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Add meta-variable checks in macro definitions #62008

Merged
merged 2 commits into from
Jul 20, 2019
Merged

Add meta-variable checks in macro definitions #62008

merged 2 commits into from
Jul 20, 2019
+946 −68

Commits on Jul 19, 2019

  1. Remember the span of the Kleene operator in macros 

    This is needed for having complete error messages where reporting macro variable
errors. Here is what they would look like:

error: meta-variable repeats with different kleene operator
  --> $DIR/issue-61053-different-kleene.rs:3:57
   |
LL |     ( $( $i:ident = $($j:ident),+ );* ) => { $( $( $i = $j; )* )* };
   |                                 - expected repetition   ^^   - conflicting repetition
    @ia0
    ia0 committed Jul 19, 2019
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  2. Implement checks for meta-variables in macros

    @ia0
    ia0 committed Jul 19, 2019
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