Add bounds check for array access (#44)

tonyhb · web-flow · commit 80f2fb8c3d7a · 2026-02-26T16:56:34.000-08:00
diff --git a/parser.go b/parser.go
@@ -811,6 +811,12 @@ func parseArrayAccess(item celast.Expr) string {
 		return ""
 	}
 	args := item.AsCall().Args()
+	if len(args) < 2 {
+		return ""
+	}
+	if args[1].Kind() != celast.LiteralKind {
+		return ""
+	}
 	return fmt.Sprintf("%s[%v]", walkSelect(args[0]), args[1].AsLiteral().Value())
 }
 

Original file line number	Diff line number	Diff line change
`@@ -811,6 +811,12 @@ func parseArrayAccess(item celast.Expr) string {`
`811`	`811`	`return ""`
`812`	`812`	`}`
`813`	`813`	`args := item.AsCall().Args()`
	`814`	`+ if len(args) < 2 {`
	`815`	`+ return ""`
	`816`	`+ }`
	`817`	`+ if args[1].Kind() != celast.LiteralKind {`
	`818`	`+ return ""`
	`819`	`+ }`
`814`	`820`	`return fmt.Sprintf("%s[%v]", walkSelect(args[0]), args[1].AsLiteral().Value())`
`815`	`821`	`}`
`816`	`822`