init

vendor/github.com/awalterschulze/gographviz/catch.go

@@ -0,0 +1,101 @@
+//Copyright 2017 GoGraphviz Authors
+//
+//Licensed under the Apache License, Version 2.0 (the "License");
+//you may not use this file except in compliance with the License.
+//You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+//Unless required by applicable law or agreed to in writing, software
+//distributed under the License is distributed on an "AS IS" BASIS,
+//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//See the License for the specific language governing permissions and
+//limitations under the License.
+
+package gographviz
+
+import (
+	"fmt"
+	"strings"
+)
+
+type errInterface interface {
+	SetStrict(strict bool)
+	SetDir(directed bool)
+	SetName(name string)
+	AddPortEdge(src, srcPort, dst, dstPort string, directed bool, attrs map[string]string)
+	AddEdge(src, dst string, directed bool, attrs map[string]string)
+	AddNode(parentGraph string, name string, attrs map[string]string)
+	AddAttr(parentGraph string, field, value string)
+	AddSubGraph(parentGraph string, name string, attrs map[string]string)
+	String() string
+	getError() error
+}
+
+func newErrCatcher(g Interface) errInterface {
+	return &errCatcher{g, nil}
+}
+
+type errCatcher struct {
+	Interface
+	errs []error
+}
+
+func (e *errCatcher) SetStrict(strict bool) {
+	if err := e.Interface.SetStrict(strict); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) SetDir(directed bool) {
+	if err := e.Interface.SetDir(directed); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) SetName(name string) {
+	if err := e.Interface.SetName(name); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) AddPortEdge(src, srcPort, dst, dstPort string, directed bool, attrs map[string]string) {
+	if err := e.Interface.AddPortEdge(src, srcPort, dst, dstPort, directed, attrs); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) AddEdge(src, dst string, directed bool, attrs map[string]string) {
+	if err := e.Interface.AddEdge(src, dst, directed, attrs); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) AddAttr(parentGraph string, field, value string) {
+	if err := e.Interface.AddAttr(parentGraph, field, value); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) AddSubGraph(parentGraph string, name string, attrs map[string]string) {
+	if err := e.Interface.AddSubGraph(parentGraph, name, attrs); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) AddNode(parentGraph string, name string, attrs map[string]string) {
+	if err := e.Interface.AddNode(parentGraph, name, attrs); err != nil {
+		e.errs = append(e.errs, err)
+	}
+}
+
+func (e *errCatcher) getError() error {
+	if len(e.errs) == 0 {
+		return nil
+	}
+	ss := make([]string, len(e.errs))
+	for i, err := range e.errs {
+		ss[i] = err.Error()
+	}
+	return fmt.Errorf("errors: [%s]", strings.Join(ss, ","))
+}