Android Open Source - interdroid-swan Logic Expression

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License

The source code is released under:

Copyright (c) 2008-2011 Vrije Universiteit, The Netherlands All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the follo...

Java Source Code

package interdroid.swan.swansong;
/*w  w w . j  a  v a2  s.  c om*/

public class LogicExpression implements TriStateExpression {

  private TriStateExpression mLeft;
  private TriStateExpression mRight;
  private LogicOperator mOperator;
  private String mLocation;

  private LogicExpression(String location, TriStateExpression left,
      LogicOperator operator, TriStateExpression right) {
    this.mLocation = location;
    this.mLeft = left;
    this.mRight = right;
    this.mOperator = operator;
  }

  public LogicExpression(String location, TriStateExpression left,
      BinaryLogicOperator operator, TriStateExpression right) {
    this(location, left, (LogicOperator) operator, right);
  }

  public LogicExpression(String location, UnaryLogicOperator operator,
      TriStateExpression expression) {
    this(location, expression, operator, null);
  }

  @Override
  public void setInferredLocation(String location) {
    if (mLocation.equals(Expression.LOCATION_INFER)) {
      mLocation = location;
      return;
    }
    throw new RuntimeException(
        "Please don't use this method. For internal use only.");
  }

  public TriStateExpression getLeft() {
    return mLeft;
  }

  public TriStateExpression getRight() {
    return mRight;
  }

  public TriStateExpression getFirst(boolean leftFirst) {
    if (leftFirst) {
      return mLeft;
    } else {
      return mRight;
    }
  }

  public TriStateExpression getLast(boolean leftFirst) {
    if (leftFirst) {
      return mRight;
    } else {
      return mLeft;
    }
  }

  public LogicOperator getOperator() {
    return mOperator;
  }

  @Override
  public String toParseString() {
    if (mRight == null) {
      return mOperator.toString() + " " + mLeft.toParseString();
    } else {
      return "(" + mLeft.toParseString() + " " + mOperator + " "
          + mRight.toParseString() + ")";
    }
  }

  @Override
  public String getLocation() {
    return mLocation;
  }

}

Java Source Code List

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