Export of internal Abseil changes

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e21e960918678629abf89ad1b694b7d4a456b434 by Greg Falcon <gfalcon@google.com>:

Roll back invoke() change due to large increases in compiler memory usage.

PiperOrigin-RevId: 315919455

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f95872e1e1d7afdefbac94f42ea228d42d80eb6e by Greg Falcon <gfalcon@google.com>:

Rollback of invoke() changes due to compiler memory usage growth

PiperOrigin-RevId: 315911585

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6c6c6ba6892016a2ce4703042800254fb9b15727 by Laramie Leavitt <lar@google.com>:

Move some of the common mocking code into MockHelpers.

Use MockHelpers to do mock signature detection and improve the dispatch mechansim.

PiperOrigin-RevId: 315825988

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5e9380367d280c7fa6dbd4d0f48c31ade7f1d419 by Greg Falcon <gfalcon@google.com>:

Rename the internal implementation details Invoke and InvokeT to `invoke` and `invoke_result_t`, since these are re-implementations of C++17 library entites of the same names.

PiperOrigin-RevId: 315790467
GitOrigin-RevId: e21e960918678629abf89ad1b694b7d4a456b434
Change-Id: Ia75011f94cb033c1c9a4cb64cf14d283b91426ac

1 files changed, 10 insertions, 8 deletions

diff --git a/absl/random/internal/distribution_caller.h b/absl/random/internal/distribution_caller.h
index 87a76845..fc81b787 100644
--- a/absl/random/internal/distribution_caller.h
+++ b/absl/random/internal/distribution_caller.h
@@ -52,23 +52,25 @@ struct DistributionCaller {
 
   // Default implementation of distribution caller.
   template <typename DistrT, typename... Args>
-  static inline typename DistrT::result_type Impl(std::false_type, URBG* urbg,
-                                                  Args&&... args) {
+  static typename DistrT::result_type Impl(std::false_type, URBG* urbg,
+                                           Args&&... args) {
     DistrT dist(std::forward<Args>(args)...);
     return dist(*urbg);
   }
 
   // Mock implementation of distribution caller.
+  // The underlying KeyT must match the KeyT constructed by MockOverloadSet.
   template <typename DistrT, typename... Args>
-  static inline typename DistrT::result_type Impl(std::true_type, URBG* urbg,
-                                                  Args&&... args) {
+  static typename DistrT::result_type Impl(std::true_type, URBG* urbg,
+                                           Args&&... args) {
     using ResultT = typename DistrT::result_type;
     using ArgTupleT = std::tuple<absl::decay_t<Args>...>;
+    using KeyT = ResultT(DistrT, ArgTupleT);
+
     ArgTupleT arg_tuple(std::forward<Args>(args)...);
     ResultT result;
-    if (!urbg->InvokeMock(
-            ::absl::base_internal::FastTypeId<ResultT(DistrT, ArgTupleT)>(),
-            &arg_tuple, &result)) {
+    if (!urbg->InvokeMock(::absl::base_internal::FastTypeId<KeyT>(), &arg_tuple,
+                          &result)) {
       auto dist = absl::make_from_tuple<DistrT>(arg_tuple);
       result = dist(*urbg);
     }
@@ -77,7 +79,7 @@ struct DistributionCaller {
 
   // Default implementation of distribution caller.
   template <typename DistrT, typename... Args>
-  static inline typename DistrT::result_type Call(URBG* urbg, Args&&... args) {
+  static typename DistrT::result_type Call(URBG* urbg, Args&&... args) {
     return Impl<DistrT, Args...>(HasInvokeMock{}, urbg,
                                  std::forward<Args>(args)...);
   }