58 lines
796 B
Ruby
Executable File
58 lines
796 B
Ruby
Executable File
def main
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prelude
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grammar
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usercode
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end
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def prelude
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while line = ARGF.gets
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case line
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when %r</\*%%%\*/>
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puts '/*'
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when %r</\*%>
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puts '*/'
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when %r<%\*/>
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puts
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when /\A%%/
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puts '%%'
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return
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when /\A%token/
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puts line.sub(/<\w+>/, '<val>')
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when /\A%type/
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puts line.sub(/<\w+>/, '<val>')
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else
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print line
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end
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end
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end
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def grammar
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while line = ARGF.gets
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case line
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when %r</\*%%%\*/>
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puts '#if 0'
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when %r</\*%c%\*/>
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puts '/*'
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when %r</\*%c>
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puts '*/'
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when %r</\*%>
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puts '#endif'
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when %r<%\*/>
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puts
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when /\A%%/
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puts '%%'
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return
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else
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print line
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end
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end
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end
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def usercode
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while line = ARGF.gets
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print line
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end
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end
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main
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