diff --git a/parser/lexer_error.go b/parser/lexer_error.go
new file mode 100644
index 0000000..9eaa98b
--- /dev/null
+++ b/parser/lexer_error.go
@@ -0,0 +1,15 @@
+package parser
+
+import "asciigoat.org/core/lexer"
+
+func (p *Parser) emitError(content string, err error) (lexer.StateFn, error) {
+	err2 := p.OnError(p.pos, content, err)
+	switch {
+	case err2 != nil:
+		// return wrapped error
+		return nil, err2
+	default:
+		// return original error
+		return nil, err
+	}
+}