Java 类soot.jimple.SubExpr 实例源码

@Override
public void visit(Value e) {
    if (e instanceof SubExpr) {
        SubExpr se = (SubExpr) e;
        add(e, se.getOp1(), se.getOp2());
    }
}

@Override
public void caseSubExpr(SubExpr v) {
    throw new RuntimeException("todo");

}

public void caseSubExpr(SubExpr v) {
    printBinaryExpr(v);
}

private void handleBinopExpr(BinopExpr be, Stmt stmt, Type tlhs)
{
    Value opl = be.getOp1(), opr = be.getOp2();
    Type tl = AugEvalFunction.eval_(this.tg, opl, stmt, this.jb),
        tr = AugEvalFunction.eval_(this.tg, opr, stmt, this.jb);

    if ( be instanceof AddExpr
        || be instanceof SubExpr
        || be instanceof MulExpr
        || be instanceof DivExpr
        || be instanceof RemExpr
        || be instanceof GeExpr
        || be instanceof GtExpr
        || be instanceof LeExpr
        || be instanceof LtExpr
        || be instanceof ShlExpr
        || be instanceof ShrExpr
        || be instanceof UshrExpr )
    {
        if ( tlhs instanceof IntegerType )
        {
            be.setOp1(this.uv.visit(opl, IntType.v(), stmt));
            be.setOp2(this.uv.visit(opr, IntType.v(), stmt));
        }
    }
    else if ( be instanceof CmpExpr
        || be instanceof CmpgExpr
        || be instanceof CmplExpr )
    {
        // No checks in the original assigner
    }
    else if ( be instanceof AndExpr
        || be instanceof OrExpr
        || be instanceof XorExpr )
    {
        be.setOp1(this.uv.visit(opl, tlhs, stmt));
        be.setOp2(this.uv.visit(opr, tlhs, stmt));
    }
    else if ( be instanceof EqExpr
        || be instanceof NeExpr )
    {
        if ( tl instanceof BooleanType && tr instanceof BooleanType )
        { }
        else if ( tl instanceof Integer1Type || tr instanceof Integer1Type )
        { }
        else if ( tl instanceof IntegerType )
        {
            be.setOp1(this.uv.visit(opl, IntType.v(), stmt));
            be.setOp2(this.uv.visit(opr, IntType.v(), stmt));
        }
    }
}

@Override
public void caseSubExpr(SubExpr se) {
       stmtV.addInsn(buildCalculatingBinaryInsn("SUB", se.getOp1(), se.getOp2()), origStmt);
}

public NumericConstant getResult(BinopExpr binop){
    if(DEBUG)
        System.out.println("Binop expr"+binop);
    Value leftOp = binop.getOp1();
    Value rightOp = binop.getOp2();

    int op = 0;
    if(binop instanceof AddExpr){
        op=1;
    }
    else if(binop instanceof SubExpr || 
            binop instanceof DCmpExpr || binop instanceof DCmpgExpr
            || binop instanceof DCmplExpr){
        op=2;
    }
    else if(binop instanceof MulExpr){
        op=3;
    }

    if(op == 0){
        if(DEBUG){
            System.out.println("not add sub or mult");
            System.out.println(binop.getClass().getName());
        }           
        return null;
    }
    NumericConstant constant = null;
    if(leftOp instanceof LongConstant  && rightOp instanceof LongConstant){
        if(DEBUG)
            System.out.println("long constants!!");
        if(op ==1)
            constant = ((LongConstant)leftOp).add((LongConstant)rightOp);
        else if(op ==2)
            constant = ((LongConstant)leftOp).subtract((LongConstant)rightOp);
        else if (op ==3)
            constant = ((LongConstant)leftOp).multiply((LongConstant)rightOp);
    }
    else if(leftOp instanceof DoubleConstant  && rightOp instanceof DoubleConstant){
        if(DEBUG)
            System.out.println("double constants!!");
        if(op ==1)
            constant = ((DoubleConstant)leftOp).add((DoubleConstant)rightOp);
        else if(op ==2)
            constant = ((DoubleConstant)leftOp).subtract((DoubleConstant)rightOp);
        else if (op ==3)
            constant = ((DoubleConstant)leftOp).multiply((DoubleConstant)rightOp);

    }
    else if(leftOp instanceof FloatConstant  && rightOp instanceof FloatConstant){
        if(DEBUG)
            System.out.println("Float constants!!");
        if(op ==1)
            constant = ((FloatConstant)leftOp).add((FloatConstant)rightOp);
        else if(op ==2)
            constant = ((FloatConstant)leftOp).subtract((FloatConstant)rightOp);
        else if (op ==3)
            constant = ((FloatConstant)leftOp).multiply((FloatConstant)rightOp);
    }
    else if(leftOp instanceof IntConstant  && rightOp instanceof IntConstant){
        if(DEBUG)
            System.out.println("Integer constants!!");
        if(op ==1)
            constant = ((IntConstant)leftOp).add((IntConstant)rightOp);
        else if(op ==2)
            constant = ((IntConstant)leftOp).subtract((IntConstant)rightOp);
        else if (op ==3)
            constant = ((IntConstant)leftOp).multiply((IntConstant)rightOp);
    }

    return constant;
}

public void caseSubExpr(SubExpr expr) {
    caseBinopExpr(expr);
}

@Override
public void caseSubExpr(SubExpr arg0) {
    translateBinOp(arg0);
}

@Override
public void caseSubExpr(SubExpr arg0) {
    translateBinOp(arg0);
}

/**
 * DOC
 * 
 * @see soot.jimple.ExprSwitch#caseSubExpr(soot.jimple.SubExpr)
 */
@Override
public void caseSubExpr(SubExpr v) {
    v.getOp1().apply(this);
    v.getOp2().apply(this);
}

@Override
public void caseSubExpr(SubExpr v) {
    throwInvalidWriteException(v);
}

@Override
public void caseSubExpr(SubExpr v) {
    handleBinaryExpr(v.getOp1(), v.getOp2());
}

/**
 * It is not neccessary to treat arithmetic expressions. The SecurityLevels
 * of this expressions are treated at an other place.
 * @param v an arithmetic expression
 */
@Override
public void caseSubExpr(SubExpr v) {
    logger.finest("Sub Expr identified " + callingStmt.toString());
    rightElement = RightElement.NOT;
}

/**
 * The method should update the <em>security level</em> of a {@link SubExpr}
 * , but it is not possible to update the level of an expression.
 * 
 * @param v
 *            The expression for which the <em>security level</em> should be
 *            updated.
 * @see soot.jimple.ExprSwitch#caseSubExpr(soot.jimple.SubExpr)
 * @throws InvalidSwitchException
 *             Always, because the update is not possible.
 */
@Override
public void caseSubExpr(SubExpr v) {
    throw new SwitchException(getMsg("exception.analysis.switch.update_error",
                                     this.getClass().getSimpleName(),
                                     v.getClass().getSimpleName(),
                                     v.toString(),
                                     getSourceLine()));
}

/**
 * Looks up the <em>security level</em> for the given binary expression and
 * stores the level in {@link SecurityLevelValueReadSwitch#level}. For a
 * {@link SubExpr} this is the strongest operand <em>security level</em> of
 * the given binary expression.
 * 
 * @param v
 *            The expression for which the <em>security level</em> should be
 *            looked up.
 * @see soot.jimple.ExprSwitch#caseSubExpr(soot.jimple.SubExpr)
 * @see SecurityLevelValueReadSwitch#handleBinaryOperation(BinopExpr)
 */
@Override
public void caseSubExpr(SubExpr v) {
    handleBinaryOperation(v);
}