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| # Returns `yes` if standing in front of what will become a LEADING_AND or | ||
| # LEADING_OR, ie TERMINATOR followed by && or || | ||
| isLeadingLogical: (i) -> | ||
| @tag(i) is 'TERMINATOR' and @tag(i + 1) in LEADING_LOGICAL |
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I would think that you shouldn’t need to use the rewriter for this. The regular lexer often looks multiple tokens ahead; whenever it sees an and/or token followed by a terminator, it could create it as LEADING_AND or LEADING_OR in the first place rather than needing the rewriter to make another pass.
In general everything in rewriter.coffee is hacks that are unfortunate workarounds, and we want to avoid adding to the rewriter if at all possible. Each rewrite pass adds a performance hit to compilation.
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Rebased #5279