feat(goctl): Add api parser (#2585)

tools/goctl/pkg/parser/api/parser/error.go

@@ -0,0 +1,28 @@
+package parser
+
+import (
+	"fmt"
+	"strings"
+)
+
+type errorManager struct {
+	errors []string
+}
+
+func newErrorManager() *errorManager {
+	return &errorManager{}
+}
+
+func (e *errorManager) add(err error) {
+	if err == nil {
+		return
+	}
+	e.errors = append(e.errors, err.Error())
+}
+
+func (e *errorManager) error() error {
+	if len(e.errors)==0{
+		return nil
+	}
+	return fmt.Errorf(strings.Join(e.errors, "\n"))
+}