mbe: Gracefully handle macro rules that end after =>
#143408
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Add a test for various cases of invalid macro definitions. Closes: rust-lang#143351
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mbe: Defer checks for `compile_error!` until reporting an unused macro rule The current MBE parser checks rules at initial parse time to see if their RHS has `compile_error!` in it, and returns a list of rule indexes and LHS spans that don't map to `compile_error!`, for use in unused macro rule checking. Instead, have the unused macro rule reporting ask the macro for the rule to report, and let the macro check at that time. That avoids checking rules unless they're unused. In the process, refactor the data structure used to store macro rules, to group the LHS and RHS (and LHS span) of each rule together, and refactor the unused rule tracking to only track rule indexes. This builds atop a couple of minor MBE refactors. I would suggest reviewing commit-by-commit. This PR builds atop the fix for #143408 to avoid conflicts.
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mbe: Defer checks for `compile_error!` until reporting an unused macro rule The current MBE parser checks rules at initial parse time to see if their RHS has `compile_error!` in it, and returns a list of rule indexes and LHS spans that don't map to `compile_error!`, for use in unused macro rule checking. Instead, have the unused macro rule reporting ask the macro for the rule to report, and let the macro check at that time. That avoids checking rules unless they're unused. In the process, refactor the data structure used to store macro rules, to group the LHS and RHS (and LHS span) of each rule together, and refactor the unused rule tracking to only track rule indexes. This builds atop a couple of minor MBE refactors. I would suggest reviewing commit-by-commit. This PR builds atop the fix for #143408 to avoid conflicts.
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…piler-errors mbe: Gracefully handle macro rules that end after `=>` Add a test for various cases of invalid macro definitions. Closes: rust-lang#143351
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Rollup of 9 pull requests Successful merges: - #141532 (std: sys: net: uefi: tcp4: Implement write) - #143085 (Port `#[non_exhaustive]` to the new attribute parsing infrastructure) - #143298 (`tests/ui`: A New Order [23/N]) - #143372 (Remove names_imported_by_glob_use query.) - #143386 (Assign dependency bump PRs to me) - #143406 (Remove some unnecessary `unsafe` in VecCache) - #143408 (mbe: Gracefully handle macro rules that end after `=>`) - #143414 (remove special-casing of boxes from match exhaustiveness/usefulness analysis) - #143444 (clean up GVN TypeId test) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 8 pull requests Successful merges: - #141532 (std: sys: net: uefi: tcp4: Implement write) - #143085 (Port `#[non_exhaustive]` to the new attribute parsing infrastructure) - #143372 (Remove names_imported_by_glob_use query.) - #143386 (Assign dependency bump PRs to me) - #143406 (Remove some unnecessary `unsafe` in VecCache) - #143408 (mbe: Gracefully handle macro rules that end after `=>`) - #143414 (remove special-casing of boxes from match exhaustiveness/usefulness analysis) - #143444 (clean up GVN TypeId test) r? `@ghost` `@rustbot` modify labels: rollup
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Add a test for various cases of invalid macro definitions.
Closes: #143351