org.parboiled.scala.parserunners.RecoveringParseRunner.scala Maven / Gradle / Ivy

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Elegant parsing in Java and Scala - lightweight, easy-to-use, powerful

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/*
 * Copyright (C) 2009-2011 Mathias Doenitz
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.parboiled.scala
package parserunners

import org.parboiled.parserunners.{RecoveringParseRunner => PRecoveringParseRunner}

/**
 * A simple wrapper for org.parboiled.parserunners.RecoveringParseRunner which returns a scala ParsingResult.
 * Note that the ParseRunner only accepts rules with zero or one value type parameter, as parsers leaving more
 * than one value on the value stack are considered to be bad style.
 */
object RecoveringParseRunner {

  /**
   * Create a RecoveringParseRunner for the given rule.
   */
  def apply(rule: Rule0): RecoveringParseRunner[Nothing] = apply(rule, Long.MaxValue)
  
  /**
   * Create a RecoveringParseRunner for the given rule.
   * The timeout value specifies the maximum number of milliseconds a parsing run may take. If the run takes longer
   * it will be terminated with a org.parboiled.parserunners.RecoveringParseRunner.TimeoutException.
   */
  def apply(rule: Rule0, timeout: Long) = {
    new RecoveringParseRunner[Nothing](new PRecoveringParseRunner[Nothing](rule, timeout))
  }

  /**
   * Create a RecoveringParseRunner for the given rule.
   */
  def apply[V](rule: Rule1[V]): RecoveringParseRunner[V] = apply(rule, Long.MaxValue)
  
  /**
   * Create a RecoveringParseRunner for the given rule.
   * The timeout value specifies the maximum number of milliseconds a parsing run may take. If the run takes longer
   * it will be terminated with a org.parboiled.parserunners.RecoveringParseRunner.TimeoutException.
   */
  def apply[V](rule: Rule1[V], timeout: Long = Long.MaxValue) = {
    new RecoveringParseRunner[V](new PRecoveringParseRunner[V](rule, timeout))
  }
}

class RecoveringParseRunner[V](val inner: PRecoveringParseRunner[V]) extends ParseRunner[V] {
  def run(input: Input): ParsingResult[V] = ParsingResult(inner.run(input.inputBuffer))
}