Add constrain to let parsing either type or value must be present

1 files changed, 6 insertions, 0 deletions

diff --git a/src/parser.c b/src/parser.c
index 7864264..9079df9 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -521,6 +521,12 @@ parse_keyword(Parser *parser) {
                 parse_expr(parser, PREC_LOW);
                 node->var_val = array_pop(parser->nodes);
             }
+
+            if (node->var_type == NULL && node->var_val == NULL) {
+                parse_emit_err(parser, prev,
+                               cstr("variable declaration must include type or "
+                                    "value information"));
+            }
         } break;
         case TOK_SET: {
             node = node_alloc(parser, NODE_SET, prev);