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Simplify

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This commit is contained in:
Aleksey Kladov
2020-08-26 13:40:45 +02:00
parent 868aaf2bc6
commit 7431ec82c9
1 changed files with 4 additions and 17 deletions
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21
crates/rust-analyzer/src/bin/args.rs
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@@ -3,7 +3,7 @@
//! If run started args, we run the LSP server loop. With a subcommand, we do a //! If run started args, we run the LSP server loop. With a subcommand, we do a
//! one-time batch processing. //! one-time batch processing.
use std::{env, fmt::Write, path::PathBuf}; use std::{env, path::PathBuf};
use anyhow::{bail, format_err, Result}; use anyhow::{bail, format_err, Result};
use pico_args::Arguments; use pico_args::Arguments;
@@ -108,7 +108,7 @@ impl Args {
let mut matches = Arguments::from_env(); let mut matches = Arguments::from_env();
if matches.contains("--version") { if matches.contains("--version") {
matches.finish().or_else(handle_extra_flags)?; matches.finish()?;
return Ok(Args { return Ok(Args {
verbosity: Verbosity::Normal, verbosity: Verbosity::Normal,
log_file: None, log_file: None,
@@ -138,7 +138,7 @@ impl Args {
let subcommand = match matches.subcommand()? { let subcommand = match matches.subcommand()? {
Some(it) => it, Some(it) => it,
None => { None => {
matches.finish().or_else(handle_extra_flags)?; matches.finish()?;
return Ok(Args { verbosity, log_file, command: Command::RunServer }); return Ok(Args { verbosity, log_file, command: Command::RunServer });
} }
}; };
@@ -217,20 +217,7 @@ impl Args {
return Ok(Args { verbosity, log_file: None, command: Command::Help }); return Ok(Args { verbosity, log_file: None, command: Command::Help });
} }
}; };
matches.finish().or_else(handle_extra_flags)?; matches.finish()?;
Ok(Args { verbosity, log_file, command }) Ok(Args { verbosity, log_file, command })
} }
} }
fn handle_extra_flags(e: pico_args::Error) -> Result<()> {
if let pico_args::Error::UnusedArgsLeft(flags) = e {
let mut invalid_flags = String::new();
for flag in flags {
write!(&mut invalid_flags, "{}, ", flag)?;
}
let (invalid_flags, _) = invalid_flags.split_at(invalid_flags.len() - 2);
bail!("Invalid flags: {}", invalid_flags);
} else {
bail!(e);
}
}