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Merge system and filesystem branches, bringing them in sync with N2415. Several filesystem bugs fixed, and current_path setter added.

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[SVN r39173]
This commit is contained in:
Beman Dawes committed 2007-09-09 14:59:10 +00:00
1 parent 1656e087bb
commit 04e774f337
12 files changed
+1466 -551
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include/boost/system/system_error.hpp
+32 -39
View File
@@ -17,59 +17,52 @@ namespace boost
{
namespace system
{
enum message_action { append_message, no_message };
// class system_error --------------------------------------------------//
class system_error : public std::runtime_error
{
public:
explicit system_error( error_code ec )
: std::runtime_error(std::string()), m_error_code(ec),
m_append_message(true) {}
system_error( error_code ec, const std::string & what_arg,
message_action ma = append_message )
: std::runtime_error(what_arg), m_error_code(ec),
m_append_message(ma==append_message) {}
system_error( error_code::value_type ev, error_category ecat )
: std::runtime_error(std::string()), m_error_code(ev,ecat),
m_append_message(true) {}
system_error( error_code::value_type ev, error_category ecat,
const std::string & what_arg, message_action ma = append_message )
: std::runtime_error(what_arg), m_error_code(ev,ecat),
m_append_message(ma==append_message) {}
system_error( error_code ec )
: std::runtime_error(""), m_error_code(ec) {}
system_error( error_code ec, const std::string & what_arg )
: std::runtime_error(what_arg), m_error_code(ec) {}
system_error( int ev, const error_category & ecat,
const std::string & what_arg )
: std::runtime_error(what_arg), m_error_code(ev,ecat) {}
system_error( int ev, const error_category & ecat )
: std::runtime_error(""), m_error_code(ev,ecat) {}
virtual ~system_error() throw() {}
const error_code & code() const throw() { return m_error_code; }
const char * what() const throw()
// see http://www.boost.org/more/error_handling.html for lazy build rationale
{
if ( !m_error_code || !m_append_message ) return runtime_error::what();
if ( m_what.empty() )
{
try
{
m_what = runtime_error::what();
if ( !m_what.empty() ) m_what += ": ";
m_what += m_error_code.message();
}
catch (...) { return runtime_error::what(); }
}
return m_what.c_str();
}
const error_code & code() const throw() { return m_error_code; }
const char * what() const throw();
private:
error_code m_error_code;
mutable std::string m_what;
bool m_append_message;
};
// implementation ------------------------------------------------------//
inline const char * system_error::what() const throw()
// see http://www.boost.org/more/error_handling.html for lazy build rationale
{
if ( m_what.empty() )
{
try
{
m_what = this->runtime_error::what();
if ( m_error_code )
{
if ( !m_what.empty() ) m_what += ": ";
m_what += m_error_code.message();
}
}
catch (...) { return runtime_error::what(); }
}
return m_what.c_str();
}
} // namespace system
} // namespace boost