tokenparsers.scala

来自「JAVA 语言的函数式编程扩展」· SCALA 代码 · 共 40 行

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2006-2007, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
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// $Id: TokenParsers.scala 14415 2008-03-19 00:53:09Z mihaylov $


package scala.util.parsing.combinator.syntactical

/** <p>
 *    This is the core component for token-based parsers. 
 *  </p>
 *  <p>
 *    @requires lexical a component providing the tokens consumed by the
 *    parsers in this component.
 *  </p>
 *
 *  @author Martin Odersky, Adriaan Moors
 */
trait TokenParsers extends Parsers {
  /** Tokens is the abstract type of the `Token's consumed by the parsers in this component*/
  type Tokens <: scala.util.parsing.syntax.Tokens
  
  /** lexical is the component responsible for consuming some basic kind of
   *  input (usually character-based) and turning it into the tokens
   *  understood by these parsers.
   */
  val lexical: Tokens

  /** The input-type for these parsers*/
  type Elem = lexical.Token
  
}