googletest/googlemock/include/gmock/gmock-generated-actions.h.pump

$$ -*- mode: c++; -*-
$$ This is a Pump source file. Please use Pump to convert it to
$$ gmock-generated-actions.h.
$$
$var n = 10  $$ The maximum arity we support.
$$}} This meta comment fixes auto-indentation in editors.
// 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.


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

// GOOGLETEST_CM0002 DO NOT DELETE

#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_

#include <memory>
#include <utility>

#include "gmock/gmock-actions.h"
#include "gmock/internal/gmock-port.h"

namespace testing {
namespace internal {

// A macro from the ACTION* family (defined later in this file)
// defines an action that can be used in a mock function.  Typically,
// these actions only care about a subset of the arguments of the mock
// function.  For example, if such an action only uses the second
// argument, it can be used in any mock function that takes >= 2
// arguments where the type of the second argument is compatible.
//
// Therefore, the action implementation must be prepared to take more
// arguments than it needs.  The ExcessiveArg type is used to
// represent those excessive arguments.  In order to keep the compiler
// error messages tractable, we define it in the testing namespace
// instead of testing::internal.  However, this is an INTERNAL TYPE
// and subject to change without notice, so a user MUST NOT USE THIS
// TYPE DIRECTLY.
struct ExcessiveArg {};

// A helper class needed for implementing the ACTION* macros.
template <typename Result, class Impl>
class ActionHelper {
 public:
$range i 0..n
$for i

[[
$var template = [[$if i==0 [[]] $else [[
$range j 0..i-1
  template <$for j, [[typename A$j]]>
]]]]
$range j 0..i-1
$var As = [[$for j, [[A$j]]]]
$var as = [[$for j, [[std::get<$j>(args)]]]]
$range k 1..n-i
$var eas = [[$for k, [[ExcessiveArg()]]]]
$var arg_list = [[$if (i==0) | (i==n) [[$as$eas]] $else [[$as, $eas]]]]
$template
  static Result Perform(Impl* impl, const ::std::tuple<$As>& args) {
    return impl->template gmock_PerformImpl<$As>(args, $arg_list);
  }

]]
};

}  // namespace internal
}  // namespace testing

// The ACTION* family of macros can be used in a namespace scope to
// define custom actions easily.  The syntax:
//
//   ACTION(name) { statements; }
//
// will define an action with the given name that executes the
// statements.  The value returned by the statements will be used as
// the return value of the action.  Inside the statements, you can
// refer to the K-th (0-based) argument of the mock function by
// 'argK', and refer to its type by 'argK_type'.  For example:
//
//   ACTION(IncrementArg1) {
//     arg1_type temp = arg1;
//     return ++(*temp);
//   }
//
// allows you to write
//
//   ...WillOnce(IncrementArg1());
//
// You can also refer to the entire argument tuple and its type by
// 'args' and 'args_type', and refer to the mock function type and its
// return type by 'function_type' and 'return_type'.
//
// Note that you don't need to specify the types of the mock function
// arguments.  However rest assured that your code is still type-safe:
// you'll get a compiler error if *arg1 doesn't support the ++
// operator, or if the type of ++(*arg1) isn't compatible with the
// mock function's return type, for example.
//
// Sometimes you'll want to parameterize the action.   For that you can use
// another macro:
//
//   ACTION_P(name, param_name) { statements; }
//
// For example:
//
//   ACTION_P(Add, n) { return arg0 + n; }
//
// will allow you to write:
//
//   ...WillOnce(Add(5));
//
// Note that you don't need to provide the type of the parameter
// either.  If you need to reference the type of a parameter named
// 'foo', you can write 'foo_type'.  For example, in the body of
// ACTION_P(Add, n) above, you can write 'n_type' to refer to the type
// of 'n'.
//
// We also provide ACTION_P2, ACTION_P3, ..., up to ACTION_P$n to support
// multi-parameter actions.
//
// For the purpose of typing, you can view
//
//   ACTION_Pk(Foo, p1, ..., pk) { ... }
//
// as shorthand for
//
//   template <typename p1_type, ..., typename pk_type>
//   FooActionPk<p1_type, ..., pk_type> Foo(p1_type p1, ..., pk_type pk) { ... }
//
// In particular, you can provide the template type arguments
// explicitly when invoking Foo(), as in Foo<long, bool>(5, false);
// although usually you can rely on the compiler to infer the types
// for you automatically.  You can assign the result of expression
// Foo(p1, ..., pk) to a variable of type FooActionPk<p1_type, ...,
// pk_type>.  This can be useful when composing actions.
//
// You can also overload actions with different numbers of parameters:
//
//   ACTION_P(Plus, a) { ... }
//   ACTION_P2(Plus, a, b) { ... }
//
// While it's tempting to always use the ACTION* macros when defining
// a new action, you should also consider implementing ActionInterface
// or using MakePolymorphicAction() instead, especially if you need to
// use the action a lot.  While these approaches require more work,
// they give you more control on the types of the mock function
// arguments and the action parameters, which in general leads to
// better compiler error messages that pay off in the long run.  They
// also allow overloading actions based on parameter types (as opposed
// to just based on the number of parameters).
//
// CAVEAT:
//
// ACTION*() can only be used in a namespace scope.  The reason is
// that C++ doesn't yet allow function-local types to be used to
// instantiate templates.  The up-coming C++0x standard will fix this.
// Once that's done, we'll consider supporting using ACTION*() inside
// a function.
//
// MORE INFORMATION:
//
// To learn more about using these macros, please search for 'ACTION' on
// https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md

$range i 0..n
$range k 0..n-1

// An internal macro needed for implementing ACTION*().
#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_\
    const args_type& args GTEST_ATTRIBUTE_UNUSED_
$for k [[, \
    arg$k[[]]_type arg$k GTEST_ATTRIBUTE_UNUSED_]]


// Sometimes you want to give an action explicit template parameters
// that cannot be inferred from its value parameters.  ACTION() and
// ACTION_P*() don't support that.  ACTION_TEMPLATE() remedies that
// and can be viewed as an extension to ACTION() and ACTION_P*().
//
// The syntax:
//
//   ACTION_TEMPLATE(ActionName,
//                   HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
//                   AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
//
// defines an action template that takes m explicit template
// parameters and n value parameters.  name_i is the name of the i-th
// template parameter, and kind_i specifies whether it's a typename,
// an integral constant, or a template.  p_i is the name of the i-th
// value parameter.
//
// Example:
//
//   // DuplicateArg<k, T>(output) converts the k-th argument of the mock
//   // function to type T and copies it to *output.
//   ACTION_TEMPLATE(DuplicateArg,
//                   HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
//                   AND_1_VALUE_PARAMS(output)) {
//     *output = T(::std::get<k>(args));
//   }
//   ...
//     int n;
//     EXPECT_CALL(mock, Foo(_, _))
//         .WillOnce(DuplicateArg<1, unsigned char>(&n));
//
// To create an instance of an action template, write:
//
//   ActionName<t1, ..., t_m>(v1, ..., v_n)
//
// where the ts are the template arguments and the vs are the value
// arguments.  The value argument types are inferred by the compiler.
// If you want to explicitly specify the value argument types, you can
// provide additional template arguments:
//
//   ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
//
// where u_i is the desired type of v_i.
//
// ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded on the
// number of value parameters, but not on the number of template
// parameters.  Without the restriction, the meaning of the following
// is unclear:
//
//   OverloadedAction<int, bool>(x);
//
// Are we using a single-template-parameter action where 'bool' refers
// to the type of x, or are we using a two-template-parameter action
// where the compiler is asked to infer the type of x?
//
// Implementation notes:
//
// GMOCK_INTERNAL_*_HAS_m_TEMPLATE_PARAMS and
// GMOCK_INTERNAL_*_AND_n_VALUE_PARAMS are internal macros for
// implementing ACTION_TEMPLATE.  The main trick we use is to create
// new macro invocations when expanding a macro.  For example, we have
//
//   #define ACTION_TEMPLATE(name, template_params, value_params)
//       ... GMOCK_INTERNAL_DECL_##template_params ...
//
// which causes ACTION_TEMPLATE(..., HAS_1_TEMPLATE_PARAMS(typename, T), ...)
// to expand to
//
//       ... GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(typename, T) ...
//
// Since GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS is a macro, the
// preprocessor will continue to expand it to
//
//       ... typename T ...
//
// This technique conforms to the C++ standard and is portable.  It
// allows us to implement action templates using O(N) code, where N is
// the maximum number of template/value parameters supported.  Without
// using it, we'd have to devote O(N^2) amount of code to implement all
// combinations of m and n.

// Declares the template parameters.

$range j 1..n
$for j [[
$range m 0..j-1
#define GMOCK_INTERNAL_DECL_HAS_$j[[]]
_TEMPLATE_PARAMS($for m, [[kind$m, name$m]]) $for m, [[kind$m name$m]]


]]

// Lists the template parameters.

$for j [[
$range m 0..j-1
#define GMOCK_INTERNAL_LIST_HAS_$j[[]]
_TEMPLATE_PARAMS($for m, [[kind$m, name$m]]) $for m, [[name$m]]


]]

// Declares the types of value parameters.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_DECL_TYPE_AND_$i[[]]
_VALUE_PARAMS($for j, [[p$j]]) $for j [[, typename p$j##_type]]


]]

// Initializes the value parameters.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_INIT_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])\
    ($for j, [[p$j##_type gmock_p$j]])$if i>0 [[ : ]]$for j, [[p$j(::std::move(gmock_p$j))]]


]]

// Declares the fields for storing the value parameters.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_DEFN_AND_$i[[]]
_VALUE_PARAMS($for j, [[p$j]]) $for j [[p$j##_type p$j; ]]


]]

// Lists the value parameters.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_LIST_AND_$i[[]]
_VALUE_PARAMS($for j, [[p$j]]) $for j, [[p$j]]


]]

// Lists the value parameter types.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_LIST_TYPE_AND_$i[[]]
_VALUE_PARAMS($for j, [[p$j]]) $for j [[, p$j##_type]]


]]

// Declares the value parameters.

$for i [[
$range j 0..i-1
#define GMOCK_INTERNAL_DECL_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]]) [[]]
$for j, [[p$j##_type p$j]]


]]

// The suffix of the class template implementing the action template.
$for i [[


$range j 0..i-1
#define GMOCK_INTERNAL_COUNT_AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]]) [[]]
$if i==1 [[P]] $elif i>=2 [[P$i]]
]]


// The name of the class template implementing the action template.
#define GMOCK_ACTION_CLASS_(name, value_params)\
    GTEST_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)

$range k 0..n-1

#define ACTION_TEMPLATE(name, template_params, value_params)\
  template <GMOCK_INTERNAL_DECL_##template_params\
            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
  class GMOCK_ACTION_CLASS_(name, value_params) {\
   public:\
    explicit GMOCK_ACTION_CLASS_(name, value_params)\
        GMOCK_INTERNAL_INIT_##value_params {}\
    template <typename F>\
    class gmock_Impl : public ::testing::ActionInterface<F> {\
     public:\
      typedef F function_type;\
      typedef typename ::testing::internal::Function<F>::Result return_type;\
      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
          args_type;\
      explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
      virtual return_type Perform(const args_type& args) {\
        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
            Perform(this, args);\
      }\
      template <$for k, [[typename arg$k[[]]_type]]>\
      return_type gmock_PerformImpl(const args_type& args[[]]
$for k [[, arg$k[[]]_type arg$k]]) const;\
      GMOCK_INTERNAL_DEFN_##value_params\
     private:\
      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
    };\
    template <typename F> operator ::testing::Action<F>() const {\
      return ::testing::Action<F>(\
          new gmock_Impl<F>(GMOCK_INTERNAL_LIST_##value_params));\
    }\
    GMOCK_INTERNAL_DEFN_##value_params\
   private:\
    GTEST_DISALLOW_ASSIGN_(GMOCK_ACTION_CLASS_(name, value_params));\
  };\
  template <GMOCK_INTERNAL_DECL_##template_params\
            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
  inline GMOCK_ACTION_CLASS_(name, value_params)<\
      GMOCK_INTERNAL_LIST_##template_params\
      GMOCK_INTERNAL_LIST_TYPE_##value_params> name(\
          GMOCK_INTERNAL_DECL_##value_params) {\
    return GMOCK_ACTION_CLASS_(name, value_params)<\
        GMOCK_INTERNAL_LIST_##template_params\
        GMOCK_INTERNAL_LIST_TYPE_##value_params>(\
            GMOCK_INTERNAL_LIST_##value_params);\
  }\
  template <GMOCK_INTERNAL_DECL_##template_params\
            GMOCK_INTERNAL_DECL_TYPE_##value_params>\
  template <typename F>\
  template <typename arg0_type, typename arg1_type, typename arg2_type, \
      typename arg3_type, typename arg4_type, typename arg5_type, \
      typename arg6_type, typename arg7_type, typename arg8_type, \
      typename arg9_type>\
  typename ::testing::internal::Function<F>::Result\
      GMOCK_ACTION_CLASS_(name, value_params)<\
          GMOCK_INTERNAL_LIST_##template_params\
          GMOCK_INTERNAL_LIST_TYPE_##value_params>::gmock_Impl<F>::\
              gmock_PerformImpl(\
          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const

$for i

[[
$var template = [[$if i==0 [[]] $else [[
$range j 0..i-1

  template <$for j, [[typename p$j##_type]]>\
]]]]
$var class_name = [[name##Action[[$if i==0 [[]] $elif i==1 [[P]]
                                                $else [[P$i]]]]]]
$range j 0..i-1
$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(::std::forward<p$j##_type>(gmock_p$j))]]]]]]
$var param_field_decls = [[$for j
[[

      p$j##_type p$j;\
]]]]
$var param_field_decls2 = [[$for j
[[

    p$j##_type p$j;\
]]]]
$var params = [[$for j, [[p$j]]]]
$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
$var typename_arg_types = [[$for k, [[typename arg$k[[]]_type]]]]
$var arg_types_and_names = [[$for k, [[arg$k[[]]_type arg$k]]]]
$var macro_name = [[$if i==0 [[ACTION]] $elif i==1 [[ACTION_P]]
                                        $else [[ACTION_P$i]]]]

#define $macro_name(name$for j [[, p$j]])\$template
  class $class_name {\
   public:\
    [[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {}\
    template <typename F>\
    class gmock_Impl : public ::testing::ActionInterface<F> {\
     public:\
      typedef F function_type;\
      typedef typename ::testing::internal::Function<F>::Result return_type;\
      typedef typename ::testing::internal::Function<F>::ArgumentTuple\
          args_type;\
      [[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\
      virtual return_type Perform(const args_type& args) {\
        return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
            Perform(this, args);\
      }\
      template <$typename_arg_types>\
      return_type gmock_PerformImpl(const args_type& args, [[]]
$arg_types_and_names) const;\$param_field_decls
     private:\
      GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
    };\
    template <typename F> operator ::testing::Action<F>() const {\
      return ::testing::Action<F>(new gmock_Impl<F>($params));\
    }\$param_field_decls2
   private:\
    GTEST_DISALLOW_ASSIGN_($class_name);\
  };\$template
  inline $class_name$param_types name($param_types_and_names) {\
    return $class_name$param_types($params);\
  }\$template
  template <typename F>\
  template <$typename_arg_types>\
  typename ::testing::internal::Function<F>::Result\
      $class_name$param_types::gmock_Impl<F>::gmock_PerformImpl(\
          GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
]]
$$ }  // This meta comment fixes auto-indentation in Emacs.  It won't
$$    // show up in the generated code.


namespace testing {


// The ACTION*() macros trigger warning C4100 (unreferenced formal
// parameter) in MSVC with -W4.  Unfortunately they cannot be fixed in
// the macro definition, as the warnings are generated when the macro
// is expanded and macro expansion cannot contain #pragma.  Therefore
// we suppress them here.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
#endif

// Various overloads for InvokeArgument<N>().
//
// The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
// (0-based) argument, which must be a k-ary callable, of the mock
// function, with arguments a1, a2, ..., a_k.
//
// Notes:
//
//   1. The arguments are passed by value by default.  If you need to
//   pass an argument by reference, wrap it inside ByRef().  For
//   example,
//
//     InvokeArgument<1>(5, string("Hello"), ByRef(foo))
//
//   passes 5 and string("Hello") by value, and passes foo by
//   reference.
//
//   2. If the callable takes an argument by reference but ByRef() is
//   not used, it will receive the reference to a copy of the value,
//   instead of the original value.  For example, when the 0-th
//   argument of the mock function takes a const string&, the action
//
//     InvokeArgument<0>(string("Hello"))
//
//   makes a copy of the temporary string("Hello") object and passes a
//   reference of the copy, instead of the original temporary object,
//   to the callable.  This makes it easy for a user to define an
//   InvokeArgument action from temporary values and have it performed
//   later.

namespace internal {
namespace invoke_argument {

// Appears in InvokeArgumentAdl's argument list to help avoid
// accidental calls to user functions of the same name.
struct AdlTag {};

// InvokeArgumentAdl - a helper for InvokeArgument.
// The basic overloads are provided here for generic functors.
// Overloads for other custom-callables are provided in the
// internal/custom/callback-actions.h header.

$range i 0..n
$for i
[[
$range j 1..i

template <typename R, typename F[[$for j [[, typename A$j]]]]>
R InvokeArgumentAdl(AdlTag, F f[[$for j [[, A$j a$j]]]]) {
  return f([[$for j, [[a$j]]]]);
}
]]

}  // namespace invoke_argument
}  // namespace internal

$range i 0..n
$for i [[
$range j 0..i-1

ACTION_TEMPLATE(InvokeArgument,
                HAS_1_TEMPLATE_PARAMS(int, k),
                AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])) {
  using internal::invoke_argument::InvokeArgumentAdl;
  return InvokeArgumentAdl<return_type>(
      internal::invoke_argument::AdlTag(),
      ::std::get<k>(args)$for j [[, p$j]]);
}

]]

// Various overloads for ReturnNew<T>().
//
// The ReturnNew<T>(a1, a2, ..., a_k) action returns a pointer to a new
// instance of type T, constructed on the heap with constructor arguments
// a1, a2, ..., and a_k. The caller assumes ownership of the returned value.
$range i 0..n
$for i [[
$range j 0..i-1
$var ps = [[$for j, [[p$j]]]]

ACTION_TEMPLATE(ReturnNew,
                HAS_1_TEMPLATE_PARAMS(typename, T),
                AND_$i[[]]_VALUE_PARAMS($ps)) {
  return new T($ps);
}

]]

#ifdef _MSC_VER
# pragma warning(pop)
#endif

}  // namespace testing

// Include any custom callback actions added by the local installation.
// We must include this header at the end to make sure it can use the
// declarations from this file.
#include "gmock/internal/custom/gmock-generated-actions.h"

#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_