public void Terminal_Any()
{
var input = "ijk";
var bytes = Encoding.UTF8.GetBytes(input);
var iterator = new ByteInputIterator(bytes);
AExpression any = new Sequence(new AnyCharacter(), new AnyCharacter());
var visitor = new NpegParserVisitor(iterator);
any.Accept(visitor);
Assert.IsTrue(visitor.IsMatch);
Assert.IsTrue(iterator.Index == 2,
"Expected two characters to be consumed and Iterator updated by 2. 0, 1 .. points to 2");
input = "ij";
bytes = Encoding.UTF8.GetBytes(input);
iterator = new ByteInputIterator(bytes);
visitor = new NpegParserVisitor(iterator);
any.Accept(visitor);
Assert.IsTrue(visitor.IsMatch);
Assert.IsTrue(iterator.Index == 2,
"Expected two characters to be consumed and Iterator updated by 2. 0, 1 .. points to 2");
input = "";
bytes = Encoding.UTF8.GetBytes(input);
iterator = new ByteInputIterator(bytes);
any = new AnyCharacter();
visitor = new NpegParserVisitor(iterator);
any.Accept(visitor);
Assert.IsFalse(visitor.IsMatch);
Assert.IsTrue(iterator.Index == 0, "Expected no characters to be consumed and index stay at zero.");
var number = new Sequence(
new OneOrMore(new CharacterClass {
ClassExpression = "[0-9]"
}),
new NotPredicate(
new AnyCharacter()
)
);
input = "012345.";
bytes = Encoding.UTF8.GetBytes(input);
iterator = new ByteInputIterator(bytes);
visitor = new NpegParserVisitor(iterator);
number.Accept(visitor);
Assert.IsFalse(visitor.IsMatch);
}
public IProgram Visit(Sequence program)
{
IList <IProgram> instructions = program.Accept(new InstructionList());
return(IProgram.MakeSequence(instructions));
}
