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[gmock] Teach gmock ElementsAre and BeginEndDistanceIs matchers to

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handle generic ranges by using std::begin and std::end rather than
requiring things to look exactly like an STL container.

Much of the credit for this goes to Dave Blaikie who helped me figure
out the right incantations.

This will probably be re-designed when I send this to the maintainers of
gmock, so I've instead structured it to change is little as possible
while it is a local patch. That makes it somewhat ugly, but I think a focused
change is better for getting this to work for LLVM today and letting the
upstream maintainers figure out the correct long-term pattern.

Differential Revision: https://reviews.llvm.org/D28288

llvm-svn: 291623
This commit is contained in:
Chandler Carruth 2017-01-11 00:16:03 +00:00
parent 87ecb0edfb
commit 983d1e34f3
1 changed files with 28 additions and 12 deletions
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40
utils/unittest/googlemock/include/gmock/gmock-matchers.h
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@ -2462,11 +2462,14 @@ class BeginEndDistanceIsMatcher {
template <typename Container>
class Impl : public MatcherInterface<Container> {
public:
typedef internal::StlContainerView<
GTEST_REMOVE_REFERENCE_AND_CONST_(Container)> ContainerView;
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
typedef internal::StlContainerView<RawContainer> View;
typedef typename View::type StlContainer;
typedef typename View::const_reference StlContainerReference;
typedef decltype(std::begin(
std::declval<StlContainerReference>())) StlContainerConstIterator;
typedef typename std::iterator_traits<
typename ContainerView::type::const_iterator>::difference_type
DistanceType;
StlContainerConstIterator>::difference_type DistanceType;
explicit Impl(const DistanceMatcher& distance_matcher)
: distance_matcher_(MatcherCast<DistanceType>(distance_matcher)) {}
@ -3111,7 +3114,10 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
typedef internal::StlContainerView<RawContainer> View;
typedef typename View::type StlContainer;
typedef typename View::const_reference StlContainerReference;
typedef typename StlContainer::value_type Element;
typedef decltype(std::begin(
std::declval<StlContainerReference>())) StlContainerConstIterator;
typedef typename std::remove_reference<decltype(
*std::declval<StlContainerConstIterator &>())>::type Element;
// Constructs the matcher from a sequence of element values or
// element matchers.
@ -3168,7 +3174,7 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
// explanations[i] is the explanation of the element at index i.
::std::vector<internal::string> explanations(count());
StlContainerReference stl_container = View::ConstReference(container);
typename StlContainer::const_iterator it = stl_container.begin();
StlContainerConstIterator it = stl_container.begin();
size_t exam_pos = 0;
bool mismatch_found = false; // Have we found a mismatched element yet?
@ -3350,8 +3356,10 @@ class UnorderedElementsAreMatcherImpl
typedef internal::StlContainerView<RawContainer> View;
typedef typename View::type StlContainer;
typedef typename View::const_reference StlContainerReference;
typedef typename StlContainer::const_iterator StlContainerConstIterator;
typedef typename StlContainer::value_type Element;
typedef decltype(std::begin(
std::declval<StlContainerReference>())) StlContainerConstIterator;
typedef typename std::remove_reference<decltype(
*std::declval<StlContainerConstIterator &>())>::type Element;
// Constructs the matcher from a sequence of element values or
// element matchers.
@ -3456,8 +3464,12 @@ class UnorderedElementsAreMatcher {
template <typename Container>
operator Matcher<Container>() const {
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
typedef typename internal::StlContainerView<RawContainer>::type View;
typedef typename View::value_type Element;
typedef internal::StlContainerView<RawContainer> View;
typedef typename View::const_reference StlContainerReference;
typedef decltype(std::begin(
std::declval<StlContainerReference>())) StlContainerConstIterator;
typedef typename std::remove_reference<decltype(
*std::declval<StlContainerConstIterator &>())>::type Element;
typedef ::std::vector<Matcher<const Element&> > MatcherVec;
MatcherVec matchers;
matchers.reserve(::testing::tuple_size<MatcherTuple>::value);
@ -3481,8 +3493,12 @@ class ElementsAreMatcher {
template <typename Container>
operator Matcher<Container>() const {
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Container) RawContainer;
typedef typename internal::StlContainerView<RawContainer>::type View;
typedef typename View::value_type Element;
typedef internal::StlContainerView<RawContainer> View;
typedef typename View::const_reference StlContainerReference;
typedef decltype(std::begin(
std::declval<StlContainerReference>())) StlContainerConstIterator;
typedef typename std::remove_reference<decltype(
*std::declval<StlContainerConstIterator &>())>::type Element;
typedef ::std::vector<Matcher<const Element&> > MatcherVec;
MatcherVec matchers;
matchers.reserve(::testing::tuple_size<MatcherTuple>::value);