commit f4a579bc42fb811ff5c391a0e97b7d8656ef59b1
author Behdad Esfahbod <behdad@behdad.org> Mon Jul 25 16:20:16 2011 -0400
committer Behdad Esfahbod <behdad@behdad.org> Mon Jul 25 16:26:05 2011 -0400
tree ac81138ca08c86eec8b5ff17ea5315081a7128a6
parent 651e8dd79ec8eaca5ab75a61e8ce961ff7bd26eb

Add internal API for buffer var allocation

src/hb-buffer-private.hh

diff --git a/src/hb-buffer-private.hh b/src/hb-buffer-private.hh
index f544c82..d83d130 100644
--- a/src/hb-buffer-private.hh
+++ b/src/hb-buffer-private.hh
@@ -66,13 +66,15 @@
   unsigned int len; /* Length of ->info and ->pos arrays */
   unsigned int out_len; /* Length of ->out array if have_output */
 
-  unsigned int serial;
-
   unsigned int allocated; /* Length of allocated arrays */
   hb_glyph_info_t     *info;
   hb_glyph_info_t     *out_info;
   hb_glyph_position_t *pos;
 
+  unsigned int serial;
+  uint8_t allocated_var_bytes[8];
+  const char *allocated_var_owner[8];
+
 
   /* Methods */
 
@@ -82,6 +84,25 @@
   { 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);
+
+  inline void allocate_var_8 (unsigned int var_num, unsigned int i, const char *owner)
+  { assert (var_num < 2 && i < 4); allocate_var (var_num * 4 + i, 1, owner); }
+  inline void allocate_var_16 (unsigned int var_num, unsigned int i, const char *owner)
+  { assert (var_num < 2 && i < 2); allocate_var (var_num * 4 + i * 2, 2, owner); }
+  inline void allocate_var_32 (unsigned int var_num, const char *owner)
+  { assert (var_num < 2); allocate_var (var_num * 4, 4, owner); }
+
+  inline void deallocate_var_8 (unsigned int var_num, unsigned int i, const char *owner)
+  { assert (var_num < 2 && i < 4); deallocate_var (var_num * 4 + i, 1, owner); }
+  inline void deallocate_var_16 (unsigned int var_num, unsigned int i, const char *owner)
+  { assert (var_num < 2 && i < 2); deallocate_var (var_num * 4 + i * 2, 2, owner); }
+  inline void deallocate_var_32 (unsigned int var_num, const char *owner)
+  { assert (var_num < 2); deallocate_var (var_num * 4, 4, owner); }
+
+
   HB_INTERNAL void add (hb_codepoint_t  codepoint,
 			hb_mask_t       mask,
 			unsigned int    cluster);