com.codename1.tools.translator.bytecodes.SwitchInstruction Maven / Gradle / Ivy
/*
* Copyright (c) 2012, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.tools.translator.bytecodes;
import java.util.List;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
/**
*
* @author Shai Almog
*/
public class SwitchInstruction extends Instruction {
private Label dflt;
private int[] keys;
private Label[] labels;
public SwitchInstruction(Label dflt, int[] keys, Label[] labels) {
super(Opcodes.TABLESWITCH);
this.dflt = dflt;
this.keys = keys;
this.labels = labels;
for(int iter = 0 ; iter < keys.length ; iter++) {
LabelInstruction.labelIsUsed(labels[iter]);
}
LabelInstruction.labelIsUsed(dflt);
}
@Override
public void appendInstruction(StringBuilder b, List instructions) {
b.append(" SP--;\n switch((*SP).data.i) {\n");
for(int iter = 0 ; iter < keys.length ; iter++) {
b.append(" case ");
b.append(keys[iter]);
if(TryCatch.isTryCatchInMethod()) {
b.append(": JUMP_TO(label_");
b.append(labels[iter].toString());
b.append(", ");
b.append(LabelInstruction.getLabelCatchDepth(labels[iter], instructions));
b.append(");\n");
} else {
b.append(": goto label_");
b.append(labels[iter].toString());
b.append(";\n");
}
}
if(dflt != null) {
if(TryCatch.isTryCatchInMethod()) {
b.append(" default: JUMP_TO(label_");
b.append(dflt.toString());
b.append(", ");
b.append(LabelInstruction.getLabelCatchDepth(dflt, instructions));
b.append(");\n");
} else {
b.append(" default: goto label_");
b.append(dflt.toString());
b.append(";\n");
}
}
b.append(" }\n");
}
}