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NumberParser.h

//
// NumberParser.h
//
// $Id: //poco/1.3/Foundation/include/Poco/NumberParser.h#2 $
//
// Library: Foundation
// Package: Core
// Module:  NumberParser
//
// Definition of the NumberParser class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#ifndef Foundation_NumberParser_INCLUDED
#define Foundation_NumberParser_INCLUDED


#include "Poco/Foundation.h"


namespace Poco {


00049 class Foundation_API NumberParser
      /// The NumberParser class provides static methods
      /// for parsing numbers out of strings.
{
public:
      static int parse(const std::string& s);
            /// Parses an integer value in decimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in decimal notation.
      
      static bool tryParse(const std::string& s, int& value);
            /// Parses an integer value in decimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 
      
      static unsigned parseUnsigned(const std::string& s);
            /// Parses an unsigned integer value in decimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in decimal notation.

      static bool tryParseUnsigned(const std::string& s, unsigned& value);
            /// Parses an unsigned integer value in decimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 

      static unsigned parseHex(const std::string& s);
            /// Parses an integer value in hexadecimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in
            /// hexadecimal notation.

      static bool tryParseHex(const std::string& s, unsigned& value);
            /// Parses an unsigned integer value in hexadecimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 

#if defined(POCO_HAVE_INT64)

      static Int64 parse64(const std::string& s);
            /// Parses a 64-bit integer value in decimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in decimal notation.

      static bool tryParse64(const std::string& s, Int64& value);
            /// Parses a 64-bit integer value in decimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 

      static UInt64 parseUnsigned64(const std::string& s);
            /// Parses an unsigned 64-bit integer value in decimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in decimal notation.

      static bool tryParseUnsigned64(const std::string& s, UInt64& value);
            /// Parses an unsigned 64-bit integer value in decimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 

      static UInt64 parseHex64(const std::string& s);
            /// Parses a 64 bit-integer value in hexadecimal notation from the given string.
            /// Throws a SyntaxException if the string does not hold a number in hexadecimal notation.

      static bool tryParseHex64(const std::string& s, UInt64& value);
            /// Parses an unsigned 64-bit integer value in hexadecimal notation from the given string.
            /// Returns true if a valid integer has been found, false otherwise. 

#endif // defined(POCO_HAVE_INT64)

      static double parseFloat(const std::string& s);
            /// Parses a double value in decimal floating point notation
            /// from the given string. 
            /// Throws a SyntaxException if the string does not hold a floating-point 
            /// number in decimal notation.
            
      static bool tryParseFloat(const std::string& s, double& value);
            /// Parses a double value in decimal floating point notation
            /// from the given string. 
            /// Returns true if a valid floating point number has been found, 
            /// false otherwise. 
};


} // namespace Poco


#endif // Foundation_NumberParser_INCLUDED

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