public static IList<IFilterDescriptor> Create(string input)
{
IList<IFilterDescriptor> result = new List<IFilterDescriptor>();
FilterParser parser = new FilterParser(input);
IFilterNode filterNode = parser.Parse();
if (filterNode == null)
{
return result;
}
FilterNodeVisitor visitor = new FilterNodeVisitor();
filterNode.Accept(visitor);
result.Add(visitor.Result);
return result;
}
private IFilterNode Parse(string input)
{
FilterParser parser = new FilterParser(input);
return parser.Parse();
}
public void AlternativeBasicsParsing()
{
// Can work with/without whitespace surrounded
parser.Parse("prop==1||prop==2");
parser.Parse("prop==1 || prop==2");
// Both side must be an expression
Assert.ThrowsAny <Exception>(() => parser.Parse("different || \"ala\" "));
Assert.ThrowsAny <Exception>(() => parser.Parse("prop==different || \"ala\" "));
Assert.ThrowsAny <Exception>(() => parser.Parse("different || prop==\"ala\" "));
}
public void When_Parsing_Incorrect_Str_Then_Exception_Are_Thrown()
{
// ARRAGE
InitializeFakeObjects();
// ACTS & ASSERTS
Assert.Throws <InvalidOperationException>(() => _parser.Parse("invalid$outer(FirstName),inner(LastName)"));
Assert.Throws <InvalidOperationException>(() => _parser.Parse("select"));
Assert.Throws <InvalidOperationException>(() => _parser.Parse("select$"));
}
public void NegationBasicParsing()
{
parser.Parse("!(prop==different)");
parser.Parse("! (prop==different)");
// Negation must be braced. And there no whitespace is allowed between negation and brace.
Assert.ThrowsAny <Exception>(() => parser.Parse("!prop==different"));
}
public void BooleanProperty()
{
var result = parser.Parse(" delta==true");
Assert.Equal("(__EqualityEvaluator:delta==true)", result.SemanticsString);
}
