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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.classfile.constant;
import proguard.classfile.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.visitor.*;
/**
* This Constant represents a string constant in the constant pool.
*
* @author Eric Lafortune
*/
public class StringConstant extends Constant
{
public int u2stringIndex;
/**
* An extra field pointing to the referenced Clazz object, if this
* string is being used in Class.forName(), .class, or
* Class.getDeclaredField/Method constructs.
* This field is typically filled out by the <code>{@link
* proguard.classfile.util.DynamicClassReferenceInitializer
* DynamicClassReferenceInitializer}</code> or by the <code>{@link
* proguard.classfile.util.DynamicMemberReferenceInitializer
* DynamicMemberReferenceInitializer}</code>.
*/
public Clazz referencedClass;
/**
* An extra field pointing to the referenced Member object, if this
* string is being used in Class.getDeclaredField/Method constructs.
* This field is typically filled out by the <code>{@link
* proguard.classfile.util.DynamicMemberReferenceInitializer
* DynamicMemberReferenceInitializer}</code>.
*/
public Member referencedMember;
/**
* An extra field pointing to the java.lang.String Clazz object.
* This field is typically filled out by the <code>{@link
* proguard.classfile.util.ClassReferenceInitializer
* ClassReferenceInitializer}</code>..
*/
public Clazz javaLangStringClass;
/**
* Creates an uninitialized StringConstant.
*/
public StringConstant()
{
}
/**
* Creates a new StringConstant with the given string index.
* @param u2stringIndex the index of the string in the constant pool.
* @param referencedClass the referenced class, if any.
* @param referenceMember the referenced class member, if any.
*/
public StringConstant(int u2stringIndex,
Clazz referencedClass,
Member referenceMember)
{
this.u2stringIndex = u2stringIndex;
this.referencedClass = referencedClass;
this.referencedMember = referenceMember;
}
/**
* Returns the string value.
*/
public String getString(Clazz clazz)
{
return clazz.getString(u2stringIndex);
}
// Implementations for Constant.
public int getTag()
{
return ClassConstants.CONSTANT_String;
}
public void accept(Clazz clazz, ConstantVisitor constantVisitor)
{
constantVisitor.visitStringConstant(clazz, this);
}
/**
* Lets the referenced class accept the given visitor.
*/
public void referencedClassAccept(ClassVisitor classVisitor)
{
if (referencedClass != null &&
referencedMember == null)
{
referencedClass.accept(classVisitor);
}
}
/**
* Lets the referenced member accept the given visitor.
*/
public void referencedMemberAccept(MemberVisitor memberVisitor)
{
if (referencedMember != null)
{
referencedMember.accept(referencedClass, memberVisitor);
}
}
}
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