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58 changes: 58 additions & 0 deletions
58
tests/ui/macros/macro-metavar-expr-concat/feature-gate-macro-metavar-expr-concat.rs
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//@ run-pass | ||
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#![allow(dead_code, non_camel_case_types, non_upper_case_globals)] | ||
#![feature(macro_metavar_expr_concat)] | ||
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macro_rules! create_things { | ||
($lhs:ident) => { | ||
struct ${concat($lhs, _separated_idents_in_a_struct)} { | ||
foo: i32, | ||
${concat($lhs, _separated_idents_in_a_field)}: i32, | ||
} | ||
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mod ${concat($lhs, _separated_idents_in_a_module)} { | ||
pub const FOO: () = (); | ||
} | ||
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fn ${concat($lhs, _separated_idents_in_a_fn)}() {} | ||
}; | ||
} | ||
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macro_rules! many_idents { | ||
($a:ident, $c:ident) => { | ||
const ${concat($a, B, $c, D)}: i32 = 1; | ||
}; | ||
} | ||
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macro_rules! valid_tts { | ||
($_0:tt, $_1:tt) => { | ||
const ${concat($_0, $_1)}: i32 = 1; | ||
} | ||
} | ||
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macro_rules! without_dollar_sign_is_an_ident { | ||
($ident:ident) => { | ||
const ${concat(VAR, ident)}: i32 = 1; | ||
const ${concat(VAR, $ident)}: i32 = 2; | ||
}; | ||
} | ||
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fn main() { | ||
create_things!(behold); | ||
behold_separated_idents_in_a_fn(); | ||
let _ = behold_separated_idents_in_a_module::FOO; | ||
let _ = behold_separated_idents_in_a_struct { | ||
foo: 1, | ||
behold_separated_idents_in_a_field: 2, | ||
}; | ||
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many_idents!(A, C); | ||
assert_eq!(ABCD, 1); | ||
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valid_tts!(X, YZ); | ||
assert_eq!(XYZ, 1); | ||
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without_dollar_sign_is_an_ident!(_123); | ||
assert_eq!(VARident, 1); | ||
assert_eq!(VAR_123, 2); | ||
} |
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#![feature(macro_metavar_expr_concat)] | ||
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macro_rules! join { | ||
($lhs:ident, $rhs:ident) => { | ||
${concat($lhs, $rhs)} | ||
//~^ ERROR cannot find value `abcdef` in this scope | ||
}; | ||
} | ||
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fn main() { | ||
let abcdef = 1; | ||
let _another = join!(abc, def); | ||
} |
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error[E0425]: cannot find value `abcdef` in this scope | ||
--> $DIR/hygiene.rs:5:10 | ||
| | ||
LL | ${concat($lhs, $rhs)} | ||
| ^^^^^^^^^^^^^^^^^^^^ not found in this scope | ||
... | ||
LL | let _another = join!(abc, def); | ||
| --------------- in this macro invocation | ||
| | ||
= note: this error originates in the macro `join` (in Nightly builds, run with -Z macro-backtrace for more info) | ||
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error: aborting due to 1 previous error | ||
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For more information about this error, try `rustc --explain E0425`. |
16 changes: 16 additions & 0 deletions
16
tests/ui/macros/macro-metavar-expr-concat/raw-identifiers.rs
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#![feature(macro_metavar_expr_concat)] | ||
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macro_rules! join { | ||
($lhs:ident, $rhs:ident) => { | ||
let ${concat($lhs, $rhs)}: () = (); | ||
//~^ ERROR `${concat(..)}` currently does not support raw identifiers | ||
//~| ERROR `${concat(..)}` currently does not support raw identifiers | ||
//~| ERROR `${concat(..)}` currently does not support raw identifiers | ||
}; | ||
} | ||
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fn main() { | ||
join!(r#_c, d); | ||
join!(_e, r#f); | ||
join!(r#_g, r#h); | ||
} |
22 changes: 22 additions & 0 deletions
22
tests/ui/macros/macro-metavar-expr-concat/raw-identifiers.stderr
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error: `${concat(..)}` currently does not support raw identifiers | ||
--> $DIR/raw-identifiers.rs:5:23 | ||
| | ||
LL | let ${concat($lhs, $rhs)}: () = (); | ||
| ^^^ | ||
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error: `${concat(..)}` currently does not support raw identifiers | ||
--> $DIR/raw-identifiers.rs:5:29 | ||
| | ||
LL | let ${concat($lhs, $rhs)}: () = (); | ||
| ^^^ | ||
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error: `${concat(..)}` currently does not support raw identifiers | ||
--> $DIR/raw-identifiers.rs:5:23 | ||
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LL | let ${concat($lhs, $rhs)}: () = (); | ||
| ^^^ | ||
| | ||
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` | ||
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error: aborting due to 3 previous errors | ||
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