Reduce backtracking in Lua “for” statement parsing. #66
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When parsing “for a in …” the parser will currently first try to match a rule of the form “for a = …” and then backtrack, causing the name “a” to be parsed twice. This refactoring delays the choice and avoids backtracking. This partly addresses the discussion in taocpp#32.
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When parsing “for a in …” the parser will currently first try to match a
rule of the form “for a = …” and then backtrack, causing the name “a” to
be parsed twice. This refactoring delays the choice and avoids backtracking.
This partly addresses the discussion in #32.