Macros have scope #5120
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Macros have scope #5120
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Macro scope is now delimited by function, block, and module boundaries, except for modules that are marked with #[macro_escape], which allows macros to escape.
| macro_rules! without_macro_scoping( | ||
| ($extsexpr:expr,$exp:expr) => | ||
| ({ | ||
| // only evaluaate this once: |
|
r? @pcwalton : typo fixes, renamings |
bors
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r? After this patch, macros declared in a module, function, or block can only be used inside of that module, function or block, with the exception of modules declared with the #[macro_escape] attribute; these modules allow macros to escape, and can be used as a limited macro export mechanism. This pull request also includes miscellaneous comments, lots of new test cases, a few renamings, and a few as-yet-unused data definitions for hygiene.
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bors
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May 2, 2020
…flip1995 Split up `drop_forget_ref` ui test Part of rust-lang#2038 changelog: none
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r?
After this patch, macros declared in a module, function, or block can only be used inside of that module, function or block, with the exception of modules declared with the #[macro_escape] attribute; these modules allow macros to escape, and can be used as a limited macro export mechanism.
This pull request also includes miscellaneous comments, lots of new test cases, a few renamings, and a few as-yet-unused data definitions for hygiene.