| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.jetbrains.java.decompiler.modules.decompiler.stats; |
| |
| import org.jetbrains.java.decompiler.main.DecompilerContext; |
| import org.jetbrains.java.decompiler.modules.decompiler.DecHelper; |
| import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor; |
| import org.jetbrains.java.decompiler.modules.decompiler.StatEdge; |
| import org.jetbrains.java.decompiler.util.InterpreterUtil; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| |
| public class SequenceStatement extends Statement { |
| |
| |
| // ***************************************************************************** |
| // constructors |
| // ***************************************************************************** |
| |
| private SequenceStatement() { |
| type = Statement.TYPE_SEQUENCE; |
| } |
| |
| public SequenceStatement(List<Statement> lst) { |
| |
| this(); |
| |
| lastBasicType = lst.get(lst.size() - 1).getLastBasicType(); |
| |
| for (Statement st : lst) { |
| stats.addWithKey(st, st.id); |
| } |
| |
| first = stats.get(0); |
| } |
| |
| private SequenceStatement(Statement head, Statement tail) { |
| |
| this(Arrays.asList(head, tail)); |
| |
| List<StatEdge> lstSuccs = tail.getSuccessorEdges(STATEDGE_DIRECT_ALL); |
| if (!lstSuccs.isEmpty()) { |
| StatEdge edge = lstSuccs.get(0); |
| |
| if (edge.getType() == StatEdge.TYPE_REGULAR && edge.getDestination() != head) { |
| post = edge.getDestination(); |
| } |
| } |
| } |
| |
| |
| // ***************************************************************************** |
| // public methods |
| // ***************************************************************************** |
| |
| public static Statement isHead2Block(Statement head) { |
| |
| if (head.getLastBasicType() != Statement.LASTBASICTYPE_GENERAL) { |
| return null; |
| } |
| |
| // at most one outgoing edge |
| StatEdge edge = null; |
| List<StatEdge> lstSuccs = head.getSuccessorEdges(STATEDGE_DIRECT_ALL); |
| if (!lstSuccs.isEmpty()) { |
| edge = lstSuccs.get(0); |
| } |
| |
| if (edge != null && edge.getType() == StatEdge.TYPE_REGULAR) { |
| Statement stat = edge.getDestination(); |
| |
| if (stat != head && stat.getPredecessorEdges(StatEdge.TYPE_REGULAR).size() == 1 |
| && !stat.isMonitorEnter()) { |
| |
| if (stat.getLastBasicType() == Statement.LASTBASICTYPE_GENERAL) { |
| if (DecHelper.checkStatementExceptions(Arrays.asList(head, stat))) { |
| return new SequenceStatement(head, stat); |
| } |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| public String toJava(int indent) { |
| |
| StringBuilder buf = new StringBuilder(); |
| |
| String indstr = null; |
| boolean islabeled = isLabeled(); |
| |
| String new_line_separator = DecompilerContext.getNewLineSeparator(); |
| |
| buf.append(ExprProcessor.listToJava(varDefinitions, indent)); |
| |
| if (islabeled) { |
| indstr = InterpreterUtil.getIndentString(indent); |
| indent++; |
| buf.append(indstr).append("label").append(this.id).append(": {").append(new_line_separator); |
| } |
| |
| boolean notempty = false; |
| |
| for (int i = 0; i < stats.size(); i++) { |
| |
| Statement st = stats.get(i); |
| |
| if (i > 0 && notempty) { |
| buf.append(new_line_separator); |
| } |
| |
| String str = ExprProcessor.jmpWrapper(st, indent, false); |
| buf.append(str); |
| |
| notempty = (str.trim().length() > 0); |
| } |
| |
| if (islabeled) { |
| buf.append(indstr).append("}").append(new_line_separator); |
| } |
| |
| return buf.toString(); |
| } |
| |
| public Statement getSimpleCopy() { |
| return new SequenceStatement(); |
| } |
| } |