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Bug 1145631 - Part 6: Remove MOZ_OVERRIDE and MOZ_FINAL; r=froydnj
This commit is contained in:
Ehsan Akhgari
parent
e21f41d809
commit
7a5fd7382d
@ -50,8 +50,6 @@
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* don't indicate support for them here, due to
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* http://stackoverflow.com/questions/20498142/visual-studio-2013-explicit-keyword-bug
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*/
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# define MOZ_HAVE_CXX11_FINAL final
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# define MOZ_HAVE_CXX11_OVERRIDE
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# define MOZ_HAVE_NEVER_INLINE __declspec(noinline)
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# define MOZ_HAVE_NORETURN __declspec(noreturn)
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# ifdef __clang__
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@ -78,10 +76,6 @@
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# if __has_extension(cxx_explicit_conversions)
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# define MOZ_HAVE_EXPLICIT_CONVERSION
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# endif
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# if __has_extension(cxx_override_control)
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# define MOZ_HAVE_CXX11_OVERRIDE
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# define MOZ_HAVE_CXX11_FINAL final
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# endif
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# if __has_attribute(noinline)
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# define MOZ_HAVE_NEVER_INLINE __attribute__((noinline))
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# endif
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@ -90,17 +84,8 @@
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# endif
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#elif defined(__GNUC__)
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# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
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# if MOZ_GCC_VERSION_AT_LEAST(4, 7, 0)
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# define MOZ_HAVE_CXX11_OVERRIDE
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# define MOZ_HAVE_CXX11_FINAL final
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# endif
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# define MOZ_HAVE_CXX11_CONSTEXPR
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# define MOZ_HAVE_EXPLICIT_CONVERSION
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# else
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/* __final is a non-C++11 GCC synonym for 'final', per GCC r176655. */
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# if MOZ_GCC_VERSION_AT_LEAST(4, 7, 0)
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# define MOZ_HAVE_CXX11_FINAL __final
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# endif
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# endif
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# define MOZ_HAVE_NEVER_INLINE __attribute__((noinline))
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# define MOZ_HAVE_NORETURN __attribute__((noreturn))
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@ -291,116 +276,6 @@
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#ifdef __cplusplus
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/*
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* MOZ_OVERRIDE explicitly indicates that a virtual member function in a class
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* overrides a member function of a base class, rather than potentially being a
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* new member function. MOZ_OVERRIDE should be placed immediately before the
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* ';' terminating the member function's declaration, or before '= 0;' if the
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* member function is pure. If the member function is defined in the class
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* definition, it should appear before the opening brace of the function body.
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*
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* class Base
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* {
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* public:
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* virtual void f() = 0;
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* };
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* class Derived1 : public Base
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* {
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* public:
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* virtual void f() MOZ_OVERRIDE;
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* };
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* class Derived2 : public Base
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* {
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* public:
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* virtual void f() MOZ_OVERRIDE = 0;
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* };
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* class Derived3 : public Base
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* {
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* public:
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* virtual void f() MOZ_OVERRIDE { }
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* };
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*
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* In compilers supporting C++11 override controls, MOZ_OVERRIDE *requires* that
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* the function marked with it override a member function of a base class: it
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* is a compile error if it does not. Otherwise MOZ_OVERRIDE does not affect
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* semantics and merely documents the override relationship to the reader (but
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* of course must still be used correctly to not break C++11 compilers).
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*/
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#if defined(MOZ_HAVE_CXX11_OVERRIDE)
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# define MOZ_OVERRIDE override
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#else
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# define MOZ_OVERRIDE /* no support */
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#endif
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/*
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* MOZ_FINAL indicates that some functionality cannot be overridden through
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* inheritance. It can be used to annotate either classes/structs or virtual
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* member functions.
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*
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* To annotate a class/struct with MOZ_FINAL, place MOZ_FINAL immediately after
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* the name of the class, before the list of classes from which it derives (if
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* any) and before its opening brace. MOZ_FINAL must not be used to annotate
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* unnamed classes or structs. (With some compilers, and with C++11 proper, the
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* underlying expansion is ambiguous with specifying a class name.)
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*
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* class Base MOZ_FINAL
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* {
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* public:
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* Base();
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* ~Base();
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* virtual void f() { }
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* };
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* // This will be an error in some compilers:
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* class Derived : public Base
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* {
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* public:
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* ~Derived() { }
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* };
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*
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* One particularly common reason to specify MOZ_FINAL upon a class is to tell
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* the compiler that it's not dangerous for it to have a non-virtual destructor
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* yet have one or more virtual functions, silencing the warning it might emit
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* in this case. Suppose Base above weren't annotated with MOZ_FINAL. Because
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* ~Base() is non-virtual, an attempt to delete a Derived* through a Base*
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* wouldn't call ~Derived(), so any cleanup ~Derived() might do wouldn't happen.
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* (Formally C++ says behavior is undefined, but compilers will likely just call
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* ~Base() and not ~Derived().) Specifying MOZ_FINAL tells the compiler that
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* it's safe for the destructor to be non-virtual.
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*
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* In compilers implementing final controls, it is an error to inherit from a
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* class annotated with MOZ_FINAL. In other compilers it serves only as
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* documentation.
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*
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* To annotate a virtual member function with MOZ_FINAL, place MOZ_FINAL
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* immediately before the ';' terminating the member function's declaration, or
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* before '= 0;' if the member function is pure. If the member function is
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* defined in the class definition, it should appear before the opening brace of
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* the function body. (This placement is identical to that for MOZ_OVERRIDE.
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* If both are used, they should appear in the order 'MOZ_FINAL MOZ_OVERRIDE'
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* for consistency.)
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*
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* class Base
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* {
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* public:
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* virtual void f() MOZ_FINAL;
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* };
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* class Derived
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* {
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* public:
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* // This will be an error in some compilers:
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* virtual void f();
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* };
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*
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* In compilers implementing final controls, it is an error for a derived class
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* to override a method annotated with MOZ_FINAL. In other compilers it serves
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* only as documentation.
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*/
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#if defined(MOZ_HAVE_CXX11_FINAL)
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# define MOZ_FINAL MOZ_HAVE_CXX11_FINAL
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#else
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# define MOZ_FINAL /* no support */
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#endif
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/**
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* MOZ_WARN_UNUSED_RESULT tells the compiler to emit a warning if a function's
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* return value is not used by the caller.
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@ -428,17 +303,17 @@
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* following is a guide on where to place the attributes.
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*
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* Attributes that apply to a struct or class precede the name of the class:
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* (Note that this is different from the placement of MOZ_FINAL for classes!)
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* (Note that this is different from the placement of final for classes!)
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*
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* class MOZ_CLASS_ATTRIBUTE SomeClass {};
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*
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* Attributes that apply to functions follow the parentheses and const
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* qualifiers but precede MOZ_FINAL, MOZ_OVERRIDE and the function body:
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* qualifiers but precede final, override and the function body:
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*
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* void DeclaredFunction() MOZ_FUNCTION_ATTRIBUTE;
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* void SomeFunction() MOZ_FUNCTION_ATTRIBUTE {}
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* void PureFunction() const MOZ_FUNCTION_ATTRIBUTE = 0;
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* void OverriddenFunction() MOZ_FUNCTION_ATTIRBUTE MOZ_OVERRIDE;
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* void OverriddenFunction() MOZ_FUNCTION_ATTIRBUTE override;
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*
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* Attributes that apply to variables or parameters follow the variable's name:
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*
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