Parse macro invocations containing $ #96
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aryx
suggested changes
Jan 5, 2022
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| _non_delim_token: $ => choice( | ||
| $._non_special_token, | ||
| '$' |
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do we need other characters here? This is needed just for '$'?
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I believe $ is the only character we need to add here. _non_special_token is analogous to the first branch of the MacroMatch construction in the reference, which allows any token other than $ and delimiters.
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Sorry, I've been away from github for a few months. I'll take a look at this and see if I can rebase & address comments soon. |
Metavariables can only occur in macro transcribers, so matching them in invocations makes little sense. Instead, match $ and an identifier separately.
Allows deduplicating _common_token and _non_special_token
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Rebased to resolve merge conflicts. Removed special handling of metavariables ( |
aryx
approved these changes
Mar 8, 2022
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This looks good! I guess this can unblock your other PRs now! |
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Thanks for merging! I'll work on rebasing #93. |
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Closes #95.
Adds a set of productions for general delimited token trees. These productions do not attempt to find
macro_rules!-specific features like repetitions, and consider$to be a normal token. For backwards compatibility, use of the new productions aliases them totoken_tree.Blocks draft #93, which adds similar productions; #93 could be rebased on top of this if relevant.