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A Java Optimization Framework
package soot.baf.internal;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1999 Patrick Lam, Patrick Pominville and Raja Vallee-Rai
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.List;
import soot.Unit;
import soot.UnitPrinter;
import soot.baf.InstSwitch;
import soot.baf.TableSwitchInst;
import soot.util.Switch;
public class BTableSwitchInst extends AbstractSwitchInst implements TableSwitchInst {
int lowIndex;
int highIndex;
public BTableSwitchInst(Unit defaultTarget, int lowIndex, int highIndex, List extends Unit> targets) {
super(defaultTarget, targets);
this.lowIndex = lowIndex;
this.highIndex = highIndex;
}
@Override
public Object clone() {
return new BTableSwitchInst(getDefaultTarget(), lowIndex, highIndex, getTargets());
}
@Override
public void setLowIndex(int lowIndex) {
this.lowIndex = lowIndex;
}
@Override
public void setHighIndex(int highIndex) {
this.highIndex = highIndex;
}
@Override
public int getLowIndex() {
return lowIndex;
}
@Override
public int getHighIndex() {
return highIndex;
}
@Override
public String getName() {
return "tableswitch";
}
@Override
public String toString() {
final String endOfLine = " ";
StringBuilder buffer = new StringBuilder();
buffer.append("tableswitch").append(endOfLine);
buffer.append('{').append(endOfLine);
// In this for-loop, we cannot use "<=" since 'i' would wrap around.
// The case for "i == highIndex" is handled separately after the loop.
final int low = lowIndex;
final int high = highIndex;
for (int i = low; i < high; i++) {
buffer.append(" case ").append(i).append(": goto ").append(getTarget(i - low)).append(';').append(endOfLine);
}
buffer.append(" case ").append(high).append(": goto ").append(getTarget(high - low)).append(';').append(endOfLine);
buffer.append(" default: goto ").append(getDefaultTarget()).append(';').append(endOfLine);
buffer.append('}');
return buffer.toString();
}
@Override
public void toString(UnitPrinter up) {
up.literal("tableswitch");
up.newline();
up.literal("{");
up.newline();
// In this for-loop, we cannot use "<=" since 'i' would wrap around.
// The case for "i == highIndex" is handled separately after the loop.
for (int i = lowIndex; i < highIndex; i++) {
printCaseTarget(up, i);
}
printCaseTarget(up, highIndex);
up.literal(" default: goto ");
defaultTargetBox.toString(up);
up.literal(";");
up.newline();
up.literal("}");
}
private void printCaseTarget(UnitPrinter up, int targetIndex) {
up.literal(" case ");
up.literal(Integer.toString(targetIndex));
up.literal(": goto ");
targetBoxes[targetIndex - lowIndex].toString(up);
up.literal(";");
up.newline();
}
@Override
public void apply(Switch sw) {
((InstSwitch) sw).caseTableSwitchInst(this);
}
}