, end);
@@ -273,30 +325,32 @@
HB_INTERNAL void unsafe_to_break_impl (unsigned int start, unsigned int end);
HB_INTERNAL void unsafe_to_break_from_outbuffer (unsigned int start, unsigned int end);
/* Internal methods */
+ HB_INTERNAL bool move_to (unsigned int i); /* i is output-buffer index. */
+
HB_INTERNAL bool enlarge (unsigned int size);
- inline bool ensure (unsigned int size)
+ bool ensure (unsigned int size)
{ return likely (!size || size < allocated) ? true : enlarge (size); }
- inline bool ensure_inplace (unsigned int size)
+ bool ensure_inplace (unsigned int size)
{ return likely (!size || size < allocated); }
HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out);
HB_INTERNAL bool shift_forward (unsigned int count);
typedef long scratch_buffer_t;
HB_INTERNAL scratch_buffer_t *get_scratch_buffer (unsigned int *size);
- inline void clear_context (unsigned int side) { context_len[side] = 0; }
+ void clear_context (unsigned int side) { context_len[side] = 0; }
HB_INTERNAL void sort (unsigned int start, unsigned int end, int(*compar)(const hb_glyph_info_t *, const hb_glyph_info_t *));
- inline bool messaging (void) { return unlikely (message_func); }
- inline bool message (hb_font_t *font, const char *fmt, ...) HB_PRINTF_FUNC(3, 4)
+ bool messaging () { return unlikely (message_func); }
+ bool message (hb_font_t *font, const char *fmt, ...) HB_PRINTF_FUNC(3, 4)
{
if (!messaging ())
return true;
va_list ap;
va_start (ap, fmt);
@@ -304,11 +358,11 @@
va_end (ap);
return ret;
}
HB_INTERNAL bool message_impl (hb_font_t *font, const char *fmt, va_list ap) HB_PRINTF_FUNC(3, 0);
- static inline void
+ static void
set_cluster (hb_glyph_info_t &inf, unsigned int cluster, unsigned int mask = 0)
{
if (inf.cluster != cluster)
{
if (mask & HB_GLYPH_FLAG_UNSAFE_TO_BREAK)
@@ -317,20 +371,20 @@
inf.mask &= ~HB_GLYPH_FLAG_UNSAFE_TO_BREAK;
}
inf.cluster = cluster;
}
- inline int
+ int
_unsafe_to_break_find_min_cluster (const hb_glyph_info_t *infos,
unsigned int start, unsigned int end,
unsigned int cluster) const
{
for (unsigned int i = start; i < end; i++)
cluster = MIN<unsigned int> (cluster, infos[i].cluster);
return cluster;
}
- inline void
+ void
_unsafe_to_break_set_mask (hb_glyph_info_t *infos,
unsigned int start, unsigned int end,
unsigned int cluster)
{
for (unsigned int i = start; i < end; i++)
@@ -339,22 +393,19 @@
scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_UNSAFE_TO_BREAK;
infos[i].mask |= HB_GLYPH_FLAG_UNSAFE_TO_BREAK;
}
}
- inline void
- unsafe_to_break_all (void)
- {
- unsafe_to_break_impl (0, len);
- }
- inline void
- safe_to_break_all (void)
+ void unsafe_to_break_all ()
+ { unsafe_to_break_impl (0, len); }
+ void safe_to_break_all ()
{
for (unsigned int i = 0; i < len; i++)
info[i].mask &= ~HB_GLYPH_FLAG_UNSAFE_TO_BREAK;
}
};
+DECLARE_NULL_INSTANCE (hb_buffer_t);
/* Loop over clusters. Duplicated in foreach_syllable(). */
#define foreach_cluster(buffer, start, end) \
for (unsigned int \
@@ -383,6 +434,6 @@
#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 ())
-#endif /* HB_BUFFER_PRIVATE_HH */
+#endif /* HB_BUFFER_HH */
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