Hide implementation details of dict in dict-impl.h. Add automatic dependency computat...

[wordgame] / dict-impl.h

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+/*
+ * Copyright © 2006 Carl Worth
+ *
+ * This program is free software; you can redistribute it and\/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA."
+ */
+
+#ifndef _DICT_IMPL_H_
+#define _DICT_IMPL_H_
+
+#include <stdint.h>
+
+#ifndef FALSE
+# define FALSE 0
+#endif
+
+#ifndef TRUE
+# define TRUE 1
+#endif
+
+typedef int bool_t;
+
+typedef struct _string {
+    size_t size;
+    char *s;
+    size_t len;
+} string_t;
+
+void
+string_init (string_t *string);
+
+void
+string_fini (string_t *string);
+
+void
+string_append_char (string_t *string, char c);
+
+void
+string_chop (string_t *string);
+
+void
+chomp (char *s);
+
+#define TRIE_FLAGS_IS_WORD     (1<<0)
+#define TRIE_FLAGS_SEEN                (1<<1)
+
+typedef struct _trie {
+    uint32_t flags;
+    struct _trie *next[26];
+} trie_t;
+
+typedef bool_t
+(*trie_predicate_t) (trie_t *trie);
+
+#define TRIE_CHAR_TO_INDEX(c)  (tolower (c) - 'a')
+#define TRIE_INDEX_TO_CHAR(i)  (i + 'a')
+
+trie_t *
+trie_create (void);
+
+void
+trie_add (trie_t       *trie,
+         const char    *word_chunk);
+
+trie_t *
+trie_find (trie_t      *trie,
+          const char   *word_chunk);
+
+int
+trie_print_seen (trie_t *trie, string_t *word);
+
+int
+trie_print_unseen (trie_t *trie, string_t *word);
+
+struct _dict {
+    trie_t *trie;
+};
+
+#endif /* _DICT_IMPL_H_ */