soot.jimple.internal.AbstractCastExpr Maven / Gradle / Ivy
package soot.jimple.internal;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1999 Patrick Lam
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.ArrayList;
import java.util.List;
import soot.ArrayType;
import soot.RefType;
import soot.Type;
import soot.Unit;
import soot.UnitPrinter;
import soot.Value;
import soot.ValueBox;
import soot.baf.Baf;
import soot.grimp.PrecedenceTest;
import soot.jimple.CastExpr;
import soot.jimple.ConvertToBaf;
import soot.jimple.ExprSwitch;
import soot.jimple.Jimple;
import soot.jimple.JimpleToBafContext;
import soot.util.Switch;
@SuppressWarnings("serial")
abstract public class AbstractCastExpr implements CastExpr, ConvertToBaf {
final ValueBox opBox;
Type type;
AbstractCastExpr(Value op, Type type) {
this(Jimple.v().newImmediateBox(op), type);
}
public abstract Object clone();
protected AbstractCastExpr(ValueBox opBox, Type type) {
this.opBox = opBox;
this.type = type;
}
public boolean equivTo(Object o) {
if (o instanceof AbstractCastExpr) {
AbstractCastExpr ace = (AbstractCastExpr) o;
return opBox.getValue().equivTo(ace.opBox.getValue()) && type.equals(ace.type);
}
return false;
}
/** Returns a hash code for this object, consistent with structural equality. */
public int equivHashCode() {
return opBox.getValue().equivHashCode() * 101 + type.hashCode() + 17;
}
public String toString() {
return "(" + type.toString() + ") " + opBox.getValue().toString();
}
public void toString(UnitPrinter up) {
up.literal("(");
up.type(type);
up.literal(") ");
if (PrecedenceTest.needsBrackets(opBox, this)) {
up.literal("(");
}
opBox.toString(up);
if (PrecedenceTest.needsBrackets(opBox, this)) {
up.literal(")");
}
}
@Override
public Value getOp() {
return opBox.getValue();
}
@Override
public void setOp(Value op) {
opBox.setValue(op);
}
@Override
public ValueBox getOpBox() {
return opBox;
}
@Override
public final List getUseBoxes() {
List list = new ArrayList();
list.addAll(opBox.getValue().getUseBoxes());
list.add(opBox);
return list;
}
public Type getCastType() {
return type;
}
public void setCastType(Type castType) {
this.type = castType;
}
public Type getType() {
return type;
}
public void apply(Switch sw) {
((ExprSwitch) sw).caseCastExpr(this);
}
public void convertToBaf(JimpleToBafContext context, List out) {
final Type toType = getCastType();
final Type fromType = getOp().getType();
((ConvertToBaf) getOp()).convertToBaf(context, out);
Unit u;
if (toType instanceof ArrayType || toType instanceof RefType) {
u = Baf.v().newInstanceCastInst(toType);
} else {
if (!fromType.equals(toType)) {
u = Baf.v().newPrimitiveCastInst(fromType, toType);
} else {
u = Baf.v().newNopInst();
}
}
out.add(u);
u.addAllTagsOf(context.getCurrentUnit());
}
}