multichecker.go

Documentation: golang.org/x/tools/go/analysis/multichecker

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package multichecker defines the main function for an analysis driver
     6  // with several analyzers. This package makes it easy for anyone to build
     7  // an analysis tool containing just the analyzers they need.
     8  package multichecker
     9  
    10  import (
    11  	"flag"
    12  	"fmt"
    13  	"log"
    14  	"os"
    15  	"path/filepath"
    16  	"strings"
    17  
    18  	"golang.org/x/tools/go/analysis"
    19  	"golang.org/x/tools/go/analysis/internal/analysisflags"
    20  	"golang.org/x/tools/go/analysis/internal/checker"
    21  	"golang.org/x/tools/go/analysis/unitchecker"
    22  )
    23  
    24  func Main(analyzers ...*analysis.Analyzer) {
    25  	progname := filepath.Base(os.Args[0])
    26  	log.SetFlags(0)
    27  	log.SetPrefix(progname + ": ") // e.g. "vet: "
    28  
    29  	if err := analysis.Validate(analyzers); err != nil {
    30  		log.Fatal(err)
    31  	}
    32  
    33  	checker.RegisterFlags()
    34  
    35  	analyzers = analysisflags.Parse(analyzers, true)
    36  
    37  	args := flag.Args()
    38  	if len(args) == 0 {
    39  		fmt.Fprintf(os.Stderr, `%[1]s is a tool for static analysis of Go programs.
    40  
    41  Usage: %[1]s [-flag] [package]
    42  
    43  Run '%[1]s help' for more detail,
    44   or '%[1]s help name' for details and flags of a specific analyzer.
    45  `, progname)
    46  		os.Exit(1)
    47  	}
    48  
    49  	if args[0] == "help" {
    50  		analysisflags.Help(progname, analyzers, args[1:])
    51  		os.Exit(0)
    52  	}
    53  
    54  	if len(args) == 1 && strings.HasSuffix(args[0], ".cfg") {
    55  		unitchecker.Run(args[0], analyzers)
    56  		panic("unreachable")
    57  	}
    58  
    59  	os.Exit(checker.Run(args, analyzers))
    60  }
    61
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