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Use boxed slices instead ovecs in decl macros

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This commit is contained in:
Lukas Wirth 2023-05-02 17:04:53 +02:00
parent 3fdff0ae4b
commit 90499d4390
3 changed files with 6 additions and 6 deletions
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6
crates/mbe/src/lib.rs
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@ -104,7 +104,7 @@ impl fmt::Display for ExpandError {
/// and `$()*` have special meaning (see `Var` and `Repeat` data structures)
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct DeclarativeMacro {
rules: Vec<Rule>,
rules: Box<[Rule]>,
/// Highest id of the token we have in TokenMap
shift: Shift,
// This is used for correctly determining the behavior of the pat fragment
@ -217,7 +217,7 @@ impl DeclarativeMacro {
validate(lhs)?;
}
Ok(DeclarativeMacro { rules, shift: Shift::new(tt), is_2021 })
Ok(DeclarativeMacro { rules: rules.into_boxed_slice(), shift: Shift::new(tt), is_2021 })
}
/// The new, unstable `macro m {}` flavor.
@ -250,7 +250,7 @@ impl DeclarativeMacro {
validate(lhs)?;
}
Ok(DeclarativeMacro { rules, shift: Shift::new(tt), is_2021 })
Ok(DeclarativeMacro { rules: rules.into_boxed_slice(), shift: Shift::new(tt), is_2021 })
}
pub fn expand(&self, tt: &tt::Subtree) -> ExpandResult<tt::Subtree> {