/*
* 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 com.codename1.tools.translator.ByteCodeClass;
import com.codename1.tools.translator.Parser;
import java.util.List;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
/**
*
* @author Shai Almog
*/
public class Ldc extends Instruction implements AssignableExpression {
private Object cst;
public Ldc(Object o) {
super(Opcodes.LDC);
cst = o;
}
public void addToConstantPool() {
if (cst instanceof String) {
Parser.addToConstantPool((String)cst);
}
}
public Object getValue() {
return cst;
}
@Override
public void addDependencies(List<String> dependencyList) {
if (cst instanceof Type) {
int sort = ((Type) cst).getSort();
Type tp = (Type) cst;
if (sort == Type.OBJECT) {
String t = tp.getInternalName().replace('/', '_').replace('$', '_');
if(!dependencyList.contains(t)) {
dependencyList.add(t);
}
} else if (sort == Type.ARRAY) {
try {
Type ttt = tp.getElementType();
switch(ttt.getSort()) {
case Type.BOOLEAN:
case Type.BYTE:
case Type.CHAR:
case Type.DOUBLE:
case Type.FLOAT:
case Type.INT:
case Type.LONG:
case Type.SHORT:
return;
}
String t = ttt.getInternalName().replace('/', '_').replace('$', '_');
ByteCodeClass.addArrayType(t, tp.getDimensions());
if(!dependencyList.contains(t)) {
dependencyList.add(t);
}
} catch(Throwable t) {
System.out.println("Non-fatal error when reading type: " + tp);
t.printStackTrace();
}
}
}
}
@Override
public boolean isConstant() {
return true;
}
public String getValueAsString() {
StringBuilder b = new StringBuilder();
if (cst instanceof Integer) {
//b.append("PUSH_INT(");
b.append(((Number)cst).intValue());
//b.append("); /* LDC */\n");
} else if (cst instanceof Float) {
Float f = (Float)cst;
//b.append("PUSH_FLOAT(");
if(f.isInfinite()) {
if(f.floatValue() > 0) {
b.append("1.0f / 0.0f");
} else {
b.append("-1.0f / 0.0f");
}
} else {
if(f.isNaN()) {
b.append("0.0/0.0");
} else {
b.append(f.floatValue());
}
}
//b.append("); /* LDC */\n");
} else if (cst instanceof Long) {
//b.append("PUSH_LONG(");
if(((Number)cst).longValue() == Long.MIN_VALUE) {
// min value in C is 1 less (more really)
b.append(((Number)cst).longValue() + 1);
} else {
b.append(((Number)cst).longValue());
}
//b.append("LL); /* LDC */\n");
} else if (cst instanceof Double) {
Double d = (Double)cst;
//b.append("PUSH_DOUBLE(");
if(d.isInfinite()) {
if(d.floatValue() > 0) {
b.append("1.0 / 0.0");
} else {
b.append("-1.0 / 0.0");
}
} else {
if(d.isNaN()) {
b.append("0.0/0.0");
} else {
b.append(d.doubleValue());
}
}
//b.append("); /* LDC */\n");
} else if (cst instanceof String) {
//b.append("/* LDC: '");
//b.append(((String)cst).replace('\n', ' ').replace("*/", "*\\/"));
//b.append("'*/\n PUSH_POINTER(STRING_FROM_CONSTANT_POOL_OFFSET(");
b.append("STRING_FROM_CONSTANT_POOL_OFFSET(");
b.append(Parser.addToConstantPool((String)cst));
b.append(")");
//b.append("));\n");
} else if (cst instanceof Type) {
// TODO...
int sort = ((Type) cst).getSort();
Type tp = (Type) cst;
if (sort == Type.OBJECT) {
//b.append("/* LDC: '");
//b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
//b.append("'*/\n PUSH_POINTER((JAVA_OBJECT)&class__");
//b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
//b.append(");\n");
b.append("(JAVA_OBJECT)&class__");
b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
} else if (sort == Type.ARRAY) {
//b.append("/* LDC Array: '");
//b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
//b.append("'*/\n PUSH_POINTER((JAVA_OBJECT)&class_array");
b.append("(JAVA_OBJECT)&class_array");
b.append(tp.getDimensions());
b.append("__");
Type ttt = tp.getElementType();
switch(ttt.getSort()) {
case Type.BOOLEAN:
b.append("JAVA_BOOLEAN");
break;
case Type.BYTE:
b.append("JAVA_BYTE");
break;
case Type.CHAR:
b.append("JAVA_CHAR");
break;
case Type.DOUBLE:
b.append("JAVA_DOUBLE");
break;
case Type.FLOAT:
b.append("JAVA_FLOAT");
break;
case Type.INT:
b.append("JAVA_INT");
break;
case Type.LONG:
b.append("JAVA_LONG");
break;
case Type.SHORT:
b.append("JAVA_SHORT");
break;
default:
b.append(ttt.getInternalName().replace('/', '_').replace('$', '_'));
break;
}
//b.append(");\n");
} else if (sort == Type.METHOD) {
b.append("/* UNKNOWN CST type internal: ");
b.append(tp.getInternalName());
b.append(" */");
} else {
b.append("/* UNKNOWN CST type internal: ");
b.append(tp.getInternalName());
b.append(" */");
}
} else if (cst instanceof Handle) {
//((Handle)cst).
b.append("/* UNKNOWN CST type: ");
b.append(cst.getClass().getName());
b.append(" */");
}
return b.toString();
}
@Override
public void appendInstruction(StringBuilder b) {
b.append(" ");
if (cst instanceof Integer) {
b.append("PUSH_INT(");
b.append(((Number)cst).intValue());
b.append("); /* LDC */\n");
} else if (cst instanceof Float) {
Float f = (Float)cst;
b.append("PUSH_FLOAT(");
if(f.isInfinite()) {
if(f.floatValue() > 0) {
b.append("1.0f / 0.0f");
} else {
b.append("-1.0f / 0.0f");
}
} else {
if(f.isNaN()) {
b.append("0.0/0.0");
} else {
b.append(f.floatValue());
}
}
b.append("); /* LDC */\n");
} else if (cst instanceof Long) {
b.append("PUSH_LONG(");
if(((Number)cst).longValue() == Long.MIN_VALUE) {
// min value in C is 1 less (more really)
b.append(((Number)cst).longValue() + 1);
} else {
b.append(((Number)cst).longValue());
}
b.append("LL); /* LDC */\n");
} else if (cst instanceof Double) {
Double d = (Double)cst;
b.append("PUSH_DOUBLE(");
if(d.isInfinite()) {
if(d.floatValue() > 0) {
b.append("1.0 / 0.0");
} else {
b.append("-1.0 / 0.0");
}
} else {
if(d.isNaN()) {
b.append("0.0/0.0");
} else {
b.append(d.doubleValue());
}
}
b.append("); /* LDC */\n");
} else if (cst instanceof String) {
b.append("/* LDC: '");
b.append(((String)cst).replace('\n', ' ').replace("*/", "*\\/"));
b.append("'*/\n PUSH_POINTER(STRING_FROM_CONSTANT_POOL_OFFSET(");
b.append(Parser.addToConstantPool((String)cst));
b.append("));\n");
} else if (cst instanceof Type) {
// TODO...
int sort = ((Type) cst).getSort();
Type tp = (Type) cst;
if (sort == Type.OBJECT) {
b.append("/* LDC: '");
b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
b.append("'*/\n PUSH_POINTER((JAVA_OBJECT)&class__");
b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
b.append(");\n");
} else if (sort == Type.ARRAY) {
b.append("/* LDC Array: '");
b.append(tp.getInternalName().replace('/', '_').replace('$', '_'));
b.append("'*/\n PUSH_POINTER((JAVA_OBJECT)&class_array");
b.append(tp.getDimensions());
b.append("__");
Type ttt = tp.getElementType();
switch(ttt.getSort()) {
case Type.BOOLEAN:
b.append("JAVA_BOOLEAN");
break;
case Type.BYTE:
b.append("JAVA_BYTE");
break;
case Type.CHAR:
b.append("JAVA_CHAR");
break;
case Type.DOUBLE:
b.append("JAVA_DOUBLE");
break;
case Type.FLOAT:
b.append("JAVA_FLOAT");
break;
case Type.INT:
b.append("JAVA_INT");
break;
case Type.LONG:
b.append("JAVA_LONG");
break;
case Type.SHORT:
b.append("JAVA_SHORT");
break;
default:
b.append(ttt.getInternalName().replace('/', '_').replace('$', '_'));
break;
}
b.append(");\n");
} else if (sort == Type.METHOD) {
b.append("/* UNKNOWN CST type internal: ");
b.append(tp.getInternalName());
b.append(" */");
} else {
b.append("/* UNKNOWN CST type internal: ");
b.append(tp.getInternalName());
b.append(" */");
}
} else if (cst instanceof Handle) {
//((Handle)cst).
b.append("/* UNKNOWN CST type: ");
b.append(cst.getClass().getName());
b.append(" */");
}
}
@Override
public boolean assignTo(String varName, StringBuilder sb) {
if (varName != null) {
sb.append(" ");
sb.append(varName).append(" = ");
}
sb.append(getValueAsString());
if (varName != null) {
sb.append(";\n");
}
return true;
}
}