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An ellipsis (...) can only be placed at the beginning

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Nobuyoshi Nakada 2020-10-29 17:37:29 +09:00
parent 9f3adaf529
commit bf951c763d
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1 changed files with 6 additions and 2 deletions
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8
tool/ruby_vm/loaders/insns_def.rb
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@ -25,10 +25,10 @@ grammar = %r'
(?<ws> \g<comment> | \s ){0}
(?<ident> [_a-zA-Z] [0-9_a-zA-Z]* ){0}
(?<type> (?: \g<keyword> \g<ws>+ )* \g<ident> ){0}
(?<arg> \g<type> \g<ws>+ \g<ident> | \.\.\. ){0}
(?<arg> \g<type> \g<ws>+ \g<ident> ){0}
(?<argv> (?# empty ) |
void |
\g<arg> (?: \g<ws>* , \g<ws>* \g<arg> \g<ws>* )* ){0}
(?: \.\.\. | \g<arg>) (?: \g<ws>* , \g<ws>* \g<arg> \g<ws>* )* ){0}
(?<pragma> \g<ws>* // \s* attr \g<ws>+
(?<pragma:type> \g<type> ) \g<ws>+
(?<pragma:name> \g<ident> ) \g<ws>*
@ -57,6 +57,10 @@ until scanner.eos? do
ope = split.(scanner["insn:opes"])
pop = split.(scanner["insn:pops"])
ret = split.(scanner["insn:rets"])
if ope.include?("...")
raise sprintf("parse error at %s:%d:%s: operands cannot be variadic",
scanner.__FILE__, scanner.__LINE__, name)
end
attrs = []
while l2 = scanner.scan(/\G#{grammar}\g<pragma>/o) do