/**
* JReversePro - Java Decompiler / Disassembler.
* Copyright (C) 2008 Karthik Kumar.
*
* 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.jreversepro.ast.evaluator;
import java.util.Arrays;
import org.jreversepro.ast.expression.Assignment;
import org.jreversepro.ast.expression.Expression;
import org.jreversepro.ast.expression.Variable;
import org.jreversepro.ast.intermediate.CompleteLine;
import org.jreversepro.reflect.instruction.Instruction;
public class ReferenceStoreEvaluator extends AbstractInstructionEvaluator {
public ReferenceStoreEvaluator(EvaluatorContext context) {
super(context);
}
@Override
void evaluate(Instruction ins) {
switch (ins.opcode) {
case OPCODE_ASTORE:
operateStoreInstruction(ins, ins.getArgUnsignedWide());
break;
case OPCODE_ASTORE_0:
case OPCODE_ASTORE_1:
case OPCODE_ASTORE_2:
case OPCODE_ASTORE_3:
operateStoreInstruction(ins, ins.opcode - OPCODE_ASTORE_0);
break;
}
}
private void operateStoreInstruction(Instruction ins,
int variableIndexToSymbolTable) {
int indexToSymbolTable = variableIndexToSymbolTable;
Expression rhs = evalMachine.pop();
Variable lhs = new Variable(varTable, rhs.getType(), indexToSymbolTable,
ins.currentPc);
statements.append(new CompleteLine(ins, new Assignment(lhs, rhs)));
// Hint to the symbol table about the type.
varTable.recordLocalDatatypeReference(variableIndexToSymbolTable, rhs
.getType(), ins.currentPc);
}
@Override
Iterable<Integer> getProcessingOpcodes() {
return Arrays.asList(OPCODE_ASTORE, OPCODE_ASTORE_0, OPCODE_ASTORE_1,
OPCODE_ASTORE_2, OPCODE_ASTORE_3);
}
}