fix #703

@@ -65,11 +65,13 @@ func parserPkg(pkgRealpath, pkgpath string) error {
 			for _, d := range fl.Decls {
 			for _, d := range fl.Decls {
 				switch specDecl := d.(type) {
 				switch specDecl := d.(type) {
 				case *ast.FuncDecl:
 				case *ast.FuncDecl:
+					if specDecl.Recv != nil {
 						parserComments(specDecl.Doc, specDecl.Name.String(), fmt.Sprint(specDecl.Recv.List[0].Type.(*ast.StarExpr).X), pkgpath)
 						parserComments(specDecl.Doc, specDecl.Name.String(), fmt.Sprint(specDecl.Recv.List[0].Type.(*ast.StarExpr).X), pkgpath)
 					}
 					}
 				}
 				}
 			}
 			}
 		}
 		}
+	}
 	genRouterCode()
 	genRouterCode()
 	savetoFile(pkgRealpath)
 	savetoFile(pkgRealpath)
 	return nil
 	return nil