chore: update code format. (#628)

tools/goctl/api/parser/g4/ast/apiparser.go

@@ -175,7 +175,7 @@ func (p *Parser) valid(mainApi *Api, nestedApi *Api) error {
 		for _, g := range list {
 			handler := g.GetHandler()
 			if handler.IsNotNil() {
-				var handlerName = handler.Text()
+				handlerName := handler.Text()
 				handlerMap[handlerName] = Holder
 				path := fmt.Sprintf("%s://%s", g.Route.Method.Text(), g.Route.Path.Text())
 				routeMap[path] = Holder

tools/goctl/api/parser/g4/ast/ast.go

@@ -289,7 +289,7 @@ func (v *ApiVisitor) getHiddenTokensToLeft(t TokenStream, channel int, containsC
 
 			if index > 0 {
 				allTokens := ct.GetAllTokens()
-				var flag = false
+				flag := false
 				for i := index; i >= 0; i-- {
 					tk := allTokens[i]
 					if tk.GetChannel() == antlr.LexerDefaultTokenChannel {

tools/goctl/api/parser/g4/ast/type.go

@@ -128,7 +128,6 @@ func (v *ApiVisitor) VisitTypeBlock(ctx *api.TypeBlockContext) interface{} {
 	var types []TypeExpr
 	for _, each := range list {
 		types = append(types, each.Accept(v).(TypeExpr))
-
 	}
 	return types
 }
@@ -155,7 +154,6 @@ func (v *ApiVisitor) VisitTypeStruct(ctx *api.TypeStructContext) interface{} {
 	st.Name = v.newExprWithToken(ctx.GetStructName())
 
 	if util.UnExport(ctx.GetStructName().GetText()) {
-
 	}
 	if ctx.GetStructToken() != nil {
 		structExpr := v.newExprWithToken(ctx.GetStructToken())