public void TestResetOnANTLRStringStream()
{
ANTLRStringStream stream = new ANTLRStringStream("One\r\nTwo");
Assert.AreEqual(0, stream.Index);
Assert.AreEqual(0, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // O
stream.Consume(); // n
Assert.AreEqual('e', stream.LA(1));
Assert.AreEqual(2, stream.Index);
stream.Reset();
Assert.AreEqual('O', stream.LA(1));
Assert.AreEqual(0, stream.Index);
Assert.AreEqual(0, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // O
Assert.AreEqual('n', stream.LA(1));
Assert.AreEqual(1, stream.Index);
Assert.AreEqual(1, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // n
Assert.AreEqual('e', stream.LA(1));
Assert.AreEqual(2, stream.Index);
Assert.AreEqual(2, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // e
}
public int LA(int offset)
{
var number = stream.LA(offset);
if (number == -1)
{
return(number);
}
return(char.ToLowerInvariant((char)number));
}
public void TestResetOnANTLRStringStream()
{
ANTLRStringStream stream = new ANTLRStringStream("One\r\nTwo");
Assert.AreEqual(0, stream.Index());
Assert.AreEqual(0, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // O
stream.Consume(); // n
Assert.AreEqual('e', stream.LA(1));
Assert.AreEqual(2, stream.Index());
stream.Reset();
Assert.AreEqual('O', stream.LA(1));
Assert.AreEqual(0, stream.Index());
Assert.AreEqual(0, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // O
Assert.AreEqual('n', stream.LA(1));
Assert.AreEqual(1, stream.Index());
Assert.AreEqual(1, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // n
Assert.AreEqual('e', stream.LA(1));
Assert.AreEqual(2, stream.Index());
Assert.AreEqual(2, stream.CharPositionInLine);
Assert.AreEqual(1, stream.Line);
stream.Consume(); // e
}
