/*
* Copyright (c) 1998-2011 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 Scott Ferguson
*/
package com.caucho.quercus.env;
import com.caucho.vfs.WriteStream;
import com.caucho.quercus.marshal.Marshal;
import java.util.IdentityHashMap;
import java.io.IOException;
/**
* Represents a 16-bit unicode string value.
*/
abstract public class UnicodeValue extends StringValue {
protected UnicodeValue()
{
}
@Override
public String toDebugString()
{
StringBuilder sb = new StringBuilder();
int length = length();
sb.append("unicode(");
sb.append(length);
sb.append(") \"");
int appendLength = length > 256 ? 256 : length;
for (int i = 0; i < appendLength; i++)
sb.append(charAt(i));
if (length > 256)
sb.append(" ...");
sb.append('"');
return sb.toString();
}
@Override
public void varDumpImpl(Env env,
WriteStream out,
int depth,
IdentityHashMap<Value, String> valueSet)
throws IOException
{
int length = length();
if (length < 0)
length = 0;
out.print("unicode(");
out.print(length);
out.print(") \"");
for (int i = 0; i < length; i++)
out.print(charAt(i));
out.print("\"");
}
/**
* Convert to a unicode value.
*/
@Override
public StringValue toUnicodeValue()
{
return this;
}
/**
* Convert to a unicode value.
*/
@Override
public StringValue toUnicodeValue(Env env)
{
return this;
}
/**
* Decodes from charset and returns UnicodeValue.
*
* @param env
* @param charset
*/
@Override
public StringValue toUnicodeValue(Env env, String charset)
{
return this;
}
/**
* Converts to a string builder
*/
@Override
public StringValue toStringBuilder()
{
UnicodeBuilderValue sb = new UnicodeBuilderValue();
sb.append(this);
return sb;
}
/**
* Returns true for UnicodeValue
*/
@Override
public boolean isUnicode()
{
return true;
}
/**
* Cost to convert to a UnicodeValue
*/
public int toUnicodeValueMarshalCost()
{
return Marshal.COST_IDENTICAL;
}
/**
* Returns true for equality
*/
/*
@Override
public boolean eq(Value rValue)
{
rValue = rValue.toValue();
if (rValue.isBoolean()) {
return toBoolean() == rValue.toBoolean();
}
int type = getNumericType();
if (type == IS_STRING) {
if (rValue.isUnicode())
return equals(rValue);
else if (rValue.isBinary())
return equals(rValue.toUnicodeValue(Env.getInstance()));
else if (rValue.isLongConvertible())
return toLong() == rValue.toLong();
else
return equals(rValue.toStringValue());
}
else if (rValue.isString() && rValue.length() == 0)
return length() == 0;
else if (rValue.isNumberConvertible())
return toDouble() == rValue.toDouble();
else
return equals(rValue.toStringValue());
}
*/
}