1ff619295c
Add "star" variadic parameters that accept zero or more arguments, distinguished with a `*` in front of the parameter name.
27 lines
782 B
Rust
27 lines
782 B
Rust
use crate::common::*;
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/// A single function parameter
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#[derive(PartialEq, Debug)]
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pub(crate) struct Parameter<'src> {
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/// The parameter name
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pub(crate) name: Name<'src>,
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/// The kind of parameter
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pub(crate) kind: ParameterKind,
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/// An optional default expression
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pub(crate) default: Option<Expression<'src>>,
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}
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impl<'src> Display for Parameter<'src> {
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fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
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let color = Color::fmt(f);
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if let Some(prefix) = self.kind.prefix() {
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write!(f, "{}", color.annotation().paint(prefix))?;
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}
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write!(f, "{}", color.parameter().paint(self.name.lexeme()))?;
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if let Some(ref default) = self.default {
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write!(f, "={}", color.string().paint(&default.to_string()))?;
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}
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Ok(())
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}
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}
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