/*
* Copyright (C) 2010-2016 JPEXS, All rights reserved.
*
* This library 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 3.0 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library.
*/
package com.jpexs.decompiler.flash.abc.avm2.model;
import com.jpexs.decompiler.flash.IdentifiersDeobfuscation;
import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.abc.avm2.AVM2Code;
import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instruction;
import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instructions;
import com.jpexs.decompiler.flash.abc.avm2.instructions.InstructionDefinition;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.AVM2SourceGenerator;
import com.jpexs.decompiler.flash.configuration.Configuration;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.model.LocalData;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
*
* @author JPEXS
*/
public abstract class AVM2Item extends GraphTargetItem {
private AVM2Instruction instruction;
private AVM2Instruction lineStartIns;
public AVM2Item(GraphSourceItem instruction, GraphSourceItem lineStartIns, int precedence) {
this(instruction, lineStartIns, precedence, null);
}
public AVM2Item(GraphSourceItem instruction, GraphSourceItem lineStartIns, int precedence, GraphTargetItem value) {
super(instruction, lineStartIns, precedence, value);
if (instruction instanceof AVM2Instruction) {
this.instruction = (AVM2Instruction) instruction;
}
if (lineStartIns instanceof AVM2Instruction) {
this.lineStartIns = (AVM2Instruction) lineStartIns;
}
}
public AVM2Instruction getInstruction() {
return instruction;
}
public AVM2Instruction getLineStartIns() {
return lineStartIns;
}
@Override
public boolean needsSemicolon() {
return true;
}
protected GraphTextWriter formatProperty(GraphTextWriter writer, GraphTargetItem object, GraphTargetItem propertyName, LocalData localData) throws InterruptedException {
boolean empty = object instanceof FindPropertyAVM2Item;
if (object instanceof LocalRegAVM2Item) {
if (((LocalRegAVM2Item) object).computedValue != null) {
if (((LocalRegAVM2Item) object).computedValue.getThroughNotCompilable() instanceof FindPropertyAVM2Item) {
empty = true;
}
}
}
if (object instanceof FindPropertyAVM2Item) {
FindPropertyAVM2Item fp = (FindPropertyAVM2Item) object;
if (fp.propertyName instanceof FullMultinameAVM2Item) {
propertyName = fp.propertyName;
}
}
if (!empty && object != null) {
if (object.getPrecedence() > PRECEDENCE_PRIMARY) {
writer.append("(");
object.toString(writer, localData);
writer.append(")");
empty = false;
} else {
int writerLength = writer.getLength();
object.toString(writer, localData);
if (writerLength == writer.getLength()) {
empty = true;
}
}
}
if (empty) {
return propertyName.toString(writer, localData);
}
if (propertyName instanceof FullMultinameAVM2Item) {
if (((FullMultinameAVM2Item) propertyName).name != null) {
if (((FullMultinameAVM2Item) propertyName).namespace != null) {
writer.append(".");
}
return propertyName.toString(writer, localData);
} else {
writer.append(".");
return propertyName.toString(writer, localData);
}
} else {
writer.append("[");
propertyName.toString(writer, localData);
return writer.append("]");
}
}
public static String localRegName(HashMap<Integer, String> localRegNames, int reg) {
if (localRegNames.containsKey(reg)) {
return IdentifiersDeobfuscation.printIdentifier(true, localRegNames.get(reg));
} else {
if (reg == 0) {
return "this";
}
return String.format(Configuration.registerNameFormat.get(), reg);
}
}
/*@Override
public boolean hasReturnValue() {
return false;
}*/
@Override
public List<GraphSourceItem> toSourceIgnoreReturnValue(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
if (!hasReturnValue()) {
return toSource(localData, generator);
}
List<GraphSourceItem> ret = toSource(localData, generator);
ret.add(new AVM2Instruction(0, AVM2Instructions.Pop, null));
return ret;
}
public static AVM2Instruction ins(int instructionCode, Integer... operands) {
InstructionDefinition def = AVM2Code.instructionSet[instructionCode];
List<Integer> ops = new ArrayList<>();
for (Integer o : operands) {
if (o != null) {
ops.add(o);
}
}
int[] opArr = new int[ops.size()];
for (int i = 0; i < ops.size(); i++) {
opArr[i] = ops.get(i);
}
return new AVM2Instruction(0, def, opArr);
}
public static int getFreeRegister(SourceGeneratorLocalData localData, SourceGenerator generator) {
AVM2SourceGenerator g = (AVM2SourceGenerator) generator;
return g.getFreeRegister(localData);
}
public static void killRegister(SourceGeneratorLocalData localData, SourceGenerator generator, int regNumber) {
AVM2SourceGenerator g = (AVM2SourceGenerator) generator;
g.killRegister(localData, regNumber);
}
}