CompiledConstStringValue.java

/*
 * Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Nam Nguyen
 */
package com.caucho.quercus.env;

/**
 * Represents a StringValue that is never modified.
 * For compiled code.
 */
public final class CompiledConstStringValue
        extends ConstStringValue {

   private final int _compiledHashCode;

   public CompiledConstStringValue(StringValue s) {
      super(s);

      _longValue = s.toLongValue();
      _doubleValue = s.toDoubleValue();
      _string = s.toString();

      _valueType = s.getValueType();
      _compiledHashCode = s.hashCode();
      _key = s.toKey();
   }

   public CompiledConstStringValue(String s) {
      super(s);

      _longValue = super.toLongValue();
      _doubleValue = super.toDoubleValue();
      _string = s;
      _valueType = super.getValueType();
      _compiledHashCode = super.hashCode();
      _key = super.toKey();
   }

   public CompiledConstStringValue(char ch,
           LongValue longValue,
           DoubleValue doubleValue,
           ValueType valueType,
           Value key,
           int hashCode) {
      super(ch);

      _string = String.valueOf(ch);
      _longValue = longValue;
      _doubleValue = doubleValue;

      _valueType = valueType;
      _key = key;
      _compiledHashCode = hashCode;
   }

   public CompiledConstStringValue(char ch,
           LongValue longValue,
           DoubleValue doubleValue,
           ValueType valueType,
           int hashCode) {
      super(ch);

      _string = String.valueOf(ch);
      _longValue = longValue;
      _doubleValue = doubleValue;

      _valueType = valueType;
      _key = super.toKey();
      _compiledHashCode = hashCode;
   }

   public CompiledConstStringValue(String s,
           LongValue longValue,
           DoubleValue doubleValue,
           ValueType valueType,
           Value key,
           int hashCode) {
      super(s);

      _string = s;
      _longValue = longValue;
      _doubleValue = doubleValue;
      _valueType = valueType;

      _key = key;
      _compiledHashCode = hashCode;
   }

   public CompiledConstStringValue(String s,
           LongValue longValue,
           DoubleValue doubleValue,
           ValueType valueType,
           int hashCode) {
      super(s);

      _string = s;
      _longValue = longValue;
      _doubleValue = doubleValue;
      _valueType = valueType;

      _key = super.toKey();
      _compiledHashCode = hashCode;
   }

   @Override
   public boolean isStatic() {
      return true;
   }

   /**
    * Converts to a long vaule
    */
   @Override
   public LongValue toLongValue() {
      return _longValue;
   }

   /**
    * Converts to a double vaule
    */
   @Override
   public DoubleValue toDoubleValue() {
      return _doubleValue;
   }

   /**
    * Converts to a long.
    */
   @Override
   public long toLong() {
      return toLongValue().toLong();
   }

   /**
    * Converts to a double.
    */
   @Override
   public double toDouble() {
      return toDoubleValue().toDouble();
   }

   /**
    * Returns the ValueType.
    */
   @Override
   public ValueType getValueType() {
      return _valueType;
   }

   /**
    * Converts to a key.
    */
   @Override
   public final Value toKey() {
      return _key;
   }

   @Override
   public final int hashCode() {
      return _compiledHashCode;
   }

   @Override
   public final String toString() {
      return _string;
   }
}