proper equality for values; deduplicate constants in compilation

1 files changed, 11 insertions, 0 deletions

diff --git a/val.c b/val.c
index 19f96a0..5a20d09 100644
--- a/val.c
+++ b/val.c
@@ -81,6 +81,17 @@ bool is_truthy(Val v) {
 	return true;
 }
 
+bool val_equal(Val a, Val b) {
+	if (a.ty != b.ty) return false;
+	switch (a.ty) {
+	case TY_NIL: return true;
+	case TY_NUM: return AS_NUM(a) == AS_NUM(b);
+	case TY_BOOL: return AS_BOOL(a) == AS_BOOL(b);
+	case TY_OBJ: return AS_OBJ(a) == AS_OBJ(b);
+	default: return false;
+	}
+}
+
 
 const char *typename_str(Val v) {
 	switch(v.ty) {