40 lines
1.6 KiB
Rust
40 lines
1.6 KiB
Rust
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// This checks the behavior of how nested macro_rules definitions are handled
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// with regards to edition spans. Prior to https://github.com/rust-lang/rust/pull/133274,
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// the compiler would compile the inner macro with the edition of the local crate.
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// Afterwards, it uses the edition where the macro was *defined*.
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//
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// Unfortunately macro_rules compiler discards the edition of any *input* that
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// was used to generate the macro. This is possibly not the behavior that we
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// want. If we want to keep with the philosophy that code should follow the
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// edition rules of the crate where it is written, then presumably we would
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// want the input tokens to retain the edition of where they were written.
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//
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// See https://github.com/rust-lang/rust/issues/135669 for more.
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//
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// This has two revisions, one where local=2021 and the dep=2024. The other
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// revision is vice-versa.
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//@ revisions: e2021 e2024
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//@[e2021] edition:2021
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//@[e2024] edition:2024
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//@[e2021] aux-crate: nested_macro_rules_dep=nested_macro_rules_dep_2024.rs
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//@[e2024] aux-crate: nested_macro_rules_dep=nested_macro_rules_dep_2021.rs
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//@[e2024] check-pass
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mod with_input {
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// If we change the macro_rules input behavior, then this should pass when
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// local edition is 2021 because `gen` is written in a context with 2021
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// behavior. For local edition 2024, the reverse would be true and this
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// should fail.
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nested_macro_rules_dep::make_macro_with_input!{gen}
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macro_inner_input!{}
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//[e2021]~^ ERROR found reserved keyword
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}
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mod no_input {
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nested_macro_rules_dep::make_macro!{}
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macro_inner!{}
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//[e2021]~^ ERROR found reserved keyword
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}
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fn main() {}
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