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Unified Diff: testing/gmock/include/gmock/gmock-generated-actions.h.pump

Issue 115846: Retry to checkin a version of gmock, modified to use our boost_tuple in VS2005. (Closed)
Patch Set: Created 11 years, 7 months ago
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Index: testing/gmock/include/gmock/gmock-generated-actions.h.pump
diff --git a/testing/gmock/include/gmock/gmock-generated-actions.h.pump b/testing/gmock/include/gmock/gmock-generated-actions.h.pump
new file mode 100644
index 0000000000000000000000000000000000000000..b5223a34b158495f0edb760d47ce682f4a2ad665
--- /dev/null
+++ b/testing/gmock/include/gmock/gmock-generated-actions.h.pump
@@ -0,0 +1,1008 @@
+$$ -*- mode: c++; -*-
+$$ This is a Pump source file. Please use Pump to convert it to
+$$ gmock-generated-variadic-actions.h.
+$$
+$var n = 10 $$ The maximum arity we support.
+$$}} 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.
+//
+// Author: wan@google.com (Zhanyong Wan)
+
+// Google Mock - a framework for writing C++ mock classes.
+//
+// This file implements some commonly used variadic actions.
+
+#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
+
+#include <gmock/gmock-actions.h>
+#include <gmock/internal/gmock-port.h>
+
+namespace testing {
+namespace internal {
+
+// InvokeHelper<F> knows how to unpack an N-tuple and invoke an N-ary
+// function or method with the unpacked values, where F is a function
+// type that takes N arguments.
+template <typename Result, typename ArgumentTuple>
+class InvokeHelper;
+
+
+$range i 0..n
+$for i [[
+$range j 1..i
+$var types = [[$for j [[, typename A$j]]]]
+$var as = [[$for j, [[A$j]]]]
+$var args = [[$if i==0 [[]] $else [[ args]]]]
+$var import = [[$if i==0 [[]] $else [[
+ using ::std::tr1::get;
+
+]]]]
+$var gets = [[$for j, [[get<$(j - 1)>(args)]]]]
+template <typename R$types>
+class InvokeHelper<R, ::std::tr1::tuple<$as> > {
+ public:
+ template <typename Function>
+ static R Invoke(Function function, const ::std::tr1::tuple<$as>&$args) {
+$import return function($gets);
+ }
+
+ template <class Class, typename MethodPtr>
+ static R InvokeMethod(Class* obj_ptr,
+ MethodPtr method_ptr,
+ const ::std::tr1::tuple<$as>&$args) {
+$import return (obj_ptr->*method_ptr)($gets);
+ }
+};
+
+
+]]
+
+// Implements the Invoke(f) action. The template argument
+// FunctionImpl is the implementation type of f, which can be either a
+// function pointer or a functor. Invoke(f) can be used as an
+// Action<F> as long as f's type is compatible with F (i.e. f can be
+// assigned to a tr1::function<F>).
+template <typename FunctionImpl>
+class InvokeAction {
+ public:
+ // The c'tor makes a copy of function_impl (either a function
+ // pointer or a functor).
+ explicit InvokeAction(FunctionImpl function_impl)
+ : function_impl_(function_impl) {}
+
+ template <typename Result, typename ArgumentTuple>
+ Result Perform(const ArgumentTuple& args) {
+ return InvokeHelper<Result, ArgumentTuple>::Invoke(function_impl_, args);
+ }
+ private:
+ FunctionImpl function_impl_;
+};
+
+// Implements the Invoke(object_ptr, &Class::Method) action.
+template <class Class, typename MethodPtr>
+class InvokeMethodAction {
+ public:
+ InvokeMethodAction(Class* obj_ptr, MethodPtr method_ptr)
+ : obj_ptr_(obj_ptr), method_ptr_(method_ptr) {}
+
+ template <typename Result, typename ArgumentTuple>
+ Result Perform(const ArgumentTuple& args) const {
+ return InvokeHelper<Result, ArgumentTuple>::InvokeMethod(
+ obj_ptr_, method_ptr_, args);
+ }
+ private:
+ Class* const obj_ptr_;
+ const MethodPtr method_ptr_;
+};
+
+// A ReferenceWrapper<T> object represents a reference to type T,
+// which can be either const or not. It can be explicitly converted
+// from, and implicitly converted to, a T&. Unlike a reference,
+// ReferenceWrapper<T> can be copied and can survive template type
+// inference. This is used to support by-reference arguments in the
+// InvokeArgument<N>(...) action. The idea was from "reference
+// wrappers" in tr1, which we don't have in our source tree yet.
+template <typename T>
+class ReferenceWrapper {
+ public:
+ // Constructs a ReferenceWrapper<T> object from a T&.
+ explicit ReferenceWrapper(T& l_value) : pointer_(&l_value) {} // NOLINT
+
+ // Allows a ReferenceWrapper<T> object to be implicitly converted to
+ // a T&.
+ operator T&() const { return *pointer_; }
+ private:
+ T* pointer_;
+};
+
+// CallableHelper has static methods for invoking "callables",
+// i.e. function pointers and functors. It uses overloading to
+// provide a uniform interface for invoking different kinds of
+// callables. In particular, you can use:
+//
+// CallableHelper<R>::Call(callable, a1, a2, ..., an)
+//
+// to invoke an n-ary callable, where R is its return type. If an
+// argument, say a2, needs to be passed by reference, you should write
+// ByRef(a2) instead of a2 in the above expression.
+template <typename R>
+class CallableHelper {
+ public:
+ // Calls a nullary callable.
+ template <typename Function>
+ static R Call(Function function) { return function(); }
+
+ // Calls a unary callable.
+
+ // We deliberately pass a1 by value instead of const reference here
+ // in case it is a C-string literal. If we had declared the
+ // parameter as 'const A1& a1' and write Call(function, "Hi"), the
+ // compiler would've thought A1 is 'char[3]', which causes trouble
+ // when you need to copy a value of type A1. By declaring the
+ // parameter as 'A1 a1', the compiler will correctly infer that A1
+ // is 'const char*' when it sees Call(function, "Hi").
+ //
+ // Since this function is defined inline, the compiler can get rid
+ // of the copying of the arguments. Therefore the performance won't
+ // be hurt.
+ template <typename Function, typename A1>
+ static R Call(Function function, A1 a1) { return function(a1); }
+
+$range i 2..n
+$for i
+[[
+$var arity = [[$if i==2 [[binary]] $elif i==3 [[ternary]] $else [[$i-ary]]]]
+
+ // Calls a $arity callable.
+
+$range j 1..i
+$var typename_As = [[$for j, [[typename A$j]]]]
+$var Aas = [[$for j, [[A$j a$j]]]]
+$var as = [[$for j, [[a$j]]]]
+$var typename_Ts = [[$for j, [[typename T$j]]]]
+$var Ts = [[$for j, [[T$j]]]]
+ template <typename Function, $typename_As>
+ static R Call(Function function, $Aas) {
+ return function($as);
+ }
+
+]]
+
+}; // class CallableHelper
+
+// An INTERNAL macro for extracting the type of a tuple field. It's
+// subject to change without notice - DO NOT USE IN USER CODE!
+#define GMOCK_FIELD_(Tuple, N) \
+ typename ::std::tr1::tuple_element<N, Tuple>::type
+
+$range i 1..n
+
+// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::type is the
+// type of an n-ary function whose i-th (1-based) argument type is the
+// k{i}-th (0-based) field of ArgumentTuple, which must be a tuple
+// type, and whose return type is Result. For example,
+// SelectArgs<int, ::std::tr1::tuple<bool, char, double, long>, 0, 3>::type
+// is int(bool, long).
+//
+// SelectArgs<Result, ArgumentTuple, k1, k2, ..., k_n>::Select(args)
+// returns the selected fields (k1, k2, ..., k_n) of args as a tuple.
+// For example,
+// SelectArgs<int, ::std::tr1::tuple<bool, char, double>, 2, 0>::Select(
+// ::std::tr1::make_tuple(true, 'a', 2.5))
+// returns ::std::tr1::tuple (2.5, true).
+//
+// The numbers in list k1, k2, ..., k_n must be >= 0, where n can be
+// in the range [0, $n]. Duplicates are allowed and they don't have
+// to be in an ascending or descending order.
+
+template <typename Result, typename ArgumentTuple, $for i, [[int k$i]]>
+class SelectArgs {
+ public:
+ typedef Result type($for i, [[GMOCK_FIELD_(ArgumentTuple, k$i)]]);
+ typedef typename Function<type>::ArgumentTuple SelectedArgs;
+ static SelectedArgs Select(const ArgumentTuple& args) {
+ using ::std::tr1::get;
+ return SelectedArgs($for i, [[get<k$i>(args)]]);
+ }
+};
+
+
+$for i [[
+$range j 1..n
+$range j1 1..i-1
+template <typename Result, typename ArgumentTuple$for j1[[, int k$j1]]>
+class SelectArgs<Result, ArgumentTuple,
+ $for j, [[$if j <= i-1 [[k$j]] $else [[-1]]]]> {
+ public:
+ typedef Result type($for j1, [[GMOCK_FIELD_(ArgumentTuple, k$j1)]]);
+ typedef typename Function<type>::ArgumentTuple SelectedArgs;
+ static SelectedArgs Select(const ArgumentTuple& [[]]
+$if i == 1 [[/* args */]] $else [[args]]) {
+ using ::std::tr1::get;
+ return SelectedArgs($for j1, [[get<k$j1>(args)]]);
+ }
+};
+
+
+]]
+#undef GMOCK_FIELD_
+
+$var ks = [[$for i, [[k$i]]]]
+
+// Implements the WithArgs action.
+template <typename InnerAction, $for i, [[int k$i = -1]]>
+class WithArgsAction {
+ public:
+ explicit WithArgsAction(const InnerAction& action) : action_(action) {}
+
+ template <typename F>
+ operator Action<F>() const { return MakeAction(new Impl<F>(action_)); }
+
+ private:
+ template <typename F>
+ class Impl : public ActionInterface<F> {
+ public:
+ typedef typename Function<F>::Result Result;
+ typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+
+ explicit Impl(const InnerAction& action) : action_(action) {}
+
+ virtual Result Perform(const ArgumentTuple& args) {
+ return action_.Perform(SelectArgs<Result, ArgumentTuple, $ks>::Select(args));
+ }
+
+ private:
+ typedef typename SelectArgs<Result, ArgumentTuple,
+ $ks>::type InnerFunctionType;
+
+ Action<InnerFunctionType> action_;
+ };
+
+ const InnerAction action_;
+};
+
+// Does two actions sequentially. Used for implementing the DoAll(a1,
+// a2, ...) action.
+template <typename Action1, typename Action2>
+class DoBothAction {
+ public:
+ DoBothAction(Action1 action1, Action2 action2)
+ : action1_(action1), action2_(action2) {}
+
+ // This template type conversion operator allows DoAll(a1, ..., a_n)
+ // to be used in ANY function of compatible type.
+ template <typename F>
+ operator Action<F>() const {
+ return Action<F>(new Impl<F>(action1_, action2_));
+ }
+
+ private:
+ // Implements the DoAll(...) action for a particular function type F.
+ template <typename F>
+ class Impl : public ActionInterface<F> {
+ public:
+ typedef typename Function<F>::Result Result;
+ typedef typename Function<F>::ArgumentTuple ArgumentTuple;
+ typedef typename Function<F>::MakeResultVoid VoidResult;
+
+ Impl(const Action<VoidResult>& action1, const Action<F>& action2)
+ : action1_(action1), action2_(action2) {}
+
+ virtual Result Perform(const ArgumentTuple& args) {
+ action1_.Perform(args);
+ return action2_.Perform(args);
+ }
+
+ private:
+ const Action<VoidResult> action1_;
+ const Action<F> action2_;
+ };
+
+ Action1 action1_;
+ Action2 action2_;
+};
+
+// 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, [[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::tr1::tuple<$As>& args) {
+ using ::std::tr1::get;
+ return impl->template gmock_PerformImpl<$As>(args, $arg_list);
+ }
+
+]]
+};
+
+} // namespace internal
+
+// Various overloads for Invoke().
+
+// Creates an action that invokes 'function_impl' with the mock
+// function's arguments.
+template <typename FunctionImpl>
+PolymorphicAction<internal::InvokeAction<FunctionImpl> > Invoke(
+ FunctionImpl function_impl) {
+ return MakePolymorphicAction(
+ internal::InvokeAction<FunctionImpl>(function_impl));
+}
+
+// Creates an action that invokes the given method on the given object
+// with the mock function's arguments.
+template <class Class, typename MethodPtr>
+PolymorphicAction<internal::InvokeMethodAction<Class, MethodPtr> > Invoke(
+ Class* obj_ptr, MethodPtr method_ptr) {
+ return MakePolymorphicAction(
+ internal::InvokeMethodAction<Class, MethodPtr>(obj_ptr, method_ptr));
+}
+
+// Creates a reference wrapper for the given L-value. If necessary,
+// you can explicitly specify the type of the reference. For example,
+// suppose 'derived' is an object of type Derived, ByRef(derived)
+// would wrap a Derived&. If you want to wrap a const Base& instead,
+// where Base is a base class of Derived, just write:
+//
+// ByRef<const Base>(derived)
+template <typename T>
+inline internal::ReferenceWrapper<T> ByRef(T& l_value) { // NOLINT
+ return internal::ReferenceWrapper<T>(l_value);
+}
+
+// WithoutArgs(inner_action) can be used in a mock function with a
+// non-empty argument list to perform inner_action, which takes no
+// argument. In other words, it adapts an action accepting no
+// argument to one that accepts (and ignores) arguments.
+template <typename InnerAction>
+inline internal::WithArgsAction<InnerAction>
+WithoutArgs(const InnerAction& action) {
+ return internal::WithArgsAction<InnerAction>(action);
+}
+
+// WithArg<k>(an_action) creates an action that passes the k-th
+// (0-based) argument of the mock function to an_action and performs
+// it. It adapts an action accepting one argument to one that accepts
+// multiple arguments. For convenience, we also provide
+// WithArgs<k>(an_action) (defined below) as a synonym.
+template <int k, typename InnerAction>
+inline internal::WithArgsAction<InnerAction, k>
+WithArg(const InnerAction& action) {
+ return internal::WithArgsAction<InnerAction, k>(action);
+}
+
+// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
+// the selected arguments of the mock function to an_action and
+// performs it. It serves as an adaptor between actions with
+// different argument lists. C++ doesn't support default arguments for
+// function templates, so we have to overload it.
+
+$range i 1..n
+$for i [[
+$range j 1..i
+template <$for j [[int k$j, ]]typename InnerAction>
+inline internal::WithArgsAction<InnerAction$for j [[, k$j]]>
+WithArgs(const InnerAction& action) {
+ return internal::WithArgsAction<InnerAction$for j [[, k$j]]>(action);
+}
+
+
+]]
+// Creates an action that does actions a1, a2, ..., sequentially in
+// each invocation.
+$range i 2..n
+$for i [[
+$range j 2..i
+$var types = [[$for j, [[typename Action$j]]]]
+$var Aas = [[$for j [[, Action$j a$j]]]]
+
+template <typename Action1, $types>
+$range k 1..i-1
+
+inline $for k [[internal::DoBothAction<Action$k, ]]Action$i$for k [[>]]
+
+DoAll(Action1 a1$Aas) {
+$if i==2 [[
+
+ return internal::DoBothAction<Action1, Action2>(a1, a2);
+]] $else [[
+$range j2 2..i
+
+ return DoAll(a1, DoAll($for j2, [[a$j2]]));
+]]
+
+}
+
+]]
+
+} // 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$n to support
+// multi-parameter actions.
+//
+// For the purpose of typing, you can view
+//
+// ACTION_Pk(Foo, p1, ..., pk) { ... }
+//
+// as shorthand for
+//
+// template <typename p1_type, ..., typename pk_type>
+// FooActionPk<p1_type, ..., pk_type> Foo(p1_type p1, ..., pk_type pk) { ... }
+//
+// In particular, you can provide the template type arguments
+// explicitly when invoking Foo(), as in Foo<long, bool>(5, false);
+// although usually you can rely on the compiler to infer the types
+// for you automatically. You can assign the result of expression
+// Foo(p1, ..., pk) to a variable of type FooActionPk<p1_type, ...,
+// pk_type>. This can be useful when composing actions.
+//
+// You can also overload actions with different numbers of parameters:
+//
+// ACTION_P(Plus, a) { ... }
+// ACTION_P2(Plus, a, b) { ... }
+//
+// While it's tempting to always use the ACTION* macros when defining
+// a new action, you should also consider implementing ActionInterface
+// or using MakePolymorphicAction() instead, especially if you need to
+// use the action a lot. While these approaches require more work,
+// they give you more control on the types of the mock function
+// arguments and the action parameters, which in general leads to
+// better compiler error messages that pay off in the long run. They
+// also allow overloading actions based on parameter types (as opposed
+// to just based on the number of parameters).
+//
+// CAVEAT:
+//
+// ACTION*() can only be used in a namespace scope. The reason is
+// that C++ doesn't yet allow function-local types to be used to
+// instantiate templates. The up-coming C++0x standard will fix this.
+// Once that's done, we'll consider supporting using ACTION*() inside
+// a function.
+//
+// MORE INFORMATION:
+//
+// To learn more about using these macros, please search for 'ACTION'
+// on http://code.google.com/p/googlemock/wiki/CookBook.
+
+$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::tr1::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$j(gmock_p$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)\
+ GMOCK_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)
+
+$range k 0..n-1
+
+#define ACTION_TEMPLATE(name, template_params, value_params)\
+ template <GMOCK_INTERNAL_DECL_##template_params\
+ GMOCK_INTERNAL_DECL_TYPE_##value_params>\
+ class GMOCK_ACTION_CLASS_(name, value_params) {\
+ public:\
+ GMOCK_ACTION_CLASS_(name, value_params)\
+ GMOCK_INTERNAL_INIT_##value_params {}\
+ template <typename F>\
+ class gmock_Impl : public ::testing::ActionInterface<F> {\
+ public:\
+ typedef F function_type;\
+ typedef typename ::testing::internal::Function<F>::Result return_type;\
+ typedef typename ::testing::internal::Function<F>::ArgumentTuple\
+ args_type;\
+ explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {}\
+ virtual return_type Perform(const args_type& args) {\
+ return ::testing::internal::ActionHelper<return_type, gmock_Impl>::\
+ Perform(this, args);\
+ }\
+ template <$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\
+ };\
+ 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\
+ };\
+ 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(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:\
+ $class_name($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
+ };\
+ template <typename F> operator ::testing::Action<F>() const {\
+ return ::testing::Action<F>(new gmock_Impl<F>($params));\
+ }\$param_field_decls2
+ };\$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.
+
+
+// TODO(wan@google.com): move the following to a different .h file
+// such that we don't have to run 'pump' every time the code is
+// updated.
+namespace testing {
+
+// 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.
+
+$range i 0..n
+$for i [[
+$range j 0..i-1
+
+ACTION_TEMPLATE(InvokeArgument,
+ HAS_1_TEMPLATE_PARAMS(int, k),
+ AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])) {
+ return internal::CallableHelper<return_type>::Call(
+ ::std::tr1::get<k>(args)$for j [[, p$j]]);
+}
+
+]]
+
+// Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
+// mock function to *pointer.
+ACTION_TEMPLATE(SaveArg,
+ HAS_1_TEMPLATE_PARAMS(int, k),
+ AND_1_VALUE_PARAMS(pointer)) {
+ *pointer = ::std::tr1::get<k>(args);
+}
+
+// Action SetArgReferee<k>(value) assigns 'value' to the variable
+// referenced by the k-th (0-based) argument of the mock function.
+ACTION_TEMPLATE(SetArgReferee,
+ HAS_1_TEMPLATE_PARAMS(int, k),
+ AND_1_VALUE_PARAMS(value)) {
+ typedef typename ::std::tr1::tuple_element<k, args_type>::type argk_type;
+ // Ensures that argument #k is a reference. If you get a compiler
+ // error on the next line, you are using SetArgReferee<k>(value) in
+ // a mock function whose k-th (0-based) argument is not a reference.
+ GMOCK_COMPILE_ASSERT_(internal::is_reference<argk_type>::value,
+ SetArgReferee_must_be_used_with_a_reference_argument);
+ ::std::tr1::get<k>(args) = value;
+}
+
+// Action SetArrayArgument<k>(first, last) copies the elements in
+// source range [first, last) to the array pointed to by the k-th
+// (0-based) argument, which can be either a pointer or an
+// iterator. The action does not take ownership of the elements in the
+// source range.
+ACTION_TEMPLATE(SetArrayArgument,
+ HAS_1_TEMPLATE_PARAMS(int, k),
+ AND_2_VALUE_PARAMS(first, last)) {
+ // Microsoft compiler deprecates ::std::copy, so we want to suppress warning
+ // 4996 (Function call with parameters that may be unsafe) there.
+#ifdef _MSC_VER
+#pragma warning(push) // Saves the current warning state.
+#pragma warning(disable:4996) // Temporarily disables warning 4996.
+#endif
+ ::std::copy(first, last, ::std::tr1::get<k>(args));
+#ifdef _MSC_VER
+#pragma warning(pop) // Restores the warning state.
+#endif
+}
+
+// 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);
+}
+
+]]
+
+// Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
+// function.
+ACTION_TEMPLATE(DeleteArg,
+ HAS_1_TEMPLATE_PARAMS(int, k),
+ AND_0_VALUE_PARAMS()) {
+ delete ::std::tr1::get<k>(args);
+}
+
+// Action Throw(exception) can be used in a mock function of any type
+// to throw the given exception. Any copyable value can be thrown.
+#if GTEST_HAS_EXCEPTIONS
+ACTION_P(Throw, exception) { throw exception; }
+#endif // GTEST_HAS_EXCEPTIONS
+
+} // namespace testing
+
+#endif // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
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