From 4b9c1691c4b7f01fbd9d37d86c88cdad298d48e9 Mon Sep 17 00:00:00 2001
From: Abseil Team <absl-team@google.com>
Date: Tue, 7 Jan 2020 03:51:16 -0500
Subject: Googletest export

Use C++11 variadic templates for Invoke in gmock-generated-actions.h.

Replace InvokeArgumentAdl with Invoke that uses C++11 variadic templates.

PiperOrigin-RevId: 288449236
---
 googlemock/include/gmock/gmock-actions.h           |  16 +++
 googlemock/include/gmock/gmock-generated-actions.h | 129 ++++-----------------
 .../include/gmock/gmock-generated-actions.h.pump   |  31 +----
 3 files changed, 42 insertions(+), 134 deletions(-)

diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index 4b8dceb..11223cf 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -1222,6 +1222,22 @@ class ActionHelper {
   }
 };
 
+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/gmock-generated-actions.h header.
+template <typename F, typename... Args>
+auto InvokeArgumentAdl(AdlTag, F f, Args... args) -> decltype(f(args...)) {
+  return f(args...);
+}
+
+}  // namespace invoke_argument
 }  // namespace internal
 
 }  // namespace testing
diff --git a/googlemock/include/gmock/gmock-generated-actions.h b/googlemock/include/gmock/gmock-generated-actions.h
index 20b78cd..8257fb1 100644
--- a/googlemock/include/gmock/gmock-generated-actions.h
+++ b/googlemock/include/gmock/gmock-generated-actions.h
@@ -1501,175 +1501,94 @@ namespace testing {
 //   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/gmock-generated-actions.h header.
-
-template <typename R, typename F>
-R InvokeArgumentAdl(AdlTag, F f) {
-  return f();
-}
-template <typename R, typename F, typename A1>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1) {
-  return f(a1);
-}
-template <typename R, typename F, typename A1, typename A2>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2) {
-  return f(a1, a2);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3) {
-  return f(a1, a2, a3);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4) {
-  return f(a1, a2, a3, a4);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) {
-  return f(a1, a2, a3, a4, a5);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) {
-  return f(a1, a2, a3, a4, a5, a6);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
-    A7 a7) {
-  return f(a1, a2, a3, a4, a5, a6, a7);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7, typename A8>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
-    A7 a7, A8 a8) {
-  return f(a1, a2, a3, a4, a5, a6, a7, a8);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7, typename A8,
-    typename A9>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
-    A7 a7, A8 a8, A9 a9) {
-  return f(a1, a2, a3, a4, a5, a6, a7, a8, a9);
-}
-template <typename R, typename F, typename A1, typename A2, typename A3,
-    typename A4, typename A5, typename A6, typename A7, typename A8,
-    typename A9, typename A10>
-R InvokeArgumentAdl(AdlTag, F f, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
-    A7 a7, A8 a8, A9 a9, A10 a10) {
-  return f(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
-}
-}  // namespace invoke_argument
-}  // namespace internal
-
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_0_VALUE_PARAMS()) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args));
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args));
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_1_VALUE_PARAMS(p0)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_2_VALUE_PARAMS(p0, p1)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_3_VALUE_PARAMS(p0, p1, p2)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_4_VALUE_PARAMS(p0, p1, p2, p3)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4, p5);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4, p5);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7,
+                               p8);
 }
 
 ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9)) {
   using internal::invoke_argument::InvokeArgumentAdl;
-  return InvokeArgumentAdl<return_type>(
-      internal::invoke_argument::AdlTag(),
-      ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7, p8, p9);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args), p0, p1, p2, p3, p4, p5, p6, p7,
+                               p8, p9);
 }
 
 // Various overloads for ReturnNew<T>().
diff --git a/googlemock/include/gmock/gmock-generated-actions.h.pump b/googlemock/include/gmock/gmock-generated-actions.h.pump
index 1121fbd..bd3eadb 100644
--- a/googlemock/include/gmock/gmock-generated-actions.h.pump
+++ b/googlemock/include/gmock/gmock-generated-actions.h.pump
@@ -506,32 +506,6 @@ namespace testing {
 //   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/gmock-generated-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 [[
 $range j 0..i-1
@@ -540,9 +514,8 @@ ACTION_TEMPLATE(InvokeArgument,
                 HAS_1_TEMPLATE_PARAMS(int, k),
                 AND_$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]]);
+  return InvokeArgumentAdl(internal::invoke_argument::AdlTag(),
+                           ::std::get<k>(args)$for j[[, p$j]]);
 }
 
 ]]
-- 
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