github.com/hlts2/go@v0.0.0-20170904000733-812b34efaed8/src/cmd/go/internal/vet/vet.go (about)

     1  // Copyright 2011 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 vet implements the ``go vet'' command.
     6  package vet
     7  
     8  import (
     9  	"path/filepath"
    10  
    11  	"cmd/go/internal/base"
    12  	"cmd/go/internal/cfg"
    13  	"cmd/go/internal/load"
    14  	"cmd/go/internal/str"
    15  )
    16  
    17  var CmdVet = &base.Command{
    18  	Run:         runVet,
    19  	CustomFlags: true,
    20  	UsageLine:   "vet [-n] [-x] [build flags] [vet flags] [packages]",
    21  	Short:       "run go tool vet on packages",
    22  	Long: `
    23  Vet runs the Go vet command on the packages named by the import paths.
    24  
    25  For more about vet and its flags, see 'go doc cmd/vet'.
    26  For more about specifying packages, see 'go help packages'.
    27  
    28  The -n flag prints commands that would be executed.
    29  The -x flag prints commands as they are executed.
    30  
    31  The build flags supported by go vet are those that control package resolution
    32  and execution, such as -n, -x, -v, -tags, and -toolexec.
    33  For more about these flags, see 'go help build'.
    34  
    35  See also: go fmt, go fix.
    36  	`,
    37  }
    38  
    39  func runVet(cmd *base.Command, args []string) {
    40  	vetFlags, packages := vetFlags(args)
    41  	for _, p := range load.Packages(packages) {
    42  		// Vet expects to be given a set of files all from the same package.
    43  		// Run once for package p and once for package p_test.
    44  		if len(p.GoFiles)+len(p.CgoFiles)+len(p.TestGoFiles) > 0 {
    45  			runVetFiles(p, vetFlags, str.StringList(p.GoFiles, p.CgoFiles, p.TestGoFiles, p.SFiles))
    46  		}
    47  		if len(p.XTestGoFiles) > 0 {
    48  			runVetFiles(p, vetFlags, str.StringList(p.XTestGoFiles))
    49  		}
    50  	}
    51  }
    52  
    53  func runVetFiles(p *load.Package, flags, files []string) {
    54  	for i := range files {
    55  		files[i] = filepath.Join(p.Dir, files[i])
    56  	}
    57  	base.Run(cfg.BuildToolexec, base.Tool("vet"), flags, base.RelPaths(files))
    58  }