rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki 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

14
compiler/rustc_builtin_macros/src/compile_error.rs
View File

@@ -1,22 +1,26 @@
// The compiler code necessary to support the compile_error! extension.
use rustc_ast::tokenstream::TokenStream;
use rustc_expand::base::{get_single_str_from_tts, DummyResult, ExtCtxt, MacResult};
use rustc_expand::base::get_single_str_from_tts;
use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult};
use rustc_span::Span;
pub fn expand_compile_error<'cx>(
cx: &'cx mut ExtCtxt<'_>,
sp: Span,
tts: TokenStream,
) -> Box<dyn MacResult + 'cx> {
let var = match get_single_str_from_tts(cx, sp, tts, "compile_error!") {
) -> MacroExpanderResult<'cx> {
let ExpandResult::Ready(mac) = get_single_str_from_tts(cx, sp, tts, "compile_error!") else {
return ExpandResult::Retry(());
};
let var = match mac {
Ok(var) => var,
Err(guar) => return DummyResult::any(sp, guar),
Err(guar) => return ExpandResult::Ready(DummyResult::any(sp, guar)),
};
#[expect(rustc::diagnostic_outside_of_impl, reason = "diagnostic message is specified by user")]
#[expect(rustc::untranslatable_diagnostic, reason = "diagnostic message is specified by user")]
let guar = cx.dcx().span_err(sp, var.to_string());
DummyResult::any(sp, guar)
ExpandResult::Ready(DummyResult::any(sp, guar))
}