/**
* 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 LongFloatDoubleStoreEvaluator extends AbstractInstructionEvaluator {
public LongFloatDoubleStoreEvaluator(EvaluatorContext context) {
super(context);
}
@Override
void evaluate(Instruction ins) {
int indexToSymbolTable = getIndexToSymbolTable(ins);
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(indexToSymbolTable, rhs.getType(),
ins.currentPc);
}
private int getIndexToSymbolTable(Instruction ins) {
int opcode = ins.opcode;
switch (opcode) {
case OPCODE_LSTORE:
case OPCODE_FSTORE:
case OPCODE_DSTORE:
return ins.getArgUnsignedWide();
case OPCODE_LSTORE_0:
case OPCODE_LSTORE_1:
case OPCODE_LSTORE_2:
case OPCODE_LSTORE_3:
return opcode - OPCODE_LSTORE_0;
case OPCODE_FSTORE_0:
case OPCODE_FSTORE_1:
case OPCODE_FSTORE_2:
case OPCODE_FSTORE_3:
return opcode - OPCODE_FSTORE_0;
case OPCODE_DSTORE_0:
case OPCODE_DSTORE_1:
case OPCODE_DSTORE_2:
case OPCODE_DSTORE_3:
return opcode - OPCODE_DSTORE_0;
default:
throw new RuntimeException("Invalid Opcode specified. " + opcode);
}
}
@Override
Iterable<Integer> getProcessingOpcodes() {
return Arrays.asList(OPCODE_LSTORE, OPCODE_LSTORE_0, OPCODE_LSTORE_1,
OPCODE_LSTORE_2,
OPCODE_LSTORE_3, // Store longs
OPCODE_FSTORE, OPCODE_FSTORE_0, OPCODE_FSTORE_1, OPCODE_FSTORE_2,
OPCODE_FSTORE_3, // Store Floats
OPCODE_DSTORE, // Store doubles
OPCODE_DSTORE_0, OPCODE_DSTORE_1, OPCODE_DSTORE_2, OPCODE_DSTORE_3);
}
}