/* * Copyright 2010-2011 PathScale, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _LINUX_TYPEINFO_ #define _LINUX_TYPEINFO_ #include #include "exception" namespace __cxxabiv1 { struct __class_type_info; } namespace std { /** * Standard type info class. The layout of this class is specified by the * ABI. The layout of the vtable is not, but is intended to be * compatible with the GNU ABI. * * Unlike the GNU version, the vtable layout is considered semi-private. */ class type_info { public: /** * Virtual destructor. This class must have one virtual function to * ensure that it has a vtable. */ virtual ~type_info(); bool operator==(const type_info &) const; bool operator!=(const type_info &) const; bool before(const type_info &) const; const char* name() const; type_info(); private: type_info(const type_info& rhs); type_info& operator= (const type_info& rhs); const char *__type_name; /* * The following functions are in this order to match the * vtable layout of libsupc++. This allows libcxxrt to be used * with libraries that depend on this. * * These functions are in the public headers for libstdc++, so * we have to assume that someone will probably call them and * expect them to work. Their names must also match the names used in * libsupc++, so that code linking against this library can subclass * type_info and correctly fill in the values in the vtables. */ public: /** * Returns true if this is some pointer type, false otherwise. */ virtual bool __is_pointer_p() const { return false; } /** * Returns true if this is some function type, false otherwise. */ virtual bool __is_function_p() const { return false; } /** * Catch function. Allows external libraries to implement * their own basic types. This is used, for example, in the * GNUstep Objective-C runtime to allow Objective-C types to be * caught in G++ catch blocks. * * The outer parameter indicates the number of outer pointers * in the high bits. The low bit indicates whether the * pointers are const qualified. */ virtual bool __do_catch(const type_info *thrown_type, void **thrown_object, unsigned outer) const; /** * Performs an upcast. This is used in exception handling to * cast from subclasses to superclasses. If the upcast is * possible, it returns true and adjusts the pointer. If the * upcast is not possible, it returns false and does not adjust * the pointer. */ virtual bool __do_upcast( const __cxxabiv1::__class_type_info *target, void **thrown_object) const { (void)target, (void)thrown_object; return false; } }; /** * Bad cast exception. Thrown by the __cxa_bad_cast() helper function. */ class bad_cast: public exception { public: bad_cast() throw(); bad_cast(const bad_cast&) throw(); bad_cast& operator=(const bad_cast&) throw(); virtual ~bad_cast(); virtual const char* what() const throw(); }; /** * Bad typeidexception. Thrown by the __cxa_bad_typeid() helper function. */ class bad_typeid: public exception { public: bad_typeid() throw(); bad_typeid(const bad_typeid &__rhs) throw(); virtual ~bad_typeid(); bad_typeid& operator=(const bad_typeid &__rhs) throw(); virtual const char* what() const throw(); }; class bad_array_new_length: public bad_alloc { public: bad_array_new_length() throw(); bad_array_new_length(const bad_array_new_length&) throw(); bad_array_new_length& operator=(const bad_array_new_length&) throw(); virtual ~bad_array_new_length(); virtual const char *what() const throw(); }; } #endif /* _LINUX_TYPEINFO_ */