public IEither <T, ParseError> Parse(IInputReader input)
{
if (input.EndOfStream)
{
return(ParseResult.Success(default(T)));
}
return(ParseResult.Error <T>(input, "Expected end of input"));
}
public static ParseResult <string, string> Parse(string insertQuery)
{
if (string.IsNullOrWhiteSpace(insertQuery))
{
return(ParseResult.Error <string, string>("Insert query is empty"));
}
return(insertQuery.Aggregate(CreateInsertQueryParserState(), (x, character) => { x.Process(character); return x; })
.GetResult());
}
public IEither <T, ParseError> Parse(IInputReader input)
{
var result = this.parser.Parse(input);
if (result.IsSuccess)
{
return(result);
}
return(ParseResult.Error <T>(input, msgFunc, result.FromError()));
}
public IEither <TResult, ParseError> Parse(IInputReader input)
{
var result = this.parser.Parse(input);
if (result.IsError)
{
return(ParseResult.Error <TResult>(result.FromError()));
}
return(ParseResult.Success(this.func(result.FromSuccess())));
}
public IEither <char, ParseError> Parse(IInputReader input)
{
if (input.EndOfStream)
{
return(ParseResult.Error <char>(input, "Unexpected end of input"));
}
char c = input.Read();
return(ParseResult.Success(c));
}
public void CantConvertParseResultBackToInsertIntoStatementWhenResultIsNotSuccesful()
{
// Arrange
var parseResult = ParseResult.Error <string, string>("Some error");
// Act
var actual = Parsers.InsertQueryParser.InsertQueryParser.ToInsertIntoString(parseResult, "Tabel");
// Assert
actual.Should().Be("Error: Parse result was not successful. Error messages: Some error");
}
/// <summary>
/// Constructs a parser, that takes a single element from the input stream.
/// </summary>
/// <typeparam name="TItem">The item type of the stream.</typeparam>
/// <returns>A new parser, that takes a single element from the input stream, if there is any.</returns>
public static Parser <TItem, TItem> Item <TItem>() =>
(stream, offset) =>
{
if (stream.TryLookAhead(offset, out var item))
{
return(ParseResult.Ok(item, offset + 1, null));
}
// TODO: Better error info?
else
{
return(ParseResult.Error("item", null, offset, string.Empty));
}
};
protected override bool OnParse(ParseResult result, bool errorPass)
{
var next = result.Peek(_inner, errorPass);
var success = next.Success;
if (success)
{
result.Apply(next, errorPass);
}
else
{
result.Error(next, errorPass, false);
}
return(success);
}
public IEither <string, ParseError> Parse(IInputReader input)
{
for (int i = 0; i < str.Length; i++)
{
this.predicateParser.Predicate = str[i].Equals;
var result = this.parser.Parse(input);
if (result.IsError)
{
return(ParseResult.Error <string>(result.FromError()));
}
}
return(ParseResult.Success(this.str));
}
public static ParseResult <string, object> Parse(string formatString, IEnumerable <object> args)
{
if (string.IsNullOrWhiteSpace(formatString))
{
return(ParseResult.Error <string, object>("Format string is empty"));
}
var state = new StringFormatParserState(args);
foreach (var character in formatString)
{
if (character == '{')
{
state.BeginPlaceholder();
if (state.OpenBracketCount > 1)
{
return(ParseResult.Error <string, object>("Too many opening brackets found"));
}
else
{
state.ClearCurrentSection();
}
}
else if (character == '}')
{
state.EndPlaceholder();
if (state.OpenBracketCount < 0)
{
return(ParseResult.Error <string, object>("Too many close brackets found"));
}
else
{
state.ProcessCurrentSection();
}
}
else if (character != '\r' && character != '\n' && character != '\t')
{
state.CurrentSection.Append(character);
}
}
state.AddWarningsForMissingPlaceholders();
//important: sort the placeholders! (i.e. Hello {1} {0} --> {0}, {1})
state.SortPlaceholders();
return(state.GetResult());
}
public ProcessResult Process(InsertQueryParserState state)
{
if (state.ColumnNames.Count > 0 &&
state.ColumnValues.Count < state.ColumnNames.Count)
{
var result = ParseResult.Error
(
$"Column names count ({state.ColumnNames.Count}) is not equal to column values count ({state.ColumnValues.Count}), see #MISSING# in column values list (values)",
state.ColumnNames.Zip(state.ColumnValues, (name, value) => new KeyValuePair <string, string>(name.Trim(), value.Trim()))
);
state.ColumnValues.AddRange(Enumerable.Range(1, state.ColumnNames.Count - state.ColumnValues.Count).Select(_ => "#MISSING#"));
return(ProcessResult.Fail(result));
}
return(ProcessResult.NotUnderstood());
}
protected override ParseResult Parse(ArraySegment <byte> data)
{
InitializeHttpReader(false);
int headerLength = httpReader.Parse(data.Array, data.Offset, data.Count);
if (httpReader.IsFinal)
{
return(ParseResult.HeaderDone(headerLength, httpReader.HasContentLength ? httpReader.ContentLength : 0));
}
if (httpReader.IsError)
{
return(ParseResult.Error());
}
return(ParseResult.NotEnoughData());
}
public IEither <IEnumerable <T>, ParseError> Parse(IInputReader input)
{
List <T> acc = new List <T>(parsers.Count());
foreach (IParser <T> parser in parsers)
{
IEither <T, ParseError> result = parser.Parse(input);
if (result.IsSuccess)
{
acc.Add(result.FromSuccess());
}
else
{
return(ParseResult.Error <IEnumerable <T> >(result.FromError()));
}
}
return(ParseResult.Success(acc));
}
public static ParseResult <string, object> ParseWithArgumentsString(string formatString, string argumentsString)
{
if (string.IsNullOrWhiteSpace(argumentsString))
{
return(ParseResult.Error <string, object>("Arguments string is empty"));
}
var currentSection = new StringBuilder();
var inValue = false;
var arguments = new List <string>();
foreach (var character in argumentsString)
{
if (character == ',' && !inValue)
{
arguments.Add(currentSection.ToString().Trim());
currentSection.Clear();
}
else if (character == '"' && !inValue)
{
inValue = true;
currentSection.Append(character);
}
else if (character == '"' && inValue)
{
inValue = false;
currentSection.Append(character);
}
else if (inValue || (character != '\r' && character != '\n' && character != '\t'))
{
currentSection.Append(character);
}
}
if (currentSection.Length > 0)
{
arguments.Add(currentSection.ToString().Trim());
currentSection.Clear();
}
return(Parse(formatString, arguments.ToArray()));
}
private ParseResult SkipKeepAlive(ArraySegment <byte> data)
{
int processed;
for (processed = 0; keepAliveCount < 4 && processed < data.Count; processed++)
{
if (IsKeepAliveByte(data.Array[data.Offset + processed], keepAliveCount) == false)
{
return(ParseResult.Error());
}
keepAliveCount++;
}
if (keepAliveCount == 4)
{
keepAliveCount = 0;
}
return(ParseResult.Skip(processed));
}
public ParseResult <string, object> GetResult()
{
if (FormatValueCountUnequalToFormatPlaceholderCount)
{
var result = ParseResult.Error(ValidationErrors.Concat(new[] { $"Format values count ({FormatValues.Count}) is not equal to column placeholders count ({FormatPlaceholders.Count}), see #MISSING# in format placeholders list (keys)" }), FormatPlaceholders.Zip(FormatValues, (name, value) => new KeyValuePair <string, object>(name, value)));
FormatPlaceholders.AddRange(Enumerable.Range(1, FormatValues.Count - FormatPlaceholders.Count).Select(_ => "#MISSING#"));
return(result);
}
else if (FormatPlaceholderCountUnequalToFormatValueCount)
{
var result = ParseResult.Error(ValidationErrors.Concat(new[] { $"Format placeholders count ({FormatPlaceholders.Count}) is not equal to column values count ({FormatValues.Count}), see #MISSING# in format values list (values)" }), FormatPlaceholders.Zip(FormatValues, (name, value) => new KeyValuePair <string, object>(name, value)));
FormatValues.AddRange(Enumerable.Range(1, FormatPlaceholders.Count - FormatValues.Count).Select(_ => "#MISSING#"));
return(result);
}
else if (FormatPlaceholders.Count == 0)
{
return(ParseResult.Error(ValidationErrors.Concat(new[] { "No format placeholders were found" }), Array.Empty <KeyValuePair <string, object> >()));
}
return(ParseResult.Create(ValidationErrors.Count == 0, FormatPlaceholders.Zip(FormatValues, (name, value) => new KeyValuePair <string, object>(name, value)), ValidationErrors));
}
public IEither <TResult, ParseError> Parse(IInputReader input)
{
TAccum acc = this.seed();
IEither <T, ParseError> result = null;
Position position = input.GetPosition();
while ((result = this.parser.Parse(input)).IsSuccess)
{
acc = this.func(acc, result.FromSuccess());
position = input.GetPosition();
}
if (input.GetPosition() == position)
{
return(ParseResult.Success(this.resultSelector(acc)));
}
else
{
return(ParseResult.Error <TResult>(result.FromError()));
}
}
protected override ParseResult Parse(ArraySegment <byte> data)
{
switch (mode)
{
case Modes.Sip:
{
if (keepAliveCount != 0)
{
return(SkipKeepAlive(data));
}
else
{
var sipReader = SipReader.GetEmpty();
int headerLength = sipReader.Parse(data.Array, data.Offset, data.Count);
if (sipReader.IsFinal)
{
return(ParseResult.HeaderDone(headerLength, sipReader.HasContentLength ? sipReader.ContentLength : 0));
}
if (sipReader.IsError)
{
if (IsKeepAliveByte(data.Array[data.Offset], 0))
{
return(SkipKeepAlive(data));
}
else
{
mode = Modes.Http;
goto case Modes.Http;
}
}
return(ParseResult.NotEnoughData());
}
}
case Modes.Http:
{
var httpReader = HttpReaderx.GetEmpty();
httpHeaderLength = httpReader.Parse(data.Array, data.Offset, data.Count);
if (httpReader.IsFinal)
{
httpContentLength = httpReader.HasContentLength ? httpReader.ContentLength : 0;
if (AjaxWebsocket.IsAjax(httpReader, data.Array))
{
mode = Modes.Ajax;
goto case Modes.Ajax;
}
return(ParseResult.HeaderDone(httpHeaderLength, httpContentLength));
}
if (httpReader.IsError)
{
return(ParseResult.Error());
}
return(ParseResult.NotEnoughData());
}
case Modes.WebSocket:
{
if (wsWaitHeader)
{
int used = wsHeader.Parse(data);
if (wsHeader.IsDone)
{
wsWaitHeader = false;
}
return(ParseResult.Skip(used));
}
else
{
if (IsSipWebSocket == false)
{
return(ParseResult.HeaderDone(0, wsHeader.PayloadLength));
}
else
{
var sipReader = SipReader.GetEmpty();
int headerLength = sipReader.Parse(data.Array, data.Offset, data.Count);
if (sipReader.IsFinal)
{
return(ParseResult.HeaderDone(headerLength, sipReader.HasContentLength ? sipReader.ContentLength : 0));
}
if (sipReader.IsError)
{
return(ParseResult.Error());
}
return(ParseResult.NotEnoughData());
}
}
}
case Modes.Ajax:
{
if (httpContentLength > 0)
{
if (httpHeaderLength < data.Count)
{
var sipReader = SipReader.GetEmpty();
int sipHeaderLength = sipReader.Parse(data.Array, data.Offset + httpHeaderLength, data.Count - httpHeaderLength);
if (sipReader.IsFinal)
{
return(ParseResult.HeaderDone(httpHeaderLength + sipHeaderLength, sipReader.HasContentLength ? sipReader.ContentLength : 0));
}
if (sipReader.IsError || httpContentLength <= data.Count - httpHeaderLength)
{
return(ParseResult.Error());
}
}
HttpReaderx.Invalidate();
return(ParseResult.NotEnoughData());
}
else
{
return(ParseResult.HeaderDone(httpHeaderLength, 0));
}
}
default:
throw new NotImplementedException();
}
}
internal static ProcessResult Fail(string errorMessage) => new ProcessResult(true, ParseResult.Error <string, string>(errorMessage));
public IEither <T, ParseError> Parse(IInputReader input)
{
return(ParseResult.Error <T>(input, this.message));
}
