public void Visit(MulExpr mulExpr, object[] args)
{
mulExpr.FirstOp.Accept(this);
mulExpr.SecondOp.Accept(this);
RightValue v1 = readRightValue(mulExpr.FirstOp);
RightValue v2 = readRightValue(mulExpr.SecondOp);
DataType resultType = readAlgoOperand(v1, v2, mulExpr.Location);
if (resultType == DataType.Int)
{
IntConst result = new IntConst();
result.Value = Convert.ToInt32(v1.GetValueObject()) * Convert.ToInt32(v2.GetValueObject());
mulExpr.RightValue = result;
//mulExpr.DataType = DataType.Int;
}
else if (resultType == DataType.Float)
{
FloatConst result = new FloatConst();
result.Value = Convert.ToDouble(v1.GetValueObject()) * Convert.ToDouble(v2.GetValueObject());
mulExpr.RightValue = result;
//mulExpr.DataType = DataType.Float;
}
else
{
throw new Exception();
}
}
private Expr parseMulExpr()
{
Expr expr = parseParenExpr();
while (true)
{
int token = parseToken();
switch (token)
{
case '%':
expr = new ModExpr(expr, parseParenExpr());
break;
case '*':
expr = new MulExpr(expr, parseParenExpr());
break;
case '/':
expr = new DivExpr(expr, parseParenExpr());
break;
default:
_peekToken = token;
return(expr);
}
}
}
/// <summary>
/// Validate a multiplication expression.
/// </summary>
/// <param name="mulex">
/// is the expression. </param>
/// <returns> null. </returns>
public virtual object visit(MulExpr mulex)
{
printBinExpr("MUL", mulex);
return(null);
}
/// <param name="mulex">
/// is the multiply expression. </param>
/// <returns> a new function. </returns>
public virtual object visit(MulExpr ex)
{
ex.left().accept(this);
ex.right().accept(this);
return(null);
}
/// <param name="mulex">
/// is the multiply expression. </param>
/// <returns> a new function. </returns>
public virtual object visit(MulExpr mulex)
{
return(make_ArithOp(mulex, new QName("fs", "times", OpFunctionLibrary.XPATH_OP_NS)));
}
