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Unquote strings and handle boolean literals in concat!

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Laurențiu Nicola 2021-01-25 12:53:44 +02:00
parent 1cd5a6cd41
commit ee8c678870
1 changed files with 8 additions and 16 deletions
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24
crates/hir_expand/src/builtin_macro.rs
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@ -327,17 +327,12 @@ fn concat_expand(
// concat works with string and char literals, so remove any quotes. // concat works with string and char literals, so remove any quotes.
// It also works with integer, float and boolean literals, so just use the rest // It also works with integer, float and boolean literals, so just use the rest
// as-is. // as-is.
let component = unquote_str(&it).unwrap_or_else(|| it.text.to_string());
text += it text.push_str(&component);
.text }
.trim_start_matches(|c| match c { // handle boolean literals
'r' | '#' | '\'' | '"' => true, tt::TokenTree::Leaf(tt::Leaf::Ident(id)) if i % 2 == 0 => {
_ => false, text.push_str(id.text.as_str());
})
.trim_end_matches(|c| match c {
'#' | '\'' | '"' => true,
_ => false,
});
} }
tt::TokenTree::Leaf(tt::Leaf::Punct(punct)) if i % 2 == 1 && punct.char == ',' => (), tt::TokenTree::Leaf(tt::Leaf::Punct(punct)) if i % 2 == 1 && punct.char == ',' => (),
_ => { _ => {
@ -345,7 +340,6 @@ fn concat_expand(
} }
} }
} }
ExpandResult { value: Some((quote!(#text), FragmentKind::Expr)), err } ExpandResult { value: Some((quote!(#text), FragmentKind::Expr)), err }
} }
@ -745,12 +739,10 @@ mod tests {
r##" r##"
#[rustc_builtin_macro] #[rustc_builtin_macro]
macro_rules! concat {} macro_rules! concat {}
concat!("foo", 0, r#"bar"#); concat!("foo", r, 0, r#"bar"#, false);
"##, "##,
); );
assert_eq!(expanded, r#""foo0bar""#); assert_eq!(expanded, r#""foor0barfalse""#);
// FIXME: `true`/`false` literals don't work.
} }
} }