+typedef struct const_type {
+ token_t type;
+ char *name;
+} const_type;
+
+static inline const_type *init_const_type(token_t type, const char *name) {
+ const_type *ct = malloc(sizeof(*ct));
+ ct->type = type;
+ ct->name = strdup(name);
+ return ct;
+}
+
+static inline void free_const_type(const_type *type) {
+ free(type->name);
+ free(type);
+}
+
+typedef struct constant {
+ const_type *type;
+ char *name;
+ impl_def_val *val;
+} constant;
+
+static inline constant *init_constant(const_type *type, char *name, impl_def_val *val) {
+ constant *c = malloc(sizeof(*c));
+ c->type = type;
+ c->name = strdup(name);
+ c->val = val;
+ return c;
+}
+
+static inline void free_constant(constant *constant) {
+ free_const_type(constant->type);
+ free(constant->name);
+ free_impl_def_val(constant->val);
+ free(constant);
+}
+
+typedef struct constants {
+ size_t count;
+ constant **list;
+} constants;
+
+static inline constants *add_constant(constants *constants, constant *constant) {
+ if (!constants) {
+ constants = calloc(1, sizeof(*constants));
+ }
+ constants->list = realloc(constants->list, ++constants->count * sizeof(*constants->list));
+ constants->list[constants->count-1] = constant;
+ return constants;
+}
+
+static inline void free_constants(constants *c) {
+ size_t i;
+
+ for (i = 0; i < c->count; ++i) {
+ free_constant(c->list[i]);
+ }
+ free(c->list);
+ free(c);
+}
+