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//
// $Id$
//
//
// Original author: Matt Chambers <matt.chambers .@. vanderbilt.edu>
//
// Copyright 2008 Spielberg Family Center for Applied Proteomics
// Cedars Sinai Medical Center, Los Angeles, California 90048
// Copyright 2008 Vanderbilt University - Nashville, TN 37232
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef _OPTIMIZED_LEXICAL_CAST_HPP_
#define _OPTIMIZED_LEXICAL_CAST_HPP_
#include <cstdlib>
#include <cerrno>
#include <boost/lexical_cast.hpp>
#include <boost/logic/tribool.hpp>
// HACK: Darwin strtod isn't threadsafe so strtod_l must be used
#ifdef __APPLE__
#include <xlocale.h>
#include "pwiz/utility/misc/Singleton.hpp"
namespace {
class ThreadSafeCLocale : public boost::singleton<ThreadSafeCLocale>
{
public:
ThreadSafeCLocale(boost::restricted) : c_locale(::newlocale(LC_ALL_MASK, "C", 0)) {}
~ThreadSafeCLocale() {::freelocale(c_locale);}
::locale_t c_locale;
};
} // namespace
#define STRTOD(x, y) strtod_l((x), (y), ThreadSafeCLocale::instance->c_locale)
#define ATOF(x) STRTOD(x,NULL)
#else // __APPLE__
#define STRTOD(x, y) strtod((x), (y))
#define ATOF(x) atof(x)
#endif // __APPLE__
#define OPTIMIZED_LEXICAL_CAST(toType) \
template<> inline toType lexical_cast(const std::string& str) { \
bool success; \
toType value = lexical_cast<toType>(str, success); \
if (!success) \
throw bad_lexical_cast(); \
return value; \
}
// optimized string->numeric conversions
namespace boost
{
template <typename toType>
inline toType lexical_cast(const std::string& str, bool& success)
{
// error: new overload needed below
throw std::logic_error("BUG: new overload needed");
}
template <>
inline float lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
float value = (float) STRTOD( stringToConvert, const_cast<char**>(&endOfConversion) );
if( value == 0.0f && stringToConvert == endOfConversion ) // error: conversion could not be performed
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(float)
template <>
inline double lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
double value = STRTOD( stringToConvert, const_cast<char**>(&endOfConversion) );
if( value == 0.0 && stringToConvert == endOfConversion ) // error: conversion could not be performed
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(double)
template <>
inline int lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
int value = (int) strtol( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0 && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(int)
template <>
inline long lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
long value = strtol( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0l && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(long)
template <>
inline unsigned int lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
unsigned int value = (unsigned int) strtoul( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0u && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(unsigned int)
template <>
inline unsigned long lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
unsigned long value = strtoul( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0ul && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(unsigned long)
template <>
inline long long lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
long long value = strtoll( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if ((value == 0ll && stringToConvert == endOfConversion) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(long long)
template <>
inline unsigned long long lexical_cast( const std::string& str, bool& success )
{
errno = 0;
success = true;
const char* stringToConvert = str.c_str();
const char* endOfConversion = stringToConvert;
unsigned long long value = strtoull( stringToConvert, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0ull && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
success = false;
return value;
}
OPTIMIZED_LEXICAL_CAST(unsigned long long)
template<>
inline bool lexical_cast( const std::string& str )
{
if (str == "0" || str == "false")
return false;
return true;
}
template<>
inline boost::logic::tribool lexical_cast( const std::string& str )
{
using namespace boost::logic;
if (str.empty())
return tribool(indeterminate);
if (str == "0" || str == "false")
return false;
return true;
}
/*template<>
inline float lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
float value = (float) STRTOD( str, const_cast<char**>(&endOfConversion) );
if( ( value == 0.0f && str == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
template<>
inline double lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
double value = STRTOD( str, const_cast<char**>(&endOfConversion) );
if( ( value == 0.0 && str == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
template<>
inline int lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
int value = (int) strtol( str, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0 && str == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
template<>
inline long lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
long value = strtol( str, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0l && str == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
template<>
inline unsigned int lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
unsigned int value = (unsigned int) strtoul( str, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0u && str == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
template<>
inline unsigned long lexical_cast( const char*& str )
{
errno = 0;
const char* endOfConversion = str;
unsigned long value = strtoul( str, const_cast<char**>(&endOfConversion), 0 );
if( ( value == 0ul && stringToConvert == endOfConversion ) || // error: conversion could not be performed
errno != 0 ) // error: overflow or underflow
throw bad_lexical_cast();//throw bad_lexical_cast( std::type_info( str ), std::type_info( value ) );
return value;
}
*/
} // boost
#endif // _OPTIMIZED_LEXICAL_CAST_HPP_
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