// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Binary api computes the exported API of a set of Go packages.
package main
import (
"bufio"
"bytes"
"encoding/json"
"flag"
"fmt"
"go/ast"
"go/build"
"go/parser"
"go/token"
"go/types"
exec "internal/execabs"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"regexp"
"runtime"
"sort"
"strings"
"sync"
)
func goCmd() string {
var exeSuffix string
if runtime.GOOS == "windows" {
exeSuffix = ".exe"
}
path := filepath.Join(runtime.GOROOT(), "bin", "go"+exeSuffix)
if _, err := os.Stat(path); err == nil {
return path
}
return "go"
}
// Flags
var (
checkFile = flag.String("c", "", "optional comma-separated filename(s) to check API against")
allowNew = flag.Bool("allow_new", true, "allow API additions")
exceptFile = flag.String("except", "", "optional filename of packages that are allowed to change without triggering a failure in the tool")
nextFile = flag.String("next", "", "optional filename of tentative upcoming API features for the next release. This file can be lazily maintained. It only affects the delta warnings from the -c file printed on success.")
verbose = flag.Bool("v", false, "verbose debugging")
forceCtx = flag.String("contexts", "", "optional comma-separated list of <goos>-<goarch>[-cgo] to override default contexts.")
)
// contexts are the default contexts which are scanned, unless
// overridden by the -contexts flag.
var contexts = []*build.Context{
{GOOS: "linux", GOARCH: "386", CgoEnabled: true},
{GOOS: "linux", GOARCH: "386"},
{GOOS: "linux", GOARCH: "amd64", CgoEnabled: true},
{GOOS: "linux", GOARCH: "amd64"},
{GOOS: "linux", GOARCH: "arm", CgoEnabled: true},
{GOOS: "linux", GOARCH: "arm"},
{GOOS: "darwin", GOARCH: "amd64", CgoEnabled: true},
{GOOS: "darwin", GOARCH: "amd64"},
{GOOS: "windows", GOARCH: "amd64"},
{GOOS: "windows", GOARCH: "386"},
{GOOS: "freebsd", GOARCH: "386", CgoEnabled: true},
{GOOS: "freebsd", GOARCH: "386"},
{GOOS: "freebsd", GOARCH: "amd64", CgoEnabled: true},
{GOOS: "freebsd", GOARCH: "amd64"},
{GOOS: "freebsd", GOARCH: "arm", CgoEnabled: true},
{GOOS: "freebsd", GOARCH: "arm"},
{GOOS: "netbsd", GOARCH: "386", CgoEnabled: true},
{GOOS: "netbsd", GOARCH: "386"},
{GOOS: "netbsd", GOARCH: "amd64", CgoEnabled: true},
{GOOS: "netbsd", GOARCH: "amd64"},
{GOOS: "netbsd", GOARCH: "arm", CgoEnabled: true},
{GOOS: "netbsd", GOARCH: "arm"},
{GOOS: "netbsd", GOARCH: "arm64", CgoEnabled: true},
{GOOS: "netbsd", GOARCH: "arm64"},
{GOOS: "openbsd", GOARCH: "386", CgoEnabled: true},
{GOOS: "openbsd", GOARCH: "386"},
{GOOS: "openbsd", GOARCH: "amd64", CgoEnabled: true},
{GOOS: "openbsd", GOAR