//! a literal `true` or `false` based on whether the given cfg matches the
//! current compilation environment.
+use crate::errors;
use rustc_ast as ast;
use rustc_ast::token;
use rustc_ast::tokenstream::TokenStream;
use rustc_attr as attr;
use rustc_errors::PResult;
use rustc_expand::base::{self, *};
-use rustc_macros::Diagnostic;
use rustc_span::Span;
pub fn expand_cfg(
}
}
-#[derive(Diagnostic)]
-#[diag(builtin_macros_requires_cfg_pattern)]
-struct RequiresCfgPattern {
- #[primary_span]
- #[label]
- span: Span,
-}
-
-#[derive(Diagnostic)]
-#[diag(builtin_macros_expected_one_cfg_pattern)]
-struct OneCfgPattern {
- #[primary_span]
- span: Span,
-}
-
fn parse_cfg<'a>(cx: &mut ExtCtxt<'a>, span: Span, tts: TokenStream) -> PResult<'a, ast::MetaItem> {
let mut p = cx.new_parser_from_tts(tts);
if p.token == token::Eof {
- return Err(cx.create_err(RequiresCfgPattern { span }));
+ return Err(cx.create_err(errors::RequiresCfgPattern { span }));
}
let cfg = p.parse_meta_item()?;
let _ = p.eat(&token::Comma);
if !p.eat(&token::Eof) {
- return Err(cx.create_err(OneCfgPattern { span }));
+ return Err(cx.create_err(errors::OneCfgPattern { span }));
}
Ok(cfg)