Roll harfbuzz-ng 3b8fd9c48f4bde368bf2d465c148b9743a9216ee

third_party/harfbuzz-ng/src/hb-set.h

+/*
+ * Copyright © 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
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_H_IN
+#error "Include <hb.h> instead."
+#endif
+
+#ifndef HB_SET_H
+#define HB_SET_H
+
+#include "hb-common.h"
+
+HB_BEGIN_DECLS
+
+
+typedef struct _hb_set_t hb_set_t;
+
+
+hb_set_t *
+hb_set_create (void);
+
+hb_set_t *
+hb_set_get_empty (void);
+
+hb_set_t *
+hb_set_reference (hb_set_t *set);
+
+void
+hb_set_destroy (hb_set_t *set);
+
+hb_bool_t
+hb_set_set_user_data (hb_set_t           *set,
+                      hb_user_data_key_t *key,
+                      void *              data,
+                      hb_destroy_func_t   destroy,
+                      hb_bool_t           replace);
+
+void *
+hb_set_get_user_data (hb_set_t           *set,
+                      hb_user_data_key_t *key);
+
+
+/* Returns FALSE if allocation has failed before */
+hb_bool_t
+hb_set_allocation_successful (hb_set_t  *set);
+
+void
+hb_set_clear (hb_set_t *set);
+
+hb_bool_t
+hb_set_empty (hb_set_t *set);
+
+hb_bool_t
+hb_set_has (hb_set_t       *set,
+            hb_codepoint_t  codepoint);
+
+/* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
+ * which we will use as a sentinel. */
+void
+hb_set_add (hb_set_t       *set,
+            hb_codepoint_t  codepoint);
+
+void
+hb_set_del (hb_set_t       *set,
+            hb_codepoint_t  codepoint);
+
+hb_bool_t
+hb_set_equal (hb_set_t *set,
+              hb_set_t *other);
+
+void
+hb_set_set (hb_set_t *set,
+            hb_set_t *other);
+
+void
+hb_set_union (hb_set_t *set,
+              hb_set_t *other);
+
+void
+hb_set_intersect (hb_set_t *set,
+                  hb_set_t *other);
+
+void
+hb_set_subtract (hb_set_t *set,
+                 hb_set_t *other);
+
+void
+hb_set_symmetric_difference (hb_set_t *set,
+                             hb_set_t *other);
+
+/* Returns -1 if set empty. */
+hb_codepoint_t
+hb_set_min (hb_set_t *set);
+
+/* Returns -1 if set empty. */
+hb_codepoint_t
+hb_set_max (hb_set_t *set);
+
+/* Pass -1 in to get started. */
+hb_bool_t
+hb_set_next (hb_set_t       *set,
+             hb_codepoint_t *codepoint);
+
+/* TODO: Add faster iteration API? */
+
+
+HB_END_DECLS
+
+#endif /* HB_SET_H */