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128 lines
4.8 KiB
C++
128 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sw=4 et tw=99 ft=cpp:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Code.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* NB: This header must be both valid C and C++. It must be
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* include-able by code embedding SpiderMonkey *and* Gecko.
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*/
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#ifndef mozilla_Types_h_
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#define mozilla_Types_h_
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/*
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* mfbt is logically "lower level" than js/src, but needs basic
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* definitions of numerical types and macros for compiler/linker
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* directives. js/src already goes through some pain to provide them
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* on numerous platforms, so instead of moving all that goop here,
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* this header makes use of the fact that for the foreseeable future
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* mfbt code will be part and parcel with libmozjs, static or not.
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*
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* For now, the policy is to use jstypes definitions but add a layer
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* of indirection on top of them in case a Great Refactoring ever
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* happens.
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*/
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#include "jstypes.h"
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/*
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* The numerical types provided by jstypes.h that are allowed within
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* mfbt code are
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*
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* stddef types: size_t, ptrdiff_t, etc.
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* stdin [sic] types: int8, uint32, etc.
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*
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* stdint types (int8_t etc.), are available for use here, but doing
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* so would change SpiderMonkey's and Gecko's contracts with
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* embedders: stdint types have not yet appeared in public APIs.
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*/
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#define MOZ_EXPORT_API(type_) JS_EXPORT_API(type_)
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#define MOZ_IMPORT_API(type_) JS_IMPORT_API(type_)
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/*
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* mfbt definitions need to see export declarations when built, but
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* other code needs to see import declarations when using mfbt.
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*/
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#if defined(IMPL_MFBT)
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# define MFBT_API(type_) MOZ_EXPORT_API(type_)
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#else
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# define MFBT_API(type_) MOZ_IMPORT_API(type_)
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#endif
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#define MOZ_BEGIN_EXTERN_C JS_BEGIN_EXTERN_C
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#define MOZ_END_EXTERN_C JS_END_EXTERN_C
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#ifdef __cplusplus
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/*
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* MOZ_DELETE, specified immediately prior to the ';' terminating an undefined-
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* method declaration, attempts to delete that method from the corresponding
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* class. An attempt to use the method will produce an error *at link time*,
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* not at compile time, in compilers for which this macro can be implemented.
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* For example, you can use this macro to produce classes with no implicit copy
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* constructor or assignment operator:
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*
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* struct NonCopyable {
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* private:
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* NonCopyable(const NonCopyable& other) MOZ_DELETE;
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* void operator=(const NonCopyable& other) MOZ_DELETE;
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* };
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*
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* If MOZ_DELETE can't be implemented for the current compiler, it will still
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* cause an error, but at link time rather than compile time.
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*
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* MOZ_DELETE relies on C++11 functionality not universally implemented. As a
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* backstop, method declarations using MOZ_DELETE should be private.
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*/
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#if defined(__clang__) && (__clang_major__ >= 3 || (__clang_major__ == 2 && __clang_minor__ >= 9))
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# define MOZ_DELETE = delete
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#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
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/*
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* g++ >= 4.4 supports deleted functions, but it requires -std=c++0x or
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* -std=gnu++0x, and for various reasons we can't use these yet.
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*/
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# define MOZ_DELETE /* = delete */
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#else
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# define MOZ_DELETE /* unknown C++11 deleted function support */
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#endif
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#endif /* __cplusplus */
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#endif /* mozilla_Types_h_ */
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