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https://git.huckle.dev/Huckles-Minecraft-Archive/jpexs-decompiler.git
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283 lines
10 KiB
Java
283 lines
10 KiB
Java
/*
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* Copyright (C) 2010-2014 JPEXS
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.jpexs.decompiler.flash.action.swf7;
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import com.jpexs.decompiler.flash.SWFInputStream;
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import com.jpexs.decompiler.flash.SWFOutputStream;
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import com.jpexs.decompiler.flash.action.Action;
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import com.jpexs.decompiler.flash.action.ActionList;
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import com.jpexs.decompiler.flash.action.model.ActionItem;
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import com.jpexs.decompiler.flash.action.model.DirectValueActionItem;
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import com.jpexs.decompiler.flash.action.model.clauses.TryActionItem;
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import com.jpexs.decompiler.flash.action.parser.ParseException;
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import com.jpexs.decompiler.flash.action.parser.pcode.ASMParsedSymbol;
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import com.jpexs.decompiler.flash.action.parser.pcode.FlasmLexer;
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import com.jpexs.decompiler.flash.action.swf4.RegisterNumber;
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import com.jpexs.decompiler.flash.exporters.modes.ScriptExportMode;
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import com.jpexs.decompiler.graph.GraphSourceItemContainer;
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import com.jpexs.decompiler.graph.GraphTargetItem;
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import com.jpexs.decompiler.graph.TranslateStack;
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import com.jpexs.helpers.Helper;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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public class ActionTry extends Action implements GraphSourceItemContainer {
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public int reserved;
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public boolean catchInRegisterFlag;
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public boolean finallyBlockFlag;
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public boolean catchBlockFlag;
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public String catchName;
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public int catchRegister;
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long trySize;
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long catchSize;
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long finallySize;
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private final int version;
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public ActionTry(boolean catchInRegisterFlag, boolean finallyBlockFlag, boolean catchBlockFlag, String catchName, int catchRegister, long trySize, long catchSize, long finallySize, int version) {
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super(0x8F, 0);
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this.catchInRegisterFlag = catchInRegisterFlag;
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this.finallyBlockFlag = finallyBlockFlag;
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this.catchBlockFlag = catchBlockFlag;
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this.catchName = catchName;
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this.catchRegister = catchRegister;
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this.trySize = trySize;
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this.catchSize = catchSize;
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this.finallySize = finallySize;
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this.version = version;
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}
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public ActionTry(int actionLength, SWFInputStream sis, int version) throws IOException {
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super(0x8F, actionLength);
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long startPos = sis.getPos();
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this.version = version;
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reserved = (int) sis.readUB(5, "reserved");
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catchInRegisterFlag = sis.readUB(1, "catchInRegisterFlag") == 1;
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finallyBlockFlag = sis.readUB(1, "finallyBlockFlag") == 1;
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catchBlockFlag = sis.readUB(1, "catchBlockFlag") == 1;
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trySize = sis.readUI16("trySize");
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catchSize = sis.readUI16("catchSize");
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finallySize = sis.readUI16("finallySize");
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if (catchInRegisterFlag) {
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catchRegister = sis.readUI8("catchRegister");
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} else {
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catchName = sis.readString("catchName");
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}
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}
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@Override
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public byte[] getBytes(int version) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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SWFOutputStream sos = new SWFOutputStream(baos, version);
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try {
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sos.writeUB(5, reserved);
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sos.writeUB(1, catchInRegisterFlag ? 1 : 0);
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sos.writeUB(1, finallyBlockFlag ? 1 : 0);
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sos.writeUB(1, catchBlockFlag ? 1 : 0);
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sos.writeUI16((int) trySize);
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sos.writeUI16((int) catchSize);
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sos.writeUI16((int) finallySize);
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if (catchInRegisterFlag) {
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sos.writeUI8(catchRegister);
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} else {
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sos.writeString(catchName == null ? "" : catchName);
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}
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sos.close();
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} catch (IOException e) {
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}
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return surroundWithAction(baos.toByteArray(), version);
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}
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public ActionTry(FlasmLexer lexer, int version) throws IOException, ParseException {
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super(0x8F, 0);
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this.version = version;
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ASMParsedSymbol symb = lexer.yylex();
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if (symb.type == ASMParsedSymbol.TYPE_STRING) {
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catchInRegisterFlag = false;
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catchName = (String) symb.value;
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} else if (symb.type == ASMParsedSymbol.TYPE_REGISTER) {
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catchRegister = ((RegisterNumber) symb.value).number;
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catchInRegisterFlag = true;
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} else if (symb.type == ASMParsedSymbol.TYPE_BLOCK_START) {
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return;
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} else {
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throw new ParseException("Unknown symbol after Try", lexer.yyline());
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}
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lexBlockOpen(lexer);
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}
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@Override
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public String getASMSourceBetween(int pos) {
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String ret = "";
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if (pos == 0) {
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if (catchBlockFlag) {
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ret += "Catch";
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ret += " {\r\n";
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return ret;
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}
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if (finallyBlockFlag) {
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ret += "Finally {\r\n";
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return ret;
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}
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}
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if (pos == 1) {
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if (catchBlockFlag && finallyBlockFlag) {
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ret += "Finally {\r\n";
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return ret;
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}
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}
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return ret;
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}
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@Override
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public String getASMSource(ActionList container, List<Long> knownAddreses, ScriptExportMode exportMode) {
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StringBuilder ret = new StringBuilder();
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ret.append("Try ");
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if (catchBlockFlag) {
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if (catchInRegisterFlag) {
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ret.append("register").append(catchRegister);
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} else {
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ret.append("\"").append(Helper.escapeString(catchName)).append("\"");
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}
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ret.append(" ");
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}
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ret.append("{");
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return ret.toString();
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}
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@Override
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public long getHeaderSize() {
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return getBytes(version).length;
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}
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public long getTrySize() {
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return trySize;
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}
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@Override
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public List<Long> getContainerSizes() {
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List<Long> ret = new ArrayList<>();
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ret.add(trySize);
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ret.add(catchSize);
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ret.add(finallySize);
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return ret;
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}
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@Override
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public void setContainerSize(int index, long size) {
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switch (index) {
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case 0:
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trySize = size;
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break;
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case 1:
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catchSize = size;
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break;
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case 2:
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finallySize = size;
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break;
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default:
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throw new IllegalArgumentException("Valid indexes are 0, 1, and 2.");
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}
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}
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@Override
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public boolean parseDivision(long size, FlasmLexer lexer) {
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try {
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ASMParsedSymbol symb = lexer.yylex();
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//catchBlockFlag = false;
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if (symb.type == ASMParsedSymbol.TYPE_INSTRUCTION_NAME) {
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if (((String) symb.value).toLowerCase().equals("catch")) {
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trySize = size - getHeaderSize();
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catchBlockFlag = true;
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lexBlockOpen(lexer);
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return true;
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}
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if (symb.type == ASMParsedSymbol.TYPE_INSTRUCTION_NAME) {
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if (((String) symb.value).toLowerCase().equals("finally")) {
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if (catchBlockFlag) {
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catchSize = size - getHeaderSize() - trySize;
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} else {
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trySize = size - getHeaderSize();
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}
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finallyBlockFlag = true;
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lexBlockOpen(lexer);
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return true;
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} else {
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//finallyBlockFlag = false;
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lexer.yypushback(lexer.yylength());
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}
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} else {
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//finallyBlockFlag = false;
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lexer.yypushback(lexer.yylength());
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}
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} else {
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lexer.yypushback(lexer.yylength());
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}
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} catch (IOException | ParseException ex) {
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}
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if (finallyBlockFlag) {
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finallySize = size - getHeaderSize() - trySize - catchSize;
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} else if (catchBlockFlag) {
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catchSize = size - getHeaderSize() - trySize;
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}
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lexer.yybegin(0);
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return false;
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}
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@Override
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public void translateContainer(List<List<GraphTargetItem>> contents, TranslateStack stack, List<GraphTargetItem> output, HashMap<Integer, String> regNames, HashMap<String, GraphTargetItem> variables, HashMap<String, GraphTargetItem> functions) {
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List<GraphTargetItem> tryCommands = contents.get(0);
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ActionItem catchName;
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if (catchInRegisterFlag) {
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catchName = new DirectValueActionItem(this, -1, new RegisterNumber(this.catchRegister), new ArrayList<String>());
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} else {
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catchName = new DirectValueActionItem(this, -1, this.catchName, new ArrayList<String>());
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}
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List<GraphTargetItem> catchExceptions = new ArrayList<>();
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if (catchBlockFlag) {
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catchExceptions.add(catchName);
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}
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List<List<GraphTargetItem>> catchCommands = new ArrayList<>();
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if (catchBlockFlag) {
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catchCommands.add(contents.get(1));
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}
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List<GraphTargetItem> finallyCommands = contents.get(2);
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output.add(new TryActionItem(tryCommands, catchExceptions, catchCommands, finallyCommands));
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}
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@Override
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public String toString() {
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return "Try";
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}
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@Override
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public HashMap<Integer, String> getRegNames() {
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return new HashMap<>();
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}
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@Override
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public String getName() {
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return null;
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}
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}
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