Require extern functions to be declared

1 files changed, 3 insertions, 0 deletions

diff --git a/token.go b/token.go
index 42c8041..b1e2dd8 100644
--- a/token.go
+++ b/token.go
@@ -100,6 +100,8 @@ func (k tokenKind) String() string {
 		return "number"
 	case export:
 		return "export"
+	case extern:
+		return "extern"
 	case function:
 		return "func"
 	case ret:
@@ -161,6 +163,7 @@ const (
 	str
 	number
 	export
+	extern
 	function
 	ret
 	constKeyword