Roll HarfBuzz to 0.9.35

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 30 matching lines @@
 
 /*
  * 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_segment_properties_t props; /* Script, language, direction */
   hb_buffer_flags_t flags; /* BOT / EOT / etc. */
   hb_codepoint_t replacement; /* U+FFFD or something else. */
 
   /* Buffer contents */
-
   hb_buffer_content_type_t content_type;
+  hb_segment_properties_t props; /* Script, language, direction */
 
   bool in_error; /* Allocation failed */
   bool have_output; /* Whether we have an output buffer going on */
   bool have_positions; /* Whether we have positions */
 
   unsigned int idx; /* Cursor into ->info and ->pos arrays */
   unsigned int len; /* Length of ->info and ->pos arrays */
   unsigned int out_len; /* Length of ->out array if have_output */
 
   unsigned int allocated; /* Length of allocated arrays */
@@ skipping 106 matching lines @@
                                    unsigned int end);
   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 || size < allocated) ? true : enlarge (size); }
 
+  inline 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; }
 };
 
 
 #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 */