bjoernager/rust
bjoernager/rust
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Create E0777 error code for "invalid literal in derive"

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This commit is contained in:
Guillaume Gomez 2020-10-01 18:39:47 +02:00
parent 782013564e
commit de21c3df0e
5 changed files with 44 additions and 4 deletions
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13
compiler/rustc_expand/src/proc_macro.rs
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@ -5,7 +5,7 @@ use rustc_ast::token;
use rustc_ast::tokenstream::{TokenStream, TokenTree};
use rustc_ast::{self as ast, *};
use rustc_data_structures::sync::Lrc;
use rustc_errors::{Applicability, ErrorReported};
use rustc_errors::{struct_span_err, Applicability, ErrorReported};
use rustc_parse::nt_to_tokenstream;
use rustc_span::symbol::sym;
use rustc_span::{Span, DUMMY_SP};
@ -182,9 +182,14 @@ crate fn collect_derives(cx: &mut ExtCtxt<'_>, attrs: &mut Vec<ast::Attribute>)
.filter_map(|nmi| match nmi {
NestedMetaItem::Literal(lit) => {
error_reported_filter_map = true;
cx.struct_span_err(lit.span, "expected path to a trait, found literal")
.help("for example, write `#[derive(Debug)]` for `Debug`")
.emit();
struct_span_err!(
cx.sess,
lit.span,
E0777,
"expected path to a trait, found literal",
)
.help("for example, write `#[derive(Debug)]` for `Debug`")
.emit();
None
}
NestedMetaItem::MetaItem(mi) => Some(mi),