bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

delay expand macro bang when there has indeterminate path

Browse source
This commit is contained in:
bohan 2024-03-12 10:55:17 +08:00
parent 5a6c1aa2bc
commit 8fcdf54a6b
22 changed files with 509 additions and 263 deletions
Download patch file Download diff file Expand all files Collapse all files

25
compiler/rustc_builtin_macros/src/concat.rs
View file

@ -1,6 +1,7 @@
use rustc_ast::tokenstream::TokenStream;
use rustc_ast::{ExprKind, LitKind, UnOp};
use rustc_expand::base::{get_exprs_from_tts, DummyResult, ExtCtxt, MacEager, MacResult};
use rustc_expand::base::get_exprs_from_tts;
use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpanderResult};
use rustc_session::errors::report_lit_error;
use rustc_span::symbol::Symbol;
@ -10,10 +11,13 @@ pub fn expand_concat(
cx: &mut ExtCtxt<'_>,
sp: rustc_span::Span,
tts: TokenStream,
) -> Box<dyn MacResult + 'static> {
let es = match get_exprs_from_tts(cx, tts) {
) -> MacroExpanderResult<'static> {
let ExpandResult::Ready(mac) = get_exprs_from_tts(cx, tts) else {
return ExpandResult::Retry(());
};
let es = match mac {
Ok(es) => es,
Err(guar) => return DummyResult::any(sp, guar),
Err(guar) => return ExpandResult::Ready(DummyResult::any(sp, guar)),
};
let mut accumulator = String::new();
let mut missing_literal = vec![];
@ -70,12 +74,13 @@ pub fn expand_concat(
}
}
if !missing_literal.is_empty() {
ExpandResult::Ready(if !missing_literal.is_empty() {
let guar = cx.dcx().emit_err(errors::ConcatMissingLiteral { spans: missing_literal });
return DummyResult::any(sp, guar);
DummyResult::any(sp, guar)
} else if let Some(guar) = guar {
return DummyResult::any(sp, guar);
}
let sp = cx.with_def_site_ctxt(sp);
MacEager::expr(cx.expr_str(sp, Symbol::intern(&accumulator)))
DummyResult::any(sp, guar)
} else {
let sp = cx.with_def_site_ctxt(sp);
MacEager::expr(cx.expr_str(sp, Symbol::intern(&accumulator)))
})
}