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Accept arbitrary expressions in key-value attributes at parse time

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This commit is contained in:
Vadim Petrochenkov 2020-11-07 16:09:40 +03:00
parent fa55f668e5
commit 31d72c2658
24 changed files with 145 additions and 210 deletions
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4
compiler/rustc_ast_passes/src/feature_gate.rs
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@ -630,6 +630,10 @@ pub fn check_crate(krate: &ast::Crate, sess: &Session) {
gate_all!(const_trait_impl, "const trait impls are experimental");
gate_all!(half_open_range_patterns, "half-open range patterns are unstable");
gate_all!(inline_const, "inline-const is experimental");
gate_all!(
extended_key_value_attributes,
"arbitrary expressions in key-value attributes are unstable"
);
if sess.parse_sess.span_diagnostic.err_count() == 0 {
// Errors for `destructuring_assignment` can get quite noisy, especially where `_` is
// involved, so we only emit errors where there are no other parsing errors.