/// <summary>
/// Realiza a leitura.
/// </summary>
/// <remarks>
/// Se a leitura não for bem-sucedida, os erros de leitura serão registados no diário
/// e será retornado o objecto por defeito.
/// </remarks>
/// <param name="symbolListToParse">O vector de símbolos a ser lido.</param>
/// <param name="errorLogs">O objecto que irá manter o registo do diário da leitura.</param>
/// <returns>O valor lido.</returns>
public Fraction <T> Parse(
ISymbol <string, string>[] symbolListToParse,
ILogStatus <string, EParseErrorLevel> errorLogs)
{
var innerErrors = new LogStatus <string, EParseErrorLevel>();
var parsedElement = this.elementParser.Parse(symbolListToParse, innerErrors);
foreach (var kvp in innerErrors.GetLogs())
{
errorLogs.AddLog(kvp.Value, kvp.Key);
}
if (innerErrors.HasLogs(EParseErrorLevel.ERROR))
{
return(default(Fraction <T>));
}
else
{
return(new Fraction <T>(parsedElement, this.domain.MultiplicativeUnity, this.domain));
}
}
/// <summary>
/// Realiza a leitura.
/// </summary>
/// <remarks>
/// Se a leitura não for bem-sucedida, os erros de leitura serão registados no diário
/// e será retornado o objecto por defeito.
/// </remarks>
/// <param name="symbolListToParse">O vector de símbolos a ser lido.</param>
/// <param name="errorLogs">O objecto que irá manter o registo do diário da leitura.</param>
/// <returns>O valor lido.</returns>
public Fraction <ElementType> Parse(
ISymbol <string, string>[] symbolListToParse,
ILogStatus <string, EParseErrorLevel> errorLogs)
{
var innerErrorLog = new LogStatus <string, EParseErrorLevel>();
var parsed = this.elementParser.Parse(symbolListToParse, innerErrorLog);
if (innerErrorLog.HasLogs(EParseErrorLevel.ERROR))
{
foreach (var message in innerErrorLog.GetLogs(EParseErrorLevel.ERROR))
{
errorLogs.AddLog(message, EParseErrorLevel.ERROR);
}
return(default(Fraction <ElementType>));
}
else
{
return(new Fraction <ElementType>(parsed, this.domain.MultiplicativeUnity, this.domain));
}
}
/// <summary>
/// Realiza a leitura.
/// </summary>
/// <remarks>
/// Se a leitura não for bem-sucedida, os erros de leitura serão registados no diário
/// e será retornado o objecto por defeito.
/// </remarks>
/// <param name="symbolListToParse">O vector de símbolos a ser lido.</param>
/// <param name="errorLogs">O objecto que irá manter o registo do diário da leitura.</param>
/// <returns>O valor lido.</returns>
public HashSet <ObjectType> Parse(
ISymbol <string, ESymbolSetType>[] symbolListToParse,
ILogStatus <string, EParseErrorLevel> errorLogs)
{
var value = default(HashSet <ObjectType>);
var innerError = new LogStatus <string, EParseErrorLevel>();
var parsedObject = this.elementsParser.Parse(symbolListToParse, innerError);
if (!innerError.HasLogs(EParseErrorLevel.ERROR))
{
value = new HashSet <ObjectType>();
value.Add(parsedObject);
}
foreach (var kvp in innerError.GetLogs())
{
errorLogs.AddLog(kvp.Value, kvp.Key);
}
return(value);
}
/// <summary>
/// Estado da leitura do valor - estado 4.
/// </summary>
/// <param name="reader">O leitor de símbolos.</param>
/// <returns>O próximo estado.</returns>
private IState <string, string> ValueState(ISymbolReader <string, string> reader)
{
this.IgnoreVoids(reader);
var readed = reader.Get();
if (reader.IsAtEOF())
{
throw new OdmpProblemException("Unexpected end of file.");
}
this.currentReadingValues.Clear();
if (this.elementsDelimiterTypes.ContainsKey(readed.SymbolType))
{
this.ProcessDelimiteres(readed, reader);
}
else if (readed.SymbolType == "left_parenthesis")
{
this.ProcessInnerParenthesis(readed, reader);
}
else
{
this.currentReadingValues.Add(readed);
}
var error = new LogStatus <string, EParseErrorLevel>();
var value = this.objectElementsReader.Parse(this.currentReadingValues.ToArray(), error);
if (error.HasLogs(EParseErrorLevel.ERROR))
{
throw new OdmpProblemException(string.Format("Can't parse value {0}.", readed.SymbolValue));
}
this.SetValueInMatrixSet(this.componentCoord, this.lineCoord, this.columnCoord, value);
this.coordState = 0;
return(this.states[2]);
}
/// <summary>
/// Tenta fazer a leitura da expressão.
/// </summary>
/// <param name="reader">O leitor de símbolos.</param>
/// <param name="errors">A lista que irá receber os erros.</param>
/// <param name="element">O elemento lido.</param>
/// <returns>Verdadeiro caso a leitura seja bem-sucedida e falso caso contrário.</returns>
public bool TryParsePolynomial(
MementoSymbolReader <InputReader, string, string> reader,
ILogStatus <string, EParseErrorLevel> errors,
out ObjectType element)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
else
{
var expressionReader = new ExpressionReader <ObjectType, string, string>(
this.objectParser);
expressionReader.RegisterBinaryOperator("plus", Add, 0);
expressionReader.RegisterBinaryOperator("times", Multiply, 1);
expressionReader.RegisterBinaryOperator("minus", Subtract, 0);
expressionReader.RegisterBinaryOperator("hat", Power, 2);
expressionReader.RegisterUnaryOperator("minus", Symmetric, 0);
expressionReader.RegisterBinaryOperator("over", Divide, 1);
if (this.expressionDelimiterTypes.Any())
{
foreach (var expressionDelimiterKvp in this.expressionDelimiterTypes)
{
foreach (var closeDelimiter in expressionDelimiterKvp.Value)
{
expressionReader.RegisterExpressionDelimiterTypes(
expressionDelimiterKvp.Key,
closeDelimiter);
}
}
}
else
{
expressionReader.RegisterExpressionDelimiterTypes("left_parenthesis", "right_parenthesis");
}
expressionReader.RegisterSequenceDelimiterTypes("left_parenthesis", "right_parenthesis");
foreach (var kvp in this.externalDelimitersTypes)
{
foreach (var delimiter in kvp.Value)
{
expressionReader.RegisterExternalDelimiterTypes(kvp.Key, delimiter);
}
}
expressionReader.AddVoid("blancks");
expressionReader.AddVoid("space");
expressionReader.AddVoid("carriage_return");
expressionReader.AddVoid("new_line");
var innerErrors = new LogStatus <string, EParseErrorLevel>();
element = expressionReader.Parse(reader, innerErrors);
foreach (var kvp in innerErrors.GetLogs())
{
errors.AddLog(kvp.Value, kvp.Key);
}
if (innerErrors.HasLogs(EParseErrorLevel.ERROR))
{
return(false);
}
else
{
return(true);
}
}
}
/// <summary>
/// Estado de leitura das coordenadas - estado 3.
/// </summary>
/// <param name="reader">O leitor de símbolos.</param>
/// <returns>O próximo estado.</returns>
private IState <string, string> InsideParenthesisState(ISymbolReader <string, string> reader)
{
this.IgnoreVoids(reader);
var readed = reader.Get();
if (reader.IsAtEOF())
{
throw new OdmpProblemException("Unexpected end of file.");
}
this.currentReadingValues.Clear();
if (readed.SymbolType == "right_parenthesis")
{
if (this.coordState != 3)
{
throw new OdmpProblemException(string.Format(
"Wrong number, {0}, of coordinates. Expecting 3.",
this.coordState));
}
this.coordState = 0;
return(this.states[4]);
}
else if (readed.SymbolType == "left_parenthesis")
{
this.ProcessInnerParenthesis(readed, reader);
}
else if (this.elementsDelimiterTypes.ContainsKey(readed.SymbolType))
{
this.ProcessDelimiteres(readed, reader);
}
else
{
this.currentReadingValues.Add(readed);
}
var error = new LogStatus <string, EParseErrorLevel>();
switch (this.coordState)
{
case 0:
this.componentCoord = this.componentElementsReader.Parse(this.currentReadingValues.ToArray(), error);
if (error.HasLogs(EParseErrorLevel.ERROR))
{
throw new OdmpProblemException(string.Format("Can't parse component coordinate: {0}.", readed.SymbolValue));
}
break;
case 1:
this.lineCoord = this.lineElementsReader.Parse(this.currentReadingValues.ToArray(), error);
if (error.HasLogs(EParseErrorLevel.ERROR))
{
throw new OdmpProblemException(string.Format("Can't parse line coordinate: {0}.", readed.SymbolValue));
}
break;
case 2:
this.columnCoord = this.columnElementsReader.Parse(this.currentReadingValues.ToArray(), error);
if (error.HasLogs(EParseErrorLevel.ERROR))
{
throw new OdmpProblemException(string.Format("Can't parse column coordinate: {0}.", readed.SymbolValue));
}
break;
default:
throw new OdmpProblemException("An internal error has occured.");
}
++this.coordState;
return(this.states[3]);
}
/// <summary>
/// Realiza a leitura.
/// </summary>
/// <remarks>
/// Se a leitura não for bem-sucedida, os erros de leitura serão registados no diário
/// e será retornado o objecto por defeito.
/// </remarks>
/// <param name="symbolListToParse">O vector de símbolos a ser lido.</param>
/// <param name="errorLogs">O objecto que irá manter o registo do diário da leitura.</param>
/// <returns>O valor lido.</returns>
public ParsePolynomialItem <CoeffType> Parse(
ISymbol <string, string>[] symbolListToParse,
ILogStatus <string, EParseErrorLevel> errorLogs)
{
var pol = default(ParsePolynomialItem <CoeffType>);
var innerError = new LogStatus <string, EParseErrorLevel>();
var parsedCoeff = this.coeffParser.Parse(symbolListToParse, innerError);
if (innerError.HasLogs(EParseErrorLevel.ERROR))
{
if (symbolListToParse.Length == 1)
{
var stringValue = symbolListToParse[0].SymbolValue;
if (string.IsNullOrWhiteSpace(stringValue))
{
errorLogs.AddLog(
"Variable name can't be empty.",
EParseErrorLevel.ERROR);
}
else if (char.IsLetter(stringValue[0]))
{
pol = new ParsePolynomialItem <CoeffType>();
pol.Polynomial = new Polynomial <CoeffType>(this.coeffRing.MultiplicativeUnity, stringValue, this.coeffRing);
}
else
{
var degreeError = new LogStatus <string, EParseErrorLevel>();
var integerValue = this.integerParser.Parse(symbolListToParse, degreeError);
if (!degreeError.HasLogs(EParseErrorLevel.ERROR))
{
pol = new ParsePolynomialItem <CoeffType>();
pol.Degree = integerValue;
}
this.CopyErrors(degreeError, errorLogs);
}
}
else
{
var degreeError = new LogStatus <string, EParseErrorLevel>();
var integerValue = this.integerParser.Parse(symbolListToParse, degreeError);
if (!degreeError.HasLogs(EParseErrorLevel.ERROR))
{
pol = new ParsePolynomialItem <CoeffType>();
pol.Degree = integerValue;
}
this.CopyErrors(degreeError, errorLogs);
}
}
else
{
pol = new ParsePolynomialItem <CoeffType>();
pol.Coeff = parsedCoeff;
// Poderão existir avisos
this.CopyErrors(innerError, errorLogs);
}
return(pol);
}
/// <summary>
/// Realiza a leitura.
/// </summary>
/// <remarks>
/// Se a leitura não for bem-sucedida, os erros de leitura serão registados no diário
/// e será retornado o objecto por defeito.
/// </remarks>
/// <param name="symbolListToParse">O vector de símbolos a ser lido.</param>
/// <param name="errorLogs">O objecto que irá manter o registo do diário da leitura.</param>
/// <returns>O valor lido.</returns>
public ParseUnivarPolynomNormalFormItem <CoeffType> Parse(
ISymbol <string, string>[] symbolListToParse,
ILogStatus <string, EParseErrorLevel> errorLogs)
{
var pol = default(ParseUnivarPolynomNormalFormItem <CoeffType>);
if (symbolListToParse.Length == 1)
{
var stringValue = symbolListToParse[0].SymbolValue;
if (string.IsNullOrWhiteSpace(stringValue))
{
errorLogs.AddLog(
"The variable name can't be null nor empty.",
EParseErrorLevel.ERROR);
}
else if (char.IsLetter(stringValue[0]))
{
if (stringValue == this.variableName)
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Polynomial = new UnivariatePolynomialNormalForm <CoeffType>(
this.coeffRing.MultiplicativeUnity,
1,
stringValue,
this.coeffRing);
}
else
{
var coeffError = new LogStatus <string, EParseErrorLevel>();
var parsedCoeff = this.coeffParser.Parse(symbolListToParse, coeffError);
if (!coeffError.HasLogs(EParseErrorLevel.ERROR))
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Coeff = parsedCoeff;
}
// Poderão existir avisos.
this.CopyLogs(coeffError, errorLogs);
}
}
else
{
var coeffError = new LogStatus <string, EParseErrorLevel>();
var parsedCoeff = this.coeffParser.Parse(symbolListToParse, coeffError);
if (coeffError.HasLogs(EParseErrorLevel.ERROR))
{
var degreeError = new LogStatus <string, EParseErrorLevel>();
var integerValue = this.integerParser.Parse(symbolListToParse, degreeError);
if (degreeError.HasLogs(EParseErrorLevel.ERROR))
{
this.CopyLogs(coeffError, errorLogs);
}
else
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Degree = integerValue;
// Poderão existir avisos
this.CopyLogs(degreeError, errorLogs);
}
}
else
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Coeff = parsedCoeff;
// Poderão existir avisos.
this.CopyLogs(coeffError, errorLogs);
}
}
}
else
{
var coeffError = new LogStatus <string, EParseErrorLevel>();
var parsedCoeff = this.coeffParser.Parse(symbolListToParse, coeffError);
if (coeffError.HasLogs(EParseErrorLevel.ERROR))
{
var degreeError = new LogStatus <string, EParseErrorLevel>();
var integerValue = this.integerParser.Parse(symbolListToParse, degreeError);
if (degreeError.HasLogs(EParseErrorLevel.ERROR))
{
this.CopyLogs(coeffError, errorLogs);
}
else
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Degree = integerValue;
// Poderão existir avisos
this.CopyLogs(degreeError, errorLogs);
}
}
else
{
pol = new ParseUnivarPolynomNormalFormItem <CoeffType>();
pol.Coeff = parsedCoeff;
// Poderão existir avisos.
this.CopyLogs(coeffError, errorLogs);
}
}
return(pol);
}
/// <summary>
/// Efectua a leitura de um polinómio.
/// </summary>
/// <param name="polynomialReader">A cadeia de carácteres que contém o polinómimo.</param>
/// <param name="conversion">O conversor entre o tipo de coeficiente e um inteiro.</param>
/// <param name="errors">A lista de errros encontrados.</param>
/// <param name="resultPolynomial">O polinómio lido.</param>
/// <returns>Verdadeiro caso a leitura seja bem sucedida e falso caso contrário.</returns>
/// <exception cref="ArgumentNullException">Se o leitor de símbolos ou conversor forem nulos.</exception>
public bool TryParsePolynomial(
MementoSymbolReader <InputReader, string, string> polynomialReader,
IConversion <int, T> conversion,
ILogStatus <string, EParseErrorLevel> errors,
out Polynomial <T> resultPolynomial)
{
if (polynomialReader == null)
{
throw new ArgumentNullException("polynomialReader");
}
if (conversion == null)
{
throw new ArgumentNullException("conversion");
}
this.conversion = conversion;
resultPolynomial = default(Polynomial <T>);
var expressionReader = new ExpressionReader <ParsePolynomialItem <T>, string, string>(
new SimplePolynomialReader <T>(this.coeffParser, this.ring));
expressionReader.RegisterBinaryOperator("plus", Add, 0);
expressionReader.RegisterBinaryOperator("times", Multiply, 1);
expressionReader.RegisterBinaryOperator("minus", Subtract, 0);
expressionReader.RegisterBinaryOperator("hat", Power, 2);
expressionReader.RegisterUnaryOperator("minus", Symmetric, 0);
expressionReader.RegisterExpressionDelimiterTypes("left_parenthesis", "right_parenthesis");
expressionReader.RegisterSequenceDelimiterTypes("left_parenthesis", "right_parenthesis");
foreach (var kvp in this.externalDelimitersTypes)
{
foreach (var delimiter in kvp.Value)
{
expressionReader.RegisterExternalDelimiterTypes(kvp.Key, delimiter);
}
}
expressionReader.AddVoid("space");
expressionReader.AddVoid("carriage_return");
expressionReader.AddVoid("new_line");
var innerErrors = new LogStatus <string, EParseErrorLevel>();
var expressionResult = expressionReader.Parse(polynomialReader, innerErrors);
if (innerErrors.HasLogs(EParseErrorLevel.ERROR))
{
if (errors != null)
{
foreach (var message in innerErrors.GetLogs(EParseErrorLevel.ERROR))
{
errors.AddLog(message, EParseErrorLevel.ERROR);
}
}
return(false);
}
else
{
if (expressionResult.ValueType == EParsePolynomialValueType.COEFFICIENT)
{
resultPolynomial = new Polynomial <T>(expressionResult.Coeff, this.ring);
return(true);
}
else if (expressionResult.ValueType == EParsePolynomialValueType.INTEGER)
{
if (typeof(T).IsAssignableFrom(typeof(int)))
{
resultPolynomial = new Polynomial <T>((T)(object)expressionResult.Degree, this.ring);
return(true);
}
else
{
return(false);
}
}
else if (expressionResult.ValueType == EParsePolynomialValueType.POLYNOMIAL)
{
resultPolynomial = expressionResult.Polynomial;
return(true);
}
else
{
if (errors != null)
{
errors.AddLog("Severe error.", EParseErrorLevel.ERROR);
}
return(false);
}
}
}