60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package multichecker defines the main function for an analysis driver
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// with several analyzers. This package makes it easy for anyone to build
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// an analysis tool containing just the analyzers they need.
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package multichecker
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"path/filepath"
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"golang.org/x/tools/go/analysis"
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"golang.org/x/tools/go/analysis/internal/analysisflags"
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"golang.org/x/tools/go/analysis/internal/checker"
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)
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// TODO(adonovan): document (and verify) the exit codes:
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// "Vet's exit code is 2 for erroneous invocation of the tool, 1 if a
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// problem was reported, and 0 otherwise. Note that the tool does not
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// check every possible problem and depends on unreliable heuristics
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// so it should be used as guidance only, not as a firm indicator of
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// program correctness."
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func Main(analyzers ...*analysis.Analyzer) {
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progname := filepath.Base(os.Args[0])
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log.SetFlags(0)
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log.SetPrefix(progname + ": ") // e.g. "vet: "
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if err := analysis.Validate(analyzers); err != nil {
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log.Fatal(err)
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}
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checker.RegisterFlags()
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analyzers = analysisflags.Parse(analyzers, true)
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args := flag.Args()
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if len(args) == 0 {
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analysisflags.PrintUsage(os.Stderr)
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fmt.Fprintf(os.Stderr, "Run '%[1]s help' for more detail,\n"+
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" or '%[1]s help name' for details and flags of a specific analyzer.\n",
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progname)
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os.Exit(1)
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}
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if args[0] == "help" {
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analysisflags.Help(progname, analyzers, args[1:])
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os.Exit(0)
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}
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if err := checker.Run(args, analyzers); err != nil {
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log.Fatal(err)
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}
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}
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