added isNumeric() to DataType and use this instead of checking typeid(NumberDataType), added isMaster argument to readSymbols() and writeSymbols()

src/lib/ebus/data.cpp

@@ -225,7 +225,6 @@ result_t SingleDataField::create(const string id, const unsigned char length,
 	const PartType partType, int divisor, map<unsigned int, string> values,
 	SingleDataField* &returnField)
 {
-
 	DataType* dataType = DataTypeList::getInstance()->get(id, length==REMAIN_LEN ? 0 : length);
 	if (!dataType) {
 		return RESULT_ERR_NOTFOUND;
@@ -251,14 +250,7 @@ result_t SingleDataField::create(const string id, const unsigned char length,
 			return RESULT_ERR_OUT_OF_RANGE; // invalid length
 		}
 	}
-	if (typeid(*dataType)==typeid(StringDataType)
-	|| typeid(*dataType)==typeid(DateTimeDataType)) {
-		if (divisor != 0 || !values.empty())
-			return RESULT_ERR_INVALID_ARG; // cannot set divisor or values for string field
-		returnField = new SingleDataField(name, comment, unit, (StringDataType*)dataType, partType, byteCount);
-		return RESULT_OK;
-	}
-	if (typeid(*dataType)==typeid(NumberDataType)) {
+	if (dataType->isNumeric()) {
 		NumberDataType* numType = (NumberDataType*)dataType;
 		if (values.empty() && numType->hasFlag(DAY)) {
 			for (unsigned int i = 0; i < sizeof(dayNames) / sizeof(dayNames[0]); i++)
@@ -278,7 +270,11 @@ result_t SingleDataField::create(const string id, const unsigned char length,
 		returnField = new ValueListDataField(name, comment, unit, numType, partType, byteCount, values);
 		return RESULT_OK;
 	}
-	return RESULT_ERR_NOTFOUND;
+	if (divisor != 0 || !values.empty()) {
+		return RESULT_ERR_INVALID_ARG; // cannot set divisor or values for string field
+	}
+	returnField = new SingleDataField(name, comment, unit, (StringDataType*)dataType, partType, byteCount);
+	return RESULT_OK;
 }
 
 void SingleDataField::dump(ostream& output)
@@ -366,7 +362,7 @@ result_t SingleDataField::read(const PartType partType,
 			output << m_name << "=";
 	}
 
-	result_t result = readSymbols(data, offset, output, outputFormat);
+	result_t result = readSymbols(data, m_partType==pt_masterData, offset, output, outputFormat);
 	if (result != RESULT_OK)
 		return result;
 
@@ -407,21 +403,21 @@ result_t SingleDataField::write(istringstream& input,
 	default:
 		return RESULT_ERR_INVALID_PART;
 	}
-	return writeSymbols(input, (const unsigned char)offset, data, length);
+	return writeSymbols(input, (const unsigned char)offset, data, m_partType==pt_masterData, length);
 }
 
-result_t SingleDataField::readSymbols(SymbolString& input,
+result_t SingleDataField::readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset,
 		ostringstream& output, OutputFormat outputFormat)
 {
-	return m_dataType->readSymbols(input, offset, m_length, output, outputFormat);
+	return m_dataType->readSymbols(input, isMaster, offset, m_length, output, outputFormat);
 }
 
 result_t SingleDataField::writeSymbols(istringstream& input,
 	const unsigned char offset,
-	SymbolString& output, unsigned char* usedLength)
+	SymbolString& output, const bool isMaster, unsigned char* usedLength)
 {
-	return m_dataType->writeSymbols(input, offset, m_length, output, usedLength);
+	return m_dataType->writeSymbols(input, offset, m_length, output, isMaster, usedLength);
 }
 
 SingleDataField* SingleDataField::clone()
@@ -436,7 +432,7 @@ result_t SingleDataField::derive(string name, string comment,
 {
 	if (m_partType != pt_any && partType == pt_any)
 		return RESULT_ERR_INVALID_PART; // cannot create a template from a concrete instance
-	bool numeric = typeid(*m_dataType)==typeid(NumberDataType);
+	bool numeric = m_dataType->isNumeric();
 	if (!numeric && (divisor != 0 || !values.empty()))
 		return RESULT_ERR_INVALID_ARG; // cannot set divisor or values for non-numeric field
 	if (name.empty())
@@ -463,7 +459,7 @@ result_t SingleDataField::derive(string name, string comment,
 
 bool SingleDataField::hasField(const char* fieldName, bool numeric)
 {
-	bool numericType = typeid(*m_dataType)==typeid(NumberDataType);
+	bool numericType = m_dataType->isNumeric();
 	return numeric==numericType && (fieldName==NULL || fieldName==m_name);
 }
 
@@ -478,7 +474,7 @@ unsigned char SingleDataField::getLength(PartType partType, unsigned char maxLen
 
 bool SingleDataField::hasFullByteOffset(bool after)
 {
-	if (m_length > 1 || typeid(*m_dataType) != typeid(NumberDataType)) {
+	if (m_length > 1 || !m_dataType->isNumeric()) {
 		return true;
 	}
 	NumberDataType* num = (NumberDataType*)m_dataType;
@@ -540,7 +536,7 @@ void ValueListDataField::dump(ostream& output)
 	dumpString(output, m_comment);
 }
 
-result_t ValueListDataField::readSymbols(SymbolString& input,
+result_t ValueListDataField::readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset,
 		ostringstream& output, OutputFormat outputFormat)
 {
@@ -571,7 +567,7 @@ result_t ValueListDataField::readSymbols(SymbolString& input,
 
 result_t ValueListDataField::writeSymbols(istringstream& input,
 		const unsigned char offset,
-		SymbolString& output, unsigned char* usedLength)
+		SymbolString& output, const bool isMaster, unsigned char* usedLength)
 {
 	NumberDataType* numType = (NumberDataType*)m_dataType;
 	if (isIgnored())

src/lib/ebus/data.h

@@ -261,9 +261,9 @@ public:
 	 * Note: the caller needs to free the created instance.
 	 */
 	static result_t create(const string id, const unsigned char length,
-		const string name, const string comment, const string unit,
-		const PartType partType, int divisor, map<unsigned int, string> values,
-		SingleDataField* &returnField);
+			const string name, const string comment, const string unit,
+			const PartType partType, int divisor, map<unsigned int, string> values,
+			SingleDataField* &returnField);
 
 	/**
 	 * Get the value unit.
@@ -288,9 +288,9 @@ public:
 
 	// @copydoc
 	virtual result_t derive(string name, string comment,
-		string unit, const PartType partType,
-		int divisor, map<unsigned int, string> values,
-		vector<SingleDataField*>& fields);
+			string unit, const PartType partType,
+			int divisor, map<unsigned int, string> values,
+			vector<SingleDataField*>& fields);
 
 	/**
 	 * Get whether this field uses a full byte offset.
@@ -327,26 +327,28 @@ protected:
 	/**
 	 * Internal method for reading the field from a @a SymbolString.
 	 * @param input the unescaped @a SymbolString to read the binary value from.
+	 * @param isMaster whether the @a SymbolString is the master part.
 	 * @param offset the offset in the @a SymbolString.
 	 * @param output the ostringstream to append the formatted value to.
 	 * @param outputFormat the @a OutputFormat options to use.
 	 * @return @a RESULT_OK on success, or an error code.
 	 */
-	virtual result_t readSymbols(SymbolString& input,
-		const unsigned char offset,
-		ostringstream& output, OutputFormat outputFormat);
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
+			const unsigned char offset,
+			ostringstream& output, OutputFormat outputFormat);
 
 	/**
 	 * Internal method for writing the field to a @a SymbolString.
 	 * @param input the @a istringstream to parse the formatted value from.
 	 * @param offset the offset in the @a SymbolString.
 	 * @param output the unescaped @a SymbolString to write the binary value to.
+	 * @param isMaster whether the @a SymbolString is the master part.
 	 * @param usedLength the variable in which to store the used length in bytes, or NULL.
 	 * @return @a RESULT_OK on success, or an error code.
 	 */
 	virtual result_t writeSymbols(istringstream& input,
-		const unsigned char offset,
-		SymbolString& output, unsigned char* usedLength);
+			const unsigned char offset,
+			SymbolString& output, const bool isMaster, unsigned char* usedLength);
 
 protected:
 
@@ -408,14 +410,14 @@ public:
 protected:
 
 	// @copydoc
-	virtual result_t readSymbols(SymbolString& input,
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
 			const unsigned char offset,
 			ostringstream& output, OutputFormat outputFormat);
 
 	// @copydoc
 	virtual result_t writeSymbols(istringstream& input,
 			const unsigned char offset,
-			SymbolString& output, unsigned char* usedLength);
+			SymbolString& output, const bool isMaster, unsigned char* usedLength);
 
 private:
 

src/lib/ebus/datatype.cpp

@@ -140,8 +140,9 @@ result_t StringDataType::readRawValue(SymbolString& input, const unsigned char o
 	return RESULT_EMPTY;
 }
 
-result_t StringDataType::readSymbols(SymbolString& input, const unsigned char baseOffset,
-		const unsigned char length, ostringstream& output, OutputFormat outputFormat)
+result_t StringDataType::readSymbols(SymbolString& input, const bool isMaster,
+		const unsigned char baseOffset, const unsigned char length,
+		ostringstream& output, OutputFormat outputFormat)
 {
 	size_t start = 0, count = length;
 	int incr = 1;
@@ -182,7 +183,7 @@ result_t StringDataType::readSymbols(SymbolString& input, const unsigned char ba
 
 result_t StringDataType::writeSymbols(istringstream& input,
 		unsigned char baseOffset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength)
+		SymbolString& output, const bool isMaster, unsigned char* usedLength)
 {
 	size_t start = 0, count = length;
 	bool remainder = count==REMAIN_LEN && hasFlag(ADJ);
@@ -261,8 +262,9 @@ result_t DateTimeDataType::readRawValue(SymbolString& input, const unsigned char
 	return RESULT_EMPTY;
 }
 
-result_t DateTimeDataType::readSymbols(SymbolString& input, const unsigned char baseOffset,
-		const unsigned char length, ostringstream& output, OutputFormat outputFormat)
+result_t DateTimeDataType::readSymbols(SymbolString& input, const bool isMaster,
+		const unsigned char baseOffset, const unsigned char length,
+		ostringstream& output, OutputFormat outputFormat)
 {
 	size_t start = 0, count = length;
 	int incr = 1;
@@ -365,7 +367,7 @@ result_t DateTimeDataType::readSymbols(SymbolString& input, const unsigned char
 
 result_t DateTimeDataType::writeSymbols(istringstream& input,
 		unsigned char baseOffset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength)
+		SymbolString& output, const bool isMaster, unsigned char* usedLength)
 {
 	size_t start = 0, count = length;
 	bool remainder = count==REMAIN_LEN && hasFlag(ADJ);
@@ -625,7 +627,7 @@ result_t NumberDataType::readRawValue(SymbolString& input,
 	return RESULT_OK;
 }
 
-result_t NumberDataType::readSymbols(SymbolString& input,
+result_t NumberDataType::readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char baseOffset, const unsigned char length,
 		ostringstream& output, OutputFormat outputFormat)
 {
@@ -769,7 +771,7 @@ result_t NumberDataType::writeRawValue(unsigned int value,
 
 result_t NumberDataType::writeSymbols(istringstream& input,
 		const unsigned char baseOffset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength)
+		SymbolString& output, const bool isMaster, unsigned char* usedLength)
 {
 	unsigned int value;
 

src/lib/ebus/datatype.h

@@ -99,6 +99,7 @@ static const unsigned int REQ = 0x40; //!< value may not be NULL
 static const unsigned int HCD = 0x80; //!< binary representation is hex converted to decimal and interpreted as 2 digits (also requires #BCD)
 static const unsigned int EXP = 0x100; //!< exponential numeric representation
 static const unsigned int DAY = 0x200; //!< forced value list defaulting to week days
+static const unsigned int NUM = 0x400; //!< numeric type with base class @a NumberDataType
 
 
 /**
@@ -178,15 +179,20 @@ public:
 	bool hasFlag(const unsigned int flag) const { return (m_flags & flag) != 0; }
 
 	/**
-	 * @return whether this field is ignored.
+	 * @return whether this type is ignored.
 	 */
 	bool isIgnored() const { return hasFlag(IGN); }
 
 	/**
-	 * @return whether this field has an .
+	 * @return whether this type has an adjustable length.
 	 */
 	bool isAdjustableLength() const { return hasFlag(ADJ); }
 
+	/**
+	 * @return whether this field is derived from @a NumberDataType.
+	 */
+	bool isNumeric() const { return hasFlag(NUM); }
+
 	/**
 	 * @return the replacement value (fill-up value for @a StringDataType, no replacement if equal to @a NumberDataType#minValue).
 	 */
@@ -216,13 +222,14 @@ public:
 	/**
 	 * Internal method for reading the field from a @a SymbolString.
 	 * @param input the unescaped @a SymbolString to read the binary value from.
+	 * @param isMaster whether the @a SymbolString is the master part.
 	 * @param offset the offset in the @a SymbolString.
 	 * @param length the number of symbols to read.
 	 * @param output the ostringstream to append the formatted value to.
 	 * @param outputFormat the @a OutputFormat options to use.
 	 * @return @a RESULT_OK on success, or an error code.
 	 */
-	virtual result_t readSymbols(SymbolString& input,
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset, const unsigned char length,
 		ostringstream& output, OutputFormat outputFormat) = 0;
 
@@ -232,12 +239,13 @@ public:
 	 * @param offset the offset in the @a SymbolString.
 	 * @param length the number of symbols to write, or @a REMAIN_LEN.
 	 * @param output the unescaped @a SymbolString to write the binary value to.
+	 * @param isMaster whether the @a SymbolString is the master part.
 	 * @param usedLength the variable in which to store the used length in bytes, or NULL.
 	 * @return @a RESULT_OK on success, or an error code.
 	 */
 	virtual result_t writeSymbols(istringstream& input,
 		const unsigned char offset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength) = 0;
+		SymbolString& output, const bool isMaster, unsigned char* usedLength) = 0;
 
 protected:
 
@@ -286,14 +294,14 @@ public:
 		unsigned int& value);
 
 	// @copydoc
-	virtual result_t readSymbols(SymbolString& input,
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset, const unsigned char length,
 		ostringstream& output, OutputFormat outputFormat);
 
 	// @copydoc
 	virtual result_t writeSymbols(istringstream& input,
 		const unsigned char offset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength);
+		SymbolString& output, const bool isMaster, unsigned char* usedLength);
 
 private:
 
@@ -344,14 +352,14 @@ public:
 		unsigned int& value);
 
 	// @copydoc
-	virtual result_t readSymbols(SymbolString& input,
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset, const unsigned char length,
 		ostringstream& output, OutputFormat outputFormat);
 
 	// @copydoc
 	virtual result_t writeSymbols(istringstream& input,
 		const unsigned char offset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength);
+		SymbolString& output, const bool isMaster, unsigned char* usedLength);
 
 private:
 
@@ -383,7 +391,7 @@ public:
 	 */
 	NumberDataType(const string id, const unsigned char bitCount, const unsigned short flags, const unsigned int replacement,
 			const unsigned int minValue, const unsigned int maxValue, const int divisor)
-		: DataType(id, bitCount, flags, replacement), m_minValue(minValue), m_maxValue(maxValue), m_divisor(divisor), m_precision(calcPrecision(divisor)), m_firstBit(0), m_baseType(NULL) {}
+		: DataType(id, bitCount, flags|NUM, replacement), m_minValue(minValue), m_maxValue(maxValue), m_divisor(divisor), m_precision(calcPrecision(divisor)), m_firstBit(0), m_baseType(NULL) {}
 
 	/**
 	 * Constructs a new instance for less than 8 bits.
@@ -396,7 +404,7 @@ public:
 	 */
 	NumberDataType(const string id, const unsigned char bitCount, const unsigned short flags, const unsigned int replacement,
 			const short firstBit, const int divisor)
-		: DataType(id, bitCount, flags, replacement), m_minValue(0), m_maxValue((1<<bitCount)-1), m_divisor(divisor), m_precision(0), m_firstBit(firstBit), m_baseType(NULL) {}
+		: DataType(id, bitCount, flags|NUM, replacement), m_minValue(0), m_maxValue((1<<bitCount)-1), m_divisor(divisor), m_precision(0), m_firstBit(firstBit), m_baseType(NULL) {}
 
 	/**
 	 * Destructor.
@@ -424,7 +432,7 @@ public:
 	 * not necessary.
 	 * @return @a RESULT_OK on success, or an error code.
 	 */
-	result_t derive(int divisor, unsigned char bitCount, NumberDataType* &derived);
+	virtual result_t derive(int divisor, unsigned char bitCount, NumberDataType* &derived);
 
 	/**
 	 * @return the minimum raw value.
@@ -457,7 +465,7 @@ public:
 		unsigned int& value);
 
 	// @copydoc
-	virtual result_t readSymbols(SymbolString& input,
+	virtual result_t readSymbols(SymbolString& input, const bool isMaster,
 		const unsigned char offset, const unsigned char length,
 		ostringstream& output, OutputFormat outputFormat);
 
@@ -478,7 +486,7 @@ public:
 	// @copydoc
 	virtual result_t writeSymbols(istringstream& input,
 		const unsigned char offset, const unsigned char length,
-		SymbolString& output, unsigned char* usedLength);
+		SymbolString& output, const bool isMaster, unsigned char* usedLength);
 
 private: