80 lines
2.9 KiB
Go
80 lines
2.9 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// conversion-gen is a tool for auto-generating Conversion functions.
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//
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// Given a list of input directories, it will scan for "peer" packages and
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// generate functions that efficiently convert between same-name types in each
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// package. For any pair of types that has a
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// `Convert_<pkg1>_<type>_To_<pkg2>_<Type()`
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// function (and its reciprocal), it will simply call that. use standard value
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// assignment whenever possible. The resulting file will be stored in the same
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// directory as the processed source package.
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//
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// Generation is governed by comment tags in the source. Any package may
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// request Conversion generation by including a comment in the file-comments of
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// one file, of the form:
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// // +k8s:conversion-gen=<import-path-of-peer-package>
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//
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// When generating for a package, individual types or fields of structs may opt
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// out of Conversion generation by specifying a comment on the of the form:
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// // +k8s:conversion-gen=false
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package main
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import (
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"path/filepath"
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"k8s.io/gengo/args"
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"k8s.io/kubernetes/cmd/libs/go2idl/conversion-gen/generators"
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"github.com/golang/glog"
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"github.com/spf13/pflag"
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)
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func main() {
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arguments := args.Default()
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// Override defaults.
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arguments.OutputFileBaseName = "conversion_generated"
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arguments.GoHeaderFilePath = filepath.Join(args.DefaultSourceTree(), "k8s.io/kubernetes/hack/boilerplate/boilerplate.go.txt")
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// Custom args.
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customArgs := &generators.CustomArgs{
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ExtraPeerDirs: []string{
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"k8s.io/kubernetes/pkg/api",
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"k8s.io/kubernetes/pkg/api/v1",
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"k8s.io/apimachinery/pkg/apis/meta/v1",
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"k8s.io/apimachinery/pkg/conversion",
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"k8s.io/apimachinery/pkg/runtime",
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},
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SkipUnsafe: false,
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}
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pflag.CommandLine.StringSliceVar(&customArgs.ExtraPeerDirs, "extra-peer-dirs", customArgs.ExtraPeerDirs,
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"Comma-separated list of import paths which are considered, after tag-specified peers, for conversions.")
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pflag.CommandLine.BoolVar(&customArgs.SkipUnsafe, "skip-unsafe", customArgs.SkipUnsafe,
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"If true, will not generate code using unsafe pointer conversions; resulting code may be slower.")
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arguments.CustomArgs = customArgs
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// Run it.
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if err := arguments.Execute(
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generators.NameSystems(),
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generators.DefaultNameSystem(),
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generators.Packages,
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); err != nil {
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glog.Fatalf("Error: %v", err)
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}
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glog.V(2).Info("Completed successfully.")
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}
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