| /* |
| * 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.ExprProcessor; |
| import org.jetbrains.java.decompiler.modules.decompiler.StatEdge; |
| import org.jetbrains.java.decompiler.modules.decompiler.exps.Exprent; |
| import org.jetbrains.java.decompiler.util.InterpreterUtil; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| |
| public class DoStatement extends Statement { |
| |
| public static final int LOOP_DO = 0; |
| public static final int LOOP_DOWHILE = 1; |
| public static final int LOOP_WHILE = 2; |
| public static final int LOOP_FOR = 3; |
| |
| private int looptype; |
| |
| private List<Exprent> initExprent = new ArrayList<Exprent>(); |
| private List<Exprent> conditionExprent = new ArrayList<Exprent>(); |
| private List<Exprent> incExprent = new ArrayList<Exprent>(); |
| |
| // ***************************************************************************** |
| // constructors |
| // ***************************************************************************** |
| |
| private DoStatement() { |
| type = Statement.TYPE_DO; |
| looptype = LOOP_DO; |
| |
| initExprent.add(null); |
| conditionExprent.add(null); |
| incExprent.add(null); |
| } |
| |
| private DoStatement(Statement head) { |
| |
| this(); |
| |
| first = head; |
| stats.addWithKey(first, first.id); |
| |
| // post is always null! |
| } |
| |
| // ***************************************************************************** |
| // public methods |
| // ***************************************************************************** |
| |
| public static Statement isHead(Statement head) { |
| |
| if (head.getLastBasicType() == LASTBASICTYPE_GENERAL && !head.isMonitorEnter()) { |
| |
| // at most one outgoing edge |
| StatEdge edge = null; |
| List<StatEdge> lstSuccs = head.getSuccessorEdges(STATEDGE_DIRECT_ALL); |
| if (!lstSuccs.isEmpty()) { |
| edge = lstSuccs.get(0); |
| } |
| |
| // regular loop |
| if (edge != null && edge.getType() == StatEdge.TYPE_REGULAR && edge.getDestination() == head) { |
| return new DoStatement(head); |
| } |
| |
| // continues |
| if (head.type != TYPE_DO && (edge == null || edge.getType() != StatEdge.TYPE_REGULAR) && |
| head.getContinueSet().contains(head.getBasichead())) { |
| return new DoStatement(head); |
| } |
| } |
| |
| return null; |
| } |
| |
| public String toJava(int indent) { |
| String indstr = InterpreterUtil.getIndentString(indent); |
| StringBuilder buf = new StringBuilder(); |
| |
| String new_line_separator = DecompilerContext.getNewLineSeparator(); |
| |
| buf.append(ExprProcessor.listToJava(varDefinitions, indent)); |
| |
| if (isLabeled()) { |
| buf.append(indstr).append("label").append(this.id).append(":").append(new_line_separator); |
| } |
| |
| switch (looptype) { |
| case LOOP_DO: |
| buf.append(indstr).append("while(true) {").append(new_line_separator); |
| buf.append(ExprProcessor.jmpWrapper(first, indent + 1, true)); |
| buf.append(indstr).append("}").append(new_line_separator); |
| break; |
| case LOOP_DOWHILE: |
| buf.append(indstr).append("do {").append(new_line_separator); |
| buf.append(ExprProcessor.jmpWrapper(first, indent + 1, true)); |
| buf.append(indstr).append("} while(").append(conditionExprent.get(0).toJava(indent)).append(");").append(new_line_separator); |
| break; |
| case LOOP_WHILE: |
| buf.append(indstr).append("while(").append(conditionExprent.get(0).toJava(indent)).append(") {").append(new_line_separator); |
| buf.append(ExprProcessor.jmpWrapper(first, indent + 1, true)); |
| buf.append(indstr).append("}").append(new_line_separator); |
| break; |
| case LOOP_FOR: |
| buf.append(indstr).append("for(").append(initExprent.get(0) == null ? "" : initExprent.get(0).toJava(indent)).append("; ") |
| .append(conditionExprent.get(0).toJava(indent)).append("; ").append(incExprent.get(0).toJava(indent)).append(") {") |
| .append(new_line_separator); |
| buf.append(ExprProcessor.jmpWrapper(first, indent + 1, true)); |
| buf.append(indstr).append("}").append(new_line_separator); |
| } |
| |
| return buf.toString(); |
| } |
| |
| public List<Object> getSequentialObjects() { |
| |
| List<Object> lst = new ArrayList<Object>(); |
| |
| switch (looptype) { |
| case LOOP_FOR: |
| if (getInitExprent() != null) { |
| lst.add(getInitExprent()); |
| } |
| case LOOP_WHILE: |
| lst.add(getConditionExprent()); |
| } |
| |
| lst.add(first); |
| |
| switch (looptype) { |
| case LOOP_DOWHILE: |
| lst.add(getConditionExprent()); |
| break; |
| case LOOP_FOR: |
| lst.add(getIncExprent()); |
| } |
| |
| return lst; |
| } |
| |
| public void replaceExprent(Exprent oldexpr, Exprent newexpr) { |
| if (initExprent.get(0) == oldexpr) { |
| initExprent.set(0, newexpr); |
| } |
| if (conditionExprent.get(0) == oldexpr) { |
| conditionExprent.set(0, newexpr); |
| } |
| if (incExprent.get(0) == oldexpr) { |
| incExprent.set(0, newexpr); |
| } |
| } |
| |
| public Statement getSimpleCopy() { |
| return new DoStatement(); |
| } |
| |
| // ***************************************************************************** |
| // getter and setter methods |
| // ***************************************************************************** |
| |
| public List<Exprent> getInitExprentList() { |
| return initExprent; |
| } |
| |
| public List<Exprent> getConditionExprentList() { |
| return conditionExprent; |
| } |
| |
| public List<Exprent> getIncExprentList() { |
| return incExprent; |
| } |
| |
| public Exprent getConditionExprent() { |
| return conditionExprent.get(0); |
| } |
| |
| public void setConditionExprent(Exprent conditionExprent) { |
| this.conditionExprent.set(0, conditionExprent); |
| } |
| |
| public Exprent getIncExprent() { |
| return incExprent.get(0); |
| } |
| |
| public void setIncExprent(Exprent incExprent) { |
| this.incExprent.set(0, incExprent); |
| } |
| |
| public Exprent getInitExprent() { |
| return initExprent.get(0); |
| } |
| |
| public void setInitExprent(Exprent initExprent) { |
| this.initExprent.set(0, initExprent); |
| } |
| |
| public int getLooptype() { |
| return looptype; |
| } |
| |
| public void setLooptype(int looptype) { |
| this.looptype = looptype; |
| } |
| } |