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perf: Extract non-generic part of App::new()

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This commit is contained in:
Jan Verbeek 2022-01-31 00:18:55 +01:00
parent 7774a8ee8a
commit 778bcf2ecc
1 changed files with 26 additions and 20 deletions
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46
src/build/app/mod.rs
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@ -116,27 +116,33 @@ impl<'help> App<'help> {
/// # ;
/// ```
pub fn new<S: Into<String>>(name: S) -> Self {
let name = name.into();
App {
id: Id::from(&*name),
name,
..Default::default()
/// The actual implementation of `new`, non-generic to save code size.
///
/// If we don't do this rustc will unnecessarily generate multiple versions
/// of this code.
fn new_inner<'help>(name: String) -> App<'help> {
App {
id: Id::from(&*name),
name,
..Default::default()
}
.arg(
Arg::new("help")
.long("help")
.help("Print help information")
.global(true)
.generated(),
)
.arg(
Arg::new("version")
.long("version")
.help("Print version information")
.global(true)
.generated(),
)
}
.arg(
Arg::new("help")
.long("help")
.help("Print help information")
.global(true)
.generated(),
)
.arg(
Arg::new("version")
.long("version")
.help("Print version information")
.global(true)
.generated(),
)
new_inner(name.into())
}
/// Adds an [argument] to the list of valid possibilities.