/// <summary>
/// Create a Matrix by parsing the file. The MatrixFactory may try many different parsers to get a result.
/// </summary>
/// <param name="filename">The name of the file containing the matrix information.</param>
/// <param name="missingValue">The special value that represents missing in the created matrix.</param>
/// <param name="parallelOptions">A ParallelOptions instance that configures the multithreaded behavior of this operation.</param>
/// <param name="result">The matrix created.</param>
/// <returns>true, if some parse succeeds; otherwise, false</returns>
public bool TryParse(string filename, TValue missingValue, ParallelOptions parallelOptions, out Matrix<TRowKey, TColKey, TValue> result)
{
result = null;
TextWriter origErrorWriter = Console.Error;
MFErrorWriter mfErrorWriter = new MFErrorWriter();
Console.SetError(mfErrorWriter);
if (_registeredParsers.Count == 0 && _builtInParsers.Count == 0) Console.Error.WriteLine("No matching parsers found");
foreach (TryParseMatrixDelegate<TRowKey, TColKey, TValue> ParseFunc in _registeredParsers)
{
mfErrorWriter.SetLabel(ParseFunc.ToString());
if (ParseFunc(filename, missingValue, parallelOptions, out result))
{
ErrorMessages = mfErrorWriter.ToString();
Console.SetError(origErrorWriter);
return true;
}
}
object[] methodParams4 = new object[] { filename, missingValue, parallelOptions, result };
object[] methodParams3 = new object[] { filename, missingValue, result };
foreach (MethodInfo ParseFuncMemberInfo in _builtInParsers)
{
mfErrorWriter.SetLabel(ParseFuncMemberInfo.DeclaringType.Name + "." + ParseFuncMemberInfo.Name);
int argCount = ParseFuncMemberInfo.GetParameters().Length;
Helper.CheckCondition(argCount == 3 || argCount == 4, Properties.Resource.ExpectedArgCountOfThreeOrFour);
object[] methodParams = (3 == argCount) ? methodParams3 : methodParams4;
bool success = (bool)ParseFuncMemberInfo.Invoke(null, methodParams);
if (success)
{
result = (Matrix<TRowKey, TColKey, TValue>)methodParams[argCount - 1];//!!!const
ErrorMessages = mfErrorWriter.ToString();
Console.SetError(origErrorWriter);
return true;
}
}
ErrorMessages = mfErrorWriter.ToString();
Console.SetError(origErrorWriter);
return false;
}