hb-buffer-private.h

   1 #ifndef HB_BUFFER_PRIVATE_H
   2 #define HB_BUFFER_PRIVATE_H
   3 struct hb_buffer_t {
   4   atomic_int32_t ref_cnt;
   5   hb_unicode_funcs_t *unicode;//Unicode functions
   6   hb_segment_properties_t props;//Script, language, direction
   7   hb_buffer_flags_t flags;//BOT / EOT / etc.
   8
   9   //Buffer contents
  10
  11   hb_buffer_content_type_t content_type;
  12
  13   hb_bool_t in_error;//Allocation failed
  14   hb_bool_t have_output;//Whether we have an output buffer going on
  15   hb_bool_t have_positions;//Whether we have positions
  16
  17   unsigned idx;//Cursor into ->info and ->pos arrays
  18   unsigned len;//Length of ->info and ->pos arrays
  19   unsigned out_len;//Length of ->out array if have_output
  20
  21   unsigned allocated;//Length of allocated arrays
  22   hb_glyph_info_t *info;
  23   hb_glyph_info_t *out_info;
  24   hb_glyph_position_t *pos;
  25
  26   unsigned serial;
  27
  28   //These reflect current allocations of the bytes in glyph_info_t's var1 and
  29   //var2.
  30   uint8_t allocated_var_bytes[8];
  31   const char *allocated_var_owner[8];
  32
  33   //Text before / after the main buffer contents.
  34   //Always in Unicode, and ordered outward.
  35   //Index 0 is for "pre-context", 1 for "post-context".
  36   #define HB_BUFFER_CONTEXT_LENGTH 5
  37   hb_codepoint_t context[2][HB_BUFFER_CONTEXT_LENGTH];
  38   unsigned context_len[2];
  39 };
  40
  41 void
  42 hb_buffer_clear_positions(hb_buffer_t *buffer);
  43 #endif