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Add test for redundant_semicolon lint interaction with proc macro attrs
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src/test/ui/lint/redundant-semicolon/auxiliary/redundant-semi-proc-macro-def.rs
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// force-host | ||
// no-prefer-dynamic | ||
#![crate_type="proc-macro"] | ||
#![crate_name="redundant_semi_proc_macro"] | ||
extern crate proc_macro; | ||
use proc_macro::TokenStream; | ||
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#[proc_macro_attribute] | ||
pub fn should_preserve_spans(_attr: TokenStream, item: TokenStream) -> TokenStream { | ||
eprintln!("{:?}", item); | ||
item | ||
} |
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src/test/ui/lint/redundant-semicolon/redundant-semi-proc-macro.rs
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// aux-build:redundant-semi-proc-macro-def.rs | ||
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#![deny(redundant_semicolon)] | ||
extern crate redundant_semi_proc_macro; | ||
use redundant_semi_proc_macro::should_preserve_spans; | ||
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#[should_preserve_spans] | ||
fn span_preservation() { | ||
let tst = 123;; //~ ERROR unnecessary trailing semicolon | ||
match tst { | ||
// Redundant semicolons are parsed as empty tuple exprs | ||
// for the lint, so ensure the lint doesn't affect | ||
// empty tuple exprs explicitly in source. | ||
123 => (), | ||
_ => () | ||
};;; //~ ERROR unnecessary trailing semicolons | ||
} | ||
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fn main() {} |
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src/test/ui/lint/redundant-semicolon/redundant-semi-proc-macro.stderr
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TokenStream [Ident { ident: "fn", span: #0 bytes(197..199) }, Ident { ident: "span_preservation", span: #0 bytes(200..217) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(217..219) }, Group { delimiter: Brace, stream: TokenStream [Ident { ident: "let", span: #0 bytes(227..230) }, Ident { ident: "tst", span: #0 bytes(231..234) }, Punct { ch: '=', spacing: Alone, span: #0 bytes(235..236) }, Literal { lit: Lit { kind: Integer, symbol: 123, suffix: None }, span: Span { lo: BytePos(237), hi: BytePos(240), ctxt: #0 } }, Punct { ch: ';', spacing: Joint, span: #0 bytes(240..241) }, Punct { ch: ';', spacing: Alone, span: #0 bytes(241..242) }, Ident { ident: "match", span: #0 bytes(288..293) }, Ident { ident: "tst", span: #0 bytes(294..297) }, Group { delimiter: Brace, stream: TokenStream [Literal { lit: Lit { kind: Integer, symbol: 123, suffix: None }, span: Span { lo: BytePos(482), hi: BytePos(485), ctxt: #0 } }, Punct { ch: '=', spacing: Joint, span: #0 bytes(486..488) }, Punct { ch: '>', spacing: Alone, span: #0 bytes(486..488) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(489..491) }, Punct { ch: ',', spacing: Alone, span: #0 bytes(491..492) }, Ident { ident: "_", span: #0 bytes(501..502) }, Punct { ch: '=', spacing: Joint, span: #0 bytes(503..505) }, Punct { ch: '>', spacing: Alone, span: #0 bytes(503..505) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(506..508) }], span: #0 bytes(298..514) }, Punct { ch: ';', spacing: Joint, span: #0 bytes(514..515) }, Punct { ch: ';', spacing: Joint, span: #0 bytes(515..516) }, Punct { ch: ';', spacing: Alone, span: #0 bytes(516..517) }], span: #0 bytes(221..561) }] | ||
error: unnecessary trailing semicolon | ||
--> $DIR/redundant-semi-proc-macro.rs:9:19 | ||
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LL | let tst = 123;; | ||
| ^ help: remove this semicolon | ||
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note: lint level defined here | ||
--> $DIR/redundant-semi-proc-macro.rs:3:9 | ||
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LL | #![deny(redundant_semicolon)] | ||
| ^^^^^^^^^^^^^^^^^^^ | ||
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error: unnecessary trailing semicolons | ||
--> $DIR/redundant-semi-proc-macro.rs:16:7 | ||
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LL | };;; | ||
| ^^ help: remove these semicolons | ||
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error: aborting due to 2 previous errors | ||
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