private void DiscardToken()
{
_lookaheadFirst = _lookaheadSecond.Clone();
if (_tokenSequence.Any())
_lookaheadSecond = _tokenSequence.Pop();
else
_lookaheadSecond = new LqlToken(TokenType.SequenceTerminator, string.Empty);
}
public SearchRequest Parse(IList<LqlToken> tokens)
{
LoadSequenceStack(tokens);
_lookaheadFirst = _tokenSequence.Pop();
_lookaheadSecond = _tokenSequence.Pop();
_searchRequest = new SearchRequest();
Match();
DiscardToken(TokenType.SequenceTerminator);
return _searchRequest;
}
private bool IsOperator(LqlToken token)
{
return token.TokenType == TokenType.Equals
|| token.TokenType == TokenType.NotEquals
|| token.TokenType == TokenType.Like
|| token.TokenType == TokenType.NotLike;
}
private bool IsObject(LqlToken token)
{
return token.TokenType == TokenType.Application
|| token.TokenType == TokenType.ExceptionType
|| token.TokenType == TokenType.Fingerprint
|| token.TokenType == TokenType.Message
|| token.TokenType == TokenType.StackFrame;
}
private LqlOperator GetOperator(LqlToken token)
{
switch (token.TokenType)
{
case TokenType.Equals:
return LqlOperator.Equals;
case TokenType.NotEquals:
return LqlOperator.NotEquals;
case TokenType.Like:
return LqlOperator.Like;
case TokenType.NotLike:
return LqlOperator.NotLike;
case TokenType.In:
return LqlOperator.In;
case TokenType.NotIn:
return LqlOperator.NotIn;
default:
throw new LqlParserException("Expected =, !=, LIKE, NOT LIKE, IN, NOT IN but found: " + token.Value);
}
}
private LqlObject GetObject(LqlToken token)
{
switch (token.TokenType)
{
case TokenType.Application:
return LqlObject.Application;
case TokenType.ExceptionType:
return LqlObject.ExceptionType;
case TokenType.Fingerprint:
return LqlObject.Fingerprint;
case TokenType.Message:
return LqlObject.Message;
case TokenType.StackFrame:
return LqlObject.StackFrame;
default:
throw new LqlParserException("Expected app, ex, msg, sf or fingerprint but found: " + token.Value);
}
}
