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// 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.
// Package vet implements the ``go vet'' command.
package vet
import (
"cmd/go/internal/base"
"cmd/go/internal/load"
"cmd/go/internal/modload"
"cmd/go/internal/work"
"path/filepath"
)
var CmdVet = &base.Command{
Run: runVet,
CustomFlags: true,
UsageLine: "go vet [-n] [-x] [build flags] [vet flags] [packages]",
Short: "report likely mistakes in packages",
Long: `
Vet runs the Go vet command on the packages named by the import paths.
For more about vet and its flags, see 'go doc cmd/vet'.
For more about specifying packages, see 'go help packages'.
The -n flag prints commands that would be executed.
The -x flag prints commands as they are executed.
The build flags supported by go vet are those that control package resolution
and execution, such as -n, -x, -v, -tags, and -toolexec.
For more about these flags, see 'go help build'.
See also: go fmt, go fix.
`,
}
func runVet(cmd *base.Command, args []string) {
modload.LoadTests = true
vetFlags, pkgArgs := vetFlags(args)
work.BuildInit()
work.VetFlags = vetFlags
if vetTool != "" {
var err error
work.VetTool, err = filepath.Abs(vetTool)
if err != nil {
base.Fatalf("%v", err)
}
}
pkgs := load.PackagesForBuild(pkgArgs)
if len(pkgs) == 0 {
base.Fatalf("no packages to vet")
}
var b work.Builder
b.Init()
root := &work.Action{Mode: "go vet"}
for _, p := range pkgs {
_, ptest, pxtest, err := load.GetTestPackagesFor(p, nil)
if err != nil {
base.Errorf("%v", err)
continue
}
if len(ptest.GoFiles) == 0 && len(ptest.CgoFiles) == 0 && pxtest == nil {
base.Errorf("go vet %s: no Go files in %s", p.ImportPath, p.Dir)
continue
}
if len(ptest.GoFiles) > 0 || len(ptest.CgoFiles) > 0 {
root.Deps = append(root.Deps, b.VetAction(work.ModeBuild, work.ModeBuild, ptest))
}
if pxtest != nil {
root.Deps = append(root.Deps, b.VetAction(work.ModeBuild, work.ModeBuild, pxtest))
}
}
b.Do(root)
}
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