$$ -*- mode: c++; -*- $$ 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 #include #include "gmock/gmock-actions.h" #include "gmock/internal/gmock-port.h" // 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 // FooActionPk Foo(p1_type p1, ..., pk_type pk) { ... } // // In particular, you can provide the template type arguments // explicitly when invoking Foo(), as in Foo(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. 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 as templates cannot be // declared inside of a local class. // Users can, however, define any local functors (e.g. a lambda) that // can be used as actions. // // MORE INFORMATION: // // To learn more about using these macros, please search for 'ACTION' on // https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md $range i 0..n $range k 0..n-1 // 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(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(args)); // } // ... // int n; // EXPECT_CALL(mock, Foo(_, _)) // .WillOnce(DuplicateArg<1, unsigned char>(&n)); // // To create an instance of an action template, write: // // ActionName(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(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(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 \ class GMOCK_ACTION_CLASS_(name, value_params) {\ public:\ explicit GMOCK_ACTION_CLASS_(name, value_params)\ GMOCK_INTERNAL_INIT_##value_params {}\ template \ class gmock_Impl : public ::testing::ActionInterface {\ public:\ typedef F function_type;\ typedef typename ::testing::internal::Function::Result return_type;\ typedef typename ::testing::internal::Function::ArgumentTuple\ args_type;\ explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\ return_type Perform(const args_type& args) override {\ return ::testing::internal::ActionHelper::\ Perform(this, args);\ }\ template \ return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const;\ GMOCK_INTERNAL_DEFN_##value_params\ private:\ GTEST_DISALLOW_ASSIGN_(gmock_Impl);\ };\ template operator ::testing::Action() const {\ return ::testing::Action(\ new gmock_Impl(GMOCK_INTERNAL_LIST_##value_params));\ }\ GMOCK_INTERNAL_DEFN_##value_params\ private:\ GTEST_DISALLOW_ASSIGN_(GMOCK_ACTION_CLASS_(name, value_params));\ };\ template \ 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 \ template \ template \ typename ::testing::internal::Function::Result\ GMOCK_ACTION_CLASS_(name, value_params)<\ GMOCK_INTERNAL_LIST_##template_params\ GMOCK_INTERNAL_LIST_TYPE_##value_params>::gmock_Impl::\ 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(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, [[const 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 $class_name : public ::testing::internal::ActionImpl<$class_name$param_types> {\ using base_type = ::testing::internal::ActionImpl<$class_name>;\ public:\ using base_type::base_type;\ template \ class gmock_Impl : public ::testing::ActionInterface {\ public:\ typedef F function_type;\ typedef typename ::testing::internal::Function::Result return_type;\ typedef typename ::testing::internal::Function::ArgumentTuple\ args_type;\ [[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\ return_type Perform(const args_type& args) override {\ return ::testing::internal::ActionHelper::\ Perform(this, args);\ }\ template \ return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const;\$param_field_decls private:\ GTEST_DISALLOW_ASSIGN_(gmock_Impl);\ };\ private:\ GTEST_DISALLOW_ASSIGN_($class_name);\ };\$template inline $class_name$param_types name($param_types_and_names) {\ return $class_name$param_types($params);\ }\$template template \ template \ typename ::testing::internal::Function::Result\ $class_name$param_types::gmock_Impl::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(). // // The InvokeArgument(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. $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(internal::invoke_argument::AdlTag(), ::std::get(args)$for j[[, p$j]]); } ]] // Various overloads for ReturnNew(). // // The ReturnNew(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_