michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/Assertions.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "mozilla/TypedEnum.h"
michael@0: #include "mozilla/TypedEnumBits.h"
michael@0: 
michael@0: #include <stdint.h>
michael@0: 
michael@0: // A rough feature check for is_literal_type. Not very carefully checked.
michael@0: // Feel free to amend as needed.
michael@0: // We leave ANDROID out because it's using stlport which doesn't have std::is_literal_type.
michael@0: #if __cplusplus >= 201103L && !defined(ANDROID)
michael@0: #  if defined(__clang__)
michael@0:      /*
michael@0:       * Per Clang documentation, "Note that marketing version numbers should not
michael@0:       * be used to check for language features, as different vendors use different
michael@0:       * numbering schemes. Instead, use the feature checking macros."
michael@0:       */
michael@0: #    ifndef __has_extension
michael@0: #      define __has_extension __has_feature /* compatibility, for older versions of clang */
michael@0: #    endif
michael@0: #    if __has_extension(is_literal) && __has_include(<type_traits>)
michael@0: #      define MOZ_HAVE_IS_LITERAL
michael@0: #    endif
michael@0: #  elif defined(__GNUC__)
michael@0: #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
michael@0: #      if MOZ_GCC_VERSION_AT_LEAST(4, 6, 0)
michael@0: #        define MOZ_HAVE_IS_LITERAL
michael@0: #      endif
michael@0: #    endif
michael@0: #  elif defined(_MSC_VER)
michael@0: #    if _MSC_VER >= 1700
michael@0: #      define MOZ_HAVE_IS_LITERAL
michael@0: #    endif
michael@0: #  endif
michael@0: #endif
michael@0: 
michael@0: #ifdef MOZ_HAVE_IS_LITERAL
michael@0: #include <type_traits>
michael@0: template<typename T>
michael@0: void
michael@0: RequireLiteralType()
michael@0: {
michael@0:   static_assert(std::is_literal_type<T>::value, "Expected a literal type");
michael@0: }
michael@0: #else // not MOZ_HAVE_IS_LITERAL
michael@0: template<typename T>
michael@0: void
michael@0: RequireLiteralType()
michael@0: {
michael@0: }
michael@0: #endif
michael@0: 
michael@0: template<typename T>
michael@0: void
michael@0: RequireLiteralType(const T&)
michael@0: {
michael@0:   RequireLiteralType<T>();
michael@0: }
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(AutoEnum)
michael@0:   A,
michael@0:   B = -3,
michael@0:   C
michael@0: MOZ_END_ENUM_CLASS(AutoEnum)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(CharEnum, char)
michael@0:   A,
michael@0:   B = 3,
michael@0:   C
michael@0: MOZ_END_ENUM_CLASS(CharEnum)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(AutoEnumBitField)
michael@0:   A = 0x10,
michael@0:   B = 0x20,
michael@0:   C
michael@0: MOZ_END_ENUM_CLASS(AutoEnumBitField)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(CharEnumBitField, char)
michael@0:   A = 0x10,
michael@0:   B,
michael@0:   C = 0x40
michael@0: MOZ_END_ENUM_CLASS(CharEnumBitField)
michael@0: 
michael@0: struct Nested
michael@0: {
michael@0:   MOZ_BEGIN_NESTED_ENUM_CLASS(AutoEnum)
michael@0:     A,
michael@0:     B,
michael@0:     C = -1
michael@0:   MOZ_END_NESTED_ENUM_CLASS(AutoEnum)
michael@0: 
michael@0:   MOZ_BEGIN_NESTED_ENUM_CLASS(CharEnum, char)
michael@0:     A = 4,
michael@0:     B,
michael@0:     C = 1
michael@0:   MOZ_END_NESTED_ENUM_CLASS(CharEnum)
michael@0: 
michael@0:   MOZ_BEGIN_NESTED_ENUM_CLASS(AutoEnumBitField)
michael@0:     A,
michael@0:     B = 0x20,
michael@0:     C
michael@0:   MOZ_END_NESTED_ENUM_CLASS(AutoEnumBitField)
michael@0: 
michael@0:   MOZ_BEGIN_NESTED_ENUM_CLASS(CharEnumBitField, char)
michael@0:     A = 1,
michael@0:     B = 1,
michael@0:     C = 1
michael@0:   MOZ_END_NESTED_ENUM_CLASS(CharEnumBitField)
michael@0: };
michael@0: 
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(AutoEnumBitField)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(CharEnumBitField)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Nested::AutoEnumBitField)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Nested::CharEnumBitField)
michael@0: 
michael@0: #define MAKE_STANDARD_BITFIELD_FOR_TYPE(IntType)                   \
michael@0:   MOZ_BEGIN_ENUM_CLASS(BitFieldFor_##IntType, IntType)             \
michael@0:     A = 1,                                                         \
michael@0:     B = 2,                                                         \
michael@0:     C = 4,                                                         \
michael@0:   MOZ_END_ENUM_CLASS(BitFieldFor_##IntType)                        \
michael@0:   MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(BitFieldFor_##IntType)
michael@0: 
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(int8_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(uint8_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(int16_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(uint16_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(int32_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(uint32_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(int64_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(uint64_t)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(char)
michael@0: typedef signed char signed_char;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(signed_char)
michael@0: typedef unsigned char unsigned_char;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(unsigned_char)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(short)
michael@0: typedef unsigned short unsigned_short;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(unsigned_short)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(int)
michael@0: typedef unsigned int unsigned_int;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(unsigned_int)
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(long)
michael@0: typedef unsigned long unsigned_long;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(unsigned_long)
michael@0: typedef long long long_long;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(long_long)
michael@0: typedef unsigned long long unsigned_long_long;
michael@0: MAKE_STANDARD_BITFIELD_FOR_TYPE(unsigned_long_long)
michael@0: 
michael@0: #undef MAKE_STANDARD_BITFIELD_FOR_TYPE
michael@0: 
michael@0: template<typename T>
michael@0: void
michael@0: TestNonConvertibilityForOneType()
michael@0: {
michael@0:   using mozilla::IsConvertible;
michael@0: 
michael@0: #if defined(MOZ_HAVE_CXX11_STRONG_ENUMS) && defined(MOZ_HAVE_EXPLICIT_CONVERSION)
michael@0:   static_assert(!IsConvertible<T, bool>::value, "should not be convertible");
michael@0:   static_assert(!IsConvertible<T, int>::value, "should not be convertible");
michael@0:   static_assert(!IsConvertible<T, uint64_t>::value, "should not be convertible");
michael@0: #endif
michael@0: 
michael@0:   static_assert(!IsConvertible<bool, T>::value, "should not be convertible");
michael@0:   static_assert(!IsConvertible<int, T>::value, "should not be convertible");
michael@0:   static_assert(!IsConvertible<uint64_t, T>::value, "should not be convertible");
michael@0: }
michael@0: 
michael@0: template<typename TypedEnum>
michael@0: void
michael@0: TestTypedEnumBasics()
michael@0: {
michael@0:   const TypedEnum a = TypedEnum::A;
michael@0:   int unused = int(a);
michael@0:   (void) unused;
michael@0:   RequireLiteralType(TypedEnum::A);
michael@0:   RequireLiteralType(a);
michael@0:   TestNonConvertibilityForOneType<TypedEnum>();
michael@0: }
michael@0: 
michael@0: // Op wraps a bitwise binary operator, passed as a char template parameter,
michael@0: // and applies it to its arguments (t1, t2). For example,
michael@0: //
michael@0: //   Op<'|'>(t1, t2)
michael@0: //
michael@0: // is the same as
michael@0: //
michael@0: //   t1 | t2.
michael@0: //
michael@0: template<char o, typename T1, typename T2>
michael@0: auto Op(const T1& t1, const T2& t2)
michael@0:   -> decltype(t1 | t2) // See the static_assert's below --- the return type
michael@0:                        // depends solely on the operands type, not on the
michael@0:                        // choice of operation.
michael@0: {
michael@0:   using mozilla::IsSame;
michael@0:   static_assert(IsSame<decltype(t1 | t2), decltype(t1 & t2)>::value,
michael@0:                 "binary ops should have the same result type");
michael@0:   static_assert(IsSame<decltype(t1 | t2), decltype(t1 ^ t2)>::value,
michael@0:                 "binary ops should have the same result type");
michael@0: 
michael@0:   static_assert(o == '|' ||
michael@0:                 o == '&' ||
michael@0:                 o == '^', "unexpected operator character");
michael@0: 
michael@0:   return o == '|' ? t1 | t2
michael@0:        : o == '&' ? t1 & t2
michael@0:                   : t1 ^ t2;
michael@0: }
michael@0: 
michael@0: // OpAssign wraps a bitwise binary operator, passed as a char template
michael@0: // parameter, and applies the corresponding compound-assignment operator to its
michael@0: // arguments (t1, t2). For example,
michael@0: //
michael@0: //   OpAssign<'|'>(t1, t2)
michael@0: //
michael@0: // is the same as
michael@0: //
michael@0: //   t1 |= t2.
michael@0: //
michael@0: template<char o, typename T1, typename T2>
michael@0: T1& OpAssign(T1& t1, const T2& t2)
michael@0: {
michael@0:   static_assert(o == '|' ||
michael@0:                 o == '&' ||
michael@0:                 o == '^', "unexpected operator character");
michael@0: 
michael@0:   switch (o) {
michael@0:     case '|': return t1 |= t2;
michael@0:     case '&': return t1 &= t2;
michael@0:     case '^': return t1 ^= t2;
michael@0:     default: MOZ_CRASH();
michael@0:   }
michael@0: }
michael@0: 
michael@0: // Tests a single binary bitwise operator, using a single set of three operands.
michael@0: // The operations tested are:
michael@0: //
michael@0: //   result = t1 Op t2;
michael@0: //   result Op= t3;
michael@0: //
michael@0: // Where Op is the operator specified by the char template parameter 'o' and can
michael@0: // be any of '|', '&', '^'.
michael@0: //
michael@0: // Note that the operands t1, t2, t3 are intentionally passed with free types
michael@0: // (separate template parameters for each) because their type may actually be
michael@0: // different from TypedEnum:
michael@0: //   1) Their type could be CastableTypedEnumResult<TypedEnum> if they are
michael@0: //      the result of a bitwise operation themselves;
michael@0: //   2) In the non-c++11 legacy path, the type of enum values is also
michael@0: //      different from TypedEnum.
michael@0: //
michael@0: template<typename TypedEnum, char o, typename T1, typename T2, typename T3>
michael@0: void TestBinOp(const T1& t1, const T2& t2, const T3& t3)
michael@0: {
michael@0:   typedef typename mozilla::detail::UnsignedIntegerTypeForEnum<TypedEnum>::Type
michael@0:           UnsignedIntegerType;
michael@0: 
michael@0:   // Part 1:
michael@0:   // Test the bitwise binary operator i.e.
michael@0:   //   result = t1 Op t2;
michael@0:   auto result = Op<o>(t1, t2);
michael@0: 
michael@0:   typedef decltype(result) ResultType;
michael@0: 
michael@0:   RequireLiteralType<ResultType>();
michael@0:   TestNonConvertibilityForOneType<ResultType>();
michael@0: 
michael@0:   UnsignedIntegerType unsignedIntegerResult
michael@0:     = Op<o>(UnsignedIntegerType(t1), UnsignedIntegerType(t2));
michael@0: 
michael@0:   MOZ_RELEASE_ASSERT(unsignedIntegerResult == UnsignedIntegerType(result));
michael@0:   MOZ_RELEASE_ASSERT(TypedEnum(unsignedIntegerResult) == TypedEnum(result));
michael@0:   MOZ_RELEASE_ASSERT((!unsignedIntegerResult) == (!result));
michael@0:   MOZ_RELEASE_ASSERT((!!unsignedIntegerResult) == (!!result));
michael@0:   MOZ_RELEASE_ASSERT(bool(unsignedIntegerResult) == bool(result));
michael@0: 
michael@0:   // Part 2:
michael@0:   // Test the compound-assignment operator, i.e.
michael@0:   //   result Op= t3;
michael@0:   TypedEnum newResult = result;
michael@0:   OpAssign<o>(newResult, t3);
michael@0:   UnsignedIntegerType unsignedIntegerNewResult = unsignedIntegerResult;
michael@0:   OpAssign<o>(unsignedIntegerNewResult, UnsignedIntegerType(t3));
michael@0:   MOZ_RELEASE_ASSERT(TypedEnum(unsignedIntegerNewResult) == newResult);
michael@0: 
michael@0:   // Part 3:
michael@0:   // Test additional boolean operators that we unfortunately had to add to
michael@0:   // CastableTypedEnumResult at some point to please some compiler,
michael@0:   // even though bool convertibility should have been enough.
michael@0:   MOZ_RELEASE_ASSERT(result == TypedEnum(result));
michael@0:   MOZ_RELEASE_ASSERT(!(result != TypedEnum(result)));
michael@0:   MOZ_RELEASE_ASSERT((result && true) == bool(result));
michael@0:   MOZ_RELEASE_ASSERT((result && false) == false);
michael@0:   MOZ_RELEASE_ASSERT((true && result) == bool(result));
michael@0:   MOZ_RELEASE_ASSERT((false && result && false) == false);
michael@0:   MOZ_RELEASE_ASSERT((result || false) == bool(result));
michael@0:   MOZ_RELEASE_ASSERT((result || true) == true);
michael@0:   MOZ_RELEASE_ASSERT((false || result) == bool(result));
michael@0:   MOZ_RELEASE_ASSERT((true || result) == true);
michael@0: }
michael@0: 
michael@0: // Similar to TestBinOp but testing the unary ~ operator.
michael@0: template<typename TypedEnum, typename T>
michael@0: void TestTilde(const T& t)
michael@0: {
michael@0:   typedef typename mozilla::detail::UnsignedIntegerTypeForEnum<TypedEnum>::Type
michael@0:           UnsignedIntegerType;
michael@0: 
michael@0:   auto result = ~t;
michael@0: 
michael@0:   typedef decltype(result) ResultType;
michael@0: 
michael@0:   RequireLiteralType<ResultType>();
michael@0:   TestNonConvertibilityForOneType<ResultType>();
michael@0: 
michael@0:   UnsignedIntegerType unsignedIntegerResult = ~(UnsignedIntegerType(t));
michael@0: 
michael@0:   MOZ_RELEASE_ASSERT(unsignedIntegerResult == UnsignedIntegerType(result));
michael@0:   MOZ_RELEASE_ASSERT(TypedEnum(unsignedIntegerResult) == TypedEnum(result));
michael@0:   MOZ_RELEASE_ASSERT((!unsignedIntegerResult) == (!result));
michael@0:   MOZ_RELEASE_ASSERT((!!unsignedIntegerResult) == (!!result));
michael@0:   MOZ_RELEASE_ASSERT(bool(unsignedIntegerResult) == bool(result));
michael@0: }
michael@0: 
michael@0: // Helper dispatching a given triple of operands to all operator-specific
michael@0: // testing functions.
michael@0: template<typename TypedEnum, typename T1, typename T2, typename T3>
michael@0: void TestAllOpsForGivenOperands(const T1& t1, const T2& t2, const T3& t3)
michael@0: {
michael@0:   TestBinOp<TypedEnum, '|'>(t1, t2, t3);
michael@0:   TestBinOp<TypedEnum, '&'>(t1, t2, t3);
michael@0:   TestBinOp<TypedEnum, '^'>(t1, t2, t3);
michael@0:   TestTilde<TypedEnum>(t1);
michael@0: }
michael@0: 
michael@0: // Helper building various triples of operands using a given operator,
michael@0: // and testing all operators with them.
michael@0: template<typename TypedEnum, char o>
michael@0: void TestAllOpsForOperandsBuiltUsingGivenOp()
michael@0: {
michael@0:   // The type of enum values like TypedEnum::A may be different from
michael@0:   // TypedEnum. That is the case in the legacy non-C++11 path. We want to
michael@0:   // ensure good test coverage even when these two types are distinct.
michael@0:   // To that effect, we have both 'auto' typed variables, preserving the
michael@0:   // original type of enum values, and 'plain' typed variables, that
michael@0:   // are plain TypedEnum's.
michael@0: 
michael@0:   const TypedEnum a_plain = TypedEnum::A;
michael@0:   const TypedEnum b_plain = TypedEnum::B;
michael@0:   const TypedEnum c_plain = TypedEnum::C;
michael@0: 
michael@0:   auto a_auto = TypedEnum::A;
michael@0:   auto b_auto = TypedEnum::B;
michael@0:   auto c_auto = TypedEnum::C;
michael@0: 
michael@0:   auto ab_plain = Op<o>(a_plain, b_plain);
michael@0:   auto bc_plain = Op<o>(b_plain, c_plain);
michael@0:   auto ab_auto = Op<o>(a_auto, b_auto);
michael@0:   auto bc_auto = Op<o>(b_auto, c_auto);
michael@0: 
michael@0:   // On each row below, we pass a triple of operands. Keep in mind that this
michael@0:   // is going to be received as (t1, t2, t3) and the actual tests performed
michael@0:   // will be of the form
michael@0:   //
michael@0:   //   result = t1 Op t2;
michael@0:   //   result Op= t3;
michael@0:   //
michael@0:   // For this reason, we carefully ensure that the values of (t1, t2)
michael@0:   // systematically cover all types of such pairs; to limit complexity,
michael@0:   // we are not so careful with t3, and we just try to pass t3's
michael@0:   // that may lead to nontrivial bitwise operations.
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_plain,  b_plain,  c_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_plain,  bc_plain, b_auto);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_plain, c_plain,  a_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_plain, bc_plain, a_auto);
michael@0: 
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_plain,  b_auto,   c_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_plain,  bc_auto,  b_auto);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_plain, c_auto,   a_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_plain, bc_auto,  a_auto);
michael@0: 
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_auto,   b_plain,  c_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_auto,   bc_plain, b_auto);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_auto,  c_plain,  a_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_auto,  bc_plain, a_auto);
michael@0: 
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_auto,   b_auto,   c_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(a_auto,   bc_auto,  b_auto);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_auto,  c_auto,   a_plain);
michael@0:   TestAllOpsForGivenOperands<TypedEnum>(ab_auto,  bc_auto,  a_auto);
michael@0: }
michael@0: 
michael@0: // Tests all bitwise operations on a given TypedEnum bitfield.
michael@0: template<typename TypedEnum>
michael@0: void
michael@0: TestTypedEnumBitField()
michael@0: {
michael@0:   TestTypedEnumBasics<TypedEnum>();
michael@0: 
michael@0:   TestAllOpsForOperandsBuiltUsingGivenOp<TypedEnum, '|'>();
michael@0:   TestAllOpsForOperandsBuiltUsingGivenOp<TypedEnum, '&'>();
michael@0:   TestAllOpsForOperandsBuiltUsingGivenOp<TypedEnum, '^'>();
michael@0: }
michael@0: 
michael@0: // Checks that enum bitwise expressions have the same non-convertibility properties as
michael@0: // c++11 enum classes do, i.e. not implicitly convertible to anything
michael@0: // (though *explicitly* convertible).
michael@0: void TestNoConversionsBetweenUnrelatedTypes()
michael@0: {
michael@0:   using mozilla::IsConvertible;
michael@0: 
michael@0:   // Two typed enum classes having the same underlying integer type, to ensure that
michael@0:   // we would catch bugs accidentally allowing conversions in that case.
michael@0:   typedef CharEnumBitField T1;
michael@0:   typedef Nested::CharEnumBitField T2;
michael@0: 
michael@0:   static_assert(!IsConvertible<T1, T2>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<T1, decltype(T2::A)>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<T1, decltype(T2::A | T2::B)>::value,
michael@0:                 "should not be convertible");
michael@0: 
michael@0:   static_assert(!IsConvertible<decltype(T1::A), T2>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<decltype(T1::A), decltype(T2::A)>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<decltype(T1::A), decltype(T2::A | T2::B)>::value,
michael@0:                 "should not be convertible");
michael@0: 
michael@0:   // The following are #ifdef MOZ_HAVE_EXPLICIT_CONVERSION because
michael@0:   // without support for explicit conversion operators, we can't easily have these
michael@0:   // bad conversions completely removed. They still do fail to compile in practice,
michael@0:   // but not in a way that we can static_assert on.
michael@0: #ifdef MOZ_HAVE_EXPLICIT_CONVERSION
michael@0:   static_assert(!IsConvertible<decltype(T1::A | T1::B), T2>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<decltype(T1::A | T1::B), decltype(T2::A)>::value,
michael@0:                 "should not be convertible");
michael@0:   static_assert(!IsConvertible<decltype(T1::A | T1::B), decltype(T2::A | T2::B)>::value,
michael@0:                 "should not be convertible");
michael@0: #endif
michael@0: }
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Int8EnumWithHighBits, int8_t)
michael@0:   A = 0x20,
michael@0:   B = 0x40
michael@0: MOZ_END_ENUM_CLASS(Int8EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Int8EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Uint8EnumWithHighBits, uint8_t)
michael@0:   A = 0x40,
michael@0:   B = 0x80
michael@0: MOZ_END_ENUM_CLASS(Uint8EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Uint8EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Int16EnumWithHighBits, int16_t)
michael@0:   A = 0x2000,
michael@0:   B = 0x4000
michael@0: MOZ_END_ENUM_CLASS(Int16EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Int16EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Uint16EnumWithHighBits, uint16_t)
michael@0:   A = 0x4000,
michael@0:   B = 0x8000
michael@0: MOZ_END_ENUM_CLASS(Uint16EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Uint16EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Int32EnumWithHighBits, int32_t)
michael@0:   A = 0x20000000,
michael@0:   B = 0x40000000
michael@0: MOZ_END_ENUM_CLASS(Int32EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Int32EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Uint32EnumWithHighBits, uint32_t)
michael@0:   A = 0x40000000u,
michael@0:   B = 0x80000000u
michael@0: MOZ_END_ENUM_CLASS(Uint32EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Uint32EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Int64EnumWithHighBits, int64_t)
michael@0:   A = 0x2000000000000000ll,
michael@0:   B = 0x4000000000000000ll
michael@0: MOZ_END_ENUM_CLASS(Int64EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Int64EnumWithHighBits)
michael@0: 
michael@0: MOZ_BEGIN_ENUM_CLASS(Uint64EnumWithHighBits, uint64_t)
michael@0:   A = 0x4000000000000000ull,
michael@0:   B = 0x8000000000000000ull
michael@0: MOZ_END_ENUM_CLASS(Uint64EnumWithHighBits)
michael@0: MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(Uint64EnumWithHighBits)
michael@0: 
michael@0: // Checks that we don't accidentally truncate high bits by coercing to the wrong
michael@0: // integer type internally when implementing bitwise ops.
michael@0: template<typename EnumType, typename IntType>
michael@0: void TestIsNotTruncated()
michael@0: {
michael@0:   EnumType a = EnumType::A;
michael@0:   EnumType b = EnumType::B;
michael@0:   MOZ_RELEASE_ASSERT(IntType(a));
michael@0:   MOZ_RELEASE_ASSERT(IntType(b));
michael@0:   MOZ_RELEASE_ASSERT(a | EnumType::B);
michael@0:   MOZ_RELEASE_ASSERT(a | b);
michael@0:   MOZ_RELEASE_ASSERT(EnumType::A | EnumType::B);
michael@0:   EnumType c = EnumType::A | EnumType::B;
michael@0:   MOZ_RELEASE_ASSERT(IntType(c));
michael@0:   MOZ_RELEASE_ASSERT(c & c);
michael@0:   MOZ_RELEASE_ASSERT(c | c);
michael@0:   MOZ_RELEASE_ASSERT(c == (EnumType::A | EnumType::B));
michael@0:   MOZ_RELEASE_ASSERT(a != (EnumType::A | EnumType::B));
michael@0:   MOZ_RELEASE_ASSERT(b != (EnumType::A | EnumType::B));
michael@0:   MOZ_RELEASE_ASSERT(c & EnumType::A);
michael@0:   MOZ_RELEASE_ASSERT(c & EnumType::B);
michael@0:   EnumType d = EnumType::A;
michael@0:   d |= EnumType::B;
michael@0:   MOZ_RELEASE_ASSERT(d == c);
michael@0: }
michael@0: 
michael@0: int
michael@0: main()
michael@0: {
michael@0:   TestTypedEnumBasics<AutoEnum>();
michael@0:   TestTypedEnumBasics<CharEnum>();
michael@0:   TestTypedEnumBasics<Nested::AutoEnum>();
michael@0:   TestTypedEnumBasics<Nested::CharEnum>();
michael@0: 
michael@0:   TestTypedEnumBitField<AutoEnumBitField>();
michael@0:   TestTypedEnumBitField<CharEnumBitField>();
michael@0:   TestTypedEnumBitField<Nested::AutoEnumBitField>();
michael@0:   TestTypedEnumBitField<Nested::CharEnumBitField>();
michael@0: 
michael@0:   TestTypedEnumBitField<BitFieldFor_uint8_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_int8_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_uint16_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_int16_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_uint32_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_int32_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_uint64_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_int64_t>();
michael@0:   TestTypedEnumBitField<BitFieldFor_char>();
michael@0:   TestTypedEnumBitField<BitFieldFor_signed_char>();
michael@0:   TestTypedEnumBitField<BitFieldFor_unsigned_char>();
michael@0:   TestTypedEnumBitField<BitFieldFor_short>();
michael@0:   TestTypedEnumBitField<BitFieldFor_unsigned_short>();
michael@0:   TestTypedEnumBitField<BitFieldFor_int>();
michael@0:   TestTypedEnumBitField<BitFieldFor_unsigned_int>();
michael@0:   TestTypedEnumBitField<BitFieldFor_long>();
michael@0:   TestTypedEnumBitField<BitFieldFor_unsigned_long>();
michael@0:   TestTypedEnumBitField<BitFieldFor_long_long>();
michael@0:   TestTypedEnumBitField<BitFieldFor_unsigned_long_long>();
michael@0: 
michael@0:   TestNoConversionsBetweenUnrelatedTypes();
michael@0: 
michael@0:   TestIsNotTruncated<Int8EnumWithHighBits, int8_t>();
michael@0:   TestIsNotTruncated<Int16EnumWithHighBits, int16_t>();
michael@0:   TestIsNotTruncated<Int32EnumWithHighBits, int32_t>();
michael@0:   TestIsNotTruncated<Int64EnumWithHighBits, int64_t>();
michael@0:   TestIsNotTruncated<Uint8EnumWithHighBits, uint8_t>();
michael@0:   TestIsNotTruncated<Uint16EnumWithHighBits, uint16_t>();
michael@0:   TestIsNotTruncated<Uint32EnumWithHighBits, uint32_t>();
michael@0:   TestIsNotTruncated<Uint64EnumWithHighBits, uint64_t>();
michael@0: 
michael@0:   return 0;
michael@0: }