| // Copyright 2020 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 main |
| |
| import ( |
| "flag" |
| "fmt" |
| "log" |
| "os" |
| "path" |
| |
| "go.fuchsia.dev/fuchsia/tools/fidl/fidlgen_rust/codegen" |
| "go.fuchsia.dev/fuchsia/tools/fidl/lib/fidlgen" |
| ) |
| |
| type flagsDef struct { |
| jsonPath *string |
| outputFilenamePath *string |
| rustfmtPath *string |
| rustfmtConfigPath *string |
| } |
| |
| var flags = flagsDef{ |
| jsonPath: flag.String("json", "", |
| "relative path to the FIDL intermediate representation."), |
| outputFilenamePath: flag.String("output-filename", "", |
| "the output path for the generated Rust implementation."), |
| rustfmtPath: flag.String("rustfmt", "", |
| "path to the rustfmt tool."), |
| rustfmtConfigPath: flag.String("rustfmt-config", "", |
| "path to rustfmt.toml."), |
| } |
| |
| // valid returns true if the parsed flags are valid. |
| func (f flagsDef) valid() bool { |
| return *f.jsonPath != "" && *f.outputFilenamePath != "" |
| } |
| |
| func printUsage() { |
| program := path.Base(os.Args[0]) |
| message := `Usage: ` + program + ` [flags] |
| |
| Rust FIDL backend, used to generate Rust bindings from JSON IR input (the |
| intermediate representation of a FIDL library). |
| |
| Flags: |
| ` |
| fmt.Fprint(flag.CommandLine.Output(), message) |
| flag.PrintDefaults() |
| } |
| |
| func main() { |
| flag.Usage = printUsage |
| flag.Parse() |
| if !flags.valid() { |
| printUsage() |
| os.Exit(1) |
| } |
| |
| root, err := fidlgen.ReadJSONIr(*flags.jsonPath) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| generator := codegen.NewGenerator(*flags.rustfmtPath, *flags.rustfmtConfigPath) |
| err = generator.GenerateFidl( |
| root, *flags.outputFilenamePath) |
| if err != nil { |
| log.Fatalf("Error running generator: %v", err) |
| } |
| } |