mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 00:25:27 +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 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <utility>
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/Compiler.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/Move.h"
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#include "mozilla/Types.h"
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#include "mozilla/TypeTraits.h"
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#include "mozilla/UniquePtr.h"
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using mozilla::IsSame;
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using mozilla::Maybe;
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using mozilla::Move;
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using mozilla::Nothing;
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using mozilla::Some;
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using mozilla::Swap;
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using mozilla::ToMaybe;
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using mozilla::UniquePtr;
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#if MOZ_IS_MSVC
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template<typename T> struct Identity { typedef T type; };
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# define DECLTYPE(EXPR) Identity<decltype(EXPR)>::type
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#elif MOZ_IS_GCC
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// Work around a bug in GCC < 4.7 that prevents expressions of
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// the form |decltype(foo)::type| from working. See here:
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// http://stackoverflow.com/questions/14330768/c11-compiler-error-when-using-decltypevar-followed-by-internal-type-of-var
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# if MOZ_GCC_VERSION_AT_LEAST(4, 7, 0)
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# define DECLTYPE(EXPR) decltype(EXPR)
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# else
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template<typename T> struct Identity { typedef T type; };
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# define DECLTYPE(EXPR) Identity<decltype(EXPR)>::type
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# endif
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#else
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# define DECLTYPE(EXPR) decltype(EXPR)
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#endif
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#define RUN_TEST(t) \
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do { \
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bool cond = (t()); \
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if (!cond) \
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return 1; \
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cond = AllDestructorsWereCalled(); \
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MOZ_ASSERT(cond, "Failed to destroy all objects during test: " #t); \
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if (!cond) \
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return 1; \
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} while (false)
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enum Status
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{
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eWasDefaultConstructed,
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eWasConstructed,
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eWasCopyConstructed,
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eWasMoveConstructed,
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eWasCopyAssigned,
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eWasMoveAssigned,
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eWasMovedFrom
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};
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static size_t sUndestroyedObjects = 0;
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static bool AllDestructorsWereCalled()
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{
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return sUndestroyedObjects == 0;
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}
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struct BasicValue
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{
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BasicValue()
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: mStatus(eWasDefaultConstructed)
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, mTag(0)
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{
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++sUndestroyedObjects;
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}
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explicit BasicValue(int aTag)
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: mStatus(eWasConstructed)
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, mTag(aTag)
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{
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++sUndestroyedObjects;
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}
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BasicValue(const BasicValue& aOther)
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: mStatus(eWasCopyConstructed)
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, mTag(aOther.mTag)
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{
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++sUndestroyedObjects;
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}
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BasicValue(BasicValue&& aOther)
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: mStatus(eWasMoveConstructed)
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, mTag(aOther.mTag)
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{
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++sUndestroyedObjects;
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aOther.mStatus = eWasMovedFrom;
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aOther.mTag = 0;
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}
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~BasicValue() { --sUndestroyedObjects; }
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BasicValue& operator=(const BasicValue& aOther)
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{
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mStatus = eWasCopyAssigned;
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mTag = aOther.mTag;
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return *this;
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}
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BasicValue& operator=(BasicValue&& aOther)
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{
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mStatus = eWasMoveAssigned;
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mTag = aOther.mTag;
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aOther.mStatus = eWasMovedFrom;
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aOther.mTag = 0;
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return *this;
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}
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bool operator==(const BasicValue& aOther) const
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{
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return mTag == aOther.mTag;
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}
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bool operator<(const BasicValue& aOther) const
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{
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return mTag < aOther.mTag;
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}
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Status GetStatus() const { return mStatus; }
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void SetTag(int aValue) { mTag = aValue; }
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int GetTag() const { return mTag; }
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private:
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Status mStatus;
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int mTag;
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};
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struct UncopyableValue
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{
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UncopyableValue()
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: mStatus(eWasDefaultConstructed)
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{
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++sUndestroyedObjects;
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}
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UncopyableValue(UncopyableValue&& aOther)
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: mStatus(eWasMoveConstructed)
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{
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++sUndestroyedObjects;
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aOther.mStatus = eWasMovedFrom;
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}
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~UncopyableValue() { --sUndestroyedObjects; }
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UncopyableValue& operator=(UncopyableValue&& aOther)
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{
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mStatus = eWasMoveAssigned;
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aOther.mStatus = eWasMovedFrom;
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return *this;
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}
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Status GetStatus() { return mStatus; }
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private:
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UncopyableValue(const UncopyableValue& aOther) = delete;
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UncopyableValue& operator=(const UncopyableValue& aOther) = delete;
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Status mStatus;
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};
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struct UnmovableValue
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{
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UnmovableValue()
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: mStatus(eWasDefaultConstructed)
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{
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++sUndestroyedObjects;
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}
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UnmovableValue(const UnmovableValue& aOther)
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: mStatus(eWasCopyConstructed)
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{
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++sUndestroyedObjects;
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}
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~UnmovableValue() { --sUndestroyedObjects; }
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UnmovableValue& operator=(const UnmovableValue& aOther)
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{
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mStatus = eWasCopyAssigned;
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return *this;
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}
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Status GetStatus() { return mStatus; }
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private:
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UnmovableValue(UnmovableValue&& aOther) = delete;
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UnmovableValue& operator=(UnmovableValue&& aOther) = delete;
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Status mStatus;
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};
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struct UncopyableUnmovableValue
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{
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UncopyableUnmovableValue()
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: mStatus(eWasDefaultConstructed)
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{
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++sUndestroyedObjects;
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}
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explicit UncopyableUnmovableValue(int)
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: mStatus(eWasConstructed)
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{
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++sUndestroyedObjects;
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}
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~UncopyableUnmovableValue() { --sUndestroyedObjects; }
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Status GetStatus() { return mStatus; }
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private:
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UncopyableUnmovableValue(const UncopyableUnmovableValue& aOther) = delete;
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UncopyableUnmovableValue& operator=(const UncopyableUnmovableValue& aOther) = delete;
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UncopyableUnmovableValue(UncopyableUnmovableValue&& aOther) = delete;
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UncopyableUnmovableValue& operator=(UncopyableUnmovableValue&& aOther) = delete;
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Status mStatus;
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};
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static bool
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TestBasicFeatures()
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{
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// Check that a Maybe<T> is initialized to Nothing.
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Maybe<BasicValue> mayValue;
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static_assert(IsSame<BasicValue, DECLTYPE(mayValue)::ValueType>::value,
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"Should have BasicValue ValueType");
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MOZ_RELEASE_ASSERT(!mayValue);
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MOZ_RELEASE_ASSERT(!mayValue.isSome());
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MOZ_RELEASE_ASSERT(mayValue.isNothing());
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// Check that emplace() default constructs and the accessors work.
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mayValue.emplace();
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MOZ_RELEASE_ASSERT(mayValue);
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MOZ_RELEASE_ASSERT(mayValue.isSome());
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MOZ_RELEASE_ASSERT(!mayValue.isNothing());
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MOZ_RELEASE_ASSERT(*mayValue == BasicValue());
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MOZ_RELEASE_ASSERT(mayValue.value() == BasicValue());
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static_assert(IsSame<BasicValue, DECLTYPE(mayValue.value())>::value,
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"value() should return a BasicValue");
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MOZ_RELEASE_ASSERT(mayValue.ref() == BasicValue());
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static_assert(IsSame<BasicValue&, DECLTYPE(mayValue.ref())>::value,
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"ref() should return a BasicValue&");
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MOZ_RELEASE_ASSERT(mayValue.ptr() != nullptr);
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static_assert(IsSame<BasicValue*, DECLTYPE(mayValue.ptr())>::value,
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"ptr() should return a BasicValue*");
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MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasDefaultConstructed);
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// Check that reset() works.
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mayValue.reset();
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MOZ_RELEASE_ASSERT(!mayValue);
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MOZ_RELEASE_ASSERT(!mayValue.isSome());
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MOZ_RELEASE_ASSERT(mayValue.isNothing());
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// Check that emplace(T1) calls the correct constructor.
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mayValue.emplace(1);
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MOZ_RELEASE_ASSERT(mayValue);
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MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasConstructed);
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MOZ_RELEASE_ASSERT(mayValue->GetTag() == 1);
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mayValue.reset();
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MOZ_RELEASE_ASSERT(!mayValue);
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// Check that Some() and Nothing() work.
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mayValue = Some(BasicValue(2));
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MOZ_RELEASE_ASSERT(mayValue);
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MOZ_RELEASE_ASSERT(mayValue->GetStatus() == eWasMoveConstructed);
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MOZ_RELEASE_ASSERT(mayValue->GetTag() == 2);
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mayValue = Nothing();
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MOZ_RELEASE_ASSERT(!mayValue);
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// Check that the accessors work through a const ref.
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mayValue.emplace();
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const Maybe<BasicValue>& mayValueCRef = mayValue;
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MOZ_RELEASE_ASSERT(mayValueCRef);
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MOZ_RELEASE_ASSERT(mayValueCRef.isSome());
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MOZ_RELEASE_ASSERT(!mayValueCRef.isNothing());
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MOZ_RELEASE_ASSERT(*mayValueCRef == BasicValue());
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MOZ_RELEASE_ASSERT(mayValueCRef.value() == BasicValue());
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static_assert(IsSame<BasicValue, DECLTYPE(mayValueCRef.value())>::value,
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"value() should return a BasicValue");
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MOZ_RELEASE_ASSERT(mayValueCRef.ref() == BasicValue());
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static_assert(IsSame<const BasicValue&,
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DECLTYPE(mayValueCRef.ref())>::value,
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"ref() should return a const BasicValue&");
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MOZ_RELEASE_ASSERT(mayValueCRef.ptr() != nullptr);
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static_assert(IsSame<const BasicValue*,
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DECLTYPE(mayValueCRef.ptr())>::value,
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"ptr() should return a const BasicValue*");
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MOZ_RELEASE_ASSERT(mayValueCRef->GetStatus() == eWasDefaultConstructed);
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mayValue.reset();
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return true;
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}
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static bool
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TestCopyAndMove()
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{
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// Check that we get moves when possible for types that can support both moves
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// and copies.
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Maybe<BasicValue> mayBasicValue = Some(BasicValue(1));
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MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 1);
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mayBasicValue = Some(BasicValue(2));
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MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveAssigned);
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MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 2);
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mayBasicValue.reset();
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mayBasicValue.emplace(BasicValue(3));
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MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMoveConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue->GetTag() == 3);
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// Check that we get copies when moves aren't possible.
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Maybe<BasicValue> mayBasicValue2 = Some(*mayBasicValue);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 3);
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mayBasicValue->SetTag(4);
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mayBasicValue2 = mayBasicValue;
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// This test should work again when we fix bug 1052940.
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//MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyAssigned);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 4);
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mayBasicValue->SetTag(5);
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mayBasicValue2.reset();
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mayBasicValue2.emplace(*mayBasicValue);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasCopyConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetTag() == 5);
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// Check that Move() works. (Another sanity check for move support.)
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Maybe<BasicValue> mayBasicValue3 = Some(Move(*mayBasicValue));
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MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMoveConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue3->GetTag() == 5);
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MOZ_RELEASE_ASSERT(mayBasicValue->GetStatus() == eWasMovedFrom);
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mayBasicValue2->SetTag(6);
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mayBasicValue3 = Some(Move(*mayBasicValue2));
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MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMoveAssigned);
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MOZ_RELEASE_ASSERT(mayBasicValue3->GetTag() == 6);
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MOZ_RELEASE_ASSERT(mayBasicValue2->GetStatus() == eWasMovedFrom);
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Maybe<BasicValue> mayBasicValue4;
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mayBasicValue4.emplace(Move(*mayBasicValue3));
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MOZ_RELEASE_ASSERT(mayBasicValue4->GetStatus() == eWasMoveConstructed);
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MOZ_RELEASE_ASSERT(mayBasicValue4->GetTag() == 6);
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MOZ_RELEASE_ASSERT(mayBasicValue3->GetStatus() == eWasMovedFrom);
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// Check that we always get copies for types that don't support moves.
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// XXX(seth): These tests fail but probably shouldn't. For now we'll just
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// consider using Maybe with types that allow copies but have deleted or
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// private move constructors, or which do not support copy assignment, to
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// be supported only to the extent that we need for existing code to work.
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// These tests should work again when we fix bug 1052940.
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/*
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Maybe<UnmovableValue> mayUnmovableValue = Some(UnmovableValue());
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MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyConstructed);
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mayUnmovableValue = Some(UnmovableValue());
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MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyAssigned);
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mayUnmovableValue.reset();
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mayUnmovableValue.emplace(UnmovableValue());
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MOZ_RELEASE_ASSERT(mayUnmovableValue->GetStatus() == eWasCopyConstructed);
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*/
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// Check that types that only support moves, but not copies, work.
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Maybe<UncopyableValue> mayUncopyableValue = Some(UncopyableValue());
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MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveConstructed);
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mayUncopyableValue = Some(UncopyableValue());
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MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveAssigned);
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mayUncopyableValue.reset();
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mayUncopyableValue.emplace(UncopyableValue());
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MOZ_RELEASE_ASSERT(mayUncopyableValue->GetStatus() == eWasMoveConstructed);
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// Check that types that support neither moves or copies work.
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Maybe<UncopyableUnmovableValue> mayUncopyableUnmovableValue;
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mayUncopyableUnmovableValue.emplace();
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MOZ_RELEASE_ASSERT(mayUncopyableUnmovableValue->GetStatus() == eWasDefaultConstructed);
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mayUncopyableUnmovableValue.reset();
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mayUncopyableUnmovableValue.emplace(0);
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MOZ_RELEASE_ASSERT(mayUncopyableUnmovableValue->GetStatus() == eWasConstructed);
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return true;
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}
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static BasicValue* sStaticBasicValue = nullptr;
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static BasicValue
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MakeBasicValue()
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{
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return BasicValue(9);
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}
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static BasicValue&
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MakeBasicValueRef()
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{
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return *sStaticBasicValue;
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}
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static BasicValue*
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MakeBasicValuePtr()
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{
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return sStaticBasicValue;
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}
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|
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static bool
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TestFunctionalAccessors()
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{
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BasicValue value(9);
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sStaticBasicValue = new BasicValue(9);
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// Check that the 'some' case of functional accessors works.
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Maybe<BasicValue> someValue = Some(BasicValue(3));
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MOZ_RELEASE_ASSERT(someValue.valueOr(value) == BasicValue(3));
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static_assert(IsSame<BasicValue,
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DECLTYPE(someValue.valueOr(value))>::value,
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|
"valueOr should return a BasicValue");
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MOZ_RELEASE_ASSERT(someValue.valueOrFrom(&MakeBasicValue) == BasicValue(3));
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|
static_assert(IsSame<BasicValue,
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DECLTYPE(someValue.valueOrFrom(&MakeBasicValue))>::value,
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|
"valueOrFrom should return a BasicValue");
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|
MOZ_RELEASE_ASSERT(someValue.ptrOr(&value) != &value);
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static_assert(IsSame<BasicValue*,
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DECLTYPE(someValue.ptrOr(&value))>::value,
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"ptrOr should return a BasicValue*");
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MOZ_RELEASE_ASSERT(*someValue.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(3));
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|
static_assert(IsSame<BasicValue*,
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DECLTYPE(someValue.ptrOrFrom(&MakeBasicValuePtr))>::value,
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|
"ptrOrFrom should return a BasicValue*");
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|
MOZ_RELEASE_ASSERT(someValue.refOr(value) == BasicValue(3));
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|
static_assert(IsSame<BasicValue&,
|
|
DECLTYPE(someValue.refOr(value))>::value,
|
|
"refOr should return a BasicValue&");
|
|
MOZ_RELEASE_ASSERT(someValue.refOrFrom(&MakeBasicValueRef) == BasicValue(3));
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|
static_assert(IsSame<BasicValue&,
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|
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;
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MOZ_RELEASE_ASSERT(someValueCRef.valueOr(value) == BasicValue(3));
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|
static_assert(IsSame<BasicValue,
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|
DECLTYPE(someValueCRef.valueOr(value))>::value,
|
|
"valueOr should return a BasicValue");
|
|
MOZ_RELEASE_ASSERT(someValueCRef.valueOrFrom(&MakeBasicValue) == BasicValue(3));
|
|
static_assert(IsSame<BasicValue,
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|
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*");
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|
MOZ_RELEASE_ASSERT(*someValueCRef.ptrOrFrom(&MakeBasicValuePtr) == BasicValue(3));
|
|
static_assert(IsSame<const BasicValue*,
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|
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;
|
|
}
|