| // Copyright 2018 The Fuchsia 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 codegen |
| |
| import ( |
| "io" |
| "os" |
| "path/filepath" |
| "text/template" |
| |
| "fidl/compiler/backend/common" |
| "fidl/compiler/backend/types" |
| |
| "fidlgen_rust/ir" |
| "fidlgen_rust/templates" |
| ) |
| |
| type Generator struct { |
| tmpls *template.Template |
| } |
| |
| func NewGenerator() *Generator { |
| tmpls := template.New("RustTemplates") |
| template.Must(tmpls.Parse(templates.SourceFile)) |
| template.Must(tmpls.Parse(templates.Bits)) |
| template.Must(tmpls.Parse(templates.Const)) |
| template.Must(tmpls.Parse(templates.Enum)) |
| template.Must(tmpls.Parse(templates.Interface)) |
| template.Must(tmpls.Parse(templates.Service)) |
| template.Must(tmpls.Parse(templates.Struct)) |
| template.Must(tmpls.Parse(templates.Union)) |
| template.Must(tmpls.Parse(templates.Table)) |
| template.Must(tmpls.Parse(templates.Result)) |
| template.Must(tmpls.Parse(templates.Bits)) |
| return &Generator{ |
| tmpls: tmpls, |
| } |
| } |
| |
| func (gen *Generator) GenerateImpl(wr io.Writer, tree ir.Root) error { |
| return gen.tmpls.ExecuteTemplate(wr, "GenerateSourceFile", tree) |
| } |
| |
| func (gen *Generator) GenerateFidl(fidl types.Root, outputFilename, rustfmtPath, rustfmtConfigPath string) error { |
| tree := ir.Compile(fidl) |
| if err := os.MkdirAll(filepath.Dir(outputFilename), os.ModePerm); err != nil { |
| return err |
| } |
| |
| generated, err := os.Create(outputFilename) |
| if err != nil { |
| return err |
| } |
| |
| var args []string |
| if rustfmtConfigPath != "" { |
| args = append(args, "--config-path", rustfmtConfigPath) |
| } |
| generatedPipe, err := common.NewFormatter(rustfmtPath, args...).FormatPipe(generated) |
| if err != nil { |
| return err |
| } |
| |
| if err := gen.GenerateImpl(generatedPipe, tree); err != nil { |
| return err |
| } |
| |
| return generatedPipe.Close() |
| } |