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