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112 lines
3.1 KiB
112 lines
3.1 KiB
// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
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package org.jetbrains.java.decompiler.modules.decompiler.exps;
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import org.jetbrains.java.decompiler.main.collectors.BytecodeMappingTracer;
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import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
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import org.jetbrains.java.decompiler.modules.decompiler.vars.CheckTypesResult;
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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.TextBuffer;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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public class ArrayExprent extends Exprent {
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private Exprent array;
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private Exprent index;
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private final VarType hardType;
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public ArrayExprent(Exprent array, Exprent index, VarType hardType, Set<Integer> bytecodeOffsets) {
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super(EXPRENT_ARRAY);
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this.array = array;
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this.index = index;
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this.hardType = hardType;
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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 ArrayExprent(array.copy(), index.copy(), hardType, bytecode);
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}
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@Override
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public VarType getExprType() {
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VarType exprType = array.getExprType();
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if (exprType.equals(VarType.VARTYPE_NULL)) {
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return hardType.copy();
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}
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else {
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return exprType.decreaseArrayDim();
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}
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}
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@Override
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public int getExprentUse() {
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return array.getExprentUse() & index.getExprentUse() & Exprent.MULTIPLE_USES;
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}
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@Override
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public CheckTypesResult checkExprTypeBounds() {
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CheckTypesResult result = new CheckTypesResult();
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result.addMinTypeExprent(index, VarType.VARTYPE_BYTECHAR);
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result.addMaxTypeExprent(index, VarType.VARTYPE_INT);
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return result;
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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(array);
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lst.add(index);
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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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TextBuffer res = array.toJava(indent, tracer);
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if (array.getPrecedence() > getPrecedence()) { // array precedence equals 0
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res.enclose("(", ")");
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}
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VarType arrType = array.getExprType();
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if (arrType.arrayDim == 0) {
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VarType objArr = VarType.VARTYPE_OBJECT.resizeArrayDim(1); // type family does not change
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res.enclose("((" + ExprProcessor.getCastTypeName(objArr) + ")", ")");
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}
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tracer.addMapping(bytecode);
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return res.append('[').append(index.toJava(indent, tracer)).append(']');
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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 == array) {
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array = newExpr;
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}
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if (oldExpr == index) {
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index = 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 instanceof ArrayExprent)) return false;
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ArrayExprent arr = (ArrayExprent)o;
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return InterpreterUtil.equalObjects(array, arr.getArray()) &&
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InterpreterUtil.equalObjects(index, arr.getIndex());
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}
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public Exprent getArray() {
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return array;
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}
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public Exprent getIndex() {
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return index;
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}
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} |