scala.util.parsing.combinator.syntactical.StandardTokenParsers.scala Maven / Gradle / Ivy
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Standard library for the Scala Programming Language
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.util.parsing
package combinator
package syntactical
import token._
import lexical.StdLexical
import scala.language.implicitConversions
/** This component provides primitive parsers for the standard tokens defined in `StdTokens`.
*
* @author Martin Odersky, Adriaan Moors
*/
class StandardTokenParsers extends StdTokenParsers {
type Tokens = StdTokens
val lexical = new StdLexical
//an implicit keyword function that gives a warning when a given word is not in the reserved/delimiters list
override implicit def keyword(chars : String): Parser[String] =
if(lexical.reserved.contains(chars) || lexical.delimiters.contains(chars)) super.keyword(chars)
else failure("You are trying to parse \""+chars+"\", but it is neither contained in the delimiters list, nor in the reserved keyword list of your lexical object")
}