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Stanford Parser processes raw text in English, Chinese, German, Arabic, and French, and extracts constituency parse trees.
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package edu.stanford.nlp.ling.tokensregex;

import java.util.function.Function;
import edu.stanford.nlp.util.Interval;
import edu.stanford.nlp.util.StringUtils;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
* Basic results for a Sequence Match
*
* @author Angel Chang
*/
public class BasicSequenceMatchResult implements SequenceMatchResult {

  SequencePattern pattern;     // Pattern we matched against
  List elements;      // Original sequence
  MatchedGroup[] matchedGroups;    // Groups that we matched
  Object[] matchedResults;         // Additional information about matches (per element)
  Function, String> nodesToStringConverter;
  SequencePattern.VarGroupBindings varGroupBindings;
  double score = 0.0;
  double priority = 0.0;
  int order;

  @Override
  public List elements() { return elements; }
  @Override
  public SequencePattern pattern() { return pattern; }

//  public static  BasicSequenceMatchResult toBasicSequenceMatchResult(List elements) {
//    BasicSequenceMatchResult matchResult = new BasicSequenceMatchResult();
//    matchResult.elements = elements;
//    matchResult.matchedGroups = new MatchedGroup[0];
//    return matchResult;
//  }

  @Override
  public BasicSequenceMatchResult toBasicSequenceMatchResult() {
    return copy();
  }

  public BasicSequenceMatchResult copy() {
    BasicSequenceMatchResult res = new BasicSequenceMatchResult<>();
    res.pattern = pattern;
    res.elements = elements;
    res.matchedGroups = new MatchedGroup[matchedGroups.length];
    res.nodesToStringConverter = nodesToStringConverter;
    res.score = score;
    res.priority = priority;
    res.order = order;
    res.varGroupBindings = varGroupBindings;
    for (int i = 0; i < matchedGroups.length; i++ ) {
      if (matchedGroups[i] != null) {
        res.matchedGroups[i] = new MatchedGroup(matchedGroups[i]);
      }
    }
    if (matchedResults != null) {
      res.matchedResults = new Object[matchedResults.length];
      System.arraycopy(res.matchedResults, 0, matchedResults, 0, matchedResults.length);
    }
    return res;
  }

  @Override
  public Interval getInterval() {
    return TO_INTERVAL.apply(this);
  }

  @Override
  public int getOrder() {
    return order;
  }

  public void setOrder(int order) {
    this.order = order;
  }

  @Override
  public double priority() {
    return priority;
  }

  @Override
  public double score() {
    return score;
  }

  @Override
  public int start() {
    return start(0);
  }

  @Override
  public int start(int group) {
    if (group == GROUP_BEFORE_MATCH) {
      return 0;
    } else if (group == GROUP_AFTER_MATCH) {
      return matchedGroups[0].matchEnd;
    }
    if (matchedGroups[group] != null) {
      return matchedGroups[group].matchBegin;
    } else {
      return -1;
    }
  }

  @Override
  public int start(String var) {
    int g = getFirstVarGroup(var);
    if (g >= 0) {
      return start(g);
    } else {
      return -1;
    }
  }

  @Override
  public int end() {
    return end(0);
  }

  @Override
  public int end(int group) {
    if (group == GROUP_BEFORE_MATCH) {
      return matchedGroups[0].matchBegin;
    } else if (group == GROUP_AFTER_MATCH) {
      return elements.size();
    }
    if (matchedGroups[group] != null) {
      return matchedGroups[group].matchEnd;
    } else {
      return -1;
    }
  }

  @Override
  public int end(String var) {
    int g = getFirstVarGroup(var);
    if (g >= 0) {
      return end(g);
    } else {
      return -1;
    }
  }

  @Override
  public String group() {
    return group(0);
  }

  @Override
  public String group(int group) {
    List groupTokens = groupNodes(group);
    if (nodesToStringConverter == null) {
      return (groupTokens != null)? StringUtils.join(groupTokens, " "): null;
    } else {
      return nodesToStringConverter.apply(groupTokens);
    }
  }

  @Override
  public String group(String var) {
    int g = getFirstVarGroup(var);
    if (g >= 0) {
      return group(g);
    } else {
      return null;
    }
  }

  @Override
  public List groupNodes() {
    return groupNodes(0);
  }

  @Override
  public List groupNodes(int group) {
    if (group == GROUP_BEFORE_MATCH || group == GROUP_AFTER_MATCH) {
      // return a new list so the resulting object is serializable
      return new ArrayList<>(elements.subList(start(group), end(group)));
    }
    if (matchedGroups.length > group && matchedGroups[group] != null) {
      // return a new list so the resulting object is serializable
      return new ArrayList<>(elements.subList(matchedGroups[group].matchBegin, matchedGroups[group].matchEnd));
    } else {
      return null;
    }
  }

  @Override
  public List groupNodes(String var) {
    int g = getFirstVarGroup(var);
    if (g >= 0) {
      return groupNodes(g);
    } else {
      return null;
    }
  }

  @Override
  public Object groupValue() {
    return groupValue(0);
  }

  @Override
  public Object groupValue(int group) {
    if (group == GROUP_BEFORE_MATCH || group == GROUP_AFTER_MATCH) {
      // return a new list so the resulting object is serializable
      return new ArrayList<>(elements.subList(start(group), end(group)));
    }
    if (matchedGroups[group] != null) {
      return matchedGroups[group].value;
    } else {
      return null;
    }
  }

  @Override
  public Object groupValue(String var) {
    int g = getFirstVarGroup(var);
    if (g >= 0) {
      return groupValue(g);
    } else {
      return null;
    }
  }

  @Override
  public MatchedGroupInfo groupInfo() {
    return groupInfo(0);
  }

  @Override
  public MatchedGroupInfo groupInfo(int group) {
    List nodes = groupNodes(group);
    if (nodes != null) {
      Object value = groupValue(group);
      String text = group(group);
      List