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Posted to commits@mesos.apache.org by be...@apache.org on 2011/06/05 10:45:35 UTC
svn commit: r1132109 [14/26] - in /incubator/mesos/trunk: ./ src/common/
src/configurator/ src/master/ src/sched/ src/slave/ src/tests/
third_party/gmock-1.5.0/ third_party/gmock-1.5.0/build-aux/
third_party/gmock-1.5.0/fused-src/ third_party/gmock-1.5...
Added: incubator/mesos/trunk/third_party/gmock-1.5.0/include/gmock/gmock-matchers.h
URL: http://svn.apache.org/viewvc/incubator/mesos/trunk/third_party/gmock-1.5.0/include/gmock/gmock-matchers.h?rev=1132109&view=auto
==============================================================================
--- incubator/mesos/trunk/third_party/gmock-1.5.0/include/gmock/gmock-matchers.h (added)
+++ incubator/mesos/trunk/third_party/gmock-1.5.0/include/gmock/gmock-matchers.h Sun Jun 5 08:45:22 2011
@@ -0,0 +1,2920 @@
+// Copyright 2007, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: wan@google.com (Zhanyong Wan)
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used argument matchers. More
+// matchers can be defined by the user implementing the
+// MatcherInterface<T> interface if necessary.
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
+
+#include <algorithm>
+#include <limits>
+#include <ostream> // NOLINT
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include <gmock/gmock-printers.h>
+#include <gmock/internal/gmock-internal-utils.h>
+#include <gmock/internal/gmock-port.h>
+#include <gtest/gtest.h>
+
+namespace testing {
+
+// To implement a matcher Foo for type T, define:
+// 1. a class FooMatcherImpl that implements the
+// MatcherInterface<T> interface, and
+// 2. a factory function that creates a Matcher<T> object from a
+// FooMatcherImpl*.
+//
+// The two-level delegation design makes it possible to allow a user
+// to write "v" instead of "Eq(v)" where a Matcher is expected, which
+// is impossible if we pass matchers by pointers. It also eases
+// ownership management as Matcher objects can now be copied like
+// plain values.
+
+// MatchResultListener is an abstract class. Its << operator can be
+// used by a matcher to explain why a value matches or doesn't match.
+//
+// TODO(wan@google.com): add method
+// bool InterestedInWhy(bool result) const;
+// to indicate whether the listener is interested in why the match
+// result is 'result'.
+class MatchResultListener {
+ public:
+ // Creates a listener object with the given underlying ostream. The
+ // listener does not own the ostream.
+ explicit MatchResultListener(::std::ostream* os) : stream_(os) {}
+ virtual ~MatchResultListener() = 0; // Makes this class abstract.
+
+ // Streams x to the underlying ostream; does nothing if the ostream
+ // is NULL.
+ template <typename T>
+ MatchResultListener& operator<<(const T& x) {
+ if (stream_ != NULL)
+ *stream_ << x;
+ return *this;
+ }
+
+ // Returns the underlying ostream.
+ ::std::ostream* stream() { return stream_; }
+
+ // Returns true iff the listener is interested in an explanation of
+ // the match result. A matcher's MatchAndExplain() method can use
+ // this information to avoid generating the explanation when no one
+ // intends to hear it.
+ bool IsInterested() const { return stream_ != NULL; }
+
+ private:
+ ::std::ostream* const stream_;
+
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(MatchResultListener);
+};
+
+inline MatchResultListener::~MatchResultListener() {
+}
+
+// The implementation of a matcher.
+template <typename T>
+class MatcherInterface {
+ public:
+ virtual ~MatcherInterface() {}
+
+ // Returns true iff the matcher matches x; also explains the match
+ // result to 'listener', in the form of a non-restrictive relative
+ // clause ("which ...", "whose ...", etc) that describes x. For
+ // example, the MatchAndExplain() method of the Pointee(...) matcher
+ // should generate an explanation like "which points to ...".
+ //
+ // You should override this method when defining a new matcher.
+ //
+ // It's the responsibility of the caller (Google Mock) to guarantee
+ // that 'listener' is not NULL. This helps to simplify a matcher's
+ // implementation when it doesn't care about the performance, as it
+ // can talk to 'listener' without checking its validity first.
+ // However, in order to implement dummy listeners efficiently,
+ // listener->stream() may be NULL.
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const = 0;
+
+ // Describes this matcher to an ostream. The function should print
+ // a verb phrase that describes the property a value matching this
+ // matcher should have. The subject of the verb phrase is the value
+ // being matched. For example, the DescribeTo() method of the Gt(7)
+ // matcher prints "is greater than 7".
+ virtual void DescribeTo(::std::ostream* os) const = 0;
+
+ // Describes the negation of this matcher to an ostream. For
+ // example, if the description of this matcher is "is greater than
+ // 7", the negated description could be "is not greater than 7".
+ // You are not required to override this when implementing
+ // MatcherInterface, but it is highly advised so that your matcher
+ // can produce good error messages.
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "not (";
+ DescribeTo(os);
+ *os << ")";
+ }
+};
+
+namespace internal {
+
+// A match result listener that ignores the explanation.
+class DummyMatchResultListener : public MatchResultListener {
+ public:
+ DummyMatchResultListener() : MatchResultListener(NULL) {}
+
+ private:
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(DummyMatchResultListener);
+};
+
+// A match result listener that forwards the explanation to a given
+// ostream. The difference between this and MatchResultListener is
+// that the former is concrete.
+class StreamMatchResultListener : public MatchResultListener {
+ public:
+ explicit StreamMatchResultListener(::std::ostream* os)
+ : MatchResultListener(os) {}
+
+ private:
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(StreamMatchResultListener);
+};
+
+// A match result listener that stores the explanation in a string.
+class StringMatchResultListener : public MatchResultListener {
+ public:
+ StringMatchResultListener() : MatchResultListener(&ss_) {}
+
+ // Returns the explanation heard so far.
+ internal::string str() const { return ss_.str(); }
+
+ private:
+ ::std::stringstream ss_;
+
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener);
+};
+
+// An internal class for implementing Matcher<T>, which will derive
+// from it. We put functionalities common to all Matcher<T>
+// specializations here to avoid code duplication.
+template <typename T>
+class MatcherBase {
+ public:
+ // Returns true iff the matcher matches x; also explains the match
+ // result to 'listener'.
+ bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ return impl_->MatchAndExplain(x, listener);
+ }
+
+ // Returns true iff this matcher matches x.
+ bool Matches(T x) const {
+ DummyMatchResultListener dummy;
+ return MatchAndExplain(x, &dummy);
+ }
+
+ // Describes this matcher to an ostream.
+ void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
+
+ // Describes the negation of this matcher to an ostream.
+ void DescribeNegationTo(::std::ostream* os) const {
+ impl_->DescribeNegationTo(os);
+ }
+
+ // Explains why x matches, or doesn't match, the matcher.
+ void ExplainMatchResultTo(T x, ::std::ostream* os) const {
+ StreamMatchResultListener listener(os);
+ MatchAndExplain(x, &listener);
+ }
+
+ protected:
+ MatcherBase() {}
+
+ // Constructs a matcher from its implementation.
+ explicit MatcherBase(const MatcherInterface<T>* impl)
+ : impl_(impl) {}
+
+ virtual ~MatcherBase() {}
+
+ private:
+ // shared_ptr (util/gtl/shared_ptr.h) and linked_ptr have similar
+ // interfaces. The former dynamically allocates a chunk of memory
+ // to hold the reference count, while the latter tracks all
+ // references using a circular linked list without allocating
+ // memory. It has been observed that linked_ptr performs better in
+ // typical scenarios. However, shared_ptr can out-perform
+ // linked_ptr when there are many more uses of the copy constructor
+ // than the default constructor.
+ //
+ // If performance becomes a problem, we should see if using
+ // shared_ptr helps.
+ ::testing::internal::linked_ptr<const MatcherInterface<T> > impl_;
+};
+
+} // namespace internal
+
+// A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
+// object that can check whether a value of type T matches. The
+// implementation of Matcher<T> is just a linked_ptr to const
+// MatcherInterface<T>, so copying is fairly cheap. Don't inherit
+// from Matcher!
+template <typename T>
+class Matcher : public internal::MatcherBase<T> {
+ public:
+ // Constructs a null matcher. Needed for storing Matcher objects in
+ // STL containers.
+ Matcher() {}
+
+ // Constructs a matcher from its implementation.
+ explicit Matcher(const MatcherInterface<T>* impl)
+ : internal::MatcherBase<T>(impl) {}
+
+ // Implicit constructor here allows people to write
+ // EXPECT_CALL(foo, Bar(5)) instead of EXPECT_CALL(foo, Bar(Eq(5))) sometimes
+ Matcher(T value); // NOLINT
+};
+
+// The following two specializations allow the user to write str
+// instead of Eq(str) and "foo" instead of Eq("foo") when a string
+// matcher is expected.
+template <>
+class Matcher<const internal::string&>
+ : public internal::MatcherBase<const internal::string&> {
+ public:
+ Matcher() {}
+
+ explicit Matcher(const MatcherInterface<const internal::string&>* impl)
+ : internal::MatcherBase<const internal::string&>(impl) {}
+
+ // Allows the user to write str instead of Eq(str) sometimes, where
+ // str is a string object.
+ Matcher(const internal::string& s); // NOLINT
+
+ // Allows the user to write "foo" instead of Eq("foo") sometimes.
+ Matcher(const char* s); // NOLINT
+};
+
+template <>
+class Matcher<internal::string>
+ : public internal::MatcherBase<internal::string> {
+ public:
+ Matcher() {}
+
+ explicit Matcher(const MatcherInterface<internal::string>* impl)
+ : internal::MatcherBase<internal::string>(impl) {}
+
+ // Allows the user to write str instead of Eq(str) sometimes, where
+ // str is a string object.
+ Matcher(const internal::string& s); // NOLINT
+
+ // Allows the user to write "foo" instead of Eq("foo") sometimes.
+ Matcher(const char* s); // NOLINT
+};
+
+// The PolymorphicMatcher class template makes it easy to implement a
+// polymorphic matcher (i.e. a matcher that can match values of more
+// than one type, e.g. Eq(n) and NotNull()).
+//
+// To define a polymorphic matcher, a user should provide an Impl
+// class that has a DescribeTo() method and a DescribeNegationTo()
+// method, and define a member function (or member function template)
+//
+// bool MatchAndExplain(const Value& value,
+// MatchResultListener* listener) const;
+//
+// See the definition of NotNull() for a complete example.
+template <class Impl>
+class PolymorphicMatcher {
+ public:
+ explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
+
+ // Returns a mutable reference to the underlying matcher
+ // implementation object.
+ Impl& mutable_impl() { return impl_; }
+
+ // Returns an immutable reference to the underlying matcher
+ // implementation object.
+ const Impl& impl() const { return impl_; }
+
+ template <typename T>
+ operator Matcher<T>() const {
+ return Matcher<T>(new MonomorphicImpl<T>(impl_));
+ }
+
+ private:
+ template <typename T>
+ class MonomorphicImpl : public MatcherInterface<T> {
+ public:
+ explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ impl_.DescribeTo(os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ impl_.DescribeNegationTo(os);
+ }
+
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ return impl_.MatchAndExplain(x, listener);
+ }
+
+ private:
+ const Impl impl_;
+
+ GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
+ };
+
+ Impl impl_;
+
+ GTEST_DISALLOW_ASSIGN_(PolymorphicMatcher);
+};
+
+// Creates a matcher from its implementation. This is easier to use
+// than the Matcher<T> constructor as it doesn't require you to
+// explicitly write the template argument, e.g.
+//
+// MakeMatcher(foo);
+// vs
+// Matcher<const string&>(foo);
+template <typename T>
+inline Matcher<T> MakeMatcher(const MatcherInterface<T>* impl) {
+ return Matcher<T>(impl);
+};
+
+// Creates a polymorphic matcher from its implementation. This is
+// easier to use than the PolymorphicMatcher<Impl> constructor as it
+// doesn't require you to explicitly write the template argument, e.g.
+//
+// MakePolymorphicMatcher(foo);
+// vs
+// PolymorphicMatcher<TypeOfFoo>(foo);
+template <class Impl>
+inline PolymorphicMatcher<Impl> MakePolymorphicMatcher(const Impl& impl) {
+ return PolymorphicMatcher<Impl>(impl);
+}
+
+// In order to be safe and clear, casting between different matcher
+// types is done explicitly via MatcherCast<T>(m), which takes a
+// matcher m and returns a Matcher<T>. It compiles only when T can be
+// statically converted to the argument type of m.
+template <typename T, typename M>
+Matcher<T> MatcherCast(M m);
+
+// Implements SafeMatcherCast().
+//
+// We use an intermediate class to do the actual safe casting as Nokia's
+// Symbian compiler cannot decide between
+// template <T, M> ... (M) and
+// template <T, U> ... (const Matcher<U>&)
+// for function templates but can for member function templates.
+template <typename T>
+class SafeMatcherCastImpl {
+ public:
+ // This overload handles polymorphic matchers only since monomorphic
+ // matchers are handled by the next one.
+ template <typename M>
+ static inline Matcher<T> Cast(M polymorphic_matcher) {
+ return Matcher<T>(polymorphic_matcher);
+ }
+
+ // This overload handles monomorphic matchers.
+ //
+ // In general, if type T can be implicitly converted to type U, we can
+ // safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is
+ // contravariant): just keep a copy of the original Matcher<U>, convert the
+ // argument from type T to U, and then pass it to the underlying Matcher<U>.
+ // The only exception is when U is a reference and T is not, as the
+ // underlying Matcher<U> may be interested in the argument's address, which
+ // is not preserved in the conversion from T to U.
+ template <typename U>
+ static inline Matcher<T> Cast(const Matcher<U>& matcher) {
+ // Enforce that T can be implicitly converted to U.
+ GMOCK_COMPILE_ASSERT_((internal::ImplicitlyConvertible<T, U>::value),
+ T_must_be_implicitly_convertible_to_U);
+ // Enforce that we are not converting a non-reference type T to a reference
+ // type U.
+ GMOCK_COMPILE_ASSERT_(
+ internal::is_reference<T>::value || !internal::is_reference<U>::value,
+ cannot_convert_non_referentce_arg_to_reference);
+ // In case both T and U are arithmetic types, enforce that the
+ // conversion is not lossy.
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(T)) RawT;
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(U)) RawU;
+ const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther;
+ const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther;
+ GMOCK_COMPILE_ASSERT_(
+ kTIsOther || kUIsOther ||
+ (internal::LosslessArithmeticConvertible<RawT, RawU>::value),
+ conversion_of_arithmetic_types_must_be_lossless);
+ return MatcherCast<T>(matcher);
+ }
+};
+
+template <typename T, typename M>
+inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) {
+ return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
+}
+
+// A<T>() returns a matcher that matches any value of type T.
+template <typename T>
+Matcher<T> A();
+
+// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
+// and MUST NOT BE USED IN USER CODE!!!
+namespace internal {
+
+// If the explanation is not empty, prints it to the ostream.
+inline void PrintIfNotEmpty(const internal::string& explanation,
+ std::ostream* os) {
+ if (explanation != "" && os != NULL) {
+ *os << ", " << explanation;
+ }
+}
+
+// Matches the value against the given matcher, prints the value and explains
+// the match result to the listener. Returns the match result.
+// 'listener' must not be NULL.
+// Value cannot be passed by const reference, because some matchers take a
+// non-const argument.
+template <typename Value, typename T>
+bool MatchPrintAndExplain(Value& value, const Matcher<T>& matcher,
+ MatchResultListener* listener) {
+ if (!listener->IsInterested()) {
+ // If the listener is not interested, we do not need to construct the
+ // inner explanation.
+ return matcher.Matches(value);
+ }
+
+ StringMatchResultListener inner_listener;
+ const bool match = matcher.MatchAndExplain(value, &inner_listener);
+
+ UniversalPrint(value, listener->stream());
+ PrintIfNotEmpty(inner_listener.str(), listener->stream());
+
+ return match;
+}
+
+// An internal helper class for doing compile-time loop on a tuple's
+// fields.
+template <size_t N>
+class TuplePrefix {
+ public:
+ // TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true
+ // iff the first N fields of matcher_tuple matches the first N
+ // fields of value_tuple, respectively.
+ template <typename MatcherTuple, typename ValueTuple>
+ static bool Matches(const MatcherTuple& matcher_tuple,
+ const ValueTuple& value_tuple) {
+ using ::std::tr1::get;
+ return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple)
+ && get<N - 1>(matcher_tuple).Matches(get<N - 1>(value_tuple));
+ }
+
+ // TuplePrefix<N>::ExplainMatchFailuresTo(matchers, values, os)
+ // describes failures in matching the first N fields of matchers
+ // against the first N fields of values. If there is no failure,
+ // nothing will be streamed to os.
+ template <typename MatcherTuple, typename ValueTuple>
+ static void ExplainMatchFailuresTo(const MatcherTuple& matchers,
+ const ValueTuple& values,
+ ::std::ostream* os) {
+ using ::std::tr1::tuple_element;
+ using ::std::tr1::get;
+
+ // First, describes failures in the first N - 1 fields.
+ TuplePrefix<N - 1>::ExplainMatchFailuresTo(matchers, values, os);
+
+ // Then describes the failure (if any) in the (N - 1)-th (0-based)
+ // field.
+ typename tuple_element<N - 1, MatcherTuple>::type matcher =
+ get<N - 1>(matchers);
+ typedef typename tuple_element<N - 1, ValueTuple>::type Value;
+ Value value = get<N - 1>(values);
+ StringMatchResultListener listener;
+ if (!matcher.MatchAndExplain(value, &listener)) {
+ // TODO(wan): include in the message the name of the parameter
+ // as used in MOCK_METHOD*() when possible.
+ *os << " Expected arg #" << N - 1 << ": ";
+ get<N - 1>(matchers).DescribeTo(os);
+ *os << "\n Actual: ";
+ // We remove the reference in type Value to prevent the
+ // universal printer from printing the address of value, which
+ // isn't interesting to the user most of the time. The
+ // matcher's MatchAndExplain() method handles the case when
+ // the address is interesting.
+ internal::UniversalPrint(value, os);
+ PrintIfNotEmpty(listener.str(), os);
+ *os << "\n";
+ }
+ }
+};
+
+// The base case.
+template <>
+class TuplePrefix<0> {
+ public:
+ template <typename MatcherTuple, typename ValueTuple>
+ static bool Matches(const MatcherTuple& /* matcher_tuple */,
+ const ValueTuple& /* value_tuple */) {
+ return true;
+ }
+
+ template <typename MatcherTuple, typename ValueTuple>
+ static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */,
+ const ValueTuple& /* values */,
+ ::std::ostream* /* os */) {}
+};
+
+// TupleMatches(matcher_tuple, value_tuple) returns true iff all
+// matchers in matcher_tuple match the corresponding fields in
+// value_tuple. It is a compiler error if matcher_tuple and
+// value_tuple have different number of fields or incompatible field
+// types.
+template <typename MatcherTuple, typename ValueTuple>
+bool TupleMatches(const MatcherTuple& matcher_tuple,
+ const ValueTuple& value_tuple) {
+ using ::std::tr1::tuple_size;
+ // Makes sure that matcher_tuple and value_tuple have the same
+ // number of fields.
+ GMOCK_COMPILE_ASSERT_(tuple_size<MatcherTuple>::value ==
+ tuple_size<ValueTuple>::value,
+ matcher_and_value_have_different_numbers_of_fields);
+ return TuplePrefix<tuple_size<ValueTuple>::value>::
+ Matches(matcher_tuple, value_tuple);
+}
+
+// Describes failures in matching matchers against values. If there
+// is no failure, nothing will be streamed to os.
+template <typename MatcherTuple, typename ValueTuple>
+void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
+ const ValueTuple& values,
+ ::std::ostream* os) {
+ using ::std::tr1::tuple_size;
+ TuplePrefix<tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
+ matchers, values, os);
+}
+
+// The MatcherCastImpl class template is a helper for implementing
+// MatcherCast(). We need this helper in order to partially
+// specialize the implementation of MatcherCast() (C++ allows
+// class/struct templates to be partially specialized, but not
+// function templates.).
+
+// This general version is used when MatcherCast()'s argument is a
+// polymorphic matcher (i.e. something that can be converted to a
+// Matcher but is not one yet; for example, Eq(value)).
+template <typename T, typename M>
+class MatcherCastImpl {
+ public:
+ static Matcher<T> Cast(M polymorphic_matcher) {
+ return Matcher<T>(polymorphic_matcher);
+ }
+};
+
+// This more specialized version is used when MatcherCast()'s argument
+// is already a Matcher. This only compiles when type T can be
+// statically converted to type U.
+template <typename T, typename U>
+class MatcherCastImpl<T, Matcher<U> > {
+ public:
+ static Matcher<T> Cast(const Matcher<U>& source_matcher) {
+ return Matcher<T>(new Impl(source_matcher));
+ }
+
+ private:
+ class Impl : public MatcherInterface<T> {
+ public:
+ explicit Impl(const Matcher<U>& source_matcher)
+ : source_matcher_(source_matcher) {}
+
+ // We delegate the matching logic to the source matcher.
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ return source_matcher_.MatchAndExplain(static_cast<U>(x), listener);
+ }
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ source_matcher_.DescribeTo(os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ source_matcher_.DescribeNegationTo(os);
+ }
+
+ private:
+ const Matcher<U> source_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(Impl);
+ };
+};
+
+// This even more specialized version is used for efficiently casting
+// a matcher to its own type.
+template <typename T>
+class MatcherCastImpl<T, Matcher<T> > {
+ public:
+ static Matcher<T> Cast(const Matcher<T>& matcher) { return matcher; }
+};
+
+// Implements A<T>().
+template <typename T>
+class AnyMatcherImpl : public MatcherInterface<T> {
+ public:
+ virtual bool MatchAndExplain(
+ T /* x */, MatchResultListener* /* listener */) const { return true; }
+ virtual void DescribeTo(::std::ostream* os) const { *os << "is anything"; }
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ // This is mostly for completeness' safe, as it's not very useful
+ // to write Not(A<bool>()). However we cannot completely rule out
+ // such a possibility, and it doesn't hurt to be prepared.
+ *os << "never matches";
+ }
+};
+
+// Implements _, a matcher that matches any value of any
+// type. This is a polymorphic matcher, so we need a template type
+// conversion operator to make it appearing as a Matcher<T> for any
+// type T.
+class AnythingMatcher {
+ public:
+ template <typename T>
+ operator Matcher<T>() const { return A<T>(); }
+};
+
+// Implements a matcher that compares a given value with a
+// pre-supplied value using one of the ==, <=, <, etc, operators. The
+// two values being compared don't have to have the same type.
+//
+// The matcher defined here is polymorphic (for example, Eq(5) can be
+// used to match an int, a short, a double, etc). Therefore we use
+// a template type conversion operator in the implementation.
+//
+// We define this as a macro in order to eliminate duplicated source
+// code.
+//
+// The following template definition assumes that the Rhs parameter is
+// a "bare" type (i.e. neither 'const T' nor 'T&').
+#define GMOCK_IMPLEMENT_COMPARISON_MATCHER_( \
+ name, op, relation, negated_relation) \
+ template <typename Rhs> class name##Matcher { \
+ public: \
+ explicit name##Matcher(const Rhs& rhs) : rhs_(rhs) {} \
+ template <typename Lhs> \
+ operator Matcher<Lhs>() const { \
+ return MakeMatcher(new Impl<Lhs>(rhs_)); \
+ } \
+ private: \
+ template <typename Lhs> \
+ class Impl : public MatcherInterface<Lhs> { \
+ public: \
+ explicit Impl(const Rhs& rhs) : rhs_(rhs) {} \
+ virtual bool MatchAndExplain(\
+ Lhs lhs, MatchResultListener* /* listener */) const { \
+ return lhs op rhs_; \
+ } \
+ virtual void DescribeTo(::std::ostream* os) const { \
+ *os << relation " "; \
+ UniversalPrinter<Rhs>::Print(rhs_, os); \
+ } \
+ virtual void DescribeNegationTo(::std::ostream* os) const { \
+ *os << negated_relation " "; \
+ UniversalPrinter<Rhs>::Print(rhs_, os); \
+ } \
+ private: \
+ Rhs rhs_; \
+ GTEST_DISALLOW_ASSIGN_(Impl); \
+ }; \
+ Rhs rhs_; \
+ GTEST_DISALLOW_ASSIGN_(name##Matcher); \
+ }
+
+// Implements Eq(v), Ge(v), Gt(v), Le(v), Lt(v), and Ne(v)
+// respectively.
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Eq, ==, "is equal to", "isn't equal to");
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Ge, >=, "is >=", "isn't >=");
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Gt, >, "is >", "isn't >");
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Le, <=, "is <=", "isn't <=");
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Lt, <, "is <", "isn't <");
+GMOCK_IMPLEMENT_COMPARISON_MATCHER_(Ne, !=, "isn't equal to", "is equal to");
+
+#undef GMOCK_IMPLEMENT_COMPARISON_MATCHER_
+
+// Implements the polymorphic IsNull() matcher, which matches any raw or smart
+// pointer that is NULL.
+class IsNullMatcher {
+ public:
+ template <typename Pointer>
+ bool MatchAndExplain(const Pointer& p,
+ MatchResultListener* /* listener */) const {
+ return GetRawPointer(p) == NULL;
+ }
+
+ void DescribeTo(::std::ostream* os) const { *os << "is NULL"; }
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "isn't NULL";
+ }
+};
+
+// Implements the polymorphic NotNull() matcher, which matches any raw or smart
+// pointer that is not NULL.
+class NotNullMatcher {
+ public:
+ template <typename Pointer>
+ bool MatchAndExplain(const Pointer& p,
+ MatchResultListener* /* listener */) const {
+ return GetRawPointer(p) != NULL;
+ }
+
+ void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; }
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "is NULL";
+ }
+};
+
+// Ref(variable) matches any argument that is a reference to
+// 'variable'. This matcher is polymorphic as it can match any
+// super type of the type of 'variable'.
+//
+// The RefMatcher template class implements Ref(variable). It can
+// only be instantiated with a reference type. This prevents a user
+// from mistakenly using Ref(x) to match a non-reference function
+// argument. For example, the following will righteously cause a
+// compiler error:
+//
+// int n;
+// Matcher<int> m1 = Ref(n); // This won't compile.
+// Matcher<int&> m2 = Ref(n); // This will compile.
+template <typename T>
+class RefMatcher;
+
+template <typename T>
+class RefMatcher<T&> {
+ // Google Mock is a generic framework and thus needs to support
+ // mocking any function types, including those that take non-const
+ // reference arguments. Therefore the template parameter T (and
+ // Super below) can be instantiated to either a const type or a
+ // non-const type.
+ public:
+ // RefMatcher() takes a T& instead of const T&, as we want the
+ // compiler to catch using Ref(const_value) as a matcher for a
+ // non-const reference.
+ explicit RefMatcher(T& x) : object_(x) {} // NOLINT
+
+ template <typename Super>
+ operator Matcher<Super&>() const {
+ // By passing object_ (type T&) to Impl(), which expects a Super&,
+ // we make sure that Super is a super type of T. In particular,
+ // this catches using Ref(const_value) as a matcher for a
+ // non-const reference, as you cannot implicitly convert a const
+ // reference to a non-const reference.
+ return MakeMatcher(new Impl<Super>(object_));
+ }
+
+ private:
+ template <typename Super>
+ class Impl : public MatcherInterface<Super&> {
+ public:
+ explicit Impl(Super& x) : object_(x) {} // NOLINT
+
+ // MatchAndExplain() takes a Super& (as opposed to const Super&)
+ // in order to match the interface MatcherInterface<Super&>.
+ virtual bool MatchAndExplain(
+ Super& x, MatchResultListener* listener) const {
+ *listener << "which is located @" << static_cast<const void*>(&x);
+ return &x == &object_;
+ }
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "references the variable ";
+ UniversalPrinter<Super&>::Print(object_, os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "does not reference the variable ";
+ UniversalPrinter<Super&>::Print(object_, os);
+ }
+
+ private:
+ const Super& object_;
+
+ GTEST_DISALLOW_ASSIGN_(Impl);
+ };
+
+ T& object_;
+
+ GTEST_DISALLOW_ASSIGN_(RefMatcher);
+};
+
+// Polymorphic helper functions for narrow and wide string matchers.
+inline bool CaseInsensitiveCStringEquals(const char* lhs, const char* rhs) {
+ return String::CaseInsensitiveCStringEquals(lhs, rhs);
+}
+
+inline bool CaseInsensitiveCStringEquals(const wchar_t* lhs,
+ const wchar_t* rhs) {
+ return String::CaseInsensitiveWideCStringEquals(lhs, rhs);
+}
+
+// String comparison for narrow or wide strings that can have embedded NUL
+// characters.
+template <typename StringType>
+bool CaseInsensitiveStringEquals(const StringType& s1,
+ const StringType& s2) {
+ // Are the heads equal?
+ if (!CaseInsensitiveCStringEquals(s1.c_str(), s2.c_str())) {
+ return false;
+ }
+
+ // Skip the equal heads.
+ const typename StringType::value_type nul = 0;
+ const size_t i1 = s1.find(nul), i2 = s2.find(nul);
+
+ // Are we at the end of either s1 or s2?
+ if (i1 == StringType::npos || i2 == StringType::npos) {
+ return i1 == i2;
+ }
+
+ // Are the tails equal?
+ return CaseInsensitiveStringEquals(s1.substr(i1 + 1), s2.substr(i2 + 1));
+}
+
+// String matchers.
+
+// Implements equality-based string matchers like StrEq, StrCaseNe, and etc.
+template <typename StringType>
+class StrEqualityMatcher {
+ public:
+ typedef typename StringType::const_pointer ConstCharPointer;
+
+ StrEqualityMatcher(const StringType& str, bool expect_eq,
+ bool case_sensitive)
+ : string_(str), expect_eq_(expect_eq), case_sensitive_(case_sensitive) {}
+
+ // When expect_eq_ is true, returns true iff s is equal to string_;
+ // otherwise returns true iff s is not equal to string_.
+ bool MatchAndExplain(ConstCharPointer s,
+ MatchResultListener* listener) const {
+ if (s == NULL) {
+ return !expect_eq_;
+ }
+ return MatchAndExplain(StringType(s), listener);
+ }
+
+ bool MatchAndExplain(const StringType& s,
+ MatchResultListener* /* listener */) const {
+ const bool eq = case_sensitive_ ? s == string_ :
+ CaseInsensitiveStringEquals(s, string_);
+ return expect_eq_ == eq;
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ DescribeToHelper(expect_eq_, os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ DescribeToHelper(!expect_eq_, os);
+ }
+
+ private:
+ void DescribeToHelper(bool expect_eq, ::std::ostream* os) const {
+ *os << (expect_eq ? "is " : "isn't ");
+ *os << "equal to ";
+ if (!case_sensitive_) {
+ *os << "(ignoring case) ";
+ }
+ UniversalPrinter<StringType>::Print(string_, os);
+ }
+
+ const StringType string_;
+ const bool expect_eq_;
+ const bool case_sensitive_;
+
+ GTEST_DISALLOW_ASSIGN_(StrEqualityMatcher);
+};
+
+// Implements the polymorphic HasSubstr(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class HasSubstrMatcher {
+ public:
+ typedef typename StringType::const_pointer ConstCharPointer;
+
+ explicit HasSubstrMatcher(const StringType& substring)
+ : substring_(substring) {}
+
+ // These overloaded methods allow HasSubstr(substring) to be used as a
+ // Matcher<T> as long as T can be converted to string. Returns true
+ // iff s contains substring_ as a substring.
+ bool MatchAndExplain(ConstCharPointer s,
+ MatchResultListener* listener) const {
+ return s != NULL && MatchAndExplain(StringType(s), listener);
+ }
+
+ bool MatchAndExplain(const StringType& s,
+ MatchResultListener* /* listener */) const {
+ return s.find(substring_) != StringType::npos;
+ }
+
+ // Describes what this matcher matches.
+ void DescribeTo(::std::ostream* os) const {
+ *os << "has substring ";
+ UniversalPrinter<StringType>::Print(substring_, os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "has no substring ";
+ UniversalPrinter<StringType>::Print(substring_, os);
+ }
+
+ private:
+ const StringType substring_;
+
+ GTEST_DISALLOW_ASSIGN_(HasSubstrMatcher);
+};
+
+// Implements the polymorphic StartsWith(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class StartsWithMatcher {
+ public:
+ typedef typename StringType::const_pointer ConstCharPointer;
+
+ explicit StartsWithMatcher(const StringType& prefix) : prefix_(prefix) {
+ }
+
+ // These overloaded methods allow StartsWith(prefix) to be used as a
+ // Matcher<T> as long as T can be converted to string. Returns true
+ // iff s starts with prefix_.
+ bool MatchAndExplain(ConstCharPointer s,
+ MatchResultListener* listener) const {
+ return s != NULL && MatchAndExplain(StringType(s), listener);
+ }
+
+ bool MatchAndExplain(const StringType& s,
+ MatchResultListener* /* listener */) const {
+ return s.length() >= prefix_.length() &&
+ s.substr(0, prefix_.length()) == prefix_;
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "starts with ";
+ UniversalPrinter<StringType>::Print(prefix_, os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't start with ";
+ UniversalPrinter<StringType>::Print(prefix_, os);
+ }
+
+ private:
+ const StringType prefix_;
+
+ GTEST_DISALLOW_ASSIGN_(StartsWithMatcher);
+};
+
+// Implements the polymorphic EndsWith(substring) matcher, which
+// can be used as a Matcher<T> as long as T can be converted to a
+// string.
+template <typename StringType>
+class EndsWithMatcher {
+ public:
+ typedef typename StringType::const_pointer ConstCharPointer;
+
+ explicit EndsWithMatcher(const StringType& suffix) : suffix_(suffix) {}
+
+ // These overloaded methods allow EndsWith(suffix) to be used as a
+ // Matcher<T> as long as T can be converted to string. Returns true
+ // iff s ends with suffix_.
+ bool MatchAndExplain(ConstCharPointer s,
+ MatchResultListener* listener) const {
+ return s != NULL && MatchAndExplain(StringType(s), listener);
+ }
+
+ bool MatchAndExplain(const StringType& s,
+ MatchResultListener* /* listener */) const {
+ return s.length() >= suffix_.length() &&
+ s.substr(s.length() - suffix_.length()) == suffix_;
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "ends with ";
+ UniversalPrinter<StringType>::Print(suffix_, os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't end with ";
+ UniversalPrinter<StringType>::Print(suffix_, os);
+ }
+
+ private:
+ const StringType suffix_;
+
+ GTEST_DISALLOW_ASSIGN_(EndsWithMatcher);
+};
+
+// Implements polymorphic matchers MatchesRegex(regex) and
+// ContainsRegex(regex), which can be used as a Matcher<T> as long as
+// T can be converted to a string.
+class MatchesRegexMatcher {
+ public:
+ MatchesRegexMatcher(const RE* regex, bool full_match)
+ : regex_(regex), full_match_(full_match) {}
+
+ // These overloaded methods allow MatchesRegex(regex) to be used as
+ // a Matcher<T> as long as T can be converted to string. Returns
+ // true iff s matches regular expression regex. When full_match_ is
+ // true, a full match is done; otherwise a partial match is done.
+ bool MatchAndExplain(const char* s,
+ MatchResultListener* listener) const {
+ return s != NULL && MatchAndExplain(internal::string(s), listener);
+ }
+
+ bool MatchAndExplain(const internal::string& s,
+ MatchResultListener* /* listener */) const {
+ return full_match_ ? RE::FullMatch(s, *regex_) :
+ RE::PartialMatch(s, *regex_);
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << (full_match_ ? "matches" : "contains")
+ << " regular expression ";
+ UniversalPrinter<internal::string>::Print(regex_->pattern(), os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't " << (full_match_ ? "match" : "contain")
+ << " regular expression ";
+ UniversalPrinter<internal::string>::Print(regex_->pattern(), os);
+ }
+
+ private:
+ const internal::linked_ptr<const RE> regex_;
+ const bool full_match_;
+
+ GTEST_DISALLOW_ASSIGN_(MatchesRegexMatcher);
+};
+
+// Implements a matcher that compares the two fields of a 2-tuple
+// using one of the ==, <=, <, etc, operators. The two fields being
+// compared don't have to have the same type.
+//
+// The matcher defined here is polymorphic (for example, Eq() can be
+// used to match a tuple<int, short>, a tuple<const long&, double>,
+// etc). Therefore we use a template type conversion operator in the
+// implementation.
+//
+// We define this as a macro in order to eliminate duplicated source
+// code.
+#define GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(name, op) \
+ class name##2Matcher { \
+ public: \
+ template <typename T1, typename T2> \
+ operator Matcher<const ::std::tr1::tuple<T1, T2>&>() const { \
+ return MakeMatcher(new Impl<T1, T2>); \
+ } \
+ private: \
+ template <typename T1, typename T2> \
+ class Impl : public MatcherInterface<const ::std::tr1::tuple<T1, T2>&> { \
+ public: \
+ virtual bool MatchAndExplain( \
+ const ::std::tr1::tuple<T1, T2>& args, \
+ MatchResultListener* /* listener */) const { \
+ return ::std::tr1::get<0>(args) op ::std::tr1::get<1>(args); \
+ } \
+ virtual void DescribeTo(::std::ostream* os) const { \
+ *os << "are a pair (x, y) where x " #op " y"; \
+ } \
+ virtual void DescribeNegationTo(::std::ostream* os) const { \
+ *os << "are a pair (x, y) where x " #op " y is false"; \
+ } \
+ }; \
+ }
+
+// Implements Eq(), Ge(), Gt(), Le(), Lt(), and Ne() respectively.
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Eq, ==);
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Ge, >=);
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Gt, >);
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Le, <=);
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Lt, <);
+GMOCK_IMPLEMENT_COMPARISON2_MATCHER_(Ne, !=);
+
+#undef GMOCK_IMPLEMENT_COMPARISON2_MATCHER_
+
+// Implements the Not(...) matcher for a particular argument type T.
+// We do not nest it inside the NotMatcher class template, as that
+// will prevent different instantiations of NotMatcher from sharing
+// the same NotMatcherImpl<T> class.
+template <typename T>
+class NotMatcherImpl : public MatcherInterface<T> {
+ public:
+ explicit NotMatcherImpl(const Matcher<T>& matcher)
+ : matcher_(matcher) {}
+
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ return !matcher_.MatchAndExplain(x, listener);
+ }
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ matcher_.DescribeNegationTo(os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ matcher_.DescribeTo(os);
+ }
+
+ private:
+ const Matcher<T> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(NotMatcherImpl);
+};
+
+// Implements the Not(m) matcher, which matches a value that doesn't
+// match matcher m.
+template <typename InnerMatcher>
+class NotMatcher {
+ public:
+ explicit NotMatcher(InnerMatcher matcher) : matcher_(matcher) {}
+
+ // This template type conversion operator allows Not(m) to be used
+ // to match any type m can match.
+ template <typename T>
+ operator Matcher<T>() const {
+ return Matcher<T>(new NotMatcherImpl<T>(SafeMatcherCast<T>(matcher_)));
+ }
+
+ private:
+ InnerMatcher matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(NotMatcher);
+};
+
+// Implements the AllOf(m1, m2) matcher for a particular argument type
+// T. We do not nest it inside the BothOfMatcher class template, as
+// that will prevent different instantiations of BothOfMatcher from
+// sharing the same BothOfMatcherImpl<T> class.
+template <typename T>
+class BothOfMatcherImpl : public MatcherInterface<T> {
+ public:
+ BothOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
+ : matcher1_(matcher1), matcher2_(matcher2) {}
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "(";
+ matcher1_.DescribeTo(os);
+ *os << ") and (";
+ matcher2_.DescribeTo(os);
+ *os << ")";
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "(";
+ matcher1_.DescribeNegationTo(os);
+ *os << ") or (";
+ matcher2_.DescribeNegationTo(os);
+ *os << ")";
+ }
+
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ // If either matcher1_ or matcher2_ doesn't match x, we only need
+ // to explain why one of them fails.
+ StringMatchResultListener listener1;
+ if (!matcher1_.MatchAndExplain(x, &listener1)) {
+ *listener << listener1.str();
+ return false;
+ }
+
+ StringMatchResultListener listener2;
+ if (!matcher2_.MatchAndExplain(x, &listener2)) {
+ *listener << listener2.str();
+ return false;
+ }
+
+ // Otherwise we need to explain why *both* of them match.
+ const internal::string s1 = listener1.str();
+ const internal::string s2 = listener2.str();
+
+ if (s1 == "") {
+ *listener << s2;
+ } else {
+ *listener << s1;
+ if (s2 != "") {
+ *listener << ", and " << s2;
+ }
+ }
+ return true;
+ }
+
+ private:
+ const Matcher<T> matcher1_;
+ const Matcher<T> matcher2_;
+
+ GTEST_DISALLOW_ASSIGN_(BothOfMatcherImpl);
+};
+
+// Used for implementing the AllOf(m_1, ..., m_n) matcher, which
+// matches a value that matches all of the matchers m_1, ..., and m_n.
+template <typename Matcher1, typename Matcher2>
+class BothOfMatcher {
+ public:
+ BothOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
+ : matcher1_(matcher1), matcher2_(matcher2) {}
+
+ // This template type conversion operator allows a
+ // BothOfMatcher<Matcher1, Matcher2> object to match any type that
+ // both Matcher1 and Matcher2 can match.
+ template <typename T>
+ operator Matcher<T>() const {
+ return Matcher<T>(new BothOfMatcherImpl<T>(SafeMatcherCast<T>(matcher1_),
+ SafeMatcherCast<T>(matcher2_)));
+ }
+
+ private:
+ Matcher1 matcher1_;
+ Matcher2 matcher2_;
+
+ GTEST_DISALLOW_ASSIGN_(BothOfMatcher);
+};
+
+// Implements the AnyOf(m1, m2) matcher for a particular argument type
+// T. We do not nest it inside the AnyOfMatcher class template, as
+// that will prevent different instantiations of AnyOfMatcher from
+// sharing the same EitherOfMatcherImpl<T> class.
+template <typename T>
+class EitherOfMatcherImpl : public MatcherInterface<T> {
+ public:
+ EitherOfMatcherImpl(const Matcher<T>& matcher1, const Matcher<T>& matcher2)
+ : matcher1_(matcher1), matcher2_(matcher2) {}
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "(";
+ matcher1_.DescribeTo(os);
+ *os << ") or (";
+ matcher2_.DescribeTo(os);
+ *os << ")";
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "(";
+ matcher1_.DescribeNegationTo(os);
+ *os << ") and (";
+ matcher2_.DescribeNegationTo(os);
+ *os << ")";
+ }
+
+ virtual bool MatchAndExplain(T x, MatchResultListener* listener) const {
+ // If either matcher1_ or matcher2_ matches x, we just need to
+ // explain why *one* of them matches.
+ StringMatchResultListener listener1;
+ if (matcher1_.MatchAndExplain(x, &listener1)) {
+ *listener << listener1.str();
+ return true;
+ }
+
+ StringMatchResultListener listener2;
+ if (matcher2_.MatchAndExplain(x, &listener2)) {
+ *listener << listener2.str();
+ return true;
+ }
+
+ // Otherwise we need to explain why *both* of them fail.
+ const internal::string s1 = listener1.str();
+ const internal::string s2 = listener2.str();
+
+ if (s1 == "") {
+ *listener << s2;
+ } else {
+ *listener << s1;
+ if (s2 != "") {
+ *listener << ", and " << s2;
+ }
+ }
+ return false;
+ }
+
+ private:
+ const Matcher<T> matcher1_;
+ const Matcher<T> matcher2_;
+
+ GTEST_DISALLOW_ASSIGN_(EitherOfMatcherImpl);
+};
+
+// Used for implementing the AnyOf(m_1, ..., m_n) matcher, which
+// matches a value that matches at least one of the matchers m_1, ...,
+// and m_n.
+template <typename Matcher1, typename Matcher2>
+class EitherOfMatcher {
+ public:
+ EitherOfMatcher(Matcher1 matcher1, Matcher2 matcher2)
+ : matcher1_(matcher1), matcher2_(matcher2) {}
+
+ // This template type conversion operator allows a
+ // EitherOfMatcher<Matcher1, Matcher2> object to match any type that
+ // both Matcher1 and Matcher2 can match.
+ template <typename T>
+ operator Matcher<T>() const {
+ return Matcher<T>(new EitherOfMatcherImpl<T>(
+ SafeMatcherCast<T>(matcher1_), SafeMatcherCast<T>(matcher2_)));
+ }
+
+ private:
+ Matcher1 matcher1_;
+ Matcher2 matcher2_;
+
+ GTEST_DISALLOW_ASSIGN_(EitherOfMatcher);
+};
+
+// Used for implementing Truly(pred), which turns a predicate into a
+// matcher.
+template <typename Predicate>
+class TrulyMatcher {
+ public:
+ explicit TrulyMatcher(Predicate pred) : predicate_(pred) {}
+
+ // This method template allows Truly(pred) to be used as a matcher
+ // for type T where T is the argument type of predicate 'pred'. The
+ // argument is passed by reference as the predicate may be
+ // interested in the address of the argument.
+ template <typename T>
+ bool MatchAndExplain(T& x, // NOLINT
+ MatchResultListener* /* listener */) const {
+#if GTEST_OS_WINDOWS
+ // MSVC warns about converting a value into bool (warning 4800).
+#pragma warning(push) // Saves the current warning state.
+#pragma warning(disable:4800) // Temporarily disables warning 4800.
+#endif // GTEST_OS_WINDOWS
+ return predicate_(x);
+#if GTEST_OS_WINDOWS
+#pragma warning(pop) // Restores the warning state.
+#endif // GTEST_OS_WINDOWS
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "satisfies the given predicate";
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't satisfy the given predicate";
+ }
+
+ private:
+ Predicate predicate_;
+
+ GTEST_DISALLOW_ASSIGN_(TrulyMatcher);
+};
+
+// Used for implementing Matches(matcher), which turns a matcher into
+// a predicate.
+template <typename M>
+class MatcherAsPredicate {
+ public:
+ explicit MatcherAsPredicate(M matcher) : matcher_(matcher) {}
+
+ // This template operator() allows Matches(m) to be used as a
+ // predicate on type T where m is a matcher on type T.
+ //
+ // The argument x is passed by reference instead of by value, as
+ // some matcher may be interested in its address (e.g. as in
+ // Matches(Ref(n))(x)).
+ template <typename T>
+ bool operator()(const T& x) const {
+ // We let matcher_ commit to a particular type here instead of
+ // when the MatcherAsPredicate object was constructed. This
+ // allows us to write Matches(m) where m is a polymorphic matcher
+ // (e.g. Eq(5)).
+ //
+ // If we write Matcher<T>(matcher_).Matches(x) here, it won't
+ // compile when matcher_ has type Matcher<const T&>; if we write
+ // Matcher<const T&>(matcher_).Matches(x) here, it won't compile
+ // when matcher_ has type Matcher<T>; if we just write
+ // matcher_.Matches(x), it won't compile when matcher_ is
+ // polymorphic, e.g. Eq(5).
+ //
+ // MatcherCast<const T&>() is necessary for making the code work
+ // in all of the above situations.
+ return MatcherCast<const T&>(matcher_).Matches(x);
+ }
+
+ private:
+ M matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(MatcherAsPredicate);
+};
+
+// For implementing ASSERT_THAT() and EXPECT_THAT(). The template
+// argument M must be a type that can be converted to a matcher.
+template <typename M>
+class PredicateFormatterFromMatcher {
+ public:
+ explicit PredicateFormatterFromMatcher(const M& m) : matcher_(m) {}
+
+ // This template () operator allows a PredicateFormatterFromMatcher
+ // object to act as a predicate-formatter suitable for using with
+ // Google Test's EXPECT_PRED_FORMAT1() macro.
+ template <typename T>
+ AssertionResult operator()(const char* value_text, const T& x) const {
+ // We convert matcher_ to a Matcher<const T&> *now* instead of
+ // when the PredicateFormatterFromMatcher object was constructed,
+ // as matcher_ may be polymorphic (e.g. NotNull()) and we won't
+ // know which type to instantiate it to until we actually see the
+ // type of x here.
+ //
+ // We write MatcherCast<const T&>(matcher_) instead of
+ // Matcher<const T&>(matcher_), as the latter won't compile when
+ // matcher_ has type Matcher<T> (e.g. An<int>()).
+ const Matcher<const T&> matcher = MatcherCast<const T&>(matcher_);
+ StringMatchResultListener listener;
+ if (MatchPrintAndExplain(x, matcher, &listener))
+ return AssertionSuccess();
+
+ ::std::stringstream ss;
+ ss << "Value of: " << value_text << "\n"
+ << "Expected: ";
+ matcher.DescribeTo(&ss);
+ ss << "\n Actual: " << listener.str();
+ return AssertionFailure() << ss.str();
+ }
+
+ private:
+ const M matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(PredicateFormatterFromMatcher);
+};
+
+// A helper function for converting a matcher to a predicate-formatter
+// without the user needing to explicitly write the type. This is
+// used for implementing ASSERT_THAT() and EXPECT_THAT().
+template <typename M>
+inline PredicateFormatterFromMatcher<M>
+MakePredicateFormatterFromMatcher(const M& matcher) {
+ return PredicateFormatterFromMatcher<M>(matcher);
+}
+
+// Implements the polymorphic floating point equality matcher, which
+// matches two float values using ULP-based approximation. The
+// template is meant to be instantiated with FloatType being either
+// float or double.
+template <typename FloatType>
+class FloatingEqMatcher {
+ public:
+ // Constructor for FloatingEqMatcher.
+ // The matcher's input will be compared with rhs. The matcher treats two
+ // NANs as equal if nan_eq_nan is true. Otherwise, under IEEE standards,
+ // equality comparisons between NANs will always return false.
+ FloatingEqMatcher(FloatType rhs, bool nan_eq_nan) :
+ rhs_(rhs), nan_eq_nan_(nan_eq_nan) {}
+
+ // Implements floating point equality matcher as a Matcher<T>.
+ template <typename T>
+ class Impl : public MatcherInterface<T> {
+ public:
+ Impl(FloatType rhs, bool nan_eq_nan) :
+ rhs_(rhs), nan_eq_nan_(nan_eq_nan) {}
+
+ virtual bool MatchAndExplain(T value,
+ MatchResultListener* /* listener */) const {
+ const FloatingPoint<FloatType> lhs(value), rhs(rhs_);
+
+ // Compares NaNs first, if nan_eq_nan_ is true.
+ if (nan_eq_nan_ && lhs.is_nan()) {
+ return rhs.is_nan();
+ }
+
+ return lhs.AlmostEquals(rhs);
+ }
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ // os->precision() returns the previously set precision, which we
+ // store to restore the ostream to its original configuration
+ // after outputting.
+ const ::std::streamsize old_precision = os->precision(
+ ::std::numeric_limits<FloatType>::digits10 + 2);
+ if (FloatingPoint<FloatType>(rhs_).is_nan()) {
+ if (nan_eq_nan_) {
+ *os << "is NaN";
+ } else {
+ *os << "never matches";
+ }
+ } else {
+ *os << "is approximately " << rhs_;
+ }
+ os->precision(old_precision);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ // As before, get original precision.
+ const ::std::streamsize old_precision = os->precision(
+ ::std::numeric_limits<FloatType>::digits10 + 2);
+ if (FloatingPoint<FloatType>(rhs_).is_nan()) {
+ if (nan_eq_nan_) {
+ *os << "isn't NaN";
+ } else {
+ *os << "is anything";
+ }
+ } else {
+ *os << "isn't approximately " << rhs_;
+ }
+ // Restore original precision.
+ os->precision(old_precision);
+ }
+
+ private:
+ const FloatType rhs_;
+ const bool nan_eq_nan_;
+
+ GTEST_DISALLOW_ASSIGN_(Impl);
+ };
+
+ // The following 3 type conversion operators allow FloatEq(rhs) and
+ // NanSensitiveFloatEq(rhs) to be used as a Matcher<float>, a
+ // Matcher<const float&>, or a Matcher<float&>, but nothing else.
+ // (While Google's C++ coding style doesn't allow arguments passed
+ // by non-const reference, we may see them in code not conforming to
+ // the style. Therefore Google Mock needs to support them.)
+ operator Matcher<FloatType>() const {
+ return MakeMatcher(new Impl<FloatType>(rhs_, nan_eq_nan_));
+ }
+
+ operator Matcher<const FloatType&>() const {
+ return MakeMatcher(new Impl<const FloatType&>(rhs_, nan_eq_nan_));
+ }
+
+ operator Matcher<FloatType&>() const {
+ return MakeMatcher(new Impl<FloatType&>(rhs_, nan_eq_nan_));
+ }
+ private:
+ const FloatType rhs_;
+ const bool nan_eq_nan_;
+
+ GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher);
+};
+
+// Implements the Pointee(m) matcher for matching a pointer whose
+// pointee matches matcher m. The pointer can be either raw or smart.
+template <typename InnerMatcher>
+class PointeeMatcher {
+ public:
+ explicit PointeeMatcher(const InnerMatcher& matcher) : matcher_(matcher) {}
+
+ // This type conversion operator template allows Pointee(m) to be
+ // used as a matcher for any pointer type whose pointee type is
+ // compatible with the inner matcher, where type Pointer can be
+ // either a raw pointer or a smart pointer.
+ //
+ // The reason we do this instead of relying on
+ // MakePolymorphicMatcher() is that the latter is not flexible
+ // enough for implementing the DescribeTo() method of Pointee().
+ template <typename Pointer>
+ operator Matcher<Pointer>() const {
+ return MakeMatcher(new Impl<Pointer>(matcher_));
+ }
+
+ private:
+ // The monomorphic implementation that works for a particular pointer type.
+ template <typename Pointer>
+ class Impl : public MatcherInterface<Pointer> {
+ public:
+ typedef typename PointeeOf<GMOCK_REMOVE_CONST_( // NOLINT
+ GMOCK_REMOVE_REFERENCE_(Pointer))>::type Pointee;
+
+ explicit Impl(const InnerMatcher& matcher)
+ : matcher_(MatcherCast<const Pointee&>(matcher)) {}
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "points to a value that ";
+ matcher_.DescribeTo(os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "does not point to a value that ";
+ matcher_.DescribeTo(os);
+ }
+
+ virtual bool MatchAndExplain(Pointer pointer,
+ MatchResultListener* listener) const {
+ if (GetRawPointer(pointer) == NULL)
+ return false;
+
+ *listener << "which points to ";
+ return MatchPrintAndExplain(*pointer, matcher_, listener);
+ }
+
+ private:
+ const Matcher<const Pointee&> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(Impl);
+ };
+
+ const InnerMatcher matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(PointeeMatcher);
+};
+
+// Implements the Field() matcher for matching a field (i.e. member
+// variable) of an object.
+template <typename Class, typename FieldType>
+class FieldMatcher {
+ public:
+ FieldMatcher(FieldType Class::*field,
+ const Matcher<const FieldType&>& matcher)
+ : field_(field), matcher_(matcher) {}
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "is an object whose given field ";
+ matcher_.DescribeTo(os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "is an object whose given field ";
+ matcher_.DescribeNegationTo(os);
+ }
+
+ template <typename T>
+ bool MatchAndExplain(const T& value, MatchResultListener* listener) const {
+ return MatchAndExplainImpl(
+ typename ::testing::internal::
+ is_pointer<GMOCK_REMOVE_CONST_(T)>::type(),
+ value, listener);
+ }
+
+ private:
+ // The first argument of MatchAndExplainImpl() is needed to help
+ // Symbian's C++ compiler choose which overload to use. Its type is
+ // true_type iff the Field() matcher is used to match a pointer.
+ bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
+ MatchResultListener* listener) const {
+ *listener << "whose given field is ";
+ return MatchPrintAndExplain(obj.*field_, matcher_, listener);
+ }
+
+ bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
+ MatchResultListener* listener) const {
+ if (p == NULL)
+ return false;
+
+ *listener << "which points to an object ";
+ // Since *p has a field, it must be a class/struct/union type and
+ // thus cannot be a pointer. Therefore we pass false_type() as
+ // the first argument.
+ return MatchAndExplainImpl(false_type(), *p, listener);
+ }
+
+ const FieldType Class::*field_;
+ const Matcher<const FieldType&> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(FieldMatcher);
+};
+
+// Implements the Property() matcher for matching a property
+// (i.e. return value of a getter method) of an object.
+template <typename Class, typename PropertyType>
+class PropertyMatcher {
+ public:
+ // The property may have a reference type, so 'const PropertyType&'
+ // may cause double references and fail to compile. That's why we
+ // need GMOCK_REFERENCE_TO_CONST, which works regardless of
+ // PropertyType being a reference or not.
+ typedef GMOCK_REFERENCE_TO_CONST_(PropertyType) RefToConstProperty;
+
+ PropertyMatcher(PropertyType (Class::*property)() const,
+ const Matcher<RefToConstProperty>& matcher)
+ : property_(property), matcher_(matcher) {}
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "is an object whose given property ";
+ matcher_.DescribeTo(os);
+ }
+
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "is an object whose given property ";
+ matcher_.DescribeNegationTo(os);
+ }
+
+ template <typename T>
+ bool MatchAndExplain(const T&value, MatchResultListener* listener) const {
+ return MatchAndExplainImpl(
+ typename ::testing::internal::
+ is_pointer<GMOCK_REMOVE_CONST_(T)>::type(),
+ value, listener);
+ }
+
+ private:
+ // The first argument of MatchAndExplainImpl() is needed to help
+ // Symbian's C++ compiler choose which overload to use. Its type is
+ // true_type iff the Property() matcher is used to match a pointer.
+ bool MatchAndExplainImpl(false_type /* is_not_pointer */, const Class& obj,
+ MatchResultListener* listener) const {
+ *listener << "whose given property is ";
+ // Cannot pass the return value (for example, int) to MatchPrintAndExplain,
+ // which takes a non-const reference as argument.
+ RefToConstProperty result = (obj.*property_)();
+ return MatchPrintAndExplain(result, matcher_, listener);
+ }
+
+ bool MatchAndExplainImpl(true_type /* is_pointer */, const Class* p,
+ MatchResultListener* listener) const {
+ if (p == NULL)
+ return false;
+
+ *listener << "which points to an object ";
+ // Since *p has a property method, it must be a class/struct/union
+ // type and thus cannot be a pointer. Therefore we pass
+ // false_type() as the first argument.
+ return MatchAndExplainImpl(false_type(), *p, listener);
+ }
+
+ PropertyType (Class::*property_)() const;
+ const Matcher<RefToConstProperty> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(PropertyMatcher);
+};
+
+// Type traits specifying various features of different functors for ResultOf.
+// The default template specifies features for functor objects.
+// Functor classes have to typedef argument_type and result_type
+// to be compatible with ResultOf.
+template <typename Functor>
+struct CallableTraits {
+ typedef typename Functor::result_type ResultType;
+ typedef Functor StorageType;
+
+ static void CheckIsValid(Functor /* functor */) {}
+ template <typename T>
+ static ResultType Invoke(Functor f, T arg) { return f(arg); }
+};
+
+// Specialization for function pointers.
+template <typename ArgType, typename ResType>
+struct CallableTraits<ResType(*)(ArgType)> {
+ typedef ResType ResultType;
+ typedef ResType(*StorageType)(ArgType);
+
+ static void CheckIsValid(ResType(*f)(ArgType)) {
+ GTEST_CHECK_(f != NULL)
+ << "NULL function pointer is passed into ResultOf().";
+ }
+ template <typename T>
+ static ResType Invoke(ResType(*f)(ArgType), T arg) {
+ return (*f)(arg);
+ }
+};
+
+// Implements the ResultOf() matcher for matching a return value of a
+// unary function of an object.
+template <typename Callable>
+class ResultOfMatcher {
+ public:
+ typedef typename CallableTraits<Callable>::ResultType ResultType;
+
+ ResultOfMatcher(Callable callable, const Matcher<ResultType>& matcher)
+ : callable_(callable), matcher_(matcher) {
+ CallableTraits<Callable>::CheckIsValid(callable_);
+ }
+
+ template <typename T>
+ operator Matcher<T>() const {
+ return Matcher<T>(new Impl<T>(callable_, matcher_));
+ }
+
+ private:
+ typedef typename CallableTraits<Callable>::StorageType CallableStorageType;
+
+ template <typename T>
+ class Impl : public MatcherInterface<T> {
+ public:
+ Impl(CallableStorageType callable, const Matcher<ResultType>& matcher)
+ : callable_(callable), matcher_(matcher) {}
+
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "is mapped by the given callable to a value that ";
+ matcher_.DescribeTo(os);
+ }
+
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "is mapped by the given callable to a value that ";
+ matcher_.DescribeNegationTo(os);
+ }
+
+ virtual bool MatchAndExplain(T obj, MatchResultListener* listener) const {
+ *listener << "which is mapped by the given callable to ";
+ // Cannot pass the return value (for example, int) to
+ // MatchPrintAndExplain, which takes a non-const reference as argument.
+ ResultType result =
+ CallableTraits<Callable>::template Invoke<T>(callable_, obj);
+ return MatchPrintAndExplain(result, matcher_, listener);
+ }
+
+ private:
+ // Functors often define operator() as non-const method even though
+ // they are actualy stateless. But we need to use them even when
+ // 'this' is a const pointer. It's the user's responsibility not to
+ // use stateful callables with ResultOf(), which does't guarantee
+ // how many times the callable will be invoked.
+ mutable CallableStorageType callable_;
+ const Matcher<ResultType> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(Impl);
+ }; // class Impl
+
+ const CallableStorageType callable_;
+ const Matcher<ResultType> matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(ResultOfMatcher);
+};
+
+// Implements an equality matcher for any STL-style container whose elements
+// support ==. This matcher is like Eq(), but its failure explanations provide
+// more detailed information that is useful when the container is used as a set.
+// The failure message reports elements that are in one of the operands but not
+// the other. The failure messages do not report duplicate or out-of-order
+// elements in the containers (which don't properly matter to sets, but can
+// occur if the containers are vectors or lists, for example).
+//
+// Uses the container's const_iterator, value_type, operator ==,
+// begin(), and end().
+template <typename Container>
+class ContainerEqMatcher {
+ public:
+ typedef internal::StlContainerView<Container> View;
+ typedef typename View::type StlContainer;
+ typedef typename View::const_reference StlContainerReference;
+
+ // We make a copy of rhs in case the elements in it are modified
+ // after this matcher is created.
+ explicit ContainerEqMatcher(const Container& rhs) : rhs_(View::Copy(rhs)) {
+ // Makes sure the user doesn't instantiate this class template
+ // with a const or reference type.
+ testing::StaticAssertTypeEq<Container,
+ GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(Container))>();
+ }
+
+ void DescribeTo(::std::ostream* os) const {
+ *os << "equals ";
+ UniversalPrinter<StlContainer>::Print(rhs_, os);
+ }
+ void DescribeNegationTo(::std::ostream* os) const {
+ *os << "does not equal ";
+ UniversalPrinter<StlContainer>::Print(rhs_, os);
+ }
+
+ template <typename LhsContainer>
+ bool MatchAndExplain(const LhsContainer& lhs,
+ MatchResultListener* listener) const {
+ // GMOCK_REMOVE_CONST_() is needed to work around an MSVC 8.0 bug
+ // that causes LhsContainer to be a const type sometimes.
+ typedef internal::StlContainerView<GMOCK_REMOVE_CONST_(LhsContainer)>
+ LhsView;
+ typedef typename LhsView::type LhsStlContainer;
+ StlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
+ if (lhs_stl_container == rhs_)
+ return true;
+
+ ::std::ostream* const os = listener->stream();
+ if (os != NULL) {
+ // Something is different. Check for extra values first.
+ bool printed_header = false;
+ for (typename LhsStlContainer::const_iterator it =
+ lhs_stl_container.begin();
+ it != lhs_stl_container.end(); ++it) {
+ if (internal::ArrayAwareFind(rhs_.begin(), rhs_.end(), *it) ==
+ rhs_.end()) {
+ if (printed_header) {
+ *os << ", ";
+ } else {
+ *os << "which has these unexpected elements: ";
+ printed_header = true;
+ }
+ UniversalPrinter<typename LhsStlContainer::value_type>::
+ Print(*it, os);
+ }
+ }
+
+ // Now check for missing values.
+ bool printed_header2 = false;
+ for (typename StlContainer::const_iterator it = rhs_.begin();
+ it != rhs_.end(); ++it) {
+ if (internal::ArrayAwareFind(
+ lhs_stl_container.begin(), lhs_stl_container.end(), *it) ==
+ lhs_stl_container.end()) {
+ if (printed_header2) {
+ *os << ", ";
+ } else {
+ *os << (printed_header ? ",\nand" : "which")
+ << " doesn't have these expected elements: ";
+ printed_header2 = true;
+ }
+ UniversalPrinter<typename StlContainer::value_type>::Print(*it, os);
+ }
+ }
+ }
+
+ return false;
+ }
+
+ private:
+ const StlContainer rhs_;
+
+ GTEST_DISALLOW_ASSIGN_(ContainerEqMatcher);
+};
+
+// Implements Contains(element_matcher) for the given argument type Container.
+template <typename Container>
+class ContainsMatcherImpl : public MatcherInterface<Container> {
+ public:
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(Container)) RawContainer;
+ typedef StlContainerView<RawContainer> View;
+ typedef typename View::type StlContainer;
+ typedef typename View::const_reference StlContainerReference;
+ typedef typename StlContainer::value_type Element;
+
+ template <typename InnerMatcher>
+ explicit ContainsMatcherImpl(InnerMatcher inner_matcher)
+ : inner_matcher_(
+ testing::SafeMatcherCast<const Element&>(inner_matcher)) {}
+
+ // Describes what this matcher does.
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "contains at least one element that ";
+ inner_matcher_.DescribeTo(os);
+ }
+
+ // Describes what the negation of this matcher does.
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't contain any element that ";
+ inner_matcher_.DescribeTo(os);
+ }
+
+ virtual bool MatchAndExplain(Container container,
+ MatchResultListener* listener) const {
+ StlContainerReference stl_container = View::ConstReference(container);
+ size_t i = 0;
+ for (typename StlContainer::const_iterator it = stl_container.begin();
+ it != stl_container.end(); ++it, ++i) {
+ StringMatchResultListener inner_listener;
+ if (inner_matcher_.MatchAndExplain(*it, &inner_listener)) {
+ *listener << "whose element #" << i << " matches";
+ PrintIfNotEmpty(inner_listener.str(), listener->stream());
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private:
+ const Matcher<const Element&> inner_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(ContainsMatcherImpl);
+};
+
+// Implements polymorphic Contains(element_matcher).
+template <typename M>
+class ContainsMatcher {
+ public:
+ explicit ContainsMatcher(M m) : inner_matcher_(m) {}
+
+ template <typename Container>
+ operator Matcher<Container>() const {
+ return MakeMatcher(new ContainsMatcherImpl<Container>(inner_matcher_));
+ }
+
+ private:
+ const M inner_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(ContainsMatcher);
+};
+
+// Implements Key(inner_matcher) for the given argument pair type.
+// Key(inner_matcher) matches an std::pair whose 'first' field matches
+// inner_matcher. For example, Contains(Key(Ge(5))) can be used to match an
+// std::map that contains at least one element whose key is >= 5.
+template <typename PairType>
+class KeyMatcherImpl : public MatcherInterface<PairType> {
+ public:
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(PairType)) RawPairType;
+ typedef typename RawPairType::first_type KeyType;
+
+ template <typename InnerMatcher>
+ explicit KeyMatcherImpl(InnerMatcher inner_matcher)
+ : inner_matcher_(
+ testing::SafeMatcherCast<const KeyType&>(inner_matcher)) {
+ }
+
+ // Returns true iff 'key_value.first' (the key) matches the inner matcher.
+ virtual bool MatchAndExplain(PairType key_value,
+ MatchResultListener* listener) const {
+ StringMatchResultListener inner_listener;
+ const bool match = inner_matcher_.MatchAndExplain(key_value.first,
+ &inner_listener);
+ const internal::string explanation = inner_listener.str();
+ if (explanation != "") {
+ *listener << "whose first field is a value " << explanation;
+ }
+ return match;
+ }
+
+ // Describes what this matcher does.
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "has a key that ";
+ inner_matcher_.DescribeTo(os);
+ }
+
+ // Describes what the negation of this matcher does.
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "doesn't have a key that ";
+ inner_matcher_.DescribeTo(os);
+ }
+
+ private:
+ const Matcher<const KeyType&> inner_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(KeyMatcherImpl);
+};
+
+// Implements polymorphic Key(matcher_for_key).
+template <typename M>
+class KeyMatcher {
+ public:
+ explicit KeyMatcher(M m) : matcher_for_key_(m) {}
+
+ template <typename PairType>
+ operator Matcher<PairType>() const {
+ return MakeMatcher(new KeyMatcherImpl<PairType>(matcher_for_key_));
+ }
+
+ private:
+ const M matcher_for_key_;
+
+ GTEST_DISALLOW_ASSIGN_(KeyMatcher);
+};
+
+// Implements Pair(first_matcher, second_matcher) for the given argument pair
+// type with its two matchers. See Pair() function below.
+template <typename PairType>
+class PairMatcherImpl : public MatcherInterface<PairType> {
+ public:
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(PairType)) RawPairType;
+ typedef typename RawPairType::first_type FirstType;
+ typedef typename RawPairType::second_type SecondType;
+
+ template <typename FirstMatcher, typename SecondMatcher>
+ PairMatcherImpl(FirstMatcher first_matcher, SecondMatcher second_matcher)
+ : first_matcher_(
+ testing::SafeMatcherCast<const FirstType&>(first_matcher)),
+ second_matcher_(
+ testing::SafeMatcherCast<const SecondType&>(second_matcher)) {
+ }
+
+ // Describes what this matcher does.
+ virtual void DescribeTo(::std::ostream* os) const {
+ *os << "has a first field that ";
+ first_matcher_.DescribeTo(os);
+ *os << ", and has a second field that ";
+ second_matcher_.DescribeTo(os);
+ }
+
+ // Describes what the negation of this matcher does.
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ *os << "has a first field that ";
+ first_matcher_.DescribeNegationTo(os);
+ *os << ", or has a second field that ";
+ second_matcher_.DescribeNegationTo(os);
+ }
+
+ // Returns true iff 'a_pair.first' matches first_matcher and 'a_pair.second'
+ // matches second_matcher.
+ virtual bool MatchAndExplain(PairType a_pair,
+ MatchResultListener* listener) const {
+ if (!listener->IsInterested()) {
+ // If the listener is not interested, we don't need to construct the
+ // explanation.
+ return first_matcher_.Matches(a_pair.first) &&
+ second_matcher_.Matches(a_pair.second);
+ }
+ StringMatchResultListener first_inner_listener;
+ if (!first_matcher_.MatchAndExplain(a_pair.first,
+ &first_inner_listener)) {
+ *listener << "whose first field does not match";
+ PrintIfNotEmpty(first_inner_listener.str(), listener->stream());
+ return false;
+ }
+ StringMatchResultListener second_inner_listener;
+ if (!second_matcher_.MatchAndExplain(a_pair.second,
+ &second_inner_listener)) {
+ *listener << "whose second field does not match";
+ PrintIfNotEmpty(second_inner_listener.str(), listener->stream());
+ return false;
+ }
+ ExplainSuccess(first_inner_listener.str(), second_inner_listener.str(),
+ listener);
+ return true;
+ }
+
+ private:
+ void ExplainSuccess(const internal::string& first_explanation,
+ const internal::string& second_explanation,
+ MatchResultListener* listener) const {
+ *listener << "whose both fields match";
+ if (first_explanation != "") {
+ *listener << ", where the first field is a value " << first_explanation;
+ }
+ if (second_explanation != "") {
+ *listener << ", ";
+ if (first_explanation != "") {
+ *listener << "and ";
+ } else {
+ *listener << "where ";
+ }
+ *listener << "the second field is a value " << second_explanation;
+ }
+ }
+
+ const Matcher<const FirstType&> first_matcher_;
+ const Matcher<const SecondType&> second_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(PairMatcherImpl);
+};
+
+// Implements polymorphic Pair(first_matcher, second_matcher).
+template <typename FirstMatcher, typename SecondMatcher>
+class PairMatcher {
+ public:
+ PairMatcher(FirstMatcher first_matcher, SecondMatcher second_matcher)
+ : first_matcher_(first_matcher), second_matcher_(second_matcher) {}
+
+ template <typename PairType>
+ operator Matcher<PairType> () const {
+ return MakeMatcher(
+ new PairMatcherImpl<PairType>(
+ first_matcher_, second_matcher_));
+ }
+
+ private:
+ const FirstMatcher first_matcher_;
+ const SecondMatcher second_matcher_;
+
+ GTEST_DISALLOW_ASSIGN_(PairMatcher);
+};
+
+// Implements ElementsAre() and ElementsAreArray().
+template <typename Container>
+class ElementsAreMatcherImpl : public MatcherInterface<Container> {
+ public:
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(Container)) RawContainer;
+ typedef internal::StlContainerView<RawContainer> View;
+ typedef typename View::type StlContainer;
+ typedef typename View::const_reference StlContainerReference;
+ typedef typename StlContainer::value_type Element;
+
+ // Constructs the matcher from a sequence of element values or
+ // element matchers.
+ template <typename InputIter>
+ ElementsAreMatcherImpl(InputIter first, size_t a_count) {
+ matchers_.reserve(a_count);
+ InputIter it = first;
+ for (size_t i = 0; i != a_count; ++i, ++it) {
+ matchers_.push_back(MatcherCast<const Element&>(*it));
+ }
+ }
+
+ // Describes what this matcher does.
+ virtual void DescribeTo(::std::ostream* os) const {
+ if (count() == 0) {
+ *os << "is empty";
+ } else if (count() == 1) {
+ *os << "has 1 element that ";
+ matchers_[0].DescribeTo(os);
+ } else {
+ *os << "has " << Elements(count()) << " where\n";
+ for (size_t i = 0; i != count(); ++i) {
+ *os << "element #" << i << " ";
+ matchers_[i].DescribeTo(os);
+ if (i + 1 < count()) {
+ *os << ",\n";
+ }
+ }
+ }
+ }
+
+ // Describes what the negation of this matcher does.
+ virtual void DescribeNegationTo(::std::ostream* os) const {
+ if (count() == 0) {
+ *os << "isn't empty";
+ return;
+ }
+
+ *os << "doesn't have " << Elements(count()) << ", or\n";
+ for (size_t i = 0; i != count(); ++i) {
+ *os << "element #" << i << " ";
+ matchers_[i].DescribeNegationTo(os);
+ if (i + 1 < count()) {
+ *os << ", or\n";
+ }
+ }
+ }
+
+ virtual bool MatchAndExplain(Container container,
+ MatchResultListener* listener) const {
+ StlContainerReference stl_container = View::ConstReference(container);
+ const size_t actual_count = stl_container.size();
+ if (actual_count != count()) {
+ // The element count doesn't match. If the container is empty,
+ // there's no need to explain anything as Google Mock already
+ // prints the empty container. Otherwise we just need to show
+ // how many elements there actually are.
+ if (actual_count != 0) {
+ *listener << "which has " << Elements(actual_count);
+ }
+ return false;
+ }
+
+ typename StlContainer::const_iterator it = stl_container.begin();
+ // explanations[i] is the explanation of the element at index i.
+ std::vector<internal::string> explanations(count());
+ for (size_t i = 0; i != count(); ++it, ++i) {
+ StringMatchResultListener s;
+ if (matchers_[i].MatchAndExplain(*it, &s)) {
+ explanations[i] = s.str();
+ } else {
+ // The container has the right size but the i-th element
+ // doesn't match its expectation.
+ *listener << "whose element #" << i << " doesn't match";
+ PrintIfNotEmpty(s.str(), listener->stream());
+ return false;
+ }
+ }
+
+ // Every element matches its expectation. We need to explain why
+ // (the obvious ones can be skipped).
+ bool reason_printed = false;
+ for (size_t i = 0; i != count(); ++i) {
+ const internal::string& s = explanations[i];
+ if (!s.empty()) {
+ if (reason_printed) {
+ *listener << ",\nand ";
+ }
+ *listener << "whose element #" << i << " matches, " << s;
+ reason_printed = true;
+ }
+ }
+
+ return true;
+ }
+
+ private:
+ static Message Elements(size_t count) {
+ return Message() << count << (count == 1 ? " element" : " elements");
+ }
+
+ size_t count() const { return matchers_.size(); }
+ std::vector<Matcher<const Element&> > matchers_;
+
+ GTEST_DISALLOW_ASSIGN_(ElementsAreMatcherImpl);
+};
+
+// Implements ElementsAre() of 0 arguments.
+class ElementsAreMatcher0 {
+ public:
+ ElementsAreMatcher0() {}
+
+ template <typename Container>
+ operator Matcher<Container>() const {
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(Container))
+ RawContainer;
+ typedef typename internal::StlContainerView<RawContainer>::type::value_type
+ Element;
+
+ const Matcher<const Element&>* const matchers = NULL;
+ return MakeMatcher(new ElementsAreMatcherImpl<Container>(matchers, 0));
+ }
+};
+
+// Implements ElementsAreArray().
+template <typename T>
+class ElementsAreArrayMatcher {
+ public:
+ ElementsAreArrayMatcher(const T* first, size_t count) :
+ first_(first), count_(count) {}
+
+ template <typename Container>
+ operator Matcher<Container>() const {
+ typedef GMOCK_REMOVE_CONST_(GMOCK_REMOVE_REFERENCE_(Container))
+ RawContainer;
+ typedef typename internal::StlContainerView<RawContainer>::type::value_type
+ Element;
+
+ return MakeMatcher(new ElementsAreMatcherImpl<Container>(first_, count_));
+ }
+
+ private:
+ const T* const first_;
+ const size_t count_;
+
+ GTEST_DISALLOW_ASSIGN_(ElementsAreArrayMatcher);
+};
+
+// Constants denoting interpolations in a matcher description string.
+const int kTupleInterpolation = -1; // "%(*)s"
+const int kPercentInterpolation = -2; // "%%"
+const int kInvalidInterpolation = -3; // "%" followed by invalid text
+
+// Records the location and content of an interpolation.
+struct Interpolation {
+ Interpolation(const char* start, const char* end, int param)
+ : start_pos(start), end_pos(end), param_index(param) {}
+
+ // Points to the start of the interpolation (the '%' character).
+ const char* start_pos;
+ // Points to the first character after the interpolation.
+ const char* end_pos;
+ // 0-based index of the interpolated matcher parameter;
+ // kTupleInterpolation for "%(*)s"; kPercentInterpolation for "%%".
+ int param_index;
+};
+
+typedef ::std::vector<Interpolation> Interpolations;
+
+// Parses a matcher description string and returns a vector of
+// interpolations that appear in the string; generates non-fatal
+// failures iff 'description' is an invalid matcher description.
+// 'param_names' is a NULL-terminated array of parameter names in the
+// order they appear in the MATCHER_P*() parameter list.
+Interpolations ValidateMatcherDescription(
+ const char* param_names[], const char* description);
+
+// Returns the actual matcher description, given the matcher name,
+// user-supplied description template string, interpolations in the
+// string, and the printed values of the matcher parameters.
+string FormatMatcherDescription(
+ const char* matcher_name, const char* description,
+ const Interpolations& interp, const Strings& param_values);
+
+} // namespace internal
+
+// Implements MatcherCast().
+template <typename T, typename M>
+inline Matcher<T> MatcherCast(M matcher) {
+ return internal::MatcherCastImpl<T, M>::Cast(matcher);
+}
+
+// _ is a matcher that matches anything of any type.
+//
+// This definition is fine as:
+//
+// 1. The C++ standard permits using the name _ in a namespace that
+// is not the global namespace or ::std.
+// 2. The AnythingMatcher class has no data member or constructor,
+// so it's OK to create global variables of this type.
+// 3. c-style has approved of using _ in this case.
+const internal::AnythingMatcher _ = {};
+// Creates a matcher that matches any value of the given type T.
+template <typename T>
+inline Matcher<T> A() { return MakeMatcher(new internal::AnyMatcherImpl<T>()); }
+
+// Creates a matcher that matches any value of the given type T.
+template <typename T>
+inline Matcher<T> An() { return A<T>(); }
+
+// Creates a polymorphic matcher that matches anything equal to x.
+// Note: if the parameter of Eq() were declared as const T&, Eq("foo")
+// wouldn't compile.
+template <typename T>
+inline internal::EqMatcher<T> Eq(T x) { return internal::EqMatcher<T>(x); }
+
+// Constructs a Matcher<T> from a 'value' of type T. The constructed
+// matcher matches any value that's equal to 'value'.
+template <typename T>
+Matcher<T>::Matcher(T value) { *this = Eq(value); }
+
+// Creates a monomorphic matcher that matches anything with type Lhs
+// and equal to rhs. A user may need to use this instead of Eq(...)
+// in order to resolve an overloading ambiguity.
+//
+// TypedEq<T>(x) is just a convenient short-hand for Matcher<T>(Eq(x))
+// or Matcher<T>(x), but more readable than the latter.
+//
+// We could define similar monomorphic matchers for other comparison
+// operations (e.g. TypedLt, TypedGe, and etc), but decided not to do
+// it yet as those are used much less than Eq() in practice. A user
+// can always write Matcher<T>(Lt(5)) to be explicit about the type,
+// for example.
+template <typename Lhs, typename Rhs>
+inline Matcher<Lhs> TypedEq(const Rhs& rhs) { return Eq(rhs); }
+
+// Creates a polymorphic matcher that matches anything >= x.
+template <typename Rhs>
+inline internal::GeMatcher<Rhs> Ge(Rhs x) {
+ return internal::GeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything > x.
+template <typename Rhs>
+inline internal::GtMatcher<Rhs> Gt(Rhs x) {
+ return internal::GtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything <= x.
+template <typename Rhs>
+inline internal::LeMatcher<Rhs> Le(Rhs x) {
+ return internal::LeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything < x.
+template <typename Rhs>
+inline internal::LtMatcher<Rhs> Lt(Rhs x) {
+ return internal::LtMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches anything != x.
+template <typename Rhs>
+inline internal::NeMatcher<Rhs> Ne(Rhs x) {
+ return internal::NeMatcher<Rhs>(x);
+}
+
+// Creates a polymorphic matcher that matches any NULL pointer.
+inline PolymorphicMatcher<internal::IsNullMatcher > IsNull() {
+ return MakePolymorphicMatcher(internal::IsNullMatcher());
+}
+
+// Creates a polymorphic matcher that matches any non-NULL pointer.
+// This is convenient as Not(NULL) doesn't compile (the compiler
+// thinks that that expression is comparing a pointer with an integer).
+inline PolymorphicMatcher<internal::NotNullMatcher > NotNull() {
+ return MakePolymorphicMatcher(internal::NotNullMatcher());
+}
+
+// Creates a polymorphic matcher that matches any argument that
+// references variable x.
+template <typename T>
+inline internal::RefMatcher<T&> Ref(T& x) { // NOLINT
+ return internal::RefMatcher<T&>(x);
+}
+
+// Creates a matcher that matches any double argument approximately
+// equal to rhs, where two NANs are considered unequal.
+inline internal::FloatingEqMatcher<double> DoubleEq(double rhs) {
+ return internal::FloatingEqMatcher<double>(rhs, false);
+}
+
+// Creates a matcher that matches any double argument approximately
+// equal to rhs, including NaN values when rhs is NaN.
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