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149 lines
4.2 KiB
149 lines
4.2 KiB
/*
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* Copyright 2000-2017 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jetbrains.java.decompiler.modules.decompiler.exps;
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import org.jetbrains.java.decompiler.main.TextBuffer;
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import org.jetbrains.java.decompiler.main.collectors.BytecodeMappingTracer;
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import org.jetbrains.java.decompiler.struct.gen.VarType;
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import org.jetbrains.java.decompiler.util.InterpreterUtil;
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import org.jetbrains.java.decompiler.util.ListStack;
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import java.util.*;
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public class IfExprent extends Exprent {
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public static final int IF_EQ = 0;
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public static final int IF_NE = 1;
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public static final int IF_LT = 2;
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public static final int IF_GE = 3;
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public static final int IF_GT = 4;
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public static final int IF_LE = 5;
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public static final int IF_NULL = 6;
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public static final int IF_NONNULL = 7;
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public static final int IF_ICMPEQ = 8;
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public static final int IF_ICMPNE = 9;
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public static final int IF_ICMPLT = 10;
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public static final int IF_ICMPGE = 11;
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public static final int IF_ICMPGT = 12;
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public static final int IF_ICMPLE = 13;
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public static final int IF_ACMPEQ = 14;
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public static final int IF_ACMPNE = 15;
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public static final int IF_CAND = 16;
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public static final int IF_COR = 17;
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public static final int IF_NOT = 18;
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public static final int IF_VALUE = 19;
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private static final int[] FUNC_TYPES = {
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FunctionExprent.FUNCTION_EQ,
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FunctionExprent.FUNCTION_NE,
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FunctionExprent.FUNCTION_LT,
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FunctionExprent.FUNCTION_GE,
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FunctionExprent.FUNCTION_GT,
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FunctionExprent.FUNCTION_LE,
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FunctionExprent.FUNCTION_EQ,
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FunctionExprent.FUNCTION_NE,
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FunctionExprent.FUNCTION_EQ,
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FunctionExprent.FUNCTION_NE,
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FunctionExprent.FUNCTION_LT,
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FunctionExprent.FUNCTION_GE,
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FunctionExprent.FUNCTION_GT,
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FunctionExprent.FUNCTION_LE,
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FunctionExprent.FUNCTION_EQ,
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FunctionExprent.FUNCTION_NE,
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FunctionExprent.FUNCTION_CADD,
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FunctionExprent.FUNCTION_COR,
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FunctionExprent.FUNCTION_BOOL_NOT,
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-1
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};
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private Exprent condition;
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public IfExprent(int ifType, ListStack<Exprent> stack, Set<Integer> bytecodeOffsets) {
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this(null, bytecodeOffsets);
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if (ifType <= IF_LE) {
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stack.push(new ConstExprent(0, true, null));
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}
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else if (ifType <= IF_NONNULL) {
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stack.push(new ConstExprent(VarType.VARTYPE_NULL, null, null));
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}
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if (ifType == IF_VALUE) {
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condition = stack.pop();
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}
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else {
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condition = new FunctionExprent(FUNC_TYPES[ifType], stack, bytecodeOffsets);
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}
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}
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private IfExprent(Exprent condition, Set<Integer> bytecodeOffsets) {
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super(EXPRENT_IF);
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this.condition = condition;
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addBytecodeOffsets(bytecodeOffsets);
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}
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@Override
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public Exprent copy() {
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return new IfExprent(condition.copy(), bytecode);
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}
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@Override
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public List<Exprent> getAllExprents() {
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List<Exprent> lst = new ArrayList<>();
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lst.add(condition);
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return lst;
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}
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@Override
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public TextBuffer toJava(int indent, BytecodeMappingTracer tracer) {
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tracer.addMapping(bytecode);
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return condition.toJava(indent, tracer).enclose("if (", ")");
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}
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@Override
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public void replaceExprent(Exprent oldExpr, Exprent newExpr) {
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if (oldExpr == condition) {
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condition = newExpr;
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}
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}
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@Override
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public boolean equals(Object o) {
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if (o == this) return true;
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if (o == null || !(o instanceof IfExprent)) return false;
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IfExprent ie = (IfExprent)o;
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return InterpreterUtil.equalObjects(condition, ie.getCondition());
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}
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public IfExprent negateIf() {
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condition = new FunctionExprent(FunctionExprent.FUNCTION_BOOL_NOT, condition, condition.bytecode);
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return this;
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}
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public Exprent getCondition() {
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return condition;
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}
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public void setCondition(Exprent condition) {
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this.condition = condition;
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}
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}
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