com.codename1.tools.translator.bytecodes.LocalVariable 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.Objects;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
/**
*
* @author Shai Almog
*/
public class LocalVariable extends Instruction {
private String name;
private String desc;
private int index;
public LocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
super(Opcodes.ALOAD);
this.name = name;
this.desc = desc;
this.index = index;
}
public int getIndex() {
return index;
}
public boolean isRightVariable(int index, char type) {
if(index == this.index) {
if(type == 'L') {
return desc.startsWith("L") || desc.startsWith("[");
}
return type == desc.charAt(0);
}
return false;
}
public void appendInstruction(StringBuilder b) {
b.append(" ");
if(desc.startsWith("[") || desc.startsWith("L")) {
b.append("JAVA_OBJECT o");
} else {
switch(desc.charAt(0)) {
case 'I':
b.append("JAVA_INT i");
break;
case 'J':
b.append("JAVA_LONG j");
break;
case 'B':
b.append("JAVA_BYTE b");
break;
case 'S':
b.append("JAVA_SHORT s");
break;
case 'F':
b.append("JAVA_FLOAT f");
break;
case 'D':
b.append("JAVA_DOUBLE d");
break;
case 'Z':
b.append("JAVA_BOOLEAN z");
break;
case 'C':
b.append("JAVA_CHAR c");
break;
}
}
if(name.equals("this")) {
b.append("this = __cn1ThisObject;\n");
} else {
b.append(name);
b.append("_");
b.append(index);
b.append(";\n");
}
}
public char getQualifier() {
switch (desc.charAt(0)) {
case 'B' :
case 'C' :
case 'Z' :
case 'I' :
case 'S' :
return 'i';
case 'J' :
return 'l';
case 'F' :
return 'f';
case 'D' :
return 'd';
case 'L' :
case '[' :
return 'o';
default :
throw new RuntimeException("Unknown local variable type "+desc);
}
}
public String getOrigName() {
return name;
}
public String getVarName() {
if(name.equals("this")) {
return "__cn1ThisObject";
}
StringBuilder b = new StringBuilder();
if(desc.startsWith("[") || desc.startsWith("L")) {
b.append("0");
} else {
switch(desc.charAt(0)) {
case 'I':
b.append("i");
break;
case 'J':
b.append("j");
break;
case 'B':
b.append("b");
break;
case 'S':
b.append("s");
break;
case 'F':
b.append("f");
break;
case 'D':
b.append("d");
break;
case 'Z':
b.append("z");
break;
case 'C':
b.append("c");
break;
}
}
b.append(name);
b.append("_");
b.append(index);
return b.toString();
}
@Override
public boolean equals(Object o) {
if (o == null) {
return false;
}
if (o.getClass() == LocalVariable.class) {
LocalVariable lv = (LocalVariable)o;
return lv.getIndex() == this.getIndex() && lv.getQualifier() == this.getQualifier();
}
return false;
}
@Override
public int hashCode() {
int hash = 3;
hash = 19 * hash + Objects.hashCode(this.desc);
hash = 19 * hash + this.index;
return hash;
}
}