Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Implementations of various class and method modifier attributes. */
#ifndef mozilla_Attributes_h
#define mozilla_Attributes_h
#include "mozilla/Compiler.h"
/*
* MOZ_ALWAYS_INLINE is a macro which expands to tell the compiler that the
* method decorated with it must be inlined, even if the compiler thinks
* otherwise. This is only a (much) stronger version of the inline hint:
* compilers are not guaranteed to respect it (although they're much more likely
* to do so).
*
* The MOZ_ALWAYS_INLINE_EVEN_DEBUG macro is yet stronger. It tells the
* compiler to inline even in DEBUG builds. It should be used very rarely.
*/
#if defined(_MSC_VER)
# define MOZ_ALWAYS_INLINE_EVEN_DEBUG __forceinline
#elif defined(__GNUC__)
# define MOZ_ALWAYS_INLINE_EVEN_DEBUG __attribute__((always_inline)) inline
#else
# define MOZ_ALWAYS_INLINE_EVEN_DEBUG inline
#endif
#if !defined(DEBUG)
# define MOZ_ALWAYS_INLINE MOZ_ALWAYS_INLINE_EVEN_DEBUG
#elif defined(_MSC_VER) && !defined(__cplusplus)
# define MOZ_ALWAYS_INLINE __inline
#else
# define MOZ_ALWAYS_INLINE inline
#endif
#if defined(_MSC_VER)
/*
* g++ requires -std=c++0x or -std=gnu++0x to support C++11 functionality
* without warnings (functionality used by the macros below). These modes are
* detectable by checking whether __GXX_EXPERIMENTAL_CXX0X__ is defined or, more
* standardly, by checking whether __cplusplus has a C++11 or greater value.
* Current versions of g++ do not correctly set __cplusplus, so we check both
* for forward compatibility.
*/
# define MOZ_HAVE_NEVER_INLINE __declspec(noinline)
# define MOZ_HAVE_NORETURN __declspec(noreturn)
#elif defined(__clang__)
/*
* Per Clang documentation, "Note that marketing version numbers should not
* be used to check for language features, as different vendors use different
* numbering schemes. Instead, use the feature checking macros."
*/
# ifndef __has_extension
# define __has_extension __has_feature /* compatibility, for older versions of clang */
# endif
# if __has_attribute(noinline)
# define MOZ_HAVE_NEVER_INLINE __attribute__((noinline))
# endif
# if __has_attribute(noreturn)
# define MOZ_HAVE_NORETURN __attribute__((noreturn))
# endif
#elif defined(__GNUC__)
# define MOZ_HAVE_NEVER_INLINE __attribute__((noinline))
# define MOZ_HAVE_NORETURN __attribute__((noreturn))
#endif
/*
* When built with clang analyzer (a.k.a scan-build), define MOZ_HAVE_NORETURN
* to mark some false positives
*/
#ifdef __clang_analyzer__
# if __has_extension(attribute_analyzer_noreturn)
# define MOZ_HAVE_ANALYZER_NORETURN __attribute__((analyzer_noreturn))
# endif
#endif
/*
* MOZ_NEVER_INLINE is a macro which expands to tell the compiler that the
* method decorated with it must never be inlined, even if the compiler would
* otherwise choose to inline the method. Compilers aren't absolutely
* guaranteed to support this, but most do.
*/
#if defined(MOZ_HAVE_NEVER_INLINE)
# define MOZ_NEVER_INLINE MOZ_HAVE_NEVER_INLINE
#else
# define MOZ_NEVER_INLINE /* no support */
#endif
/*
* MOZ_NORETURN, specified at the start of a function declaration, indicates
* that the given function does not return. (The function definition does not
* need to be annotated.)
*
* MOZ_NORETURN void abort(const char* msg);
*
* This modifier permits the compiler to optimize code assuming a call to such a
* function will never return. It also enables the compiler to avoid spurious
* warnings about not initializing variables, or about any other seemingly-dodgy
* operations performed after the function returns.
*
* This modifier does not affect the corresponding function's linking behavior.
*/
#if defined(MOZ_HAVE_NORETURN)
# define MOZ_NORETURN MOZ_HAVE_NORETURN
#else
# define MOZ_NORETURN /* no support */
#endif
/**
* MOZ_COLD tells the compiler that a function is "cold", meaning infrequently
* executed. This may lead it to optimize for size more aggressively than speed,
* or to allocate the body of the function in a distant part of the text segment
* to help keep it from taking up unnecessary icache when it isn't in use.
*
* Place this attribute at the very beginning of a function definition. For
* example, write
*
* MOZ_COLD int foo();
*
* or
*
* MOZ_COLD int foo() { return 42; }
*/
#if defined(__GNUC__) || defined(__clang__)
# define MOZ_COLD __attribute__ ((cold))
#else
# define MOZ_COLD
#endif
/**
* MOZ_NONNULL tells the compiler that some of the arguments to a function are
* known to be non-null. The arguments are a list of 1-based argument indexes
* identifying arguments which are known to be non-null.
*
* Place this attribute at the very beginning of a function definition. For
* example, write
*
* MOZ_NONNULL(1, 2) int foo(char *p, char *q);
*/
#if defined(__GNUC__) || defined(__clang__)
# define MOZ_NONNULL(...) __attribute__ ((nonnull(__VA_ARGS__)))
#else
# define MOZ_NONNULL(...)
#endif
/*
* MOZ_PRETEND_NORETURN_FOR_STATIC_ANALYSIS, specified at the end of a function
* declaration, indicates that for the purposes of static analysis, this
* function does not return. (The function definition does not need to be
* annotated.)
*
* MOZ_ReportCrash(const char* s, const char* file, int ln)
* MOZ_PRETEND_NORETURN_FOR_STATIC_ANALYSIS
*
* Some static analyzers, like scan-build from clang, can use this information
* to eliminate false positives. From the upstream documentation of scan-build:
* "This attribute is useful for annotating assertion handlers that actually
* can return, but for the purpose of using the analyzer we want to pretend
* that such functions do not return."
*
*/
#if defined(MOZ_HAVE_ANALYZER_NORETURN)
# define MOZ_PRETEND_NORETURN_FOR_STATIC_ANALYSIS MOZ_HAVE_ANALYZER_NORETURN
#else
# define MOZ_PRETEND_NORETURN_FOR_STATIC_ANALYSIS /* no support */
#endif
/*
* MOZ_ASAN_BLACKLIST is a macro to tell AddressSanitizer (a compile-time
* instrumentation shipped with Clang and GCC) to not instrument the annotated
* function. Furthermore, it will prevent the compiler from inlining the
* function because inlining currently breaks the blacklisting mechanism of
* AddressSanitizer.
*/
#if defined(__has_feature)
# if __has_feature(address_sanitizer)
# define MOZ_HAVE_ASAN_BLACKLIST
# endif
#elif defined(__GNUC__)
# if defined(__SANITIZE_ADDRESS__)
# define MOZ_HAVE_ASAN_BLACKLIST
# endif
#endif
#if defined(MOZ_HAVE_ASAN_BLACKLIST)
# define MOZ_ASAN_BLACKLIST MOZ_NEVER_INLINE __attribute__((no_sanitize_address))
#else
# define MOZ_ASAN_BLACKLIST /* nothing */
#endif
/*
* MOZ_TSAN_BLACKLIST is a macro to tell ThreadSanitizer (a compile-time
* instrumentation shipped with Clang) to not instrument the annotated function.
* Furthermore, it will prevent the compiler from inlining the function because
* inlining currently breaks the blacklisting mechanism of ThreadSanitizer.
*/
#if defined(__has_feature)
# if __has_feature(thread_sanitizer)
# define MOZ_TSAN_BLACKLIST MOZ_NEVER_INLINE __attribute__((no_sanitize_thread))
# else
# define MOZ_TSAN_BLACKLIST /* nothing */
# endif
#else
# define MOZ_TSAN_BLACKLIST /* nothing */
#endif
/**
* MOZ_ALLOCATOR tells the compiler that the function it marks returns either a
* "fresh", "pointer-free" block of memory, or nullptr. "Fresh" means that the
* block is not pointed to by any other reachable pointer in the program.
* "Pointer-free" means that the block contains no pointers to any valid object
* in the program. It may be initialized with other (non-pointer) values.
*
* Placing this attribute on appropriate functions helps GCC analyze pointer
* aliasing more accurately in their callers.
*
* GCC warns if a caller ignores the value returned by a function marked with
* MOZ_ALLOCATOR: it is hard to imagine cases where dropping the value returned
* by a function that meets the criteria above would be intentional.
*
* Place this attribute after the argument list and 'this' qualifiers of a
* function definition. For example, write
*
* void *my_allocator(size_t) MOZ_ALLOCATOR;
*
* or
*
* void *my_allocator(size_t bytes) MOZ_ALLOCATOR { ... }
*/
#if defined(__GNUC__) || defined(__clang__)
# define MOZ_ALLOCATOR __attribute__ ((malloc, warn_unused_result))
#else
# define MOZ_ALLOCATOR
#endif
/**
* MOZ_MUST_USE tells the compiler to emit a warning if a function's
* return value is not used by the caller.
*
* Place this attribute at the very beginning of a function declaration. For
* example, write
*
* MOZ_MUST_USE int foo();
*
* or
*
* MOZ_MUST_USE int foo() { return 42; }
*/
#if defined(__GNUC__) || defined(__clang__)
# define MOZ_MUST_USE __attribute__ ((warn_unused_result))
#else
# define MOZ_MUST_USE
#endif
#ifdef __cplusplus
/**
* MOZ_FALLTHROUGH is an annotation to suppress compiler warnings about switch
* cases that fall through without a break or return statement. MOZ_FALLTHROUGH
* is only needed on cases that have code.
*
* MOZ_FALLTHROUGH_ASSERT is an annotation to suppress compiler warnings about
* switch cases that MOZ_ASSERT(false) (or its alias MOZ_ASSERT_UNREACHABLE) in
* debug builds, but intentionally fall through in release builds. See comment
* in Assertions.h for more details.
*
* switch (foo) {
* case 1: // These cases have no code. No fallthrough annotations are needed.
* case 2:
* case 3: // This case has code, so a fallthrough annotation is needed!
* foo++;
* MOZ_FALLTHROUGH;
* case 4:
* return foo;
*
* default:
* // This case asserts in debug builds, falls through in release.
* MOZ_FALLTHROUGH_ASSERT("Unexpected foo value?!");
* case 5:
* return 5;
* }
*/
#ifndef __has_cpp_attribute
# define __has_cpp_attribute(x) 0
#endif
#if __has_cpp_attribute(clang::fallthrough)
# define MOZ_FALLTHROUGH [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
# define MOZ_FALLTHROUGH [[gnu::fallthrough]]
#elif defined(_MSC_VER)
/*
* MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
* https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
*/
# include <sal.h>
# define MOZ_FALLTHROUGH __fallthrough
#else
# define MOZ_FALLTHROUGH /* FALLTHROUGH */
#endif
/*
* The following macros are attributes that support the static analysis plugin
* included with Mozilla, and will be implemented (when such support is enabled)
* as C++11 attributes. Since such attributes are legal pretty much everywhere
* and have subtly different semantics depending on their placement, the
* following is a guide on where to place the attributes.
*
* Attributes that apply to a struct or class precede the name of the class:
* (Note that this is different from the placement of final for classes!)
*
* class MOZ_CLASS_ATTRIBUTE SomeClass {};
*
* Attributes that apply to functions follow the parentheses and const
* qualifiers but precede final, override and the function body:
*
* void DeclaredFunction() MOZ_FUNCTION_ATTRIBUTE;
* void SomeFunction() MOZ_FUNCTION_ATTRIBUTE {}
* void PureFunction() const MOZ_FUNCTION_ATTRIBUTE = 0;
* void OverriddenFunction() MOZ_FUNCTION_ATTIRBUTE override;
*
* Attributes that apply to variables or parameters follow the variable's name:
*
* int variable MOZ_VARIABLE_ATTRIBUTE;
*
* Attributes that apply to types follow the type name:
*
* typedef int MOZ_TYPE_ATTRIBUTE MagicInt;
* int MOZ_TYPE_ATTRIBUTE someVariable;
* int* MOZ_TYPE_ATTRIBUTE magicPtrInt;
* int MOZ_TYPE_ATTRIBUTE* ptrToMagicInt;
*
* Attributes that apply to statements precede the statement:
*
* MOZ_IF_ATTRIBUTE if (x == 0)
* MOZ_DO_ATTRIBUTE do { } while (0);
*
* Attributes that apply to labels precede the label:
*
* MOZ_LABEL_ATTRIBUTE target:
* goto target;
* MOZ_CASE_ATTRIBUTE case 5:
* MOZ_DEFAULT_ATTRIBUTE default:
*
* The static analyses that are performed by the plugin are as follows:
*
* MOZ_MUST_OVERRIDE: Applies to all C++ member functions. All immediate
* subclasses must provide an exact override of this method; if a subclass
* does not override this method, the compiler will emit an error. This
* attribute is not limited to virtual methods, so if it is applied to a
* nonvirtual method and the subclass does not provide an equivalent
* definition, the compiler will emit an error.
* MOZ_STACK_CLASS: Applies to all classes. Any class with this annotation is
* expected to live on the stack, so it is a compile-time error to use it, or
* an array of such objects, as a global or static variable, or as the type of
* a new expression (unless placement new is being used). If a member of
* another class uses this class, or if another class inherits from this
* class, then it is considered to be a stack class as well, although this
* attribute need not be provided in such cases.
* MOZ_NONHEAP_CLASS: Applies to all classes. Any class with this annotation is
* expected to live on the stack or in static storage, so it is a compile-time
* error to use it, or an array of such objects, as the type of a new
* expression. If a member of another class uses this class, or if another
* class inherits from this class, then it is considered to be a non-heap class
* as well, although this attribute need not be provided in such cases.
* MOZ_HEAP_CLASS: Applies to all classes. Any class with this annotation is
* expected to live on the heap, so it is a compile-time error to use it, or
* an array of such objects, as the type of a variable declaration, or as a
* temporary object. If a member of another class uses this class, or if
* another class inherits from this class, then it is considered to be a heap
* class as well, although this attribute need not be provided in such cases.
* MOZ_NON_TEMPORARY_CLASS: Applies to all classes. Any class with this
* annotation is expected not to live in a temporary. If a member of another
* class uses this class or if another class inherits from this class, then it
* is considered to be a non-temporary class as well, although this attribute
* need not be provided in such cases.
* MOZ_RAII: Applies to all classes. Any class with this annotation is assumed
* to be a RAII guard, which is expected to live on the stack in an automatic
* allocation. It is prohibited from being allocated in a temporary, static
* storage, or on the heap. This is a combination of MOZ_STACK_CLASS and
* MOZ_NON_TEMPORARY_CLASS.
* MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS: Applies to all classes that are
* intended to prevent introducing static initializers. This attribute
* currently makes it a compile-time error to instantiate these classes
* anywhere other than at the global scope, or as a static member of a class.
* In non-debug mode, it also prohibits non-trivial constructors and
* destructors.
* MOZ_TRIVIAL_CTOR_DTOR: Applies to all classes that must have both a trivial
* or constexpr constructor and a trivial destructor. Setting this attribute
* on a class makes it a compile-time error for that class to get a
* non-trivial constructor or destructor for any reason.
* MOZ_HEAP_ALLOCATOR: Applies to any function. This indicates that the return
* value is allocated on the heap, and will as a result check such allocations
* during MOZ_STACK_CLASS and MOZ_NONHEAP_CLASS annotation checking.
* MOZ_IMPLICIT: Applies to constructors. Implicit conversion constructors
* are disallowed by default unless they are marked as MOZ_IMPLICIT. This
* attribute must be used for constructors which intend to provide implicit
* conversions.
* MOZ_NO_ARITHMETIC_EXPR_IN_ARGUMENT: Applies to functions. Makes it a compile
* time error to pass arithmetic expressions on variables to the function.
* MOZ_OWNING_REF: Applies to declarations of pointers to reference counted
* types. This attribute tells the compiler that the raw pointer is a strong
* reference, where ownership through methods such as AddRef and Release is
* managed manually. This can make the compiler ignore these pointers when
* validating the usage of pointers otherwise.
*
* Example uses include owned pointers inside of unions, and pointers stored
* in POD types where a using a smart pointer class would make the object
* non-POD.
* MOZ_NON_OWNING_REF: Applies to declarations of pointers to reference counted
* types. This attribute tells the compiler that the raw pointer is a weak
* reference, which is ensured to be valid by a guarantee that the reference
* will be nulled before the pointer becomes invalid. This can make the compiler
* ignore these pointers when validating the usage of pointers otherwise.
*
* Examples include an mOwner pointer, which is nulled by the owning class's
* destructor, and is null-checked before dereferencing.
* MOZ_UNSAFE_REF: Applies to declarations of pointers to reference counted types.
* Occasionally there are non-owning references which are valid, but do not take
* the form of a MOZ_NON_OWNING_REF. Their safety may be dependent on the behaviour
* of API consumers. The string argument passed to this macro documents the safety
* conditions. This can make the compiler ignore these pointers when validating
* the usage of pointers elsewhere.
*
* Examples include an nsIAtom* member which is known at compile time to point to a
* static atom which is valid throughout the lifetime of the program, or an API which
* stores a pointer, but doesn't take ownership over it, instead requiring the API
* consumer to correctly null the value before it becomes invalid.
*
* Use of this annotation is discouraged when a strong reference or one of the above
* two annotations can be used instead.
* MOZ_NO_ADDREF_RELEASE_ON_RETURN: Applies to function declarations. Makes it
* a compile time error to call AddRef or Release on the return value of a
* function. This is intended to be used with operator->() of our smart
* pointer classes to ensure that the refcount of an object wrapped in a
* smart pointer is not manipulated directly.
* MOZ_MUST_USE_TYPE: Applies to type declarations. Makes it a compile time
* error to not use the return value of a function which has this type. This
* is intended to be used with types which it is an error to not use.
* MOZ_NEEDS_NO_VTABLE_TYPE: Applies to template class declarations. Makes it
* a compile time error to instantiate this template with a type parameter which
* has a VTable.
* MOZ_NON_MEMMOVABLE: Applies to class declarations for types that are not safe
* to be moved in memory using memmove().
* MOZ_NEEDS_MEMMOVABLE_TYPE: Applies to template class declarations where the
* template arguments are required to be safe to move in memory using
* memmove(). Passing MOZ_NON_MEMMOVABLE types to these templates is a
* compile time error.
* MOZ_NEEDS_MEMMOVABLE_MEMBERS: Applies to class declarations where each member
* must be safe to move in memory using memmove(). MOZ_NON_MEMMOVABLE types
* used in members of these classes are compile time errors.
* MOZ_INHERIT_TYPE_ANNOTATIONS_FROM_TEMPLATE_ARGS: Applies to template class
* declarations where an instance of the template should be considered, for
* static analysis purposes, to inherit any type annotations (such as
* MOZ_MUST_USE_TYPE and MOZ_STACK_CLASS) from its template arguments.
* MOZ_INIT_OUTSIDE_CTOR: Applies to class member declarations. Occasionally
* there are class members that are not initialized in the constructor,
* but logic elsewhere in the class ensures they are initialized prior to use.
* Using this attribute on a member disables the check that this member must be
* initialized in constructors via list-initialization, in the constructor body,
* or via functions called from the constructor body.
* MOZ_IS_CLASS_INIT: Applies to class method declarations. Occasionally the
* constructor doesn't initialize all of the member variables and another function
* is used to initialize the rest. This marker is used to make the static analysis
* tool aware that the marked function is part of the initialization process
* and to include the marked function in the scan mechanism that determines witch
* member variables still remain uninitialized.
* MOZ_NON_PARAM: Applies to types. Makes it compile time error to use the type
* in parameter without pointer or reference.
* MOZ_NON_AUTOABLE: Applies to class declarations. Makes it a compile time error to
* use `auto` in place of this type in variable declarations. This is intended to
* be used with types which are intended to be implicitly constructed into other
* other types before being assigned to variables.
* MOZ_REQUIRED_BASE_METHOD: Applies to virtual class method declarations.
* Sometimes derived classes override methods that need to be called by their
* overridden counterparts. This marker indicates that the marked method must
* be called by the method that it overrides.
*/
#ifdef MOZ_CLANG_PLUGIN
# define MOZ_MUST_OVERRIDE __attribute__((annotate("moz_must_override")))
# define MOZ_STACK_CLASS __attribute__((annotate("moz_stack_class")))
# define MOZ_NONHEAP_CLASS __attribute__((annotate("moz_nonheap_class")))
# define MOZ_HEAP_CLASS __attribute__((annotate("moz_heap_class")))
# define MOZ_NON_TEMPORARY_CLASS __attribute__((annotate("moz_non_temporary_class")))
# define MOZ_TRIVIAL_CTOR_DTOR __attribute__((annotate("moz_trivial_ctor_dtor")))
# ifdef DEBUG
/* in debug builds, these classes do have non-trivial constructors. */
# define MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS __attribute__((annotate("moz_global_class")))
# else
# define MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS __attribute__((annotate("moz_global_class"))) \
MOZ_TRIVIAL_CTOR_DTOR
# endif
# define MOZ_IMPLICIT __attribute__((annotate("moz_implicit")))
# define MOZ_NO_ARITHMETIC_EXPR_IN_ARGUMENT __attribute__((annotate("moz_no_arith_expr_in_arg")))
# define MOZ_OWNING_REF __attribute__((annotate("moz_strong_ref")))
# define MOZ_NON_OWNING_REF __attribute__((annotate("moz_weak_ref")))
# define MOZ_UNSAFE_REF(reason) __attribute__((annotate("moz_weak_ref")))
# define MOZ_NO_ADDREF_RELEASE_ON_RETURN __attribute__((annotate("moz_no_addref_release_on_return")))
# define MOZ_MUST_USE_TYPE __attribute__((annotate("moz_must_use_type")))
# define MOZ_NEEDS_NO_VTABLE_TYPE __attribute__((annotate("moz_needs_no_vtable_type")))
# define MOZ_NON_MEMMOVABLE __attribute__((annotate("moz_non_memmovable")))
# define MOZ_NEEDS_MEMMOVABLE_TYPE __attribute__((annotate("moz_needs_memmovable_type")))
# define MOZ_NEEDS_MEMMOVABLE_MEMBERS __attribute__((annotate("moz_needs_memmovable_members")))
# define MOZ_INHERIT_TYPE_ANNOTATIONS_FROM_TEMPLATE_ARGS \
__attribute__((annotate("moz_inherit_type_annotations_from_template_args")))
# define MOZ_NON_AUTOABLE __attribute__((annotate("moz_non_autoable")))
# define MOZ_INIT_OUTSIDE_CTOR \
__attribute__((annotate("moz_ignore_ctor_initialization")))
# define MOZ_IS_CLASS_INIT \
__attribute__((annotate("moz_is_class_init")))
# define MOZ_NON_PARAM \
__attribute__((annotate("moz_non_param")))
# define MOZ_REQUIRED_BASE_METHOD \
__attribute__((annotate("moz_required_base_method")))
/*
* It turns out that clang doesn't like void func() __attribute__ {} without a
* warning, so use pragmas to disable the warning. This code won't work on GCC
* anyways, so the warning is safe to ignore.
*/
# define MOZ_HEAP_ALLOCATOR \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wgcc-compat\"") \
__attribute__((annotate("moz_heap_allocator"))) \
_Pragma("clang diagnostic pop")
#else
# define MOZ_MUST_OVERRIDE /* nothing */
# define MOZ_STACK_CLASS /* nothing */
# define MOZ_NONHEAP_CLASS /* nothing */
# define MOZ_HEAP_CLASS /* nothing */
# define MOZ_NON_TEMPORARY_CLASS /* nothing */
# define MOZ_TRIVIAL_CTOR_DTOR /* nothing */
# define MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS /* nothing */
# define MOZ_IMPLICIT /* nothing */
# define MOZ_NO_ARITHMETIC_EXPR_IN_ARGUMENT /* nothing */
# define MOZ_HEAP_ALLOCATOR /* nothing */
# define MOZ_OWNING_REF /* nothing */
# define MOZ_NON_OWNING_REF /* nothing */
# define MOZ_UNSAFE_REF(reason) /* nothing */
# define MOZ_NO_ADDREF_RELEASE_ON_RETURN /* nothing */
# define MOZ_MUST_USE_TYPE /* nothing */
# define MOZ_NEEDS_NO_VTABLE_TYPE /* nothing */
# define MOZ_NON_MEMMOVABLE /* nothing */
# define MOZ_NEEDS_MEMMOVABLE_TYPE /* nothing */
# define MOZ_NEEDS_MEMMOVABLE_MEMBERS /* nothing */
# define MOZ_INHERIT_TYPE_ANNOTATIONS_FROM_TEMPLATE_ARGS /* nothing */
# define MOZ_INIT_OUTSIDE_CTOR /* nothing */
# define MOZ_IS_CLASS_INIT /* nothing */
# define MOZ_NON_PARAM /* nothing */
# define MOZ_NON_AUTOABLE /* nothing */
# define MOZ_REQUIRED_BASE_METHOD /* nothing */
#endif /* MOZ_CLANG_PLUGIN */
#define MOZ_RAII MOZ_NON_TEMPORARY_CLASS MOZ_STACK_CLASS
/*
* MOZ_HAVE_REF_QUALIFIERS is defined for compilers that support C++11's rvalue
* qualifier, "&&".
*/
#if defined(_MSC_VER) && _MSC_VER >= 1900
# define MOZ_HAVE_REF_QUALIFIERS
#elif defined(__clang__)
// All supported Clang versions
# define MOZ_HAVE_REF_QUALIFIERS
#elif defined(__GNUC__)
# include "mozilla/Compiler.h"
# define MOZ_HAVE_REF_QUALIFIERS
#endif
#endif /* __cplusplus */
/**
* Printf style formats. MOZ_FORMAT_PRINTF can be used to annotate a
* function or method that is "printf-like"; this will let (some)
* compilers check that the arguments match the template string.
*
* This macro takes two arguments. The first argument is the argument
* number of the template string. The second argument is the argument
* number of the '...' argument holding the arguments.
*
* Argument numbers start at 1. Note that the implicit "this"
* argument of a non-static member function counts as an argument.
*
* So, for a simple case like:
* void print_something (int whatever, const char *fmt, ...);
* The corresponding annotation would be
* MOZ_FORMAT_PRINTF(2, 3)
* However, if "print_something" were a non-static member function,
* then the annotation would be:
* MOZ_FORMAT_PRINTF(3, 4)
*
* Note that the checking is limited to standards-conforming
* printf-likes, and in particular this should not be used for
* PR_snprintf and friends, which are "printf-like" but which assign
* different meanings to the various formats.
*/
#ifdef __GNUC__
#define MOZ_FORMAT_PRINTF(stringIndex, firstToCheck) \
__attribute__ ((format (printf, stringIndex, firstToCheck)))
#else
#define MOZ_FORMAT_PRINTF(stringIndex, firstToCheck)
#endif
#endif /* mozilla_Attributes_h */