Golang generator.NewContext函数代码示例

func construct(t *testing.T, files map[string]string) *generator.Context {
	b := parser.New()
	for name, src := range files {
		if err := b.AddFile(name, []byte(src)); err != nil {
			t.Fatal(err)
		}
	}
	c, err := generator.NewContext(b, namer.NameSystems{
		"public":  namer.NewPublicNamer(0),
		"private": namer.NewPrivateNamer(0),
	}, "public")
	if err != nil {
		t.Fatal(err)
	}
	return c
}

func testOpenAPITypeWritter(t *testing.T, code string) (error, *assert.Assertions, *bytes.Buffer) {
	assert := assert.New(t)
	var testFiles = map[string]string{
		"base/foo/bar.go": code,
	}
	rawNamer := namer.NewRawNamer("o", nil)
	namers := namer.NameSystems{
		"raw": namer.NewRawNamer("", nil),
	}
	builder, universe, _ := construct(t, testFiles, rawNamer)
	context, err := generator.NewContext(builder, namers, "raw")
	if err != nil {
		t.Fatal(err)
	}
	buffer := &bytes.Buffer{}
	sw := generator.NewSnippetWriter(buffer, context, "$", "$")
	blahT := universe.Type(types.Name{Package: "base/foo", Name: "Blah"})
	return newOpenAPITypeWriter(sw).generate(blahT), assert, buffer
}

func construct(t *testing.T, files map[string]string) *generator.Context {
	b := parser.New()
	dir, err := ioutil.TempDir("", "snippet_writer_test")
	if err != nil {
		t.Fatal(err)
	}
	for name, src := range files {
		if err := b.AddFile(filepath.Join(dir, name), name, []byte(src)); err != nil {
			t.Fatal(err)
		}
	}
	c, err := generator.NewContext(b, namer.NameSystems{
		"public":  namer.NewPublicNamer(0),
		"private": namer.NewPrivateNamer(0),
	}, "public")
	if err != nil {
		t.Fatal(err)
	}
	return c
}

// Execute implements main().
// If you don't need any non-default behavior, use as:
// args.Default().Execute(...)
func (g *GeneratorArgs) Execute(nameSystems namer.NameSystems, defaultSystem string, pkgs func(*generator.Context, *GeneratorArgs) generator.Packages) error {
	pflag.Parse()

	b, err := g.NewBuilder()
	if err != nil {
		return fmt.Errorf("Failed making a parser: %v", err)
	}

	c, err := generator.NewContext(b, nameSystems, defaultSystem)
	if err != nil {
		return fmt.Errorf("Failed making a context: %v", err)
	}

	c.Verify = g.VerifyOnly
	packages := pkgs(c, g)
	if err := c.ExecutePackages(g.OutputBase, packages); err != nil {
		return fmt.Errorf("Failed executing generator: %v", err)
	}

	return nil
}

func Run(g *Generator) {
	if g.Common.VerifyOnly {
		g.OnlyIDL = true
		g.Clean = false
	}

	b := parser.New()
	b.AddBuildTags("proto")

	omitTypes := map[types.Name]struct{}{}
	for _, t := range strings.Split(g.DropEmbeddedFields, ",") {
		name := types.Name{}
		if i := strings.LastIndex(t, "."); i != -1 {
			name.Package, name.Name = t[:i], t[i+1:]
		} else {
			name.Name = t
		}
		if len(name.Name) == 0 {
			log.Fatalf("--drop-embedded-types requires names in the form of [GOPACKAGE.]TYPENAME: %v", t)
		}
		omitTypes[name] = struct{}{}
	}

	boilerplate, err := g.Common.LoadGoBoilerplate()
	if err != nil {
		log.Fatalf("Failed loading boilerplate: %v", err)
	}

	protobufNames := NewProtobufNamer()
	outputPackages := generator.Packages{}
	for _, d := range strings.Split(g.Packages, ",") {
		generateAllTypes, outputPackage := true, true
		switch {
		case strings.HasPrefix(d, "+"):
			d = d[1:]
			generateAllTypes = false
		case strings.HasPrefix(d, "-"):
			d = d[1:]
			outputPackage = false
		}
		name := protoSafePackage(d)
		parts := strings.SplitN(d, "=", 2)
		if len(parts) > 1 {
			d = parts[0]
			name = parts[1]
		}
		p := newProtobufPackage(d, name, generateAllTypes, omitTypes)
		header := append([]byte{}, boilerplate...)
		header = append(header, p.HeaderText...)
		p.HeaderText = header
		protobufNames.Add(p)
		if outputPackage {
			outputPackages = append(outputPackages, p)
		}
	}

	if !g.Common.VerifyOnly {
		for _, p := range outputPackages {
			if err := p.(*protobufPackage).Clean(g.OutputBase); err != nil {
				log.Fatalf("Unable to clean package %s: %v", p.Name(), err)
			}
		}
	}

	if g.Clean {
		return
	}

	for _, p := range protobufNames.List() {
		if err := b.AddDir(p.Path()); err != nil {
			log.Fatalf("Unable to add directory %q: %v", p.Path(), err)
		}
	}

	c, err := generator.NewContext(
		b,
		namer.NameSystems{
			"public": namer.NewPublicNamer(3),
			"proto":  protobufNames,
		},
		"public",
	)
	c.Verify = g.Common.VerifyOnly
	c.FileTypes["protoidl"] = NewProtoFile()

	if err != nil {
		log.Fatalf("Failed making a context: %v", err)
	}

	if err := protobufNames.AssignTypesToPackages(c); err != nil {
		log.Fatalf("Failed to identify Common types: %v", err)
	}

	if err := c.ExecutePackages(g.OutputBase, outputPackages); err != nil {
		log.Fatalf("Failed executing generator: %v", err)
	}

	if g.OnlyIDL {
		return
	}
//.........这里部分代码省略.........