+ HB_INTERNAL void reset (void);
+
+ inline unsigned int backtrack_len (void) const
+ { return have_output? out_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 deallocate_var_all (void);
+
+ HB_INTERNAL void add (hb_codepoint_t codepoint,
+ hb_mask_t mask,
+ unsigned int cluster);
+
+ 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 swap_buffers (void);
+ HB_INTERNAL void clear_output (void);
+ HB_INTERNAL void clear_positions (void);
+ HB_INTERNAL void replace_glyphs_be16 (unsigned int num_in,
+ unsigned int num_out,
+ const uint16_t *glyph_data_be);
+ 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);
+ /* Copies glyph at idx to output but doesn't advance idx */
+ HB_INTERNAL void copy_glyph (void);
+ /* Copies glyph at idx to output and advance idx.
+ * If there's no output, just advance idx. */
+ HB_INTERNAL void next_glyph (void);
+ /* Advance idx without copying to output. */
+ inline void skip_glyph (void) { idx++; }
+
+ inline 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)
+ {
+ 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);
+
+ /* 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);
+};