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Support for string with non-default char_traits and allocator.

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[SVN r41387]
This commit is contained in:
Alexander Nasonov
2007-11-25 23:08:50 +00:00
parent 159b045ad7
commit 05036d3ae1
2 changed files with 375 additions and 130 deletions
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260
include/boost/lexical_cast.hpp
View File

@ -86,6 +86,14 @@ namespace boost
typedef char type;
};
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<class CharT, class Traits, class Alloc>
struct stream_char< std::basic_string<CharT,Traits,Alloc> >
{
typedef CharT type;
};
#endif
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
template<>
@ -107,11 +115,13 @@ namespace boost
typedef wchar_t type;
};
#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<>
struct stream_char<std::wstring>
{
typedef wchar_t type;
};
#endif
#endif
template<typename TargetChar, typename SourceChar>
@ -127,6 +137,44 @@ namespace boost
};
}
namespace detail // deduce_char_traits template
{
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<class CharT, class Target, class Source>
struct deduce_char_traits
{
typedef std::char_traits<CharT> type;
};
template<class CharT, class Traits, class Alloc, class Source>
struct deduce_char_traits< CharT
, std::basic_string<CharT,Traits,Alloc>
, Source
>
{
typedef Traits type;
};
template<class CharT, class Target, class Traits, class Alloc>
struct deduce_char_traits< CharT
, Target
, std::basic_string<CharT,Traits,Alloc>
>
{
typedef Traits type;
};
template<class CharT, class Traits, class Alloc1, class Alloc2>
struct deduce_char_traits< CharT
, std::basic_string<CharT,Traits,Alloc1>
, std::basic_string<CharT,Traits,Alloc2>
>
{
typedef Traits type;
};
#endif
}
namespace detail // lcast_src_length
{
// Return max. length of string representation of Source;
@ -309,8 +357,6 @@ namespace boost
#undef BOOST_AUX_LEXICAL_CAST_DEF1
#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
// This #if is in sync with lcast_precision
// Helper for floating point types.
// -1.23456789e-123456
// ^ sign
@ -450,9 +496,7 @@ namespace boost
namespace detail // lcast_put_unsigned
{
// I'd personally put lcast_put_unsigned in .cpp file if not
// boost practice for header-only libraries (Alexander Nasonov).
template<typename T, typename CharT>
template<class Traits, class T, class CharT>
CharT* lcast_put_unsigned(T n, CharT* finish)
{
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
@ -482,6 +526,9 @@ namespace boost
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
BOOST_STATIC_ASSERT(std::numeric_limits<T>::digits10 < CHAR_MAX);
#endif
typedef typename Traits::int_type int_type;
CharT const czero = lcast_char_constants<CharT>::zero;
int_type const zero = Traits::to_int_type(czero);
char left = last_grp_size;
@ -498,14 +545,13 @@ namespace boost
left = last_grp_size;
--finish;
*finish = thousands_sep;
Traits::assign(*finish, thousands_sep);
}
--left;
--finish;
int const digit = static_cast<int>(n % 10);
int const cdigit = digit + lcast_char_constants<CharT>::zero;
*finish = static_cast<char>(cdigit);
int_type const digit = static_cast<int_type>(n % 10U);
Traits::assign(*finish, Traits::to_char_type(zero + digit));
n /= 10;
} while(n);
@ -515,7 +561,7 @@ namespace boost
namespace detail // stream wrapper for handling lexical conversions
{
template<typename Target, typename Source>
template<typename Target, typename Source, typename Traits>
class lexical_stream
{
private:
@ -523,6 +569,8 @@ namespace boost
typename stream_char<Target>::type,
typename stream_char<Source>::type>::type char_type;
typedef Traits traits_type;
public:
lexical_stream(char_type* = 0, char_type* = 0)
{
@ -552,9 +600,12 @@ namespace boost
EOF;
#else
std::char_traits<char_type>::eof();
traits_type::eof();
#endif
}
#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
bool operator>>(std::string &output)
{
#if defined(BOOST_NO_STRINGSTREAM)
@ -570,13 +621,29 @@ namespace boost
return true;
}
#endif
#else
bool operator>>(std::basic_string<char_type,traits_type>& output)
{
stream.str().swap(output);
return true;
}
template<class Alloc>
bool operator>>(std::basic_string<char_type,traits_type,Alloc>& out)
{
std::basic_string<char_type,traits_type> str(stream.str());
out.assign(str.begin(), str.end());
return true;
}
#endif
private:
#if defined(BOOST_NO_STRINGSTREAM)
std::strstream stream;
#elif defined(BOOST_NO_STD_LOCALE)
std::stringstream stream;
#else
std::basic_stringstream<char_type> stream;
std::basic_stringstream<char_type,traits_type> stream;
#endif
};
}
@ -586,6 +653,7 @@ namespace boost
// String representation of Source has an upper limit.
template< class CharT // a result of widest_char transformation
, class Base // lexical_streambuf_fake or basic_streambuf<CharT>
, class Traits // usually char_traits<CharT>
>
class lexical_stream_limited_src : public Base
{
@ -599,19 +667,20 @@ namespace boost
static void widen_and_assign(char*p, char ch)
{
*p = ch;
Traits::assign(*p, ch);
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
static void widen_and_assign(wchar_t* p, char ch)
{
std::locale loc;
*p = BOOST_USE_FACET(std::ctype<wchar_t>, loc).widen(ch);
wchar_t w = BOOST_USE_FACET(std::ctype<wchar_t>, loc).widen(ch);
Traits::assign(*p, w);
}
static void widen_and_assign(wchar_t* p, wchar_t ch)
{
*p = ch;
Traits::assign(*p, ch);
}
static void widen_and_assign(char*, wchar_t ch); // undefined
@ -641,8 +710,8 @@ namespace boost
public: // output
template<class Traits, class Alloc>
bool operator<<(std::basic_string<CharT, Traits, Alloc> const& str)
template<class Alloc>
bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str)
{
start = const_cast<CharT*>(str.data());
finish = start + str.length();
@ -705,7 +774,7 @@ namespace boost
EOF;
#else
std::char_traits<CharT>::eof();
Traits::eof();
#endif
}
@ -721,7 +790,7 @@ namespace boost
#endif
#else
template<class Traits, class Alloc>
template<class Alloc>
bool operator>>(std::basic_string<CharT,Traits,Alloc>& str)
{
str.assign(start, finish);
@ -730,17 +799,21 @@ namespace boost
#endif
};
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
bool value)
{
*start = value + lcast_char_constants<CharT>::zero;
typedef typename Traits::int_type int_type;
CharT const czero = lcast_char_constants<CharT>::zero;
int_type const zero = Traits::to_int_type(czero);
Traits::assign(*start, Traits::to_char_type(zero + value));
finish = start + 1;
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(char ch)
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
char ch)
{
widen_and_assign(start, ch);
finish = start + 1;
@ -748,8 +821,8 @@ namespace boost
}
#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
wchar_t ch)
{
widen_and_assign(start, ch);
@ -758,140 +831,163 @@ namespace boost
}
#endif
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(short n)
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
short n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
if(n < 0)
*--start = lcast_char_constants<CharT>::minus;
{
--start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*start, minus);
}
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(int n)
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
int n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
if(n < 0)
*--start = lcast_char_constants<CharT>::minus;
{
--start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*start, minus);
}
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(long n)
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
long n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
if(n < 0)
*--start = lcast_char_constants<CharT>::minus;
{
--start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*start, minus);
}
return true;
}
#if defined(BOOST_HAS_LONG_LONG)
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
boost::long_long_type n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
if(n < 0)
*--start = lcast_char_constants<CharT>::minus;
{
--start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*start, minus);
}
return true;
}
#elif defined(BOOST_HAS_MS_INT64)
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
__int64 n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
if(n < 0)
*--start = lcast_char_constants<CharT>::minus;
{
--start;
CharT const minus = lcast_char_constants<CharT>::minus;
Traits::assign(*start, minus);
}
return true;
}
#endif
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
unsigned short n)
{
start = lcast_put_unsigned(lcast_to_unsigned(n), finish);
start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
unsigned int n)
{
start = lcast_put_unsigned(n, finish);
start = lcast_put_unsigned<Traits>(n, finish);
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
unsigned long n)
{
start = lcast_put_unsigned(n, finish);
start = lcast_put_unsigned<Traits>(n, finish);
return true;
}
#if defined(BOOST_HAS_LONG_LONG)
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
boost::ulong_long_type n)
{
start = lcast_put_unsigned(n, finish);
start = lcast_put_unsigned<Traits>(n, finish);
return true;
}
#elif defined(BOOST_HAS_MS_INT64)
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
unsigned __int64 n)
{
start = lcast_put_unsigned(n, finish);
start = lcast_put_unsigned<Traits>(n, finish);
return true;
}
#endif
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
float val)
{
return this->lcast_put(val);
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
double val)
{
return this->lcast_put(val);
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
long double val)
{
return this->lcast_put(val);
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator<<(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
CharT const* str)
{
start = const_cast<CharT*>(str);
finish = start + std::char_traits<CharT>::length(str);
finish = start + Traits::length(str);
return true;
}
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator>>(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>(
CharT& output)
{
bool const ok = (finish - start == 1);
if(ok)
output = *start;
Traits::assign(output, *start);
return ok;
}
#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator>>(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>(
std::string& str)
{
str.assign(start, finish);
@ -899,8 +995,8 @@ namespace boost
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
template<typename CharT, class Base>
inline bool lexical_stream_limited_src<CharT,Base>::operator>>(
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>(
std::wstring& str)
{
str.assign(start, finish);
@ -1021,6 +1117,12 @@ namespace boost
BOOST_DEDUCED_TYPENAME boost::call_traits<Source>::param_type arg,
CharT* buf, std::size_t src_len)
{
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
typedef BOOST_DEDUCED_TYPENAME
deduce_char_traits<CharT,Target,Source>::type traits;
#else
typedef std::char_traits<CharT> traits;
#endif
typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
lcast_streambuf_for_target<Target>::value ||
lcast_streambuf_for_source<Source>::value
@ -1030,8 +1132,8 @@ namespace boost
BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
Unlimited
, detail::lexical_stream<Target, Source>
, detail::lexical_stream_limited_src<CharT,base>
, detail::lexical_stream<Target,Source,traits>
, detail::lexical_stream_limited_src<CharT,base,traits>
>::type interpreter(buf, buf + src_len);
// The original form, reproduced below, is more elegant

245
lexical_cast_test.cpp
View File

@ -24,6 +24,9 @@
#include <boost/test/unit_test.hpp>
#include <boost/test/floating_point_comparison.hpp>
#include <string>
#include <memory>
#if defined(BOOST_NO_STRINGSTREAM) || \
defined(BOOST_NO_STD_WSTRING) || \
defined(BOOST_NO_STD_LOCALE)
@ -35,6 +38,16 @@
#define LCAST_TEST_LONGLONG
#endif
template<class CharT>
struct my_traits : std::char_traits<CharT>
{
};
template<class CharT>
struct my_allocator : std::allocator<CharT>
{
};
// Test all 65536 values if true:
bool const lcast_test_small_integral_types_completely = false;
@ -57,15 +70,21 @@ void test_conversion_from_wstring();
void test_conversion_to_wstring();
void test_bad_lexical_cast();
void test_no_whitespace_stripping();
void test_conversion_from_short();
void test_conversion_from_ushort();
void test_conversion_from_int();
void test_conversion_from_uint();
void test_conversion_from_long();
void test_conversion_from_ulong();
void test_conversion_from_to_short();
void test_conversion_from_to_ushort();
void test_conversion_from_to_int();
void test_conversion_from_to_uint();
void test_conversion_from_to_long();
void test_conversion_from_to_ulong();
#ifdef LCAST_TEST_LONGLONG
void test_conversion_from_longlong();
void test_conversion_from_ulonglong();
void test_conversion_from_to_longlong();
void test_conversion_from_to_ulonglong();
#endif
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
void test_traits();
void test_wtraits();
void test_allocator();
void test_wallocator();
#endif
unit_test::test_suite *init_unit_test_suite(int, char *[])
@ -87,15 +106,21 @@ unit_test::test_suite *init_unit_test_suite(int, char *[])
#endif
suite->add(BOOST_TEST_CASE(test_bad_lexical_cast));
suite->add(BOOST_TEST_CASE(test_no_whitespace_stripping));
suite->add(BOOST_TEST_CASE(&test_conversion_from_short));
suite->add(BOOST_TEST_CASE(&test_conversion_from_ushort));
suite->add(BOOST_TEST_CASE(&test_conversion_from_int));
suite->add(BOOST_TEST_CASE(&test_conversion_from_uint));
suite->add(BOOST_TEST_CASE(&test_conversion_from_ulong));
suite->add(BOOST_TEST_CASE(&test_conversion_from_long));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_short));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ushort));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_int));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_uint));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ulong));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_long));
#ifdef LCAST_TEST_LONGLONG
suite->add(BOOST_TEST_CASE(&test_conversion_from_longlong));
suite->add(BOOST_TEST_CASE(&test_conversion_from_ulonglong));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_longlong));
suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ulonglong));
#endif
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
suite->add(BOOST_TEST_CASE(&test_traits));
suite->add(BOOST_TEST_CASE(&test_wtraits));
suite->add(BOOST_TEST_CASE(&test_allocator));
suite->add(BOOST_TEST_CASE(&test_wallocator));
#endif
return suite;
@ -129,10 +154,15 @@ void test_conversion_to_int()
BOOST_CHECK_EQUAL(0, lexical_cast<int>('0'));
BOOST_CHECK_THROW(lexical_cast<int>('A'), bad_lexical_cast);
BOOST_CHECK_EQUAL(1, lexical_cast<int>(1));
BOOST_CHECK_EQUAL(1, lexical_cast<int>(1.0));
BOOST_CHECK_EQUAL(
(std::numeric_limits<int>::max)(),
lexical_cast<int>((std::numeric_limits<int>::max)()));
BOOST_CHECK_EQUAL(1, lexical_cast<int>(1.0));
BOOST_CHECK_EQUAL(
(std::numeric_limits<int>::min)(),
lexical_cast<int>((std::numeric_limits<int>::min)()));
BOOST_CHECK_THROW(lexical_cast<int>(1.23), bad_lexical_cast);
@ -407,7 +437,7 @@ void test_conversion_from_integral_to_char(CharT zero)
BOOST_CHECK_THROW(lexical_cast<CharT>(static_cast<T>(10)), bad_lexical_cast);
T t = std::numeric_limits<T>::max();
T t = (std::numeric_limits<T>::max)();
BOOST_CHECK_THROW(lexical_cast<CharT>(t), bad_lexical_cast);
}
@ -427,10 +457,10 @@ void test_conversion_from_integral_to_integral()
BOOST_CHECK(lexical_cast<long>(t) == st);
BOOST_CHECK(lexical_cast<unsigned long>(t) == ut);
t = std::numeric_limits<T>::max();
t = (std::numeric_limits<T>::max)();
BOOST_CHECK(lexical_cast<T>(t) == t);
t = std::numeric_limits<T>::min();
t = (std::numeric_limits<T>::min)();
BOOST_CHECK(lexical_cast<T>(t) == t);
}
@ -442,19 +472,20 @@ void test_conversion_from_integral_to_string(CharT)
T t;
t = limits::min();
t = (limits::min)();
BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
t = limits::max();
t = (limits::max)();
BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
for(t = 1 + limits::min(); t != limits::max(); ++t)
// min and max have already been tested.
for(t = 1 + (limits::min)(); t != (limits::max)(); ++t)
BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
else
{
T const min_val = limits::min();
T const max_val = limits::max();
T const min_val = (limits::min)();
T const max_val = (limits::max)();
T const half_max_val = max_val / 2;
T const cnt = lcast_integral_test_counter; // to supress warnings
unsigned int const counter = cnt < half_max_val ? cnt : half_max_val;
@ -480,20 +511,75 @@ void test_conversion_from_integral_to_string(CharT)
T ten_power = 100;
for(int e = 2; e <= limits::digits10; ++e, ten_power *= 10)
{
// I believe that (ten_power + 100) never overflows
// ten_power + 100 probably never overflows
for(t = ten_power - 100; t != ten_power + 100; ++t)
BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
}
}
}
template<class T, class CharT>
void test_conversion_from_string_to_integral(CharT)
{
typedef std::numeric_limits<T> limits;
T t;
t = (limits::min)();
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
t = (limits::max)();
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
// min and max have already been tested.
for(t = 1 + (limits::min)(); t != (limits::max)(); ++t)
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
else
{
T const min_val = (limits::min)();
T const max_val = (limits::max)();
T const half_max_val = max_val / 2;
T const cnt = lcast_integral_test_counter; // to supress warnings
unsigned int const counter = cnt < half_max_val ? cnt : half_max_val;
unsigned int i;
// Test values around min:
t = min_val;
for(i = 0; i < counter; ++i, ++t)
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around max:
t = max_val;
for(i = 0; i < counter; ++i, --t)
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around zero:
if(limits::is_signed)
for(t = -counter; t < static_cast<T>(counter); ++t)
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
// Test values around 100, 1000, 10000, ...
T ten_power = 100;
for(int e = 2; e <= limits::digits10; ++e, ten_power *= 10)
{
// ten_power + 100 probably never overflows
for(t = ten_power - 100; t != ten_power + 100; ++t)
BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
}
}
}
template<class T>
void test_conversion_from_integral_for_locale()
void test_conversion_from_to_integral_for_locale()
{
test_conversion_from_integral_to_integral<T>();
test_conversion_from_integral_to_string<T>('0');
test_conversion_from_string_to_integral<T>('0');
#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
test_conversion_from_integral_to_string<T>(L'0');
test_conversion_from_string_to_integral<T>(L'0');
#endif
}
@ -504,7 +590,7 @@ struct restore_oldloc
};
template<class T>
void test_conversion_from_integral()
void test_conversion_from_to_integral()
{
char const zero = '0';
signed char const szero = '0';
@ -517,7 +603,7 @@ void test_conversion_from_integral()
test_conversion_from_integral_to_char<T>(wzero);
#endif
// test_conversion_from_integral_for_locale
// test_conversion_from_to_integral_for_locale
typedef std::numpunct<char> numpunct;
@ -527,7 +613,7 @@ void test_conversion_from_integral()
std::string grouping1 = BOOST_USE_FACET(numpunct, oldloc).grouping();
std::string grouping2(grouping1);
test_conversion_from_integral_for_locale<T>();
test_conversion_from_to_integral_for_locale<T>();
try
{
@ -544,64 +630,121 @@ void test_conversion_from_integral()
}
if(grouping1 != grouping2)
test_conversion_from_integral_for_locale<T>();
test_conversion_from_to_integral_for_locale<T>();
if(grouping1.empty() && grouping2.empty())
BOOST_TEST_MESSAGE("Formatting with thousands_sep has not been tested");
}
void test_conversion_from_short()
void test_conversion_from_to_short()
{
test_conversion_from_integral<short>();
test_conversion_from_to_integral<short>();
}
void test_conversion_from_ushort()
void test_conversion_from_to_ushort()
{
test_conversion_from_integral<unsigned short>();
test_conversion_from_to_integral<unsigned short>();
}
void test_conversion_from_int()
void test_conversion_from_to_int()
{
test_conversion_from_integral<int>();
test_conversion_from_to_integral<int>();
}
void test_conversion_from_uint()
void test_conversion_from_to_uint()
{
test_conversion_from_integral<unsigned int>();
test_conversion_from_to_integral<unsigned int>();
}
void test_conversion_from_ulong()
void test_conversion_from_to_ulong()
{
test_conversion_from_integral<unsigned long>();
test_conversion_from_to_integral<unsigned long>();
}
void test_conversion_from_long()
void test_conversion_from_to_long()
{
test_conversion_from_integral<long>();
test_conversion_from_to_integral<long>();
}
#if defined(BOOST_HAS_LONG_LONG)
void test_conversion_from_longlong()
void test_conversion_from_to_longlong()
{
test_conversion_from_integral<boost::long_long_type>();
test_conversion_from_to_integral<boost::long_long_type>();
}
void test_conversion_from_ulonglong()
void test_conversion_from_to_ulonglong()
{
test_conversion_from_integral<boost::ulong_long_type>();
test_conversion_from_to_integral<boost::ulong_long_type>();
}
#elif defined(LCAST_TEST_LONGLONG)
void test_conversion_from_longlong()
void test_conversion_from_to_longlong()
{
test_conversion_from_integral<__int64>();
test_conversion_from_to_integral<__int64>();
}
void test_conversion_from_ulonglong()
void test_conversion_from_to_ulonglong()
{
test_conversion_from_integral<unsigned __int64>();
test_conversion_from_to_integral<unsigned __int64>();
}
#endif
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
void test_traits()
{
typedef std::basic_string<char, my_traits<char> > my_string;
my_string const s("s");
BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(-1) == "-1");
}
void test_wtraits()
{
typedef std::basic_string<wchar_t, my_traits<wchar_t> > my_string;
my_string const s(L"s");
BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
//BOOST_CHECK(boost::lexical_cast<my_string>(-1) == L"-1");
// Commented out because gcc 3.3 doesn't support this:
// basic_ostream<wchar_t, my_traits<wchar_t> > o; o << -1;
}
void test_allocator()
{
typedef std::basic_string< char
, std::char_traits<char>
, my_allocator<char>
> my_string;
my_string s("s");
BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<std::string>(s) == "s");
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(1) == "1");
BOOST_CHECK(boost::lexical_cast<my_string>("s") == s);
BOOST_CHECK(boost::lexical_cast<my_string>(std::string("s")) == s);
}
void test_wallocator()
{
typedef std::basic_string< wchar_t
, std::char_traits<wchar_t>
, my_allocator<wchar_t>
> my_string;
my_string s(L"s");
BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
BOOST_CHECK(boost::lexical_cast<std::wstring>(s) == L"s");
BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
BOOST_CHECK(boost::lexical_cast<my_string>(1) == L"1");
BOOST_CHECK(boost::lexical_cast<my_string>(L"s") == s);
BOOST_CHECK(boost::lexical_cast<my_string>(std::wstring(L"s")) == s);
}
#endif