public string Expect(QueryTokens expectedQueryToken)
{
if (AtEnd)
{
throw new ApplicationException("Unexpected end of tokens!");
}
var curToken = mockTokensEnumerator.Current.Token;
if (curToken != expectedQueryToken)
{
throw new ApplicationException("Unexpected token: " + curToken + ", expected: " + expectedQueryToken);
}
var curTokenString = mockTokensEnumerator.Current.TokenString;
Advance();
return(curTokenString);
}
/// <summary>
/// Validate that the currrent token is the same as what is expected.
/// Throws an exception if it is not.
/// Advances to the next token automatically.
/// Returns the token string for further processing.
/// </summary>
public string Expect(QueryTokens expectedQueryToken)
{
var tokenString = TokenString;
if (Token == expectedQueryToken)
{
// Everything ok, move along.
Advance();
return(tokenString);
}
var curToken = Token;
//
// Expectation was not meet, throw exception.
//
TokenizerEnded();
throw new ApplicationException("Expected token: " + expectedQueryToken + ", but encountered token " + curToken + " (" + tokenString + ")");
}
/// <summary>
/// Returns true if the token is a separator for stack filters.
/// </summary>
private bool IsDescendentsSeparator(QueryTokens queryToken)
{
return(queryToken == QueryTokens.GreaterThan ||
queryToken == QueryTokens.Slash);
}
