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lihaoyi/gist:4dfc76939844da6e1db8

Created May 12, 2015 06:24
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Monadic Parsers
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gistfile1.scala
@ load.ivy("com.lihaoyi" %% "fastparse" % "0.1.4")
@ import fastparse._
import fastparse._
@ val parser = P( "a".rep1.!.flatMap(s => ("b" * s.length) ~ ("c" * s.length)) )
parser: fastparse.Parser[Unit] = parser
@ parser.parse("aaa")
res4: fastparse.core.Result[Unit] = Failure(parser:0 / "bbb":3 ..."", false)
@ parser.parse("aaabbbcc")
res5: fastparse.core.Result[Unit] = Failure(parser:0 / "ccc":6 ..."cc", false)
@ parser.parse("aaaabcccc")
res6: fastparse.core.Result[Unit] = Failure(parser:0 / "bbbb":4 ..."bcccc", false)
@ parser.parse("aaaaabbbbbccccc")
res7: fastparse.core.Result[Unit] = Success((), 15)
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