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// Copyright 2018 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.
// Package multichecker defines the main function for an analysis driver
// with several analyzers. This package makes it easy for anyone to build
// an analysis tool containing just the analyzers they need.
package multichecker
import (
"flag"
"fmt"
"log"
"os"
"path/filepath"
"strings"
"golang.org/x/tools/go/analysis"
"golang.org/x/tools/go/analysis/internal/analysisflags"
"golang.org/x/tools/go/analysis/internal/checker"
"golang.org/x/tools/go/analysis/unitchecker"
)
func Main(analyzers ...*analysis.Analyzer) {
progname := filepath.Base(os.Args[0])
log.SetFlags(0)
log.SetPrefix(progname + ": ") // e.g. "vet: "
if err := analysis.Validate(analyzers); err != nil {
log.Fatal(err)
}
checker.RegisterFlags()
analyzers = analysisflags.Parse(analyzers, true)
args := flag.Args()
if len(args) == 0 {
fmt.Fprintf(os.Stderr, `%[1]s is a tool for static analysis of Go programs.
Usage: %[1]s [-flag] [package]
Run '%[1]s help' for more detail,
or '%[1]s help name' for details and flags of a specific analyzer.
`, progname)
os.Exit(1)
}
if args[0] == "help" {
analysisflags.Help(progname, analyzers, args[1:])
os.Exit(0)
}
if len(args) == 1 && strings.HasSuffix(args[0], ".cfg") {
unitchecker.Run(args[0], analyzers)
panic("unreachable")
}
os.Exit(checker.Run(args, analyzers))
}
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