Add gitea-vet (#10948)

* Add copyright

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Add gitea-vet and fix non-compliance

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Combine tools.go into build.go and clean up

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Remove extra GO111MODULE=on

Signed-off-by: jolheiser <john.olheiser@gmail.com>

vendor/golang.org/x/tools/internal/imports/fix.go

@@ -262,7 +262,7 @@ type pass struct {
 
 // loadPackageNames saves the package names for everything referenced by imports.
 func (p *pass) loadPackageNames(imports []*ImportInfo) error {
-	if p.env.Debug {
+	if p.env.Logf != nil {
 		p.env.Logf("loading package names for %v packages", len(imports))
 		defer func() {
 			p.env.Logf("done loading package names for %v packages", len(imports))
@@ -334,7 +334,7 @@ func (p *pass) load() ([]*ImportFix, bool) {
 	if p.loadRealPackageNames {
 		err := p.loadPackageNames(append(imports, p.candidates...))
 		if err != nil {
-			if p.env.Debug {
+			if p.env.Logf != nil {
 				p.env.Logf("loading package names: %v", err)
 			}
 			return nil, false
@@ -528,7 +528,7 @@ func getFixes(fset *token.FileSet, f *ast.File, filename string, env *ProcessEnv
 		return nil, err
 	}
 	srcDir := filepath.Dir(abs)
-	if env.Debug {
+	if env.Logf != nil {
 		env.Logf("fixImports(filename=%q), abs=%q, srcDir=%q ...", filename, abs, srcDir)
 	}
 
@@ -746,7 +746,6 @@ func getPackageExports(ctx context.Context, wrapped func(PackageExport), searchP
 // the go command, the go/build package, etc.
 type ProcessEnv struct {
 	LocalPrefix string
-	Debug       bool
 
 	BuildFlags []string
 
@@ -755,7 +754,7 @@ type ProcessEnv struct {
 	GOPATH, GOROOT, GO111MODULE, GOPROXY, GOFLAGS, GOSUMDB string
 	WorkingDir                                             string
 
-	// Logf is the default logger for the ProcessEnv.
+	// If Logf is non-nil, debug logging is enabled through this function.
 	Logf func(format string, args ...interface{})
 
 	resolver Resolver
@@ -1238,7 +1237,7 @@ func (r *gopathResolver) scan(ctx context.Context, callback *scanCallback) error
 		case <-r.scanSema:
 		}
 		defer func() { r.scanSema <- struct{}{} }()
-		gopathwalk.Walk(roots, add, gopathwalk.Options{Debug: r.env.Debug, ModulesEnabled: false})
+		gopathwalk.Walk(roots, add, gopathwalk.Options{Logf: r.env.Logf, ModulesEnabled: false})
 		close(scanDone)
 	}()
 	select {
@@ -1342,7 +1341,7 @@ func loadExportsFromFiles(ctx context.Context, env *ProcessEnv, dir string, incl
 		}
 	}
 
-	if env.Debug {
+	if env.Logf != nil {
 		sortedExports := append([]string(nil), exports...)
 		sort.Strings(sortedExports)
 		env.Logf("loaded exports in dir %v (package %v): %v", dir, pkgName, strings.Join(sortedExports, ", "))
@@ -1358,7 +1357,7 @@ func findImport(ctx context.Context, pass *pass, candidates []pkgDistance, pkgNa
 	// ones.  Note that this sorts by the de-vendored name, so
 	// there's no "penalty" for vendoring.
 	sort.Sort(byDistanceOrImportPathShortLength(candidates))
-	if pass.env.Debug {
+	if pass.env.Logf != nil {
 		for i, c := range candidates {
 			pass.env.Logf("%s candidate %d/%d: %v in %v", pkgName, i+1, len(candidates), c.pkg.importPathShort, c.pkg.dir)
 		}
@@ -1396,14 +1395,14 @@ func findImport(ctx context.Context, pass *pass, candidates []pkgDistance, pkgNa
 					wg.Done()
 				}()
 
-				if pass.env.Debug {
+				if pass.env.Logf != nil {
 					pass.env.Logf("loading exports in dir %s (seeking package %s)", c.pkg.dir, pkgName)
 				}
 				// If we're an x_test, load the package under test's test variant.
 				includeTest := strings.HasSuffix(pass.f.Name.Name, "_test") && c.pkg.dir == pass.srcDir
 				_, exports, err := pass.env.GetResolver().loadExports(ctx, c.pkg, includeTest)
 				if err != nil {
-					if pass.env.Debug {
+					if pass.env.Logf != nil {
 						pass.env.Logf("loading exports in dir %s (seeking package %s): %v", c.pkg.dir, pkgName, err)
 					}
 					resc <- nil

vendor/golang.org/x/tools/internal/imports/imports.go

@@ -21,7 +21,6 @@ import (
 	"go/token"
 	"io"
 	"io/ioutil"
-	"log"
 	"os"
 	"regexp"
 	"strconv"
@@ -155,12 +154,6 @@ func initialize(filename string, src []byte, opt *Options) ([]byte, *Options, er
 			GOSUMDB:     os.Getenv("GOSUMDB"),
 		}
 	}
-
-	// Set the logger if the user has not provided it.
-	if opt.Env.Logf == nil {
-		opt.Env.Logf = log.Printf
-	}
-
 	if src == nil {
 		b, err := ioutil.ReadFile(filename)
 		if err != nil {

vendor/golang.org/x/tools/internal/imports/mod.go

@@ -156,7 +156,7 @@ func (r *ModuleResolver) initAllMods() error {
 			return err
 		}
 		if mod.Dir == "" {
-			if r.env.Debug {
+			if r.env.Logf != nil {
 				r.env.Logf("module %v has not been downloaded and will be ignored", mod.Path)
 			}
 			// Can't do anything with a module that's not downloaded.
@@ -470,7 +470,7 @@ func (r *ModuleResolver) scan(ctx context.Context, callback *scanCallback) error
 			if r.scannedRoots[root] {
 				continue
 			}
-			gopathwalk.WalkSkip([]gopathwalk.Root{root}, add, skip, gopathwalk.Options{Debug: r.env.Debug, ModulesEnabled: true})
+			gopathwalk.WalkSkip([]gopathwalk.Root{root}, add, skip, gopathwalk.Options{Logf: r.env.Logf, ModulesEnabled: true})
 			r.scannedRoots[root] = true
 		}
 		close(scanDone)
@@ -583,7 +583,7 @@ func (r *ModuleResolver) scanDirForPackage(root gopathwalk.Root, dir string) dir
 		}
 		modPath, err := module.UnescapePath(filepath.ToSlash(matches[1]))
 		if err != nil {
-			if r.env.Debug {
+			if r.env.Logf != nil {
 				r.env.Logf("decoding module cache path %q: %v", subdir, err)
 			}
 			return directoryPackageInfo{