Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-buffer-private.hh

 /*
  * Copyright © 1998-2004  David Turner and Werner Lemberg
  * Copyright © 2004,2007,2009,2010  Red Hat, Inc.
  * Copyright © 2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
@@ skipping 85 matching lines @@
   unsigned int context_len[2];
 
 
   /* Methods */
 
   HB_INTERNAL void reset (void);
   HB_INTERNAL void clear (void);
 
   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++; }
 
   HB_INTERNAL void allocate_var (unsigned int byte_i, unsigned int count, const char *owner);
   HB_INTERNAL void deallocate_var (unsigned int byte_i, unsigned int count, const char *owner);
   HB_INTERNAL void assert_var (unsigned int byte_i, unsigned int count, const char *owner);
   HB_INTERNAL void deallocate_var_all (void);
 
   HB_INTERNAL void add (hb_codepoint_t  codepoint,
                         unsigned int    cluster);
   HB_INTERNAL void add_info (const hb_glyph_info_t &glyph_info);
@@ skipping 11 matching lines @@
   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);
   /* 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);
   /* 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. */
   /* Copies glyph at idx to output and advance idx.
    * If there's no output, just advance idx. */
   inline void
   next_glyph (void)
   {
     if (have_output)
     {
       if (unlikely (out_info != info || out_len != idx)) {
         if (unlikely (!make_room_for (1, 1))) return;
         out_info[out_len] = info[idx];
@@ skipping 27 matching lines @@
   HB_INTERNAL void merge_out_clusters (unsigned int start,
                                        unsigned int end);
 
   /* Internal methods */
   HB_INTERNAL bool enlarge (unsigned int size);
 
   inline bool ensure (unsigned int size)
   { return likely (size < allocated) ? true : enlarge (size); }
 
   HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out);
+  HB_INTERNAL bool shift_forward (unsigned int count);
 
-  HB_INTERNAL void *get_scratch_buffer (unsigned int *size);
+  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; }
 };
 
 
 #define HB_BUFFER_XALLOCATE_VAR(b, func, var, owner) \
   b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \
            sizeof (b->info[0].var), owner)
 #define HB_BUFFER_ALLOCATE_VAR(b, var) \
         HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var (), #var)
 #define HB_BUFFER_DEALLOCATE_VAR(b, var) \
         HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var (), #var)
 #define HB_BUFFER_ASSERT_VAR(b, var) \
         HB_BUFFER_XALLOCATE_VAR (b, assert_var, var (), #var)
 
 
 #endif /* HB_BUFFER_PRIVATE_HH */