2019-04-11 15:23:14 -07:00
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use crate::common::*;
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2017-11-16 23:30:08 -08:00
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2019-11-07 10:55:15 -08:00
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/// A single function parameter
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2017-11-16 23:30:08 -08:00
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#[derive(PartialEq, Debug)]
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2019-11-07 10:55:15 -08:00
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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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/// Parameter is variadic
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2019-09-21 15:35:03 -07:00
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pub(crate) variadic: bool,
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2019-11-07 10:55:15 -08:00
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/// An optional default expression
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pub(crate) default: Option<Expression<'src>>,
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2017-11-16 23:30:08 -08:00
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}
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2019-11-07 10:55:15 -08:00
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impl<'src> Display for Parameter<'src> {
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2019-04-11 15:23:14 -07:00
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fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
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2017-11-16 23:30:08 -08:00
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let color = Color::fmt(f);
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if self.variadic {
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write!(f, "{}", color.annotation().paint("+"))?;
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}
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2019-11-07 10:55:15 -08:00
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write!(f, "{}", color.parameter().paint(self.name.lexeme()))?;
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2017-11-16 23:30:08 -08:00
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if let Some(ref default) = self.default {
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2019-04-11 23:58:08 -07:00
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write!(f, "={}", color.string().paint(&default.to_string()))?;
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2017-11-16 23:30:08 -08:00
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}
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Ok(())
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}
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}
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