Exemple #1
0
        /// <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;
        }