feature: refactor api parse to g4 (#365)

* feature: refactor api parse to g4

* new g4 parser

* add CHANGE_LOG.MD

* refactor

* fix byte bug

* refactor

* optimized

* optimized

* revert

* update readme.md

* update readme.md

* update readme.md

* update readme.md

* remove no need

* fix java gen

* add upgrade

* resolve confilits

Co-authored-by: anqiansong <anqiansong@xiaoheiban.cn>

tools/goctl/api/dartgen/gen.go

@@ -19,11 +19,7 @@ func DartCommand(c *cli.Context) error {
 		return errors.New("missing -dir")
 	}
 
-	p, err := parser.NewParser(apiFile)
-	if err != nil {
-		return err
-	}
-	api, err := p.Parse()
+	api, err := parser.Parse(apiFile)
 	if err != nil {
 		return err
 	}

tools/goctl/api/dartgen/gendata.go

@@ -59,7 +59,6 @@ func genData(dir string, api *spec.ApiSpec) error {
 		return e
 	}
 
-	convertMemberType(api)
 	return t.Execute(file, api)
 }
 

tools/goctl/api/dartgen/util.go

@@ -1,12 +1,10 @@
 package dartgen
 
 import (
-	"log"
 	"os"
 	"reflect"
 	"strings"
 
-	"github.com/tal-tech/go-zero/tools/goctl/api/spec"
 	"github.com/tal-tech/go-zero/tools/goctl/api/util"
 )
 
@@ -39,47 +37,6 @@ func tagGet(tag, k string) (reflect.Value, error) {
 	return reflect.ValueOf(out), nil
 }
 
-func convertMemberType(api *spec.ApiSpec) {
-	for i, t := range api.Types {
-		for j, mem := range t.Members {
-			api.Types[i].Members[j].Type = goTypeToDart(mem.Type)
-		}
-	}
-}
-
-func goTypeToDart(t string) string {
-	t = strings.Replace(t, "*", "", -1)
-	if strings.HasPrefix(t, "[]") {
-		return "List<" + goTypeToDart(t[2:]) + ">"
-	}
-
-	if strings.HasPrefix(t, "map") {
-		tys, e := util.DecomposeType(t)
-		if e != nil {
-			log.Fatal(e)
-		}
-
-		if len(tys) != 2 {
-			log.Fatal("Map type number !=2")
-		}
-
-		return "Map<String," + goTypeToDart(tys[1]) + ">"
-	}
-
-	switch t {
-	case "string":
-		return "String"
-	case "int", "int32", "int64":
-		return "int"
-	case "float", "float32", "float64":
-		return "double"
-	case "bool":
-		return "bool"
-	default:
-		return t
-	}
-}
-
 func isDirectType(s string) bool {
 	return isAtomicType(s) || isListType(s) && isAtomicType(getCoreType(s))
 }