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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program 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.
*
* This program 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. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.evaluation.value;
import proguard.classfile.ClassConstants;
/**
* This value factory creates initial values for fields and array elements,
* with the help of a given value factory. Note that this class itself doesn't
* implement ValueFactory.
*
* @author Eric Lafortune
*/
public class InitialValueFactory
{
private final ValueFactory valueFactory;
/**
* Creates a new InitialValueFactory.
* @param valueFactory the value factory that will actually create the
* values.
*/
public InitialValueFactory(ValueFactory valueFactory)
{
this.valueFactory = valueFactory;
}
/**
* Creates an initial value (0, 0L, 0.0f, 0.0, null) of the given type.
*/
public Value createValue(String type)
{
switch (type.charAt(0))
{
case ClassConstants.TYPE_BOOLEAN:
case ClassConstants.TYPE_BYTE:
case ClassConstants.TYPE_CHAR:
case ClassConstants.TYPE_SHORT:
case ClassConstants.TYPE_INT:
return valueFactory.createIntegerValue(0);
case ClassConstants.TYPE_LONG:
return valueFactory.createLongValue(0L);
case ClassConstants.TYPE_FLOAT:
return valueFactory.createFloatValue(0.0f);
case ClassConstants.TYPE_DOUBLE:
return valueFactory.createDoubleValue(0.0);
case ClassConstants.TYPE_CLASS_START:
case ClassConstants.TYPE_ARRAY:
return valueFactory.createReferenceValueNull();
default:
throw new IllegalArgumentException("Invalid type ["+type+"]");
}
}
}
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