1 files changed, 21 insertions, 0 deletions
diff --git a/src/symtab.c b/src/symtab.c
index 279fdb9..8fcba3c 100644
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -11,6 +11,12 @@ struct symtab {
 	symval_t val;
 };
 
+struct typetab {
+	typetab_t *child[4];
+	strview_t key;
+	type_t *val;
+};
+
 symval_t *
 symtab_insert(symtab_t **m, strview_t sv, arena_t *a)
 {
@@ -25,3 +31,18 @@ symtab_insert(symtab_t **m, strview_t sv, arena_t *a)
 	(*m)->key = sv;
 	return &(*m)->val;
 }
+
+type_t **
+typetab_insert(typetab_t **m, strview_t sv, arena_t *a)
+{
+	for (uint64_t h = strview_hash(sv); *m; h <<= 2) {
+		if (strview_eq(sv, (*m)->key))
+			return &(*m)->val;
+		m = &(*m)->child[h >> 62];
+	}
+	if (a == NULL)
+		return NULL;
+	*m = arena_new(a, typetab_t, 1);
+	(*m)->key = sv;
+	return &(*m)->val;
+}