83 lines
3 KiB
Go
83 lines
3 KiB
Go
|
/*
|
||
|
|
Copyright 2015 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
// deepcopy-gen is a tool for auto-generating DeepCopy functions.
|
||
|
|
//
|
||
|
|
// Given a list of input directories, it will generate functions that
|
||
|
|
// efficiently perform a full deep-copy of each type. For any type that
|
||
|
|
// offers a `.DeepCopy()` method, it will simply call that. Otherwise it will
|
||
|
|
// use standard value assignment whenever possible. If that is not possible it
|
||
|
|
// will try to call its own generated copy function for the type, if the type is
|
||
|
|
// within the allowed root packages. Failing that, it will fall back on
|
||
|
|
// `conversion.Cloner.DeepCopy(val)` to make the copy. The resulting file will
|
||
|
|
// be stored in the same directory as the processed source package.
|
||
|
|
//
|
||
|
|
// Generation is governed by comment tags in the source. Any package may
|
||
|
|
// request DeepCopy generation by including a comment in the file-comments of
|
||
|
|
// one file, of the form:
|
||
|
|
// // +k8s:deepcopy-gen=package
|
||
|
|
//
|
||
|
|
// Packages can request that the generated DeepCopy functions be registered
|
||
|
|
// with an `init()` function call to `Scheme.AddGeneratedDeepCopyFuncs()` by
|
||
|
|
// changing the tag to:
|
||
|
|
// // +k8s:deepcopy-gen=package,register
|
||
|
|
//
|
||
|
|
// DeepCopy functions can be generated for individual types, rather than the
|
||
|
|
// entire package by specifying a comment on the type definion of the form:
|
||
|
|
// // +k8s:deepcopy-gen=true
|
||
|
|
//
|
||
|
|
// When generating for a whole package, individual types may opt out of
|
||
|
|
// DeepCopy generation by specifying a comment on the of the form:
|
||
|
|
// // +k8s:deepcopy-gen=false
|
||
|
|
//
|
||
|
|
// Note that registration is a whole-package option, and is not available for
|
||
|
|
// individual types.
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"path/filepath"
|
||
|
|
|
||
|
|
"k8s.io/gengo/args"
|
||
|
|
"k8s.io/gengo/examples/deepcopy-gen/generators"
|
||
|
|
|
||
|
|
"github.com/golang/glog"
|
||
|
|
"github.com/spf13/pflag"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
arguments := args.Default()
|
||
|
|
|
||
|
|
// Override defaults.
|
||
|
|
arguments.OutputFileBaseName = "deepcopy_generated"
|
||
|
|
arguments.GoHeaderFilePath = filepath.Join(args.DefaultSourceTree(), "k8s.io/kubernetes/hack/boilerplate/boilerplate.go.txt")
|
||
|
|
|
||
|
|
// Custom args.
|
||
|
|
customArgs := &generators.CustomArgs{}
|
||
|
|
pflag.CommandLine.StringSliceVar(&customArgs.BoundingDirs, "bounding-dirs", customArgs.BoundingDirs,
|
||
|
|
"Comma-separated list of import paths which bound the types for which deep-copies will be generated.")
|
||
|
|
arguments.CustomArgs = customArgs
|
||
|
|
|
||
|
|
// Run it.
|
||
|
|
if err := arguments.Execute(
|
||
|
|
generators.NameSystems(),
|
||
|
|
generators.DefaultNameSystem(),
|
||
|
|
generators.Packages,
|
||
|
|
); err != nil {
|
||
|
|
glog.Fatalf("Error: %v", err)
|
||
|
|
}
|
||
|
|
glog.V(2).Info("Completed successfully.")
|
||
|
|
}
|