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// Copyright 2019 Google LLC
//
// 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.
// go_marshal is a code generation utility for automatically generating code to
// marshal go data structures to memory.
//
// This binary is typically run as part of the build process, and is invoked by
// the go_marshal bazel rule defined in defs.bzl.
//
// See README.md.
package main
import (
"flag"
"fmt"
"os"
"strings"
"gvisor.dev/gvisor/tools/go_marshal/gomarshal"
)
var (
pkg = flag.String("pkg", "", "output package")
output = flag.String("output", "", "output file")
outputTest = flag.String("output_test", "", "output file for tests")
imports = flag.String("imports", "", "comma-separated list of extra packages to import in generated code")
declarationPkg = flag.String("declarationPkg", "", "import path of target declaring the types we're generating on")
)
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s <input go src files>\n", os.Args[0])
flag.PrintDefaults()
}
flag.Parse()
if len(flag.Args()) == 0 {
flag.Usage()
os.Exit(1)
}
if *pkg == "" {
flag.Usage()
fmt.Fprint(os.Stderr, "Flag -pkg must be provided.\n")
os.Exit(1)
}
var extraImports []string
if len(*imports) > 0 {
// Note: strings.Split(s, sep) returns s if sep doesn't exist in s. Thus
// we check for an empty imports list to avoid emitting an empty string
// as an import.
extraImports = strings.Split(*imports, ",")
}
g, err := gomarshal.NewGenerator(flag.Args(), *output, *outputTest, *pkg, *declarationPkg, extraImports)
if err != nil {
panic(err)
}
if err := g.Run(); err != nil {
panic(err)
}
}
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