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131 lines
2.8 KiB
C++
131 lines
2.8 KiB
C++
//===---------------------- system_error.cpp ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This was lifted from libc++ and modified for C++03.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/system_error.h"
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#include "llvm/Support/Errno.h"
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#include <string>
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#include <cstring>
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namespace llvm {
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// class error_category
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error_category::error_category() {
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}
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error_category::~error_category() {
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}
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error_condition
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error_category::default_error_condition(int ev) const {
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return error_condition(ev, *this);
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}
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bool
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error_category::equivalent(int code, const error_condition& condition) const {
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return default_error_condition(code) == condition;
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}
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bool
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error_category::equivalent(const error_code& code, int condition) const {
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return *this == code.category() && code.value() == condition;
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}
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std::string
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_do_message::message(int ev) const {
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return std::string(sys::StrError(ev));
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}
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class _generic_error_category : public _do_message {
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public:
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virtual const char* name() const;
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virtual std::string message(int ev) const;
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};
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const char*
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_generic_error_category::name() const {
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return "generic";
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}
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std::string
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_generic_error_category::message(int ev) const {
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#ifdef ELAST
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if (ev > ELAST)
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return std::string("unspecified generic_category error");
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#endif // ELAST
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return _do_message::message(ev);
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}
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const error_category&
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generic_category() {
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static _generic_error_category s;
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return s;
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}
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class _system_error_category : public _do_message {
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public:
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virtual const char* name() const;
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virtual std::string message(int ev) const;
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virtual error_condition default_error_condition(int ev) const;
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};
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const char*
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_system_error_category::name() const {
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return "system";
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}
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// std::string _system_error_category::message(int ev) const {
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// Is in Platform/system_error.inc
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// error_condition _system_error_category::default_error_condition(int ev) const
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// Is in Platform/system_error.inc
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const error_category&
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system_category() {
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static _system_error_category s;
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return s;
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}
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const error_category&
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posix_category() {
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#ifdef LLVM_ON_WIN32
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return generic_category();
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#else
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return system_category();
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#endif
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}
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// error_condition
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std::string
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error_condition::message() const {
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return _cat_->message(_val_);
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}
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// error_code
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std::string
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error_code::message() const {
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return _cat_->message(_val_);
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}
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} // end namespace llvm
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// Include the truly platform-specific parts of this class.
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#if defined(LLVM_ON_UNIX)
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#include "Unix/system_error.inc"
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#endif
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#if defined(LLVM_ON_WIN32)
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#include "Windows/system_error.inc"
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#endif
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