public void Satisfy_FailingPredicate_ReturnsError()
{
var parser = Chars.Satisfy(c => false);
var result = parser.Parse("xyz");
ParseAssert.IsError(result);
}
public void Satisfy_PassingPredicate_ReturnsChar()
{
var parser = Chars.Satisfy(c => true);
var result = parser.Parse("xyz");
ParseAssert.ValueEquals('x', result);
}
/// <summary>
/// Parses an integer value.
/// </summary>
public static IParser <int> Int()
{
return(from x in Chars.Satisfy(c => char.IsDigit(c) ||
c == '-' ||
c == '+').Many1()
select int.Parse(x));
}
/// <summary>
/// Parses a double value.
/// </summary>
public static IParser <double> Double()
{
return(from x in Chars.Satisfy(c => char.IsDigit(c) ||
c == '-' ||
c == '+' ||
c == '.').Many1()
select double.Parse(x, CultureInfo.InvariantCulture));
}
public void Satisfy_PredicateNull_ThrowsException()
{
Chars.Satisfy(null);
}