mirror of
https://github.com/rust-lang/rust.git
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316bc1c67c
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\asm.rs:306:28
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306 | fn err_duplicate_option(p: &mut Parser<'_>, symbol: Symbol, span: Span) {
| ^^^^^^^^^^^^^^^ help: consider changing to: `&Parser<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\asm.rs:318:8
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318 | p: &mut Parser<'a>,
| ^^^^^^^^^^^^^^^ help: consider changing to: `&Parser<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\assert.rs:114:25
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114 | fn parse_assert<'a>(cx: &mut ExtCtxt<'a>, sp: Span, stream: TokenStream) -> PResult<'a, Assert> {
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\asm.rs:32:10
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32 | ecx: &mut ExtCtxt<'a>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\test.rs:99:9
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99 | cx: &mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\source_util.rs:237:9
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237 | cx: &mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\format.rs:809:10
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809 | ecx: &mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\format.rs:737:10
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737 | ecx: &mut ExtCtxt<'a>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\format.rs:68:24
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68 | fn parse_args<'a>(ecx: &mut ExtCtxt<'a>, sp: Span, tts: TokenStream) -> PResult<'a, MacroInput> {
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\format.rs:607:10
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607 | ecx: &mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\edition_panic.rs:43:9
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43 | cx: &'cx mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\concat_bytes.rs:11:9
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11 | cx: &mut ExtCtxt<'_>,
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\cfg.rs:38:22
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38 | fn parse_cfg<'a>(cx: &mut ExtCtxt<'a>, span: Span, tts: TokenStream) -> PResult<'a, ast::MetaItem> {
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'a>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
warning: this argument is a mutable reference, but not used mutably
--> compiler\rustc_builtin_macros\src\cfg_accessible.rs:13:28
|
13 | fn validate_input<'a>(ecx: &mut ExtCtxt<'_>, mi: &'a ast::MetaItem) -> Option<&'a ast::Path> {
| ^^^^^^^^^^^^^^^^ help: consider changing to: `&ExtCtxt<'_>`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_ref_mut
87 lines
2.6 KiB
Rust
87 lines
2.6 KiB
Rust
use rustc_ast::ptr::P;
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use rustc_ast::token::Delimiter;
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use rustc_ast::tokenstream::{DelimSpan, TokenStream};
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use rustc_ast::*;
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use rustc_expand::base::*;
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use rustc_span::edition::Edition;
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use rustc_span::symbol::sym;
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use rustc_span::Span;
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/// This expands to either
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/// - `$crate::panic::panic_2015!(...)` or
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/// - `$crate::panic::panic_2021!(...)`
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/// depending on the edition.
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///
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/// This is used for both std::panic!() and core::panic!().
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///
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/// `$crate` will refer to either the `std` or `core` crate depending on which
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/// one we're expanding from.
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pub fn expand_panic<'cx>(
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cx: &'cx mut ExtCtxt<'_>,
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sp: Span,
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tts: TokenStream,
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) -> MacroExpanderResult<'cx> {
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let mac = if use_panic_2021(sp) { sym::panic_2021 } else { sym::panic_2015 };
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expand(mac, cx, sp, tts)
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}
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/// This expands to either
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/// - `$crate::panic::unreachable_2015!(...)` or
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/// - `$crate::panic::unreachable_2021!(...)`
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/// depending on the edition.
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pub fn expand_unreachable<'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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) -> MacroExpanderResult<'cx> {
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let mac = if use_panic_2021(sp) { sym::unreachable_2021 } else { sym::unreachable_2015 };
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expand(mac, cx, sp, tts)
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}
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fn expand<'cx>(
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mac: rustc_span::Symbol,
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cx: &'cx ExtCtxt<'_>,
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sp: Span,
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tts: TokenStream,
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) -> MacroExpanderResult<'cx> {
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let sp = cx.with_call_site_ctxt(sp);
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ExpandResult::Ready(MacEager::expr(
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cx.expr(
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sp,
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ExprKind::MacCall(P(MacCall {
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path: Path {
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span: sp,
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segments: cx
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.std_path(&[sym::panic, mac])
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.into_iter()
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.map(|ident| PathSegment::from_ident(ident))
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.collect(),
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tokens: None,
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},
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args: P(DelimArgs {
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dspan: DelimSpan::from_single(sp),
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delim: Delimiter::Parenthesis,
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tokens: tts,
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}),
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})),
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),
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))
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}
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pub fn use_panic_2021(mut span: Span) -> bool {
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// To determine the edition, we check the first span up the expansion
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// stack that does not have #[allow_internal_unstable(edition_panic)].
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// (To avoid using the edition of e.g. the assert!() or debug_assert!() definition.)
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loop {
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let expn = span.ctxt().outer_expn_data();
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if let Some(features) = expn.allow_internal_unstable {
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if features.iter().any(|&f| f == sym::edition_panic) {
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span = expn.call_site;
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continue;
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}
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}
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break expn.edition >= Edition::Edition2021;
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}
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}
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