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 */
{ 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);
out_len = 0;
serial = 0;
+ memset (allocated_var_bytes, 0, sizeof allocated_var_bytes);
+ memset (allocated_var_owner, 0, sizeof allocated_var_owner);
out_info = info;
}
}
+void hb_buffer_t::allocate_var (unsigned int byte_i, unsigned int count, const char *owner)
+{
+ assert (byte_i < 8 && byte_i + count < 8);
+ for (unsigned int i = byte_i; i < byte_i + count; i++) {
+ assert (!allocated_var_bytes[i]);
+ allocated_var_bytes[i]++;
+ allocated_var_owner[i] = owner;
+ }
+}
+
+void hb_buffer_t::deallocate_var (unsigned int byte_i, unsigned int count, const char *owner)
+{
+ assert (byte_i < 8 && byte_i + count < 8);
+ for (unsigned int i = byte_i; i < byte_i + count; i++) {
+ assert (allocated_var_bytes[i] && allocated_var_owner[i] == owner);
+ allocated_var_bytes[i]--;
+ }
+}
+
+
/* Public API */
hb_buffer_t *