| /* |
| * 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; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.constant.*; |
| import proguard.classfile.constant.visitor.ConstantVisitor; |
| import proguard.classfile.util.SimplifiedVisitor; |
| import proguard.evaluation.value.*; |
| |
| /** |
| * This class creates Value instance that correspond to specified constant pool |
| * entries. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ConstantValueFactory |
| extends SimplifiedVisitor |
| implements ConstantVisitor |
| { |
| protected final ValueFactory valueFactory; |
| |
| // Field acting as a parameter for the ConstantVisitor methods. |
| protected Value value; |
| |
| |
| public ConstantValueFactory(ValueFactory valueFactory) |
| { |
| this.valueFactory = valueFactory; |
| } |
| |
| |
| /** |
| * Returns the Value of the constant pool element at the given index. |
| */ |
| public Value constantValue(Clazz clazz, |
| int constantIndex) |
| { |
| // Visit the constant pool entry to get its return value. |
| clazz.constantPoolEntryAccept(constantIndex, this); |
| |
| return value; |
| } |
| |
| |
| // Implementations for ConstantVisitor. |
| |
| public void visitIntegerConstant(Clazz clazz, IntegerConstant integerConstant) |
| { |
| value = valueFactory.createIntegerValue(integerConstant.getValue()); |
| } |
| |
| public void visitLongConstant(Clazz clazz, LongConstant longConstant) |
| { |
| value = valueFactory.createLongValue(longConstant.getValue()); |
| } |
| |
| public void visitFloatConstant(Clazz clazz, FloatConstant floatConstant) |
| { |
| value = valueFactory.createFloatValue(floatConstant.getValue()); |
| } |
| |
| public void visitDoubleConstant(Clazz clazz, DoubleConstant doubleConstant) |
| { |
| value = valueFactory.createDoubleValue(doubleConstant.getValue()); |
| } |
| |
| public void visitStringConstant(Clazz clazz, StringConstant stringConstant) |
| { |
| value = valueFactory.createReferenceValue(ClassConstants.NAME_JAVA_LANG_STRING, |
| stringConstant.javaLangStringClass, |
| false); |
| } |
| |
| public void visitMethodHandleConstant(Clazz clazz, MethodHandleConstant methodHandleConstant) |
| { |
| value = valueFactory.createReferenceValue(ClassConstants.NAME_JAVA_LANG_INVOKE_METHOD_HANDLE, |
| methodHandleConstant.javaLangInvokeMethodHandleClass, |
| false); |
| } |
| |
| public void visitClassConstant(Clazz clazz, ClassConstant classConstant) |
| { |
| value = valueFactory.createReferenceValue(classConstant.getName(clazz), |
| classConstant.referencedClass, |
| false); |
| } |
| |
| public void visitMethodTypeConstant(Clazz clazz, MethodTypeConstant methodTypeConstant) |
| { |
| value = valueFactory.createReferenceValue(ClassConstants.NAME_JAVA_LANG_INVOKE_METHOD_TYPE, |
| methodTypeConstant.javaLangInvokeMethodTypeClass, |
| false); |
| } |
| } |