Make data members of CommonFields be private so that it's easier to change how…

Make data members of CommonFields be private so that it's easier to change how we store this information internally.

PiperOrigin-RevId: 544667586
Change-Id: I9b1943ca71ea1c1f8699832422cd7bc095ac8b2d

absl/container/internal/raw_hash_set.cc

@@ -15,6 +15,7 @@
 #include "absl/container/internal/raw_hash_set.h"
 
 #include <atomic>
+#include <cassert>
 #include <cstddef>
 #include <cstring>
 
@@ -130,8 +131,8 @@ static inline void* PrevSlot(void* slot, size_t slot_size) {
 void DropDeletesWithoutResize(CommonFields& common,
                               const PolicyFunctions& policy, void* tmp_space) {
   void* set = &common;
-  void* slot_array = common.slots_;
-  const size_t capacity = common.capacity_;
+  void* slot_array = common.slots();
+  const size_t capacity = common.capacity();
   assert(IsValidCapacity(capacity));
   assert(!is_small(capacity));
   // Algorithm:
@@ -150,7 +151,7 @@ void DropDeletesWithoutResize(CommonFields& common,
   //       swap current element with target element
   //       mark target as FULL
   //       repeat procedure for current slot with moved from element (target)
-  ctrl_t* ctrl = common.control_;
+  ctrl_t* ctrl = common.control();
   ConvertDeletedToEmptyAndFullToDeleted(ctrl, capacity);
   auto hasher = policy.hash_slot;
   auto transfer = policy.transfer;
@@ -210,11 +211,11 @@ void DropDeletesWithoutResize(CommonFields& common,
 
 void EraseMetaOnly(CommonFields& c, ctrl_t* it, size_t slot_size) {
   assert(IsFull(*it) && "erasing a dangling iterator");
-  --c.size_;
-  const auto index = static_cast<size_t>(it - c.control_);
-  const size_t index_before = (index - Group::kWidth) & c.capacity_;
+  c.set_size(c.size() - 1);
+  const auto index = static_cast<size_t>(it - c.control());
+  const size_t index_before = (index - Group::kWidth) & c.capacity();
   const auto empty_after = Group(it).MaskEmpty();
-  const auto empty_before = Group(c.control_ + index_before).MaskEmpty();
+  const auto empty_before = Group(c.control() + index_before).MaskEmpty();
 
   // We count how many consecutive non empties we have to the right and to the
   // left of `it`. If the sum is >= kWidth then there is at least one probe
@@ -226,26 +227,26 @@ void EraseMetaOnly(CommonFields& c, ctrl_t* it, size_t slot_size) {
 
   SetCtrl(c, index, was_never_full ? ctrl_t::kEmpty : ctrl_t::kDeleted,
           slot_size);
-  c.growth_left() += (was_never_full ? 1 : 0);
+  c.set_growth_left(c.growth_left() + (was_never_full ? 1 : 0));
   c.infoz().RecordErase();
 }
 
 void ClearBackingArray(CommonFields& c, const PolicyFunctions& policy,
                        bool reuse) {
-  c.size_ = 0;
+  c.set_size(0);
   if (reuse) {
     ResetCtrl(c, policy.slot_size);
-    c.infoz().RecordStorageChanged(0, c.capacity_);
+    c.infoz().RecordStorageChanged(0, c.capacity());
   } else {
     void* set = &c;
-    (*policy.dealloc)(set, policy, c.control_, c.slots_, c.capacity_);
-    c.control_ = EmptyGroup();
+    (*policy.dealloc)(set, policy, c.control(), c.slots(), c.capacity());
+    c.set_control(EmptyGroup());
     c.set_generation_ptr(EmptyGeneration());
-    c.slots_ = nullptr;
-    c.capacity_ = 0;
-    c.growth_left() = 0;
+    c.set_slots(nullptr);
+    c.set_capacity(0);
+    c.set_growth_left(0);
     c.infoz().RecordClearedReservation();
-    assert(c.size_ == 0);
+    assert(c.size() == 0);
     c.infoz().RecordStorageChanged(0, 0);
   }
 }