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https://github.com/go-gitea/gitea
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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>
This commit is contained in:
John Olheiser
GitHub
396
vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
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396
vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
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// 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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// The unitchecker package defines the main function for an analysis
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// driver that analyzes a single compilation unit during a build.
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// It is invoked by a build system such as "go vet":
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//
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// $ go vet -vettool=$(which vet)
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//
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// It supports the following command-line protocol:
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//
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// -V=full describe executable (to the build tool)
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// -flags describe flags (to the build tool)
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// foo.cfg description of compilation unit (from the build tool)
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//
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// This package does not depend on go/packages.
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// If you need a standalone tool, use multichecker,
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// which supports this mode but can also load packages
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// from source using go/packages.
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package unitchecker
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// TODO(adonovan):
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// - with gccgo, go build does not build standard library,
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// so we will not get to analyze it. Yet we must in order
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// to create base facts for, say, the fmt package for the
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// printf checker.
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import (
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"encoding/gob"
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"encoding/json"
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"flag"
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"fmt"
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"go/ast"
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"go/build"
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"go/importer"
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"go/parser"
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"go/token"
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"go/types"
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"io"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"reflect"
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"sort"
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"strings"
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"sync"
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"time"
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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/facts"
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)
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// A Config describes a compilation unit to be analyzed.
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// It is provided to the tool in a JSON-encoded file
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// whose name ends with ".cfg".
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type Config struct {
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ID string // e.g. "fmt [fmt.test]"
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Compiler string
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Dir string
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ImportPath string
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GoFiles []string
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NonGoFiles []string
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ImportMap map[string]string
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PackageFile map[string]string
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Standard map[string]bool
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PackageVetx map[string]string
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VetxOnly bool
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VetxOutput string
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SucceedOnTypecheckFailure bool
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}
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// Main is the main function of a vet-like analysis tool that must be
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// invoked by a build system to analyze a single package.
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//
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// The protocol required by 'go vet -vettool=...' is that the tool must support:
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//
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// -flags describe flags in JSON
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// -V=full describe executable for build caching
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// foo.cfg perform separate modular analyze on the single
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// unit described by a JSON config file foo.cfg.
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//
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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 + ": ")
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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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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, `%[1]s is a tool for static analysis of Go programs.
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Usage of %[1]s:
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%.16[1]s unit.cfg # execute analysis specified by config file
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%.16[1]s help # general help
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%.16[1]s help name # help on specific analyzer and its flags
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`, progname)
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os.Exit(1)
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}
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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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flag.Usage()
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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 len(args) != 1 || !strings.HasSuffix(args[0], ".cfg") {
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log.Fatalf(`invoking "go tool vet" directly is unsupported; use "go vet"`)
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}
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Run(args[0], analyzers)
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}
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// Run reads the *.cfg file, runs the analysis,
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// and calls os.Exit with an appropriate error code.
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// It assumes flags have already been set.
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func Run(configFile string, analyzers []*analysis.Analyzer) {
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cfg, err := readConfig(configFile)
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if err != nil {
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log.Fatal(err)
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}
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fset := token.NewFileSet()
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results, err := run(fset, cfg, analyzers)
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if err != nil {
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log.Fatal(err)
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}
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// In VetxOnly mode, the analysis is run only for facts.
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if !cfg.VetxOnly {
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if analysisflags.JSON {
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// JSON output
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tree := make(analysisflags.JSONTree)
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for _, res := range results {
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tree.Add(fset, cfg.ID, res.a.Name, res.diagnostics, res.err)
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}
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tree.Print()
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} else {
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// plain text
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exit := 0
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for _, res := range results {
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if res.err != nil {
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log.Println(res.err)
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exit = 1
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}
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}
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for _, res := range results {
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for _, diag := range res.diagnostics {
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analysisflags.PrintPlain(fset, diag)
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exit = 1
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}
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}
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os.Exit(exit)
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}
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}
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os.Exit(0)
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}
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func readConfig(filename string) (*Config, error) {
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data, err := ioutil.ReadFile(filename)
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if err != nil {
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return nil, err
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}
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cfg := new(Config)
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if err := json.Unmarshal(data, cfg); err != nil {
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return nil, fmt.Errorf("cannot decode JSON config file %s: %v", filename, err)
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}
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if len(cfg.GoFiles) == 0 {
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// The go command disallows packages with no files.
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// The only exception is unsafe, but the go command
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// doesn't call vet on it.
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return nil, fmt.Errorf("package has no files: %s", cfg.ImportPath)
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}
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return cfg, nil
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}
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var importerForCompiler = func(_ *token.FileSet, compiler string, lookup importer.Lookup) types.Importer {
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// broken legacy implementation (https://golang.org/issue/28995)
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return importer.For(compiler, lookup)
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}
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func run(fset *token.FileSet, cfg *Config, analyzers []*analysis.Analyzer) ([]result, error) {
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// Load, parse, typecheck.
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var files []*ast.File
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for _, name := range cfg.GoFiles {
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f, err := parser.ParseFile(fset, name, nil, parser.ParseComments)
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if err != nil {
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if cfg.SucceedOnTypecheckFailure {
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// Silently succeed; let the compiler
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// report parse errors.
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err = nil
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}
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return nil, err
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}
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files = append(files, f)
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}
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compilerImporter := importerForCompiler(fset, cfg.Compiler, func(path string) (io.ReadCloser, error) {
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// path is a resolved package path, not an import path.
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file, ok := cfg.PackageFile[path]
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if !ok {
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if cfg.Compiler == "gccgo" && cfg.Standard[path] {
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return nil, nil // fall back to default gccgo lookup
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}
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return nil, fmt.Errorf("no package file for %q", path)
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}
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return os.Open(file)
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})
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importer := importerFunc(func(importPath string) (*types.Package, error) {
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path, ok := cfg.ImportMap[importPath] // resolve vendoring, etc
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if !ok {
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return nil, fmt.Errorf("can't resolve import %q", path)
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}
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return compilerImporter.Import(path)
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})
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tc := &types.Config{
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Importer: importer,
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Sizes: types.SizesFor("gc", build.Default.GOARCH), // assume gccgo ≡ gc?
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}
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info := &types.Info{
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Types: make(map[ast.Expr]types.TypeAndValue),
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Defs: make(map[*ast.Ident]types.Object),
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Uses: make(map[*ast.Ident]types.Object),
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Implicits: make(map[ast.Node]types.Object),
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Scopes: make(map[ast.Node]*types.Scope),
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Selections: make(map[*ast.SelectorExpr]*types.Selection),
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}
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pkg, err := tc.Check(cfg.ImportPath, fset, files, info)
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if err != nil {
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if cfg.SucceedOnTypecheckFailure {
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// Silently succeed; let the compiler
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// report type errors.
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err = nil
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}
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return nil, err
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}
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// Register fact types with gob.
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// In VetxOnly mode, analyzers are only for their facts,
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// so we can skip any analysis that neither produces facts
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// nor depends on any analysis that produces facts.
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// Also build a map to hold working state and result.
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type action struct {
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once sync.Once
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result interface{}
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err error
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usesFacts bool // (transitively uses)
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diagnostics []analysis.Diagnostic
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}
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actions := make(map[*analysis.Analyzer]*action)
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var registerFacts func(a *analysis.Analyzer) bool
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registerFacts = func(a *analysis.Analyzer) bool {
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act, ok := actions[a]
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if !ok {
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act = new(action)
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var usesFacts bool
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for _, f := range a.FactTypes {
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usesFacts = true
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gob.Register(f)
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}
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for _, req := range a.Requires {
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if registerFacts(req) {
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usesFacts = true
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}
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}
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act.usesFacts = usesFacts
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actions[a] = act
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}
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return act.usesFacts
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}
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var filtered []*analysis.Analyzer
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for _, a := range analyzers {
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if registerFacts(a) || !cfg.VetxOnly {
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filtered = append(filtered, a)
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}
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}
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analyzers = filtered
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// Read facts from imported packages.
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read := func(path string) ([]byte, error) {
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if vetx, ok := cfg.PackageVetx[path]; ok {
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return ioutil.ReadFile(vetx)
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}
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return nil, nil // no .vetx file, no facts
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}
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facts, err := facts.Decode(pkg, read)
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if err != nil {
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return nil, err
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}
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// In parallel, execute the DAG of analyzers.
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var exec func(a *analysis.Analyzer) *action
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var execAll func(analyzers []*analysis.Analyzer)
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exec = func(a *analysis.Analyzer) *action {
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act := actions[a]
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act.once.Do(func() {
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execAll(a.Requires) // prefetch dependencies in parallel
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// The inputs to this analysis are the
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// results of its prerequisites.
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inputs := make(map[*analysis.Analyzer]interface{})
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var failed []string
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for _, req := range a.Requires {
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reqact := exec(req)
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if reqact.err != nil {
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failed = append(failed, req.String())
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continue
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}
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inputs[req] = reqact.result
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}
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// Report an error if any dependency failed.
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if failed != nil {
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sort.Strings(failed)
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act.err = fmt.Errorf("failed prerequisites: %s", strings.Join(failed, ", "))
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return
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}
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factFilter := make(map[reflect.Type]bool)
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for _, f := range a.FactTypes {
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factFilter[reflect.TypeOf(f)] = true
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}
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pass := &analysis.Pass{
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Analyzer: a,
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Fset: fset,
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Files: files,
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OtherFiles: cfg.NonGoFiles,
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Pkg: pkg,
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TypesInfo: info,
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TypesSizes: tc.Sizes,
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ResultOf: inputs,
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Report: func(d analysis.Diagnostic) { act.diagnostics = append(act.diagnostics, d) },
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ImportObjectFact: facts.ImportObjectFact,
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ExportObjectFact: facts.ExportObjectFact,
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AllObjectFacts: func() []analysis.ObjectFact { return facts.AllObjectFacts(factFilter) },
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ImportPackageFact: facts.ImportPackageFact,
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ExportPackageFact: facts.ExportPackageFact,
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AllPackageFacts: func() []analysis.PackageFact { return facts.AllPackageFacts(factFilter) },
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}
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t0 := time.Now()
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act.result, act.err = a.Run(pass)
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if false {
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log.Printf("analysis %s = %s", pass, time.Since(t0))
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}
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})
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return act
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}
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execAll = func(analyzers []*analysis.Analyzer) {
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var wg sync.WaitGroup
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for _, a := range analyzers {
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wg.Add(1)
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go func(a *analysis.Analyzer) {
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_ = exec(a)
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wg.Done()
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}(a)
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}
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wg.Wait()
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}
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execAll(analyzers)
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// Return diagnostics and errors from root analyzers.
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results := make([]result, len(analyzers))
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for i, a := range analyzers {
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act := actions[a]
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results[i].a = a
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results[i].err = act.err
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results[i].diagnostics = act.diagnostics
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}
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data := facts.Encode()
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if err := ioutil.WriteFile(cfg.VetxOutput, data, 0666); err != nil {
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return nil, fmt.Errorf("failed to write analysis facts: %v", err)
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}
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return results, nil
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}
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type result struct {
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a *analysis.Analyzer
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diagnostics []analysis.Diagnostic
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err error
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}
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type importerFunc func(path string) (*types.Package, error)
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func (f importerFunc) Import(path string) (*types.Package, error) { return f(path) }
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9
vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker112.go
generated
vendored
Normal file
9
vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker112.go
generated
vendored
Normal file
@@ -0,0 +1,9 @@
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// +build go1.12
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package unitchecker
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import "go/importer"
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func init() {
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importerForCompiler = importer.ForCompiler
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}
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Block a user