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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.instruction.visitor;
import proguard.classfile.*;
import proguard.classfile.attribute.CodeAttribute;
import proguard.classfile.instruction.*;
/**
* This InstructionVisitor delegates all visits to each InstructionVisitor
* in a given list.
*
* @author Eric Lafortune
*/
public class MultiInstructionVisitor implements InstructionVisitor
{
private static final int ARRAY_SIZE_INCREMENT = 5;
private InstructionVisitor[] instructionVisitors;
private int instructionVisitorCount;
public MultiInstructionVisitor()
{
}
public MultiInstructionVisitor(InstructionVisitor[] instructionVisitors)
{
this.instructionVisitors = instructionVisitors;
this.instructionVisitorCount = instructionVisitors.length;
}
public void addInstructionVisitor(InstructionVisitor instructionVisitor)
{
ensureArraySize();
instructionVisitors[instructionVisitorCount++] = instructionVisitor;
}
private void ensureArraySize()
{
if (instructionVisitors == null)
{
instructionVisitors = new InstructionVisitor[ARRAY_SIZE_INCREMENT];
}
else if (instructionVisitors.length == instructionVisitorCount)
{
InstructionVisitor[] newInstructionVisitors =
new InstructionVisitor[instructionVisitorCount +
ARRAY_SIZE_INCREMENT];
System.arraycopy(instructionVisitors, 0,
newInstructionVisitors, 0,
instructionVisitorCount);
instructionVisitors = newInstructionVisitors;
}
}
// Implementations for InstructionVisitor.
public void visitSimpleInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, SimpleInstruction simpleInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitSimpleInstruction(clazz, method, codeAttribute, offset, simpleInstruction);
}
}
public void visitVariableInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VariableInstruction variableInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitVariableInstruction(clazz, method, codeAttribute, offset, variableInstruction);
}
}
public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitConstantInstruction(clazz, method, codeAttribute, offset, constantInstruction);
}
}
public void visitBranchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, BranchInstruction branchInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitBranchInstruction(clazz, method, codeAttribute, offset, branchInstruction);
}
}
public void visitTableSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, TableSwitchInstruction tableSwitchInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitTableSwitchInstruction(clazz, method, codeAttribute, offset, tableSwitchInstruction);
}
}
public void visitLookUpSwitchInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, LookUpSwitchInstruction lookUpSwitchInstruction)
{
for (int index = 0; index < instructionVisitorCount; index++)
{
instructionVisitors[index].visitLookUpSwitchInstruction(clazz, method, codeAttribute, offset, lookUpSwitchInstruction);
}
}
}
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