-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![cfg(not(test))]
-
-extern crate env_logger;
-extern crate failure;
-extern crate getopts;
-extern crate rustfmt_nightly as rustfmt;
+use env_logger;
+use failure::{err_msg, format_err, Error as FailureError, Fail};
+use io::Error as IoError;
+
+use rustfmt_nightly as rustfmt;
use std::env;
use std::fs::File;
use std::io::{self, stdout, Read, Write};
use std::path::{Path, PathBuf};
-
-use failure::err_msg;
+use std::str::FromStr;
use getopts::{Matches, Options};
-use rustfmt::{
- emit_post_matter, emit_pre_matter, format_and_emit_report, load_config, CliOptions, Config,
- FileName, FmtResult, Input, Summary, Verbosity, WriteMode, WRITE_MODE_LIST,
+use crate::rustfmt::{
+ load_config, CliOptions, Color, Config, Edition, EmitMode, FileLines, FileName,
+ FormatReportFormatterBuilder, Input, Session, Verbosity,
};
fn main() {
let opts = make_opts();
let exit_code = match execute(&opts) {
- Ok((write_mode, summary)) => {
- if summary.has_operational_errors()
- || summary.has_parsing_errors()
- || (summary.has_diff && write_mode == WriteMode::Check)
- {
- 1
- } else {
- 0
- }
- }
+ Ok(code) => code,
Err(e) => {
eprintln!("{}", e.to_string());
1
// Exit with given exit code.
//
- // NOTE: This immediately terminates the process without doing any cleanup,
+ // NOTE: this immediately terminates the process without doing any cleanup,
// so make sure to finish all necessary cleanup before this is called.
std::process::exit(exit_code);
}
minimal_config_path: Option<String>,
},
/// Print the help message.
- Help,
- // Print version information
+ Help(HelpOp),
+ /// Print version information
Version,
- /// Print detailed configuration help.
- ConfigHelp,
/// Output default config to a file, or stdout if None
- ConfigOutputDefault {
- path: Option<String>,
- },
+ ConfigOutputDefault { path: Option<String> },
+ /// Output current config (as if formatting to a file) to stdout
+ ConfigOutputCurrent { path: Option<String> },
/// No file specified, read from stdin
- Stdin {
- input: String,
- },
+ Stdin { input: String },
+}
+
+/// Rustfmt operations errors.
+#[derive(Fail, Debug)]
+pub enum OperationError {
+ /// An unknown help topic was requested.
+ #[fail(display = "Unknown help topic: `{}`.", _0)]
+ UnknownHelpTopic(String),
+ /// An unknown print-config option was requested.
+ #[fail(display = "Unknown print-config option: `{}`.", _0)]
+ UnknownPrintConfigTopic(String),
+ /// Attempt to generate a minimal config from standard input.
+ #[fail(display = "The `--print-config=minimal` option doesn't work with standard input.")]
+ MinimalPathWithStdin,
+ /// An io error during reading or writing.
+ #[fail(display = "io error: {}", _0)]
+ IoError(IoError),
+}
+
+impl From<IoError> for OperationError {
+ fn from(e: IoError) -> OperationError {
+ OperationError::IoError(e)
+ }
+}
+
+/// Arguments to `--help`
+enum HelpOp {
+ None,
+ Config,
+ FileLines,
}
fn make_opts() -> Options {
let mut opts = Options::new();
- // Sorted in alphabetical order.
- opts.optopt(
- "",
- "color",
- "Use colored output (if supported)",
- "[always|never|auto]",
- );
opts.optflag(
"",
- "config-help",
- "Show details of rustfmt configuration options",
+ "check",
+ "Run in 'check' mode. Exits with 0 if input is formatted correctly. Exits \
+ with 1 and prints a diff if formatting is required.",
);
+ let is_nightly = is_nightly();
+ let emit_opts = if is_nightly {
+ "[files|stdout|coverage|checkstyle|json]"
+ } else {
+ "[files|stdout]"
+ };
+ opts.optopt("", "emit", "What data to emit and how", emit_opts);
+ opts.optflag("", "backup", "Backup any modified files.");
opts.optopt(
"",
"config-path",
found reverts to the input file path",
"[Path for the configuration file]",
);
- opts.opt(
- "",
- "dump-default-config",
- "Dumps default configuration to PATH. PATH defaults to stdout, if omitted.",
- "PATH",
- getopts::HasArg::Maybe,
- getopts::Occur::Optional,
- );
+ opts.optopt("", "edition", "Rust edition to use", "[2015|2018]");
opts.optopt(
"",
- "dump-minimal-config",
- "Dumps configuration options that were checked during formatting to a file.",
- "PATH",
- );
- opts.optflag(
- "",
- "error-on-unformatted",
- "Error if unable to get comments or string literals within max_width, \
- or they are left with trailing whitespaces",
+ "color",
+ "Use colored output (if supported)",
+ "[always|never|auto]",
);
opts.optopt(
"",
- "file-lines",
- "Format specified line ranges. See README for more detail on the JSON format.",
- "JSON",
+ "print-config",
+ "Dumps a default or minimal config to PATH. A minimal config is the \
+ subset of the current config file used for formatting the current program. \
+ `current` writes to stdout current config as if formatting the file at PATH.",
+ "[default|minimal|current] PATH",
);
- opts.optflag("h", "help", "Show this message");
- opts.optflag("", "skip-children", "Don't reformat child modules");
opts.optflag(
- "",
- "unstable-features",
- "Enables unstable features. Only available on nightly channel",
+ "l",
+ "files-with-diff",
+ "Prints the names of mismatched files that were formatted. Prints the names of \
+ files that would be formated when used with `--check` mode. ",
);
+
+ if is_nightly {
+ opts.optflag(
+ "",
+ "unstable-features",
+ "Enables unstable features. Only available on nightly channel.",
+ );
+ opts.optopt(
+ "",
+ "file-lines",
+ "Format specified line ranges. Run with `--help=file-lines` for \
+ more detail (unstable).",
+ "JSON",
+ );
+ opts.optflag(
+ "",
+ "error-on-unformatted",
+ "Error if unable to get comments or string literals within max_width, \
+ or they are left with trailing whitespaces (unstable).",
+ );
+ opts.optflag(
+ "",
+ "skip-children",
+ "Don't reformat child modules (unstable).",
+ );
+ }
+
opts.optflag("v", "verbose", "Print verbose output");
opts.optflag("q", "quiet", "Print less output");
opts.optflag("V", "version", "Show version information");
- opts.optopt(
- "",
- "write-mode",
- "How to write output (not usable when piping from stdin)",
- WRITE_MODE_LIST,
+ opts.optflagopt(
+ "h",
+ "help",
+ "Show this message or help about a specific topic: `config` or `file-lines`",
+ "=TOPIC",
);
opts
}
-fn execute(opts: &Options) -> FmtResult<(WriteMode, Summary)> {
+fn is_nightly() -> bool {
+ option_env!("CFG_RELEASE_CHANNEL").map_or(true, |c| c == "nightly" || c == "dev")
+}
+
+// Returned i32 is an exit code
+fn execute(opts: &Options) -> Result<i32, FailureError> {
let matches = opts.parse(env::args().skip(1))?;
+ let options = GetOptsOptions::from_matches(&matches)?;
match determine_operation(&matches)? {
- Operation::Help => {
+ Operation::Help(HelpOp::None) => {
print_usage_to_stdout(opts, "");
- Summary::print_exit_codes();
- Ok((WriteMode::None, Summary::default()))
+ Ok(0)
+ }
+ Operation::Help(HelpOp::Config) => {
+ Config::print_docs(&mut stdout(), options.unstable_features);
+ Ok(0)
+ }
+ Operation::Help(HelpOp::FileLines) => {
+ print_help_file_lines();
+ Ok(0)
}
Operation::Version => {
print_version();
- Ok((WriteMode::None, Summary::default()))
- }
- Operation::ConfigHelp => {
- Config::print_docs(&mut stdout(), matches.opt_present("unstable-features"));
- Ok((WriteMode::None, Summary::default()))
+ Ok(0)
}
Operation::ConfigOutputDefault { path } => {
let toml = Config::default().all_options().to_toml().map_err(err_msg)?;
} else {
io::stdout().write_all(toml.as_bytes())?;
}
- Ok((WriteMode::None, Summary::default()))
+ Ok(0)
}
- Operation::Stdin { input } => {
- // try to read config from local directory
- let options = CliOptions::from_matches(&matches)?;
- let (mut config, _) = load_config(Some(Path::new(".")), Some(&options))?;
-
- // write_mode is always Display for Stdin.
- config.set().write_mode(WriteMode::Display);
- config.set().verbose(Verbosity::Quiet);
+ Operation::ConfigOutputCurrent { path } => {
+ let path = match path {
+ Some(path) => path,
+ None => return Err(format_err!("PATH required for `--print-config current`")),
+ };
- // parse file_lines
- if let Some(ref file_lines) = matches.opt_str("file-lines") {
- config
- .set()
- .file_lines(file_lines.parse().map_err(err_msg)?);
- for f in config.file_lines().files() {
- match *f {
- FileName::Custom(ref f) if f == "stdin" => {}
- _ => eprintln!("Warning: Extra file listed in file_lines option '{}'", f),
- }
- }
- }
+ let file = PathBuf::from(path);
+ let file = file.canonicalize().unwrap_or(file);
- let mut error_summary = Summary::default();
- emit_pre_matter(&config)?;
- match format_and_emit_report(Input::Text(input), &config) {
- Ok(summary) => error_summary.add(summary),
- Err(_) => error_summary.add_operational_error(),
- }
- emit_post_matter(&config)?;
+ let (config, _) = load_config(Some(file.parent().unwrap()), Some(options.clone()))?;
+ let toml = config.all_options().to_toml().map_err(err_msg)?;
+ io::stdout().write_all(toml.as_bytes())?;
- Ok((WriteMode::Display, error_summary))
+ Ok(0)
}
+ Operation::Stdin { input } => format_string(input, options),
Operation::Format {
files,
minimal_config_path,
- } => {
- let options = CliOptions::from_matches(&matches)?;
- format(files, minimal_config_path, options)
+ } => format(files, minimal_config_path, &options),
+ }
+}
+
+fn format_string(input: String, options: GetOptsOptions) -> Result<i32, FailureError> {
+ // try to read config from local directory
+ let (mut config, _) = load_config(Some(Path::new(".")), Some(options.clone()))?;
+
+ // emit mode is always Stdout for Stdin.
+ config.set().emit_mode(EmitMode::Stdout);
+ config.set().verbose(Verbosity::Quiet);
+
+ // parse file_lines
+ config.set().file_lines(options.file_lines);
+ for f in config.file_lines().files() {
+ match *f {
+ FileName::Stdin => {}
+ _ => eprintln!("Warning: Extra file listed in file_lines option '{}'", f),
}
}
+
+ let out = &mut stdout();
+ let mut session = Session::new(config, Some(out));
+ format_and_emit_report(&mut session, Input::Text(input));
+
+ let exit_code = if session.has_operational_errors() || session.has_parsing_errors() {
+ 1
+ } else {
+ 0
+ };
+ Ok(exit_code)
}
fn format(
files: Vec<PathBuf>,
minimal_config_path: Option<String>,
- options: CliOptions,
-) -> FmtResult<(WriteMode, Summary)> {
+ options: &GetOptsOptions,
+) -> Result<i32, FailureError> {
options.verify_file_lines(&files);
- let (config, config_path) = load_config(None, Some(&options))?;
+ let (config, config_path) = load_config(None, Some(options.clone()))?;
if config.verbose() == Verbosity::Verbose {
if let Some(path) = config_path.as_ref() {
}
}
- emit_pre_matter(&config)?;
- let mut error_summary = Summary::default();
+ let out = &mut stdout();
+ let mut session = Session::new(config, Some(out));
for file in files {
if !file.exists() {
eprintln!("Error: file `{}` does not exist", file.to_str().unwrap());
- error_summary.add_operational_error();
+ session.add_operational_error();
} else if file.is_dir() {
eprintln!("Error: `{}` is a directory", file.to_str().unwrap());
- error_summary.add_operational_error();
+ session.add_operational_error();
} else {
// Check the file directory if the config-path could not be read or not provided
- let local_config = if config_path.is_none() {
+ if config_path.is_none() {
let (local_config, config_path) =
- load_config(Some(file.parent().unwrap()), Some(&options))?;
+ load_config(Some(file.parent().unwrap()), Some(options.clone()))?;
if local_config.verbose() == Verbosity::Verbose {
if let Some(path) = config_path {
println!(
);
}
}
- local_config
- } else {
- config.clone()
- };
- match format_and_emit_report(Input::File(file), &local_config) {
- Ok(summary) => error_summary.add(summary),
- Err(_) => {
- error_summary.add_operational_error();
- break;
- }
+ session.override_config(local_config, |sess| {
+ format_and_emit_report(sess, Input::File(file))
+ });
+ } else {
+ format_and_emit_report(&mut session, Input::File(file));
}
}
}
- emit_post_matter(&config)?;
// If we were given a path via dump-minimal-config, output any options
// that were used during formatting as TOML.
if let Some(path) = minimal_config_path {
let mut file = File::create(path)?;
- let toml = config.used_options().to_toml().map_err(err_msg)?;
+ let toml = session.config.used_options().to_toml().map_err(err_msg)?;
file.write_all(toml.as_bytes())?;
}
- Ok((config.write_mode(), error_summary))
+ let exit_code = if session.has_operational_errors()
+ || session.has_parsing_errors()
+ || ((session.has_diff() || session.has_check_errors()) && options.check)
+ {
+ 1
+ } else {
+ 0
+ };
+ Ok(exit_code)
+}
+
+fn format_and_emit_report<T: Write>(session: &mut Session<'_, T>, input: Input) {
+ match session.format(input) {
+ Ok(report) => {
+ if report.has_warnings() {
+ eprintln!(
+ "{}",
+ FormatReportFormatterBuilder::new(&report)
+ .enable_colors(should_print_with_colors(session))
+ .build()
+ );
+ }
+ }
+ Err(msg) => {
+ eprintln!("Error writing files: {}", msg);
+ session.add_operational_error();
+ }
+ }
+}
+
+fn should_print_with_colors<T: Write>(session: &mut Session<'_, T>) -> bool {
+ match term::stderr() {
+ Some(ref t)
+ if session.config.color().use_colored_tty()
+ && t.supports_color()
+ && t.supports_attr(term::Attr::Bold) =>
+ {
+ true
+ }
+ _ => false,
+ }
}
fn print_usage_to_stdout(opts: &Options, reason: &str) {
println!("{}", opts.usage(&msg));
}
+fn print_help_file_lines() {
+ println!(
+ "If you want to restrict reformatting to specific sets of lines, you can
+use the `--file-lines` option. Its argument is a JSON array of objects
+with `file` and `range` properties, where `file` is a file name, and
+`range` is an array representing a range of lines like `[7,13]`. Ranges
+are 1-based and inclusive of both end points. Specifying an empty array
+will result in no files being formatted. For example,
+
+```
+rustfmt --file-lines '[
+ {{\"file\":\"src/lib.rs\",\"range\":[7,13]}},
+ {{\"file\":\"src/lib.rs\",\"range\":[21,29]}},
+ {{\"file\":\"src/foo.rs\",\"range\":[10,11]}},
+ {{\"file\":\"src/foo.rs\",\"range\":[15,15]}}]'
+```
+
+would format lines `7-13` and `21-29` of `src/lib.rs`, and lines `10-11`,
+and `15` of `src/foo.rs`. No other files would be formatted, even if they
+are included as out of line modules from `src/lib.rs`."
+ );
+}
+
fn print_version() {
let version_info = format!(
"{}-{}",
println!("rustfmt {}", version_info);
}
-fn determine_operation(matches: &Matches) -> FmtResult<Operation> {
+fn determine_operation(matches: &Matches) -> Result<Operation, OperationError> {
if matches.opt_present("h") {
- return Ok(Operation::Help);
- }
-
- if matches.opt_present("config-help") {
- return Ok(Operation::ConfigHelp);
- }
-
- if matches.opt_present("dump-default-config") {
- // NOTE for some reason when configured with HasArg::Maybe + Occur::Optional opt_default
- // doesn't recognize `--foo bar` as a long flag with an argument but as a long flag with no
- // argument *plus* a free argument. Thus we check for that case in this branch -- this is
- // required for backward compatibility.
- if let Some(path) = matches.free.get(0) {
- return Ok(Operation::ConfigOutputDefault {
- path: Some(path.clone()),
- });
+ let topic = matches.opt_str("h");
+ if topic == None {
+ return Ok(Operation::Help(HelpOp::None));
+ } else if topic == Some("config".to_owned()) {
+ return Ok(Operation::Help(HelpOp::Config));
+ } else if topic == Some("file-lines".to_owned()) {
+ return Ok(Operation::Help(HelpOp::FileLines));
} else {
- return Ok(Operation::ConfigOutputDefault {
- path: matches.opt_str("dump-default-config"),
- });
+ return Err(OperationError::UnknownHelpTopic(topic.unwrap()));
+ }
+ }
+ let mut free_matches = matches.free.iter();
+
+ let mut minimal_config_path = None;
+ if let Some(kind) = matches.opt_str("print-config") {
+ let path = free_matches.next().cloned();
+ match kind.as_str() {
+ "default" => return Ok(Operation::ConfigOutputDefault { path }),
+ "current" => return Ok(Operation::ConfigOutputCurrent { path }),
+ "minimal" => {
+ minimal_config_path = path;
+ if minimal_config_path.is_none() {
+ eprintln!("WARNING: PATH required for `--print-config minimal`.");
+ }
+ }
+ _ => {
+ return Err(OperationError::UnknownPrintConfigTopic(kind));
+ }
}
}
return Ok(Operation::Version);
}
- // If no path is given, we won't output a minimal config.
- let minimal_config_path = matches.opt_str("dump-minimal-config");
-
- // if no file argument is supplied, read from stdin
- if matches.free.is_empty() {
- let mut buffer = String::new();
- io::stdin().read_to_string(&mut buffer)?;
-
- return Ok(Operation::Stdin { input: buffer });
- }
-
- let files: Vec<_> = matches
- .free
- .iter()
+ let files: Vec<_> = free_matches
.map(|s| {
let p = PathBuf::from(s);
// we will do comparison later, so here tries to canonicalize first
})
.collect();
+ // if no file argument is supplied, read from stdin
+ if files.is_empty() {
+ if minimal_config_path.is_some() {
+ return Err(OperationError::MinimalPathWithStdin);
+ }
+ let mut buffer = String::new();
+ io::stdin().read_to_string(&mut buffer)?;
+
+ return Ok(Operation::Stdin { input: buffer });
+ }
+
Ok(Operation::Format {
files,
minimal_config_path,
})
}
+
+const STABLE_EMIT_MODES: [EmitMode; 3] = [EmitMode::Files, EmitMode::Stdout, EmitMode::Diff];
+
+/// Parsed command line options.
+#[derive(Clone, Debug, Default)]
+struct GetOptsOptions {
+ skip_children: Option<bool>,
+ quiet: bool,
+ verbose: bool,
+ config_path: Option<PathBuf>,
+ emit_mode: EmitMode,
+ backup: bool,
+ check: bool,
+ edition: Option<Edition>,
+ color: Option<Color>,
+ file_lines: FileLines, // Default is all lines in all files.
+ unstable_features: bool,
+ error_on_unformatted: Option<bool>,
+ print_misformatted_file_names: bool,
+}
+
+impl GetOptsOptions {
+ pub fn from_matches(matches: &Matches) -> Result<GetOptsOptions, FailureError> {
+ let mut options = GetOptsOptions::default();
+ options.verbose = matches.opt_present("verbose");
+ options.quiet = matches.opt_present("quiet");
+ if options.verbose && options.quiet {
+ return Err(format_err!("Can't use both `--verbose` and `--quiet`"));
+ }
+
+ let rust_nightly = is_nightly();
+
+ if rust_nightly {
+ options.unstable_features = matches.opt_present("unstable-features");
+
+ if options.unstable_features {
+ if matches.opt_present("skip-children") {
+ options.skip_children = Some(true);
+ }
+ if matches.opt_present("error-on-unformatted") {
+ options.error_on_unformatted = Some(true);
+ }
+ if let Some(ref file_lines) = matches.opt_str("file-lines") {
+ options.file_lines = file_lines.parse().map_err(err_msg)?;
+ }
+ } else {
+ let mut unstable_options = vec![];
+ if matches.opt_present("skip-children") {
+ unstable_options.push("`--skip-children`");
+ }
+ if matches.opt_present("error-on-unformatted") {
+ unstable_options.push("`--error-on-unformatted`");
+ }
+ if matches.opt_present("file-lines") {
+ unstable_options.push("`--file-lines`");
+ }
+ if !unstable_options.is_empty() {
+ let s = if unstable_options.len() == 1 { "" } else { "s" };
+ return Err(format_err!(
+ "Unstable option{} ({}) used without `--unstable-features`",
+ s,
+ unstable_options.join(", "),
+ ));
+ }
+ }
+ }
+
+ options.config_path = matches.opt_str("config-path").map(PathBuf::from);
+
+ options.check = matches.opt_present("check");
+ if let Some(ref emit_str) = matches.opt_str("emit") {
+ if options.check {
+ return Err(format_err!("Invalid to use `--emit` and `--check`"));
+ }
+
+ options.emit_mode = emit_mode_from_emit_str(emit_str)?;
+ }
+
+ if let Some(ref edition_str) = matches.opt_str("edition") {
+ options.edition = Some(edition_from_edition_str(edition_str)?);
+ }
+
+ if matches.opt_present("backup") {
+ options.backup = true;
+ }
+
+ if matches.opt_present("files-with-diff") {
+ options.print_misformatted_file_names = true;
+ }
+
+ if !rust_nightly {
+ if !STABLE_EMIT_MODES.contains(&options.emit_mode) {
+ return Err(format_err!(
+ "Invalid value for `--emit` - using an unstable \
+ value without `--unstable-features`",
+ ));
+ }
+ }
+
+ if let Some(ref color) = matches.opt_str("color") {
+ match Color::from_str(color) {
+ Ok(color) => options.color = Some(color),
+ _ => return Err(format_err!("Invalid color: {}", color)),
+ }
+ }
+
+ Ok(options)
+ }
+
+ fn verify_file_lines(&self, files: &[PathBuf]) {
+ for f in self.file_lines.files() {
+ match *f {
+ FileName::Real(ref f) if files.contains(f) => {}
+ FileName::Real(_) => {
+ eprintln!("Warning: Extra file listed in file_lines option '{}'", f)
+ }
+ FileName::Stdin => eprintln!("Warning: Not a file '{}'", f),
+ }
+ }
+ }
+}
+
+impl CliOptions for GetOptsOptions {
+ fn apply_to(self, config: &mut Config) {
+ if self.verbose {
+ config.set().verbose(Verbosity::Verbose);
+ } else if self.quiet {
+ config.set().verbose(Verbosity::Quiet);
+ } else {
+ config.set().verbose(Verbosity::Normal);
+ }
+ config.set().file_lines(self.file_lines);
+ config.set().unstable_features(self.unstable_features);
+ if let Some(skip_children) = self.skip_children {
+ config.set().skip_children(skip_children);
+ }
+ if let Some(error_on_unformatted) = self.error_on_unformatted {
+ config.set().error_on_unformatted(error_on_unformatted);
+ }
+ if let Some(edition) = self.edition {
+ config.set().edition(edition);
+ }
+ if self.check {
+ config.set().emit_mode(EmitMode::Diff);
+ } else {
+ config.set().emit_mode(self.emit_mode);
+ }
+ if self.backup {
+ config.set().make_backup(true);
+ }
+ if let Some(color) = self.color {
+ config.set().color(color);
+ }
+ if self.print_misformatted_file_names {
+ config.set().print_misformatted_file_names(true);
+ }
+ }
+
+ fn config_path(&self) -> Option<&Path> {
+ self.config_path.as_ref().map(|p| &**p)
+ }
+}
+
+fn edition_from_edition_str(edition_str: &str) -> Result<Edition, FailureError> {
+ match edition_str {
+ "2015" => Ok(Edition::Edition2015),
+ "2018" => Ok(Edition::Edition2018),
+ _ => Err(format_err!("Invalid value for `--edition`")),
+ }
+}
+
+fn emit_mode_from_emit_str(emit_str: &str) -> Result<EmitMode, FailureError> {
+ match emit_str {
+ "files" => Ok(EmitMode::Files),
+ "stdout" => Ok(EmitMode::Stdout),
+ "coverage" => Ok(EmitMode::Coverage),
+ "checkstyle" => Ok(EmitMode::Checkstyle),
+ "json" => Ok(EmitMode::Json),
+ _ => Err(format_err!("Invalid value for `--emit`")),
+ }
+}
projects / rust.git / blobdiff