Want to know which part of the rust repo handle command line arguments

kolokd · April 17, 2020, 6:56pm

i like know about the rust repo, how it is organized especially the cli interface

cuviper · April 17, 2020, 6:58pm

Start here:

rust-lang/rust/blob/8d67f576b56e8fc98a31123e5963f8d00e40611c/src/librustc_driver/lib.rs#L138


      
                      && (config.opts.debugging_opts.time_passes || config.opts.debugging_opts.time);
              }
          }
          
          
pub fn diagnostics_registry() -> Registry {
              Registry::new(&rustc_error_codes::DIAGNOSTICS)
          }
          
          
// Parse args and run the compiler. This is the primary entry point for rustc.
          // The FileLoader provides a way to load files from sources other than the file system.
          pub fn run_compiler(
              at_args: &[String],
              callbacks: &mut (dyn Callbacks + Send),
              file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
              emitter: Option<Box<dyn Write + Send>>,
          ) -> interface::Result<()> {
              let mut args = Vec::new();
              for arg in at_args {
                  match args::arg_expand(arg.clone()) {
                      Ok(arg) => args.extend(arg),
                      Err(err) => early_error(

flajann2 · April 17, 2020, 8:18pm

Clap is particularly powerful, and also has a macro option. You can define subcommands with it like a true champ.

https://crates.io/crates/clap

Cerber-Ursi · April 18, 2020, 3:02am

This, however, doesn't answer the OP, since rustc itself uses not clap, but getopts.

flajann2 · April 18, 2020, 9:17am

Getops is not as pretty as clap, but perhaps I misunderstood the question. I assumed the question was about what crate can handle command line arguments.

system · July 17, 2020, 9:17am

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Want to know which part of the rust repo handle command line arguments

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