mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 14:15:30 +00:00
4354953b4f
Most of this patch (with the exception of dom/bindings/Codegen.py) was
generated by the following bash script:
#!/bin/bash
function convert() {
echo "Converting $1 to $2..."
find . ! -wholename "*nsprpub*" \
! -wholename "*security/nss*" \
! -wholename "*/.hg*" \
! -wholename "*/.git*" \
! -wholename "obj-*" \
-type f \
\( -iname "*.cpp" \
-o -iname "*.h" \
-o -iname "*.cc" \
-o -iname "*.idl" \
-o -iname "*.ipdl" \
-o -iname "*.ipdlh" \
-o -iname "*.mm" \) | \
xargs -n 1 sed -i -e "s/\b$1\b/$2/g"
}
convert MOZ_DELETE '= delete'
829 lines
27 KiB
C++
829 lines
27 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
#include <utility>
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/Attributes.h"
|
|
#include "mozilla/Compiler.h"
|
|
#include "mozilla/Maybe.h"
|
|
#include "mozilla/Move.h"
|
|
#include "mozilla/Types.h"
|
|
#include "mozilla/TypeTraits.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
|
|
using mozilla::IsSame;
|
|
using mozilla::Maybe;
|
|
using mozilla::Move;
|
|
using mozilla::Nothing;
|
|
using mozilla::Some;
|
|
using mozilla::Swap;
|
|
using mozilla::ToMaybe;
|
|
using mozilla::UniquePtr;
|
|
|
|
#if MOZ_IS_MSVC
|
|
template<typename T> struct Identity { typedef T type; };
|
|
# define DECLTYPE(EXPR) Identity<decltype(EXPR)>::type
|
|
#elif MOZ_IS_GCC
|
|
// Work around a bug in GCC < 4.7 that prevents expressions of
|
|
// the form |decltype(foo)::type| from working. See here:
|
|
// http://stackoverflow.com/questions/14330768/c11-compiler-error-when-using-decltypevar-followed-by-internal-type-of-var
|
|
# if MOZ_GCC_VERSION_AT_LEAST(4, 7, 0)
|
|
# define DECLTYPE(EXPR) decltype(EXPR)
|
|
# else
|
|
template<typename T> struct Identity { typedef T type; };
|
|
# define DECLTYPE(EXPR) Identity<decltype(EXPR)>::type
|
|
# endif
|
|
#else
|
|
# define DECLTYPE(EXPR) decltype(EXPR)
|
|
#endif
|
|
|
|
#define RUN_TEST(t) \
|
|
do { \
|
|
bool cond = (t()); \
|
|
if (!cond) \
|
|
return 1; \
|
|
cond = AllDestructorsWereCalled(); \
|
|
MOZ_ASSERT(cond, "Failed to destroy all objects during test: " #t); \
|
|
if (!cond) \
|
|
return 1; \
|
|
} while (false)
|
|
|
|
enum Status
|
|
{
|
|
eWasDefaultConstructed,
|
|
eWasConstructed,
|
|
eWasCopyConstructed,
|
|
eWasMoveConstructed,
|
|
eWasCopyAssigned,
|
|
eWasMoveAssigned,
|
|
eWasMovedFrom
|
|
};
|
|
|
|
static size_t sUndestroyedObjects = 0;
|
|
|
|
static bool AllDestructorsWereCalled()
|
|
{
|
|
return sUndestroyedObjects == 0;
|
|
}
|
|
|
|
struct BasicValue
|
|
{
|
|
BasicValue()
|
|
: mStatus(eWasDefaultConstructed)
|
|
, mTag(0)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
explicit BasicValue(int aTag)
|
|
: mStatus(eWasConstructed)
|
|
, mTag(aTag)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
BasicValue(const BasicValue& aOther)
|
|
: mStatus(eWasCopyConstructed)
|
|
, mTag(aOther.mTag)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
BasicValue(BasicValue&& aOther)
|
|
: mStatus(eWasMoveConstructed)
|
|
, mTag(aOther.mTag)
|
|
{
|
|
++sUndestroyedObjects;
|
|
aOther.mStatus = eWasMovedFrom;
|
|
aOther.mTag = 0;
|
|
}
|
|
|
|
~BasicValue() { --sUndestroyedObjects; }
|
|
|
|
BasicValue& operator=(const BasicValue& aOther)
|
|
{
|
|
mStatus = eWasCopyAssigned;
|
|
mTag = aOther.mTag;
|
|
return *this;
|
|
}
|
|
|
|
BasicValue& operator=(BasicValue&& aOther)
|
|
{
|
|
mStatus = eWasMoveAssigned;
|
|
mTag = aOther.mTag;
|
|
aOther.mStatus = eWasMovedFrom;
|
|
aOther.mTag = 0;
|
|
return *this;
|
|
}
|
|
|
|
bool operator==(const BasicValue& aOther) const
|
|
{
|
|
return mTag == aOther.mTag;
|
|
}
|
|
|
|
bool operator<(const BasicValue& aOther) const
|
|
{
|
|
return mTag < aOther.mTag;
|
|
}
|
|
|
|
Status GetStatus() const { return mStatus; }
|
|
void SetTag(int aValue) { mTag = aValue; }
|
|
int GetTag() const { return mTag; }
|
|
|
|
private:
|
|
Status mStatus;
|
|
int mTag;
|
|
};
|
|
|
|
struct UncopyableValue
|
|
{
|
|
UncopyableValue()
|
|
: mStatus(eWasDefaultConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
UncopyableValue(UncopyableValue&& aOther)
|
|
: mStatus(eWasMoveConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
aOther.mStatus = eWasMovedFrom;
|
|
}
|
|
|
|
~UncopyableValue() { --sUndestroyedObjects; }
|
|
|
|
UncopyableValue& operator=(UncopyableValue&& aOther)
|
|
{
|
|
mStatus = eWasMoveAssigned;
|
|
aOther.mStatus = eWasMovedFrom;
|
|
return *this;
|
|
}
|
|
|
|
Status GetStatus() { return mStatus; }
|
|
|
|
private:
|
|
UncopyableValue(const UncopyableValue& aOther) = delete;
|
|
UncopyableValue& operator=(const UncopyableValue& aOther) = delete;
|
|
|
|
Status mStatus;
|
|
};
|
|
|
|
struct UnmovableValue
|
|
{
|
|
UnmovableValue()
|
|
: mStatus(eWasDefaultConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
UnmovableValue(const UnmovableValue& aOther)
|
|
: mStatus(eWasCopyConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
~UnmovableValue() { --sUndestroyedObjects; }
|
|
|
|
UnmovableValue& operator=(const UnmovableValue& aOther)
|
|
{
|
|
mStatus = eWasCopyAssigned;
|
|
return *this;
|
|
}
|
|
|
|
Status GetStatus() { return mStatus; }
|
|
|
|
private:
|
|
UnmovableValue(UnmovableValue&& aOther) = delete;
|
|
UnmovableValue& operator=(UnmovableValue&& aOther) = delete;
|
|
|
|
Status mStatus;
|
|
};
|
|
|
|
struct UncopyableUnmovableValue
|
|
{
|
|
UncopyableUnmovableValue()
|
|
: mStatus(eWasDefaultConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
explicit UncopyableUnmovableValue(int)
|
|
: mStatus(eWasConstructed)
|
|
{
|
|
++sUndestroyedObjects;
|
|
}
|
|
|
|
~UncopyableUnmovableValue() { --sUndestroyedObjects; }
|
|
|
|
Status GetStatus() { return mStatus; }
|
|
|
|
private:
|
|
UncopyableUnmovableValue(const UncopyableUnmovableValue& aOther) = delete;
|
|
UncopyableUnmovableValue& operator=(const UncopyableUnmovableValue& aOther) = delete;
|
|
UncopyableUnmovableValue(UncopyableUnmovableValue&& aOther) = delete;
|
|
UncopyableUnmovableValue& operator=(UncopyableUnmovableValue&& aOther) = delete;
|
|
|
|
Status mStatus;
|
|
};
|
|
|
|
static bool
|
|
TestBasicFeatures()
|
|
{
|
|
// Check that a Maybe<T> is initialized to Nothing.
|
|
Maybe<BasicValue> mayValue;
|
|
static_assert(IsSame<BasicValue, DECLTYPE(mayValue)::ValueType>::value,
|
|
"Should have BasicValue ValueType");
|
|
MOZ_RELEASE_ASSERT(!mayValue);
|
|
MOZ_RELEASE_ASSERT(!mayValue.isSome());
|
|
MOZ_RELEASE_ASSERT(mayValue.isNothing());
|
|
|
|
// Check that emplace() default constructs and the accessors work.
|
|
mayValue.emplace();
|
|
MOZ_RELEASE_ASSERT(mayValue);
|
|
MOZ_RELEASE_ASSERT(mayValue.isSome());
|
|
MOZ_RELEASE_ASSERT(!mayValue.isNothing());
|
|
MOZ_RELEASE_ASSERT(*mayValue == BasicValue());
|
|
MOZ_RELEASE_ASSERT(mayValue.value() == BasicValue());
|
|
static_assert(IsSame<BasicValue, DECLTYPE(mayValue.value())>::value,
|
|
"value() should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(mayValue.ref() == BasicValue());
|
|
static_assert(IsSame<BasicValue&, DECLTYPE(mayValue.ref())>::value,
|
|
"ref() should return a BasicValue&");
|
|
MOZ_RELEASE_ASSERT(mayValue.ptr() != nullptr);
|
|
static_assert(IsSame<BasicValue*, DECLTYPE(mayValue.ptr())>::value,
|
|
"ptr() should return a BasicValue*");
|
|
MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasDefaultConstructed);
|
|
|
|
// Check that reset() works.
|
|
mayValue.reset();
|
|
MOZ_RELEASE_ASSERT(!mayValue);
|
|
MOZ_RELEASE_ASSERT(!mayValue.isSome());
|
|
MOZ_RELEASE_ASSERT(mayValue.isNothing());
|
|
|
|
// Check that emplace(T1) calls the correct constructor.
|
|
mayValue.emplace(1);
|
|
MOZ_RELEASE_ASSERT(mayValue);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 1);
|
|
mayValue.reset();
|
|
MOZ_RELEASE_ASSERT(!mayValue);
|
|
|
|
// Check that Some() and Nothing() work.
|
|
mayValue = Some(BasicValue(2));
|
|
MOZ_RELEASE_ASSERT(mayValue);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasMoveConstructed);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 2);
|
|
mayValue = Nothing();
|
|
MOZ_RELEASE_ASSERT(!mayValue);
|
|
|
|
// Check that the accessors work through a const ref.
|
|
mayValue.emplace();
|
|
const Maybe<BasicValue>& mayValueCRef = mayValue;
|
|
MOZ_RELEASE_ASSERT(mayValueCRef);
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.isSome());
|
|
MOZ_RELEASE_ASSERT(!mayValueCRef.isNothing());
|
|
MOZ_RELEASE_ASSERT(*mayValueCRef == BasicValue());
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.value() == BasicValue());
|
|
static_assert(IsSame<BasicValue, DECLTYPE(mayValueCRef.value())>::value,
|
|
"value() should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.ref() == BasicValue());
|
|
static_assert(IsSame<const BasicValue&,
|
|
DECLTYPE(mayValueCRef.ref())>::value,
|
|
"ref() should return a const BasicValue&");
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.ptr() != nullptr);
|
|
static_assert(IsSame<const BasicValue*,
|
|
DECLTYPE(mayValueCRef.ptr())>::value,
|
|
"ptr() should return a const BasicValue*");
|
|
MOZ_RELEASE_ASSERT(mayValueCRef->GetStatus() == eWasDefaultConstructed);
|
|
mayValue.reset();
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
TestCopyAndMove()
|
|
{
|
|
// Check that we get moves when possible for types that can support both moves
|
|
// and copies.
|
|
Maybe<BasicValue> mayBasicValue = Some(BasicValue(1));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 1);
|
|
mayBasicValue = Some(BasicValue(2));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveAssigned);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 2);
|
|
mayBasicValue.reset();
|
|
mayBasicValue.emplace(BasicValue(3));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 3);
|
|
|
|
// Check that we get copies when moves aren't possible.
|
|
Maybe<BasicValue> mayBasicValue2 = Some(*mayBasicValue);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 3);
|
|
mayBasicValue->SetTag(4);
|
|
mayBasicValue2 = mayBasicValue;
|
|
// This test should work again when we fix bug 1052940.
|
|
//MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyAssigned);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 4);
|
|
mayBasicValue->SetTag(5);
|
|
mayBasicValue2.reset();
|
|
mayBasicValue2.emplace(*mayBasicValue);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 5);
|
|
|
|
// Check that Move() works. (Another sanity check for move support.)
|
|
Maybe<BasicValue> mayBasicValue3 = Some(Move(*mayBasicValue));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMoveConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue3->GetTag() == 5);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMovedFrom);
|
|
mayBasicValue2->SetTag(6);
|
|
mayBasicValue3 = Some(Move(*mayBasicValue2));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMoveAssigned);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue3->GetTag() == 6);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasMovedFrom);
|
|
Maybe<BasicValue> mayBasicValue4;
|
|
mayBasicValue4.emplace(Move(*mayBasicValue3));
|
|
MOZ_RELEASE_ASSERT(mayBasicValue4->GetStatus() == eWasMoveConstructed);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue4->GetTag() == 6);
|
|
MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMovedFrom);
|
|
|
|
// Check that we always get copies for types that don't support moves.
|
|
// XXX(seth): These tests fail but probably shouldn't. For now we'll just
|
|
// consider using Maybe with types that allow copies but have deleted or
|
|
// private move constructors, or which do not support copy assignment, to
|
|
// be supported only to the extent that we need for existing code to work.
|
|
// These tests should work again when we fix bug 1052940.
|
|
/*
|
|
Maybe<UnmovableValue> mayUnmovableValue = Some(UnmovableValue());
|
|
MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyConstructed);
|
|
mayUnmovableValue = Some(UnmovableValue());
|
|
MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyAssigned);
|
|
mayUnmovableValue.reset();
|
|
mayUnmovableValue.emplace(UnmovableValue());
|
|
MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyConstructed);
|
|
*/
|
|
|
|
// Check that types that only support moves, but not copies, work.
|
|
Maybe<UncopyableValue> mayUncopyableValue = Some(UncopyableValue());
|
|
MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveConstructed);
|
|
mayUncopyableValue = Some(UncopyableValue());
|
|
MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveAssigned);
|
|
mayUncopyableValue.reset();
|
|
mayUncopyableValue.emplace(UncopyableValue());
|
|
MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveConstructed);
|
|
|
|
// Check that types that support neither moves or copies work.
|
|
Maybe<UncopyableUnmovableValue> mayUncopyableUnmovableValue;
|
|
mayUncopyableUnmovableValue.emplace();
|
|
MOZ_RELEASE_ASSERT(mayUncopyableUnmovableValue->GetStatus() == eWasDefaultConstructed);
|
|
mayUncopyableUnmovableValue.reset();
|
|
mayUncopyableUnmovableValue.emplace(0);
|
|
MOZ_RELEASE_ASSERT(mayUncopyableUnmovableValue->GetStatus() == eWasConstructed);
|
|
|
|
return true;
|
|
}
|
|
|
|
static BasicValue* sStaticBasicValue = nullptr;
|
|
|
|
static BasicValue
|
|
MakeBasicValue()
|
|
{
|
|
return BasicValue(9);
|
|
}
|
|
|
|
static BasicValue&
|
|
MakeBasicValueRef()
|
|
{
|
|
return *sStaticBasicValue;
|
|
}
|
|
|
|
static BasicValue*
|
|
MakeBasicValuePtr()
|
|
{
|
|
return sStaticBasicValue;
|
|
}
|
|
|
|
static bool
|
|
TestFunctionalAccessors()
|
|
{
|
|
BasicValue value(9);
|
|
sStaticBasicValue = new BasicValue(9);
|
|
|
|
// Check that the 'some' case of functional accessors works.
|
|
Maybe<BasicValue> someValue = Some(BasicValue(3));
|
|
MOZ_RELEASE_ASSERT(someValue.valueOr(value) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(someValue.valueOr(value))>::value,
|
|
"valueOr should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(someValue.valueOrFrom(&MakeBasicValue) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(someValue.valueOrFrom(&MakeBasicValue))>::value,
|
|
"valueOrFrom should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(someValue.ptrOr(&value) != &value);
|
|
static_assert(IsSame<BasicValue*,
|
|
DECLTYPE(someValue.ptrOr(&value))>::value,
|
|
"ptrOr should return a BasicValue*");
|
|
MOZ_RELEASE_ASSERT(*someValue.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue*,
|
|
DECLTYPE(someValue.ptrOrFrom(&MakeBasicValuePtr))>::value,
|
|
"ptrOrFrom should return a BasicValue*");
|
|
MOZ_RELEASE_ASSERT(someValue.refOr(value) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue&,
|
|
DECLTYPE(someValue.refOr(value))>::value,
|
|
"refOr should return a BasicValue&");
|
|
MOZ_RELEASE_ASSERT(someValue.refOrFrom(&MakeBasicValueRef) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue&,
|
|
DECLTYPE(someValue.refOrFrom(&MakeBasicValueRef))>::value,
|
|
"refOrFrom should return a BasicValue&");
|
|
|
|
// Check that the 'some' case works through a const reference.
|
|
const Maybe<BasicValue>& someValueCRef = someValue;
|
|
MOZ_RELEASE_ASSERT(someValueCRef.valueOr(value) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(someValueCRef.valueOr(value))>::value,
|
|
"valueOr should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(someValueCRef.valueOrFrom(&MakeBasicValue) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(someValueCRef.valueOrFrom(&MakeBasicValue))>::value,
|
|
"valueOrFrom should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(someValueCRef.ptrOr(&value) != &value);
|
|
static_assert(IsSame<const BasicValue*,
|
|
DECLTYPE(someValueCRef.ptrOr(&value))>::value,
|
|
"ptrOr should return a const BasicValue*");
|
|
MOZ_RELEASE_ASSERT(*someValueCRef.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(3));
|
|
static_assert(IsSame<const BasicValue*,
|
|
DECLTYPE(someValueCRef.ptrOrFrom(&MakeBasicValuePtr))>::value,
|
|
"ptrOrFrom should return a const BasicValue*");
|
|
MOZ_RELEASE_ASSERT(someValueCRef.refOr(value) == BasicValue(3));
|
|
static_assert(IsSame<const BasicValue&,
|
|
DECLTYPE(someValueCRef.refOr(value))>::value,
|
|
"refOr should return a const BasicValue&");
|
|
MOZ_RELEASE_ASSERT(someValueCRef.refOrFrom(&MakeBasicValueRef) == BasicValue(3));
|
|
static_assert(IsSame<const BasicValue&,
|
|
DECLTYPE(someValueCRef.refOrFrom(&MakeBasicValueRef))>::value,
|
|
"refOrFrom should return a const BasicValue&");
|
|
|
|
// Check that the 'none' case of functional accessors works.
|
|
Maybe<BasicValue> noneValue;
|
|
MOZ_RELEASE_ASSERT(noneValue.valueOr(value) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(noneValue.valueOr(value))>::value,
|
|
"valueOr should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(noneValue.valueOrFrom(&MakeBasicValue) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(noneValue.valueOrFrom(&MakeBasicValue))>::value,
|
|
"valueOrFrom should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(noneValue.ptrOr(&value) == &value);
|
|
static_assert(IsSame<BasicValue*,
|
|
DECLTYPE(noneValue.ptrOr(&value))>::value,
|
|
"ptrOr should return a BasicValue*");
|
|
MOZ_RELEASE_ASSERT(*noneValue.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue*,
|
|
DECLTYPE(noneValue.ptrOrFrom(&MakeBasicValuePtr))>::value,
|
|
"ptrOrFrom should return a BasicValue*");
|
|
MOZ_RELEASE_ASSERT(noneValue.refOr(value) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue&,
|
|
DECLTYPE(noneValue.refOr(value))>::value,
|
|
"refOr should return a BasicValue&");
|
|
MOZ_RELEASE_ASSERT(noneValue.refOrFrom(&MakeBasicValueRef) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue&,
|
|
DECLTYPE(noneValue.refOrFrom(&MakeBasicValueRef))>::value,
|
|
"refOrFrom should return a BasicValue&");
|
|
|
|
// Check that the 'none' case works through a const reference.
|
|
const Maybe<BasicValue>& noneValueCRef = noneValue;
|
|
MOZ_RELEASE_ASSERT(noneValueCRef.valueOr(value) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(noneValueCRef.valueOr(value))>::value,
|
|
"valueOr should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(noneValueCRef.valueOrFrom(&MakeBasicValue) == BasicValue(9));
|
|
static_assert(IsSame<BasicValue,
|
|
DECLTYPE(noneValueCRef.valueOrFrom(&MakeBasicValue))>::value,
|
|
"valueOrFrom should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(noneValueCRef.ptrOr(&value) == &value);
|
|
static_assert(IsSame<const BasicValue*,
|
|
DECLTYPE(noneValueCRef.ptrOr(&value))>::value,
|
|
"ptrOr should return a const BasicValue*");
|
|
MOZ_RELEASE_ASSERT(*noneValueCRef.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(9));
|
|
static_assert(IsSame<const BasicValue*,
|
|
DECLTYPE(noneValueCRef.ptrOrFrom(&MakeBasicValuePtr))>::value,
|
|
"ptrOrFrom should return a const BasicValue*");
|
|
MOZ_RELEASE_ASSERT(noneValueCRef.refOr(value) == BasicValue(9));
|
|
static_assert(IsSame<const BasicValue&,
|
|
DECLTYPE(noneValueCRef.refOr(value))>::value,
|
|
"refOr should return a const BasicValue&");
|
|
MOZ_RELEASE_ASSERT(noneValueCRef.refOrFrom(&MakeBasicValueRef) == BasicValue(9));
|
|
static_assert(IsSame<const BasicValue&,
|
|
DECLTYPE(noneValueCRef.refOrFrom(&MakeBasicValueRef))>::value,
|
|
"refOrFrom should return a const BasicValue&");
|
|
|
|
// Clean up so the undestroyed objects count stays accurate.
|
|
delete sStaticBasicValue;
|
|
sStaticBasicValue = nullptr;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool gFunctionWasApplied = false;
|
|
|
|
static void
|
|
IncrementTag(BasicValue& aValue)
|
|
{
|
|
gFunctionWasApplied = true;
|
|
aValue.SetTag(aValue.GetTag() + 1);
|
|
}
|
|
|
|
static void
|
|
IncrementTagBy(BasicValue& aValue, int aAmount)
|
|
{
|
|
gFunctionWasApplied = true;
|
|
aValue.SetTag(aValue.GetTag() + aAmount);
|
|
}
|
|
|
|
static void
|
|
AccessValue(const BasicValue&)
|
|
{
|
|
gFunctionWasApplied = true;
|
|
}
|
|
|
|
static void
|
|
AccessValueWithArg(const BasicValue&, int)
|
|
{
|
|
gFunctionWasApplied = true;
|
|
}
|
|
|
|
struct IncrementTagFunctor
|
|
{
|
|
IncrementTagFunctor() : mBy(1), mArgMoved(false) { }
|
|
|
|
void operator()(BasicValue& aValue)
|
|
{
|
|
aValue.SetTag(aValue.GetTag() + mBy.GetTag());
|
|
}
|
|
|
|
void operator()(BasicValue& aValue, const BasicValue& aArg)
|
|
{
|
|
mArgMoved = false;
|
|
aValue.SetTag(aValue.GetTag() + aArg.GetTag());
|
|
}
|
|
|
|
void operator()(BasicValue& aValue, BasicValue&& aArg)
|
|
{
|
|
mArgMoved = true;
|
|
aValue.SetTag(aValue.GetTag() + aArg.GetTag());
|
|
}
|
|
|
|
BasicValue mBy;
|
|
bool mArgMoved;
|
|
};
|
|
|
|
static bool
|
|
TestApply()
|
|
{
|
|
// Check that apply handles the 'Nothing' case.
|
|
gFunctionWasApplied = false;
|
|
Maybe<BasicValue> mayValue;
|
|
mayValue.apply(&IncrementTag);
|
|
mayValue.apply(&AccessValue);
|
|
mayValue.apply(&IncrementTagBy, 1);
|
|
mayValue.apply(&AccessValueWithArg, 1);
|
|
MOZ_RELEASE_ASSERT(!gFunctionWasApplied);
|
|
|
|
// Check that apply handles the 'Some' case.
|
|
mayValue = Some(BasicValue(1));
|
|
mayValue.apply(&IncrementTag);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 2);
|
|
gFunctionWasApplied = false;
|
|
mayValue.apply(&AccessValue);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
gFunctionWasApplied = false;
|
|
mayValue.apply(&IncrementTagBy, 2);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 4);
|
|
gFunctionWasApplied = false;
|
|
mayValue.apply(&AccessValueWithArg, 1);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
|
|
// Check that apply works with a const reference.
|
|
const Maybe<BasicValue>& mayValueCRef = mayValue;
|
|
gFunctionWasApplied = false;
|
|
mayValueCRef.apply(&AccessValue);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
gFunctionWasApplied = false;
|
|
mayValueCRef.apply(&AccessValueWithArg, 1);
|
|
MOZ_RELEASE_ASSERT(gFunctionWasApplied);
|
|
|
|
// Check that apply works with functors.
|
|
IncrementTagFunctor tagIncrementer;
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mBy.GetStatus() == eWasConstructed);
|
|
mayValue = Some(BasicValue(1));
|
|
mayValue.apply(tagIncrementer);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 2);
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mBy.GetStatus() == eWasConstructed);
|
|
mayValue.apply(tagIncrementer, BasicValue(2));
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 4);
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mArgMoved == true);
|
|
BasicValue incrementBy(3);
|
|
mayValue.apply(tagIncrementer, incrementBy);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 7);
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(tagIncrementer.mArgMoved == false);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
TimesTwo(const BasicValue& aValue)
|
|
{
|
|
return aValue.GetTag() * 2;
|
|
}
|
|
|
|
static int
|
|
TimesTwoAndResetOriginal(BasicValue& aValue)
|
|
{
|
|
int tag = aValue.GetTag();
|
|
aValue.SetTag(1);
|
|
return tag * 2;
|
|
}
|
|
|
|
static int
|
|
TimesNum(const BasicValue& aValue, int aNum)
|
|
{
|
|
return aValue.GetTag() * aNum;
|
|
}
|
|
|
|
static int
|
|
TimesNumAndResetOriginal(BasicValue& aValue, int aNum)
|
|
{
|
|
int tag = aValue.GetTag();
|
|
aValue.SetTag(1);
|
|
return tag * aNum;
|
|
}
|
|
|
|
struct MultiplyTagFunctor
|
|
{
|
|
MultiplyTagFunctor() : mBy(2), mArgMoved(false) { }
|
|
|
|
int operator()(BasicValue& aValue)
|
|
{
|
|
return aValue.GetTag() * mBy.GetTag();
|
|
}
|
|
|
|
int operator()(BasicValue& aValue, const BasicValue& aArg)
|
|
{
|
|
mArgMoved = false;
|
|
return aValue.GetTag() * aArg.GetTag();
|
|
}
|
|
|
|
int operator()(BasicValue& aValue, BasicValue&& aArg)
|
|
{
|
|
mArgMoved = true;
|
|
return aValue.GetTag() * aArg.GetTag();
|
|
}
|
|
|
|
BasicValue mBy;
|
|
bool mArgMoved;
|
|
};
|
|
|
|
static bool
|
|
TestMap()
|
|
{
|
|
// Check that map handles the 'Nothing' case.
|
|
Maybe<BasicValue> mayValue;
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesTwo) == Nothing());
|
|
static_assert(IsSame<Maybe<int>,
|
|
DECLTYPE(mayValue.map(&TimesTwo))>::value,
|
|
"map(TimesTwo) should return a Maybe<int>");
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesTwoAndResetOriginal) == Nothing());
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesNum, 3) == Nothing());
|
|
static_assert(IsSame<Maybe<int>,
|
|
DECLTYPE(mayValue.map(&TimesNum, 3))>::value,
|
|
"map(TimesNum, 3) should return a Maybe<int>");
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesNumAndResetOriginal, 3) == Nothing());
|
|
|
|
// Check that map handles the 'Some' case.
|
|
mayValue = Some(BasicValue(2));
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesTwo) == Some(4));
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesTwoAndResetOriginal) == Some(4));
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 1);
|
|
mayValue = Some(BasicValue(2));
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesNum, 3) == Some(6));
|
|
MOZ_RELEASE_ASSERT(mayValue.map(&TimesNumAndResetOriginal, 3) == Some(6));
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 1);
|
|
|
|
// Check that map works with a const reference.
|
|
mayValue->SetTag(2);
|
|
const Maybe<BasicValue>& mayValueCRef = mayValue;
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.map(&TimesTwo) == Some(4));
|
|
static_assert(IsSame<Maybe<int>,
|
|
DECLTYPE(mayValueCRef.map(&TimesTwo))>::value,
|
|
"map(TimesTwo) should return a Maybe<int>");
|
|
MOZ_RELEASE_ASSERT(mayValueCRef.map(&TimesNum, 3) == Some(6));
|
|
static_assert(IsSame<Maybe<int>,
|
|
DECLTYPE(mayValueCRef.map(&TimesNum, 3))>::value,
|
|
"map(TimesNum, 3) should return a Maybe<int>");
|
|
|
|
// Check that map works with functors.
|
|
// XXX(seth): Support for functors will be added in bug 1054115; it had to be
|
|
// ripped out temporarily because of incompatibilities with GCC 4.4.
|
|
/*
|
|
MultiplyTagFunctor tagMultiplier;
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(mayValue.map(tagMultiplier) == Some(4));
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(mayValue.map(tagMultiplier, BasicValue(3)) == Some(6));
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mArgMoved == true);
|
|
BasicValue multiplyBy(3);
|
|
MOZ_RELEASE_ASSERT(mayValue.map(tagMultiplier, multiplyBy) == Some(6));
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mBy.GetStatus() == eWasConstructed);
|
|
MOZ_RELEASE_ASSERT(tagMultiplier.mArgMoved == false);
|
|
*/
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
TestToMaybe()
|
|
{
|
|
BasicValue value(1);
|
|
BasicValue* nullPointer = nullptr;
|
|
|
|
// Check that a non-null pointer translates into a Some value.
|
|
Maybe<BasicValue> mayValue = ToMaybe(&value);
|
|
static_assert(IsSame<Maybe<BasicValue>, DECLTYPE(ToMaybe(&value))>::value,
|
|
"ToMaybe should return a Maybe<BasicValue>");
|
|
MOZ_RELEASE_ASSERT(mayValue.isSome());
|
|
MOZ_RELEASE_ASSERT(mayValue->GetTag() == 1);
|
|
MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasCopyConstructed);
|
|
MOZ_RELEASE_ASSERT(value.GetStatus() != eWasMovedFrom);
|
|
|
|
// Check that a null pointer translates into a Nothing value.
|
|
mayValue = ToMaybe(nullPointer);
|
|
static_assert(IsSame<Maybe<BasicValue>, DECLTYPE(ToMaybe(nullPointer))>::value,
|
|
"ToMaybe should return a Maybe<BasicValue>");
|
|
MOZ_RELEASE_ASSERT(mayValue.isNothing());
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
TestComparisonOperators()
|
|
{
|
|
Maybe<BasicValue> nothingValue = Nothing();
|
|
Maybe<BasicValue> anotherNothingValue = Nothing();
|
|
Maybe<BasicValue> oneValue = Some(BasicValue(1));
|
|
Maybe<BasicValue> anotherOneValue = Some(BasicValue(1));
|
|
Maybe<BasicValue> twoValue = Some(BasicValue(2));
|
|
|
|
// Check equality.
|
|
MOZ_RELEASE_ASSERT(nothingValue == anotherNothingValue);
|
|
MOZ_RELEASE_ASSERT(oneValue == anotherOneValue);
|
|
|
|
// Check inequality.
|
|
MOZ_RELEASE_ASSERT(nothingValue != oneValue);
|
|
MOZ_RELEASE_ASSERT(oneValue != nothingValue);
|
|
MOZ_RELEASE_ASSERT(oneValue != twoValue);
|
|
|
|
// Check '<'.
|
|
MOZ_RELEASE_ASSERT(nothingValue < oneValue);
|
|
MOZ_RELEASE_ASSERT(oneValue < twoValue);
|
|
|
|
// Check '<='.
|
|
MOZ_RELEASE_ASSERT(nothingValue <= anotherNothingValue);
|
|
MOZ_RELEASE_ASSERT(nothingValue <= oneValue);
|
|
MOZ_RELEASE_ASSERT(oneValue <= oneValue);
|
|
MOZ_RELEASE_ASSERT(oneValue <= twoValue);
|
|
|
|
// Check '>'.
|
|
MOZ_RELEASE_ASSERT(oneValue > nothingValue);
|
|
MOZ_RELEASE_ASSERT(twoValue > oneValue);
|
|
|
|
// Check '>='.
|
|
MOZ_RELEASE_ASSERT(nothingValue >= anotherNothingValue);
|
|
MOZ_RELEASE_ASSERT(oneValue >= nothingValue);
|
|
MOZ_RELEASE_ASSERT(oneValue >= oneValue);
|
|
MOZ_RELEASE_ASSERT(twoValue >= oneValue);
|
|
|
|
return true;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
RUN_TEST(TestBasicFeatures);
|
|
RUN_TEST(TestCopyAndMove);
|
|
RUN_TEST(TestFunctionalAccessors);
|
|
RUN_TEST(TestApply);
|
|
RUN_TEST(TestMap);
|
|
RUN_TEST(TestToMaybe);
|
|
RUN_TEST(TestComparisonOperators);
|
|
|
|
return 0;
|
|
}
|