feedc0de/boost_conversion
1
0
Fork 0
forked from boostorg/conversion
Code Pull Requests Activity

bcbboost branch rebased on current release

Browse Source 
[SVN r49389]
This commit is contained in:
Nicola Musatti
2008-10-19 14:43:01 +00:00
parent 6202d68105 0c54d6a037
commit 80446f3947
2 changed files with 43 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
include/boost/lexical_cast.hpp
View File

@@ -44,7 +44,7 @@
#if defined(BOOST_NO_STRINGSTREAM) || \
defined(BOOST_NO_STD_WSTRING) || \
defined(BOOST_NO_STD_LOCALE)
#define DISABLE_WIDE_CHAR_SUPPORT
#define BOOST_LCAST_NO_WCHAR_T
#endif
namespace boost
@@ -106,7 +106,7 @@ namespace boost
};
#endif
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
template<>
struct stream_char<wchar_t>
@@ -231,7 +231,7 @@ namespace boost
// lcast_src_length<char, signed char const*>
// lcast_src_length<char, unsigned char const*>
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_src_length<wchar_t, bool>
{
@@ -270,7 +270,7 @@ namespace boost
static void check_coverage() {}
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_src_length<wchar_t, wchar_t const*>
{
@@ -301,7 +301,7 @@ namespace boost
static void check_coverage() {}
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_src_length< wchar_t, std::basic_string<wchar_t> >
{
@@ -339,34 +339,35 @@ namespace boost
#endif
};
#define BOOST_AUX_LEXICAL_CAST_DEF1(CharT, T) template<> \
struct lcast_src_length<CharT, T> : lcast_src_length_integral<T> \
#define BOOST_LCAST_DEF1(CharT, T) \
template<> struct lcast_src_length<CharT, T> \
: lcast_src_length_integral<T> \
{ static void check_coverage() {} };
#ifdef DISABLE_WIDE_CHAR_SUPPORT
#define BOOST_AUX_LEXICAL_CAST_DEF(T) BOOST_AUX_LEXICAL_CAST_DEF1(char, T)
#ifdef BOOST_LCAST_NO_WCHAR_T
#define BOOST_LCAST_DEF(T) BOOST_LCAST_DEF1(char, T)
#else
#define BOOST_AUX_LEXICAL_CAST_DEF(T) \
BOOST_AUX_LEXICAL_CAST_DEF1(char, T) \
BOOST_AUX_LEXICAL_CAST_DEF1(wchar_t, T)
#define BOOST_LCAST_DEF(T) \
BOOST_LCAST_DEF1(char, T) \
BOOST_LCAST_DEF1(wchar_t, T)
#endif
BOOST_AUX_LEXICAL_CAST_DEF(short)
BOOST_AUX_LEXICAL_CAST_DEF(unsigned short)
BOOST_AUX_LEXICAL_CAST_DEF(int)
BOOST_AUX_LEXICAL_CAST_DEF(unsigned int)
BOOST_AUX_LEXICAL_CAST_DEF(long)
BOOST_AUX_LEXICAL_CAST_DEF(unsigned long)
BOOST_LCAST_DEF(short)
BOOST_LCAST_DEF(unsigned short)
BOOST_LCAST_DEF(int)
BOOST_LCAST_DEF(unsigned int)
BOOST_LCAST_DEF(long)
BOOST_LCAST_DEF(unsigned long)
#if defined(BOOST_HAS_LONG_LONG)
BOOST_AUX_LEXICAL_CAST_DEF(boost::ulong_long_type)
BOOST_AUX_LEXICAL_CAST_DEF(boost::long_long_type )
BOOST_LCAST_DEF(boost::ulong_long_type)
BOOST_LCAST_DEF(boost::long_long_type )
#elif defined(BOOST_HAS_MS_INT64)
BOOST_AUX_LEXICAL_CAST_DEF(unsigned __int64)
BOOST_AUX_LEXICAL_CAST_DEF( __int64)
BOOST_LCAST_DEF(unsigned __int64)
BOOST_LCAST_DEF( __int64)
#endif
#undef BOOST_AUX_LEXICAL_CAST_DEF
#undef BOOST_AUX_LEXICAL_CAST_DEF1
#undef BOOST_LCAST_DEF
#undef BOOST_LCAST_DEF1
#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
// Helper for floating point types.
@@ -412,7 +413,7 @@ namespace boost
static void check_coverage() {}
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_src_length<wchar_t,float>
: lcast_src_length_floating<float>
@@ -434,7 +435,7 @@ namespace boost
static void check_coverage() {}
};
#endif // #ifndef DISABLE_WIDE_CHAR_SUPPORT
#endif // #ifndef BOOST_LCAST_NO_WCHAR_T
#endif // #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
}
@@ -449,7 +450,7 @@ namespace boost
BOOST_STATIC_CONSTANT(char, minus = '-');
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_char_constants<wchar_t>
{
@@ -608,7 +609,7 @@ namespace boost
stream.str().swap(output);
return true;
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
bool operator>>(std::wstring &output)
{
stream.str().swap(output);
@@ -664,7 +665,7 @@ namespace boost
Traits::assign(*p, ch);
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
static void widen_and_assign(wchar_t* p, char ch)
{
// TODO: use BOOST_NO_STD_LOCALE
@@ -698,9 +699,9 @@ namespace boost
public:
lexical_stream_limited_src(CharT* start, CharT* finish)
: start(start)
, finish(finish)
lexical_stream_limited_src(CharT* sta, CharT* fin)
: start(sta)
, finish(fin)
{}
public: // output
@@ -715,7 +716,7 @@ namespace boost
bool operator<<(bool);
bool operator<<(char);
#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
bool operator<<(wchar_t);
#endif
bool operator<<(CharT const*);
@@ -780,7 +781,7 @@ namespace boost
bool operator>>(std::string&);
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
bool operator>>(std::wstring&);
#endif
@@ -815,7 +816,7 @@ namespace boost
return true;
}
#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator<<(
wchar_t ch)
@@ -989,7 +990,7 @@ namespace boost
return true;
}
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<typename CharT, class Base, class Traits>
inline bool lexical_stream_limited_src<CharT,Base,Traits>::operator>>(
std::wstring& str)
@@ -1044,7 +1045,7 @@ namespace boost
BOOST_STATIC_CONSTANT(bool, value = false);
};
#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
template<>
struct lcast_streambuf_for_target<wchar_t>
{
@@ -1060,7 +1061,7 @@ namespace boost
BOOST_STATIC_CONSTANT(bool, value = false);
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<class Traits, class Alloc>
struct lcast_streambuf_for_target<
std::basic_string<wchar_t,Traits,Alloc> >
@@ -1075,7 +1076,7 @@ namespace boost
BOOST_STATIC_CONSTANT(bool, value = false);
};
#ifndef DISABLE_WIDE_CHAR_SUPPORT
#ifndef BOOST_LCAST_NO_WCHAR_T
template<>
struct lcast_streambuf_for_target<std::wstring>
{
@@ -1196,5 +1197,5 @@ namespace boost
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#undef DISABLE_WIDE_CHAR_SUPPORT
#undef BOOST_LCAST_NO_WCHAR_T
#endif

15
lexical_cast.htm
View File

@@ -194,18 +194,7 @@ public:
</pre>
</blockquote>Exception used to indicate runtime <a href="#lexical_cast"><code>lexical_cast</code></a>
failure.
<hr>
<h2><a name="BOOST_LEXICAL_CAST_ASSUME_C_LOCALE"><code>BOOST_LEXICAL_CAST_ASSUME_C_LOCALE</code></a></h2>
<blockquote><pre>#define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
or,
g++ -DBOOST_LEXICAL_CAST_ASSUME_C_LOCALE ... (gcc on Linux/Unix)
cl.exe /DBOOST_LEXICAL_CAST_ASSUME_C_LOCALE ... (Visual C++ on Windows)
</pre>
Eliminate an overhead of <code>std::locale</code> if your program runs in the "C" locale. If the option is set but a program runs in other locale, <code>lexical_cast</code> result is unspecified.
<hr>
<hr>
<h2><a name="faq">Frequently Asked Questions</h2>
<p> Q: Why does <code>lexical_cast&lt;int8_t&gt;("127")</code> throw <code>bad_lexical_cast</code>?
@@ -230,7 +219,7 @@ Eliminate an overhead of <code>std::locale</code> if your program runs in the "C
<a name="n1973"></a><li> [N1973] Kevlin Henney, Beman Dawes, Lexical Conversion Library Proposal for TR2,
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1973.html">N1973</a>.
<a name="tuning"></a><li> [Tuning] Alexander Nasonov, Fine Tuning for lexical_cast,
<a href="http://accu.org/index.php/journals/1375">Overload #74</a> (<a href="http://www.accu.org/var/uploads/journals/overload74.pdf">PDF</a>),
<a href="http://www.accu.org/var/uploads/journals/overload74.pdf">Overload #74</a>,
August 2006.</li>
</ul>
<h2><a name="changes">Changes</a></h2>