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Auto merge of #18092 - ChayimFriedman2:fix-stringify, r=lnicola

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fix: Correctly escape strings in our quote macro

This is a small change, but it was the cause of 90% of the errors in `rust-analyzer diagnostics .` 🫢 (because this worked incorrectly with `stringify!()`, which means every `quote!()` (the original one) quoting a string also didn't work).

With this change and #18085 together, all remaining errors are type errors.

This may mean we can enable more errors, but this is out of scope for this PR.
This commit is contained in:
bors 2024-09-10 16:18:30 +00:00
commit bcc7089921
3 changed files with 25 additions and 6 deletions
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18
crates/hir-def/src/macro_expansion_tests/builtin_fn_macro.rs
View file

@ -528,3 +528,21 @@ fn main() { foobar; }
"##]],
);
}
#[test]
fn test_quote_string() {
check(
r##"
#[rustc_builtin_macro]
macro_rules! stringify {}
fn main() { stringify!("hello"); }
"##,
expect![[r##"
#[rustc_builtin_macro]
macro_rules! stringify {}
fn main() { "\"hello\""; }
"##]],
);
}

8
crates/hir-expand/src/builtin/fn_macro.rs
View file

@ -483,7 +483,7 @@ fn concat_expand(
match it.kind {
tt::LitKind::Char => {
if let Ok(c) = unescape_char(it.symbol.as_str()) {
text.extend(c.escape_default());
text.push(c);
}
record_span(it.span);
}
@ -491,11 +491,11 @@ fn concat_expand(
format_to!(text, "{}", it.symbol.as_str())
}
tt::LitKind::Str => {
text.push_str(it.symbol.as_str());
text.push_str(unescape_str(&it.symbol).as_str());
record_span(it.span);
}
tt::LitKind::StrRaw(_) => {
format_to!(text, "{}", it.symbol.as_str().escape_debug());
format_to!(text, "{}", it.symbol.as_str());
record_span(it.span);
}
tt::LitKind::Byte
@ -813,7 +813,7 @@ fn include_str_expand(
fn get_env_inner(db: &dyn ExpandDatabase, arg_id: MacroCallId, key: &Symbol) -> Option<String> {
let krate = db.lookup_intern_macro_call(arg_id).krate;
db.crate_graph()[krate].env.get(key.as_str()).map(|it| it.escape_debug().to_string())
db.crate_graph()[krate].env.get(key.as_str())
}
fn env_expand(

5
crates/hir-expand/src/builtin/quote.rs
View file

@ -3,6 +3,7 @@
use intern::{sym, Symbol};
use span::Span;
use syntax::ToSmolStr;
use tt::IdentIsRaw;
use crate::name::Name;
@ -211,8 +212,8 @@ impl_to_to_tokentrees! {
_span: crate::tt::Literal => self { self };
_span: crate::tt::Ident => self { self };
_span: crate::tt::Punct => self { self };
span: &str => self { crate::tt::Literal{symbol: Symbol::intern(self), span, kind: tt::LitKind::Str, suffix: None }};
span: String => self { crate::tt::Literal{symbol: Symbol::intern(&self), span, kind: tt::LitKind::Str, suffix: None }};
span: &str => self { crate::tt::Literal{symbol: Symbol::intern(&self.escape_default().to_smolstr()), span, kind: tt::LitKind::Str, suffix: None }};
span: String => self { crate::tt::Literal{symbol: Symbol::intern(&self.escape_default().to_smolstr()), span, kind: tt::LitKind::Str, suffix: None }};
span: Name => self {
let (is_raw, s) = IdentIsRaw::split_from_symbol(self.as_str());
crate::tt::Ident{sym: Symbol::intern(s), span, is_raw }