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Implement varargs

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Aram 🍐 2021-08-04 02:05:57 -04:00
parent 95cf9aeccf
commit a7f730c04a
2 changed files with 50 additions and 11 deletions
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34
rups/src/proto/mod.rs
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@ -82,6 +82,16 @@ macro_rules! impl_words {
false
}
}
/// Whether the `Word` matches all words in the vec, starting at the given index.
pub(crate) fn matches_until_end(&self, start: usize, others: &[Option<Self>]) -> bool {
for i in start..others.len() {
if !self.matches(others.get(i)) {
return false;
}
}
true
}
}
};
}
@ -102,6 +112,12 @@ macro_rules! impl_sentences {
$argidx:tt: $arg:ident,
)*
}
$(
,{
$(#[$varargattr:meta])+
$varargidx:tt...: $vararg:ident
}
)?
),
)*
) => {
@ -115,6 +131,10 @@ macro_rules! impl_sentences {
$(#[$argattr])*
$arg: String,
)*
$(
$(#[$varargattr])*
$vararg: Vec<String>,
)*
},
)*
}
@ -127,13 +147,16 @@ macro_rules! impl_sentences {
let words = Word::decode_words(raw.as_slice());
$(
if true $(&& $word.matches(words.get($wordidx)))* {
if true
$(&& $word.matches(words.get($wordidx)))*
$(&& Arg.matches_until_end($varargidx, &words))*
{
return Some($name {
$($arg: raw[$argidx].to_owned(),)*
$($vararg: raw[$varargidx..].to_owned(),)*
})
}
)*
None
}
@ -144,6 +167,7 @@ macro_rules! impl_sentences {
$(
Self::$name {
$($arg,)*
$($vararg,)*
} => {
#[allow(unused_mut)]
let mut words = vec![
@ -156,6 +180,12 @@ macro_rules! impl_sentences {
words[$argidx] = Some($arg);
)*
$(
for vararg in $vararg {
words.push(Some(vararg));
}
)*
words
.into_iter()
.flatten()