private Expression ReadTerm( Expression parent )
{
Expression factor = ReadFactor( parent );
if ( Tokenizer.IsNextToken( "*", "/", "%", "^" ) )
{
OperatorExpression result = new OperatorExpression( parent );
result.Left = factor;
result.Operator = CurrentToken;
ReadNextToken();
result.Right = ReadExpression( parent );
return result;
}
else
return factor;
}
private Expression ReadExpression( Expression parent )
{
Expression term = ReadTerm( parent );
if ( Tokenizer.IsNextToken( "+", "-" ) )
{
OperatorExpression result = new OperatorExpression( parent );
result.Left = term;
result.Operator = CurrentToken;
ReadNextToken();
result.Right = ReadExpression( parent );
return result;
}
else
return term;
}