Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/pkg/kubectl/explain/field_lookup.go

@@ -0,0 +1,107 @@
+/*
+Copyright 2017 The Kubernetes 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 explain
+
+import (
+	"fmt"
+
+	"k8s.io/kube-openapi/pkg/util/proto"
+)
+
+// fieldLookup walks through a schema by following a path, and returns
+// the final schema.
+type fieldLookup struct {
+	// Path to walk
+	Path []string
+
+	// Return information: Schema found, or error.
+	Schema proto.Schema
+	Error  error
+}
+
+// SaveLeafSchema is used to detect if we are done walking the path, and
+// saves the schema as a match.
+func (f *fieldLookup) SaveLeafSchema(schema proto.Schema) bool {
+	if len(f.Path) != 0 {
+		return false
+	}
+
+	f.Schema = schema
+
+	return true
+}
+
+// VisitArray is mostly a passthrough.
+func (f *fieldLookup) VisitArray(a *proto.Array) {
+	if f.SaveLeafSchema(a) {
+		return
+	}
+
+	// Passthrough arrays.
+	a.SubType.Accept(f)
+}
+
+// VisitMap is mostly a passthrough.
+func (f *fieldLookup) VisitMap(m *proto.Map) {
+	if f.SaveLeafSchema(m) {
+		return
+	}
+
+	// Passthrough maps.
+	m.SubType.Accept(f)
+}
+
+// VisitPrimitive stops the operation and returns itself as the found
+// schema, even if it had more path to walk.
+func (f *fieldLookup) VisitPrimitive(p *proto.Primitive) {
+	// Even if Path is not empty (we're not expecting a leaf),
+	// return that primitive.
+	f.Schema = p
+}
+
+// VisitKind unstacks fields as it finds them.
+func (f *fieldLookup) VisitKind(k *proto.Kind) {
+	if f.SaveLeafSchema(k) {
+		return
+	}
+
+	subSchema, ok := k.Fields[f.Path[0]]
+	if !ok {
+		f.Error = fmt.Errorf("field %q does not exist", f.Path[0])
+		return
+	}
+
+	f.Path = f.Path[1:]
+	subSchema.Accept(f)
+}
+
+// VisitReference is mostly a passthrough.
+func (f *fieldLookup) VisitReference(r proto.Reference) {
+	if f.SaveLeafSchema(r) {
+		return
+	}
+
+	// Passthrough references.
+	r.SubSchema().Accept(f)
+}
+
+// LookupSchemaForField looks for the schema of a given path in a base schema.
+func LookupSchemaForField(schema proto.Schema, path []string) (proto.Schema, error) {
+	f := &fieldLookup{Path: path}
+	schema.Accept(f)
+	return f.Schema, f.Error
+}