googletest/include/gmock/gmock-generated-matchers.h.pump

$$ -*- mode: c++; -*-
$$ This is a Pump source file.  Please use Pump to convert it to
$$ gmock-generated-variadic-actions.h.
$$
$var n = 10  $$ The maximum arity we support.
// Copyright 2008, Google Inc.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Google Mock - a framework for writing C++ mock classes.
//
// This file implements some commonly used variadic matchers.

#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_

#include <sstream>
#include <string>
#include <vector>
#include <gmock/gmock-matchers.h>

namespace testing {
namespace internal {

// Implements ElementsAre() and ElementsAreArray().
template <typename Container>
class ElementsAreMatcherImpl : public MatcherInterface<Container> {
 public:
  typedef GMOCK_REMOVE_CONST(GMOCK_REMOVE_REFERENCE(Container)) RawContainer;
  typedef typename RawContainer::value_type Element;

  // Constructs the matcher from a sequence of element values or
  // element matchers.
  template <typename InputIter>
  ElementsAreMatcherImpl(InputIter first, size_t count) {
    matchers_.reserve(count);
    InputIter it = first;
    for (size_t i = 0; i != count; ++i, ++it) {
      matchers_.push_back(MatcherCast<const Element&>(*it));
    }
  }

  // Returns true iff 'container' matches.
  virtual bool Matches(Container container) const {
    if (container.size() != count())
      return false;

    typename RawContainer::const_iterator container_iter = container.begin();
    for (size_t i = 0; i != count();  ++container_iter, ++i) {
      if (!matchers_[i].Matches(*container_iter))
        return false;
    }

    return true;
  }

  // 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 << "is not empty";
      return;
    }

    *os << "does not 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";
      }
    }
  }

  // Explains why 'container' matches, or doesn't match, this matcher.
  virtual void ExplainMatchResultTo(Container container,
                                    ::std::ostream* os) const {
    if (Matches(container)) {
      // We need to explain why *each* element matches (the obvious
      // ones can be skipped).

      bool reason_printed = false;
      typename RawContainer::const_iterator container_iter = container.begin();
      for (size_t i = 0; i != count(); ++container_iter, ++i) {
        ::std::stringstream ss;
        matchers_[i].ExplainMatchResultTo(*container_iter, &ss);

        const string s = ss.str();
        if (!s.empty()) {
          if (reason_printed) {
            *os << ",\n";
          }
          *os << "element " << i << " " << s;
          reason_printed = true;
        }
      }
    } else {
      // We need to explain why the container doesn't match.
      const size_t actual_count = 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) {
          *os << "has " << Elements(actual_count);
        }
        return;
      }

      // The container has the right size but at least one element
      // doesn't match expectation.  We need to find this element and
      // explain why it doesn't match.
      typename RawContainer::const_iterator container_iter = container.begin();
      for (size_t i = 0; i != count(); ++container_iter, ++i) {
        if (matchers_[i].Matches(*container_iter)) {
          continue;
        }

        *os << "element " << i << " doesn't match";

        ::std::stringstream ss;
        matchers_[i].ExplainMatchResultTo(*container_iter, &ss);
        const string s = ss.str();
        if (!s.empty()) {
          *os << " (" << s << ")";
        }
        return;
      }
    }
  }

 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_;
};

// Implements ElementsAre() of 0-10 arguments.

class ElementsAreMatcher0 {
 public:
  ElementsAreMatcher0() {}

  template <typename Container>
  operator Matcher<Container>() const {
    typedef GMOCK_REMOVE_CONST(GMOCK_REMOVE_REFERENCE(Container)) RawContainer;
    typedef typename RawContainer::value_type Element;

    const Matcher<const Element&>* const matchers = NULL;
    return MakeMatcher(new ElementsAreMatcherImpl<Container>(matchers, 0));
  }
};


$range i 1..n
$for i [[
$range j 1..i
template <$for j, [[typename T$j]]>
class ElementsAreMatcher$i {
 public:
  $if i==1 [[explicit ]]ElementsAreMatcher$i($for j, [[const T$j& e$j]])$if i > 0 [[ : ]]
      $for j, [[e$j[[]]_(e$j)]] {}

  template <typename Container>
  operator Matcher<Container>() const {
    typedef GMOCK_REMOVE_CONST(GMOCK_REMOVE_REFERENCE(Container)) RawContainer;
    typedef typename RawContainer::value_type Element;

    const Matcher<const Element&> matchers[] = {

$for j [[
      MatcherCast<const Element&>(e$j[[]]_),

]]
    };

    return MakeMatcher(new ElementsAreMatcherImpl<Container>(matchers, $i));
  }

 private:

$for j [[
  const T$j& e$j[[]]_;

]]
};


]]
// 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 RawContainer::value_type Element;

    return MakeMatcher(new ElementsAreMatcherImpl<Container>(first_, count_));
  }

 private:
  const T* const first_;
  const size_t count_;
};

}  // namespace internal

// ElementsAre(e0, e1, ..., e_n) matches an STL-style container with
// (n + 1) elements, where the i-th element in the container must
// match the i-th argument in the list.  Each argument of
// ElementsAre() can be either a value or a matcher.  We support up to
// $n arguments.
//
// NOTE: Since ElementsAre() cares about the order of the elements, it
// must not be used with containers whose elements's order is
// undefined (e.g. hash_map).

inline internal::ElementsAreMatcher0 ElementsAre() {
  return internal::ElementsAreMatcher0();
}

$for i [[
$range j 1..i

template <$for j, [[typename T$j]]>
inline internal::ElementsAreMatcher$i<$for j, [[T$j]]> ElementsAre($for j, [[const T$j& e$j]]) {
  return internal::ElementsAreMatcher$i<$for j, [[T$j]]>($for j, [[e$j]]);
}

]]

// ElementsAreArray(array) and ElementAreArray(array, count) are like
// ElementsAre(), except that they take an array of values or
// matchers.  The former form infers the size of 'array', which must
// be a static C-style array.  In the latter form, 'array' can either
// be a static array or a pointer to a dynamically created array.

template <typename T>
inline internal::ElementsAreArrayMatcher<T> ElementsAreArray(
    const T* first, size_t count) {
  return internal::ElementsAreArrayMatcher<T>(first, count);
}

template <typename T, size_t N>
inline internal::ElementsAreArrayMatcher<T>
ElementsAreArray(const T (&array)[N]) {
  return internal::ElementsAreArrayMatcher<T>(array, N);
}

}  // namespace testing

#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_