1 files changed, 83 insertions, 0 deletions
diff --git a/libdimension/dimension/dictionary.h b/libdimension/dimension/dictionary.h
new file mode 100644
index 0000000..61bce4d
--- /dev/null
+++ b/libdimension/dimension/dictionary.h
@@ -0,0 +1,83 @@
+/*************************************************************************
+ * Copyright (C) 2010 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/**
+ * @file
+ * Simple associative arrays.
+ */
+
+/** A string-object associative array. */
+typedef struct dmnsn_dictionary dmnsn_dictionary;
+
+/**
+ * Allocate a dictionary.
+ * @param[in] obj_size  The size of the objects to store in the dictionary.
+ * @return An empty dictionary.
+ */
+dmnsn_dictionary *dmnsn_new_dictionary(size_t obj_size);
+
+/**
+ * Delete a dictionary.
+ * @param[in,out] dict  The dictionary to delete.
+ */
+void dmnsn_delete_dictionary(dmnsn_dictionary *dict);
+
+/**
+ * Find an element in a dictionary.
+ * @param[in]  dict  The dictionary to search.
+ * @param[in]  key   The key to search for.
+ * @param[out] obj   The location to store the found object.
+ * @return Whether the element was found.
+ */
+bool dmnsn_dictionary_get(const dmnsn_dictionary *dict, const char *key,
+                          void *obj);
+
+/**
+ * Access an element in a dictionary.
+ * @param[in]  dict  The dictionary to search.
+ * @param[in]  key   The key to search for.
+ * @return A pointer to the element if found, otherwise NULL.
+ */
+void *dmnsn_dictionary_at(const dmnsn_dictionary *dict, const char *key);
+
+/**
+ * Insert a (key, value) pair into a dictionary.
+ * @param[in,out] dict  The dictionary to modify.
+ * @param[in]     key   The key to insert.
+ * @param[in]     obj   The object to insert.
+ */
+void dmnsn_dictionary_insert(dmnsn_dictionary *dict, const char *key,
+                             const void *obj);
+
+/**
+ * Remove a (key, value) pair from a dictionary.
+ * @param[in,out] dict  The dictionary to modify.
+ * @param[in]     key   The key to remove.
+ * @return Whether the key existed in the dictionary.
+ */
+bool dmnsn_dictionary_remove(dmnsn_dictionary *dict, const char *key);
+
+/**
+ * Apply a callback to all elements in a dictionary.
+ * @param[in,out] dict      The dictionary.
+ * @param[in]     callback  The callback to apply to the elements.
+ */
+void dmnsn_dictionary_apply(dmnsn_dictionary *dict,
+                            dmnsn_callback_fn *callback);