Remove map_exists().

Author: rui314

parse.c

@@ -29,16 +29,20 @@ static Env *new_env(Env *next) {
 }
 
 static Type *find_typedef(char *name) {
-  for (Env *e = env; e; e = e->next)
-    if (map_exists(e->typedefs, name))
-      return map_get(e->typedefs, name);
+  for (Env *e = env; e; e = e->next) {
+    Type *ty = map_get(e->typedefs, name);
+    if (ty)
+      return ty;
+  }
   return NULL;
 }
 
 static Type *find_tag(char *name) {
-  for (Env *e = env; e; e = e->next)
-    if (map_exists(e->tags, name))
-      return map_get(e->tags, name);
+  for (Env *e = env; e; e = e->next) {
+    Type *ty = map_get(e->tags, name);
+    if (ty)
+      return ty;
+  }
   return NULL;
 }
 

util.c

@@ -63,13 +63,6 @@ int map_geti(Map *map, char *key, int default_) {
   return default_;
 }
 
-bool map_exists(Map *map, char *key) {
-  for (int i = map->keys->len - 1; i >= 0; i--)
-    if (!strcmp(map->keys->data[i], key))
-      return true;
-  return false;
-}
-
 StringBuilder *new_sb(void) {
   StringBuilder *sb = malloc(sizeof(StringBuilder));
   sb->data = malloc(8);

util_test.c

@@ -43,9 +43,6 @@ static void map_test() {
 
   map_put(map, "foo", (void *)6);
   expect(__LINE__, 6, (intptr_t)map_get(map, "foo"));
-
-  expect(__LINE__, true, map_exists(map, "foo"));
-  expect(__LINE__, false, map_exists(map, "baz"));
 }
 
 static void sb_test() {