/*
* 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.BytecodeMethod;
import org.objectweb.asm.Opcodes;
/**
*
* @author Shai Almog
*/
public class VarOp extends Instruction implements AssignableExpression {
private int var;
public VarOp(int opcode, int var) {
super(opcode);
this.var = var;
}
public int getIndex() {
return var;
}
@Override
public boolean assignTo(String varName, StringBuilder sb) {
StringBuilder b = new StringBuilder();
/*
if (typeVarName != null) {
switch (opcode) {
case Opcodes.ALOAD:
b.append("locals[");
b.append(var);
b.append("].type = CN1_TYPE_OBJECT; ");
break;
}
}*/
if (varName != null) {
b.append(" ");
b.append(varName).append(" = ");
}
switch(opcode) {
case Opcodes.ILOAD:
b.append("ilocals_");
b.append(var);
b.append("_");
break;
case Opcodes.LLOAD:
b.append("llocals_");
b.append(var);
b.append("_");
break;
case Opcodes.FLOAD:
b.append("flocals_");
b.append(var);
b.append("_");
break;
case Opcodes.DLOAD:
b.append("dlocals_");
b.append(var);
b.append("_");
break;
case Opcodes.ALOAD:
if (getMethod() != null && !getMethod().isStatic() && var == 0) {
b.append("__cn1ThisObject");
} else {
b.append("locals[");
b.append(var);
b.append("].data.o");
}
break;
default:
return false;
}
if (varName != null) {
b.append(";\n");
}
sb.append(b);
return true;
}
public boolean assignFrom(AssignableExpression ex, StringBuilder b) {
b.append(" /* VarOp.assignFrom */ ");
switch (opcode) {
case Opcodes.ISTORE:
return ex.assignTo("ilocals_"+var+"_", b);
case Opcodes.LSTORE:
return ex.assignTo("llocals_"+var+"_", b);
case Opcodes.FSTORE:
return ex.assignTo("flocals_"+var+"_", b);
case Opcodes.DSTORE:
return ex.assignTo("dlocals_"+var+"_", b);
case Opcodes.ASTORE: {
StringBuilder sb = new StringBuilder();
sb.append("locals[").append(var).append("].type=CN1_TYPE_INVALID;");
boolean res = ex.assignTo("locals["+var+"].data.o", sb);
if (!res) {
return false;
}
sb.append("locals[").append(var).append("].type=CN1_TYPE_OBJECT;");
b.append(sb);
return true;
}
}
b.append("\n");
return false;
}
public boolean assignFrom(CustomInvoke ex, StringBuilder b) {
b.append(" /* VarOp.assignFrom */ ");
StringBuilder sb = new StringBuilder();
switch (opcode) {
case Opcodes.ISTORE:
if (ex.appendExpression(sb)) {
b.append("ilocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
return true;
}
break;
case Opcodes.LSTORE:
if (ex.appendExpression(sb)) {
b.append("llocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
return true;
}
break;
case Opcodes.FSTORE:
if (ex.appendExpression(sb)) {
b.append("flocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
return true;
}
break;
case Opcodes.DSTORE:
if (ex.appendExpression(sb)) {
b.append("dlocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
return true;
}
break;
case Opcodes.ASTORE: {
StringBuilder sb2 = new StringBuilder();
//sb2.append("locals[").append(var).append("].type=CN1_TYPE_INVALID; ");
if (ex.appendExpression(sb)) {
sb2.append("locals[").append(var).append("].data.o = ").append(sb.toString().trim()).append(";");
sb2.append("locals[").append(var).append("].type=CN1_TYPE_OBJECT;");
b.append(sb2);
return true;
}
break;
}
}
//b.append("\n");
return false;
}
@Override
public void appendInstruction(StringBuilder b) {
b.append(" ");
switch(opcode) {
case Opcodes.ILOAD:
b.append("(*SP).type = CN1_TYPE_INT; /* ILOAD */ \n" +
" (*SP).data.i = ilocals_");
b.append(var);
b.append("_; \n SP++;\n");
return;
case Opcodes.LLOAD:
b.append("BC_LLOAD(");
break;
case Opcodes.FLOAD:
b.append("BC_FLOAD(");
break;
case Opcodes.DLOAD:
b.append("BC_DLOAD(");
break;
case Opcodes.ALOAD:
b.append("BC_ALOAD(");
break;
case Opcodes.ISTORE:
b.append("BC_ISTORE(");
break;
case Opcodes.LSTORE:
b.append("BC_LSTORE(");
break;
case Opcodes.FSTORE:
b.append("BC_FSTORE(");
break;
case Opcodes.DSTORE:
b.append("BC_DSTORE(");
break;
case Opcodes.ASTORE:
b.append("BC_ASTORE(");
break;
case Opcodes.RET:
b.append("/* RET TODO */");
//b.append("goto label_");
//b.append(var);
//b.append("; /* RET */\n");
return;
case Opcodes.SIPUSH:
case Opcodes.BIPUSH:
b.append("PUSH_INT(");
break;
case Opcodes.NEWARRAY:
switch(var) {
case 4: // boolean
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_BOOLEAN, sizeof(JAVA_ARRAY_BOOLEAN), 1));\n");
break;
case 5: // char
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_CHAR, sizeof(JAVA_ARRAY_CHAR), 1));\n");
break;
case 6: // float
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_FLOAT, sizeof(JAVA_ARRAY_FLOAT), 1));\n");
break;
case 7: // double
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_DOUBLE, sizeof(JAVA_ARRAY_DOUBLE), 1));\n");
break;
case 8: // byte
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_BYTE, sizeof(JAVA_ARRAY_BYTE), 1));\n");
break;
case 9: // short
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_SHORT, sizeof(JAVA_ARRAY_SHORT), 1));\n");
break;
case 10: // int
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_INT, sizeof(JAVA_ARRAY_INT), 1));\n");
break;
case 11: // long
b.append("PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_LONG, sizeof(JAVA_ARRAY_LONG), 1));\n");
break;
}
return;
default:
throw new RuntimeException("Missing opcode: " + opcode);
}
b.append(var);
b.append(");\n");
}
}