private ExpressionNode ParseNumberLiteral()
{
string text = _token.Text;
bool hasHexModifier = text.EndsWith("h", StringComparison.OrdinalIgnoreCase);
bool hasExponentialModifier = text.IndexOfAny(new char[] { '.', 'E', 'e' }) != -1;
if (hasExponentialModifier && !hasHexModifier)
{
return(LiteralExpression.FromDouble(ParseReal()));
}
long integer = ParseInteger();
// If the integer can be represented as Int32 we return
// an Int32 literal. Otherwise we return an Int64.
try
{
checked
{
return(LiteralExpression.FromInt32((int)integer));
}
}
catch (OverflowException)
{
return(LiteralExpression.FromInt64(integer));
}
}