Export of internal Abseil changes

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d85f04af95a6fdafb102f7dc393d78d4431b47e5 by Abseil Team <absl-team@google.com>:

Internal change for cord ring

PiperOrigin-RevId: 344541196

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1ff57908e31a09ec0c98d8316da1263092cc3a1c by Abseil Team <absl-team@google.com>:

Fix typo in comment.

PiperOrigin-RevId: 344214280
GitOrigin-RevId: d85f04af95a6fdafb102f7dc393d78d4431b47e5
Change-Id: I58b3c28f62a5d10dd665b17d58a121f371e1260a

1 files changed, 13 insertions, 1 deletions

diff --git a/absl/strings/internal/cord_internal.h b/absl/strings/internal/cord_internal.h
index 195a7988..ec2c767b 100644
--- a/absl/strings/internal/cord_internal.h
+++ b/absl/strings/internal/cord_internal.h
@@ -108,8 +108,9 @@ class Refcount {
 // functions in the base class.
 
 struct CordRepConcat;
-struct CordRepSubstring;
 struct CordRepExternal;
+struct CordRepFlat;
+struct CordRepSubstring;
 
 // Various representations that we allow
 enum CordRepKind {
@@ -180,6 +181,10 @@ struct CordRepExternal : public CordRep {
   const char* base;
   // Pointer to function that knows how to call and destroy the releaser.
   ExternalReleaserInvoker releaser_invoker;
+
+  // Deletes (releases) the external rep.
+  // Requires rep != nullptr and rep->tag == EXTERNAL
+  static void Delete(CordRep* rep);
 };
 
 struct Rank1 {};
@@ -220,6 +225,13 @@ struct CordRepExternalImpl
   }
 };
 
+inline void CordRepExternal::Delete(CordRep* rep) {
+  assert(rep != nullptr && rep->tag == EXTERNAL);
+  auto* rep_external = static_cast<CordRepExternal*>(rep);
+  assert(rep_external->releaser_invoker != nullptr);
+  rep_external->releaser_invoker(rep_external);
+}
+
 template <typename Str>
 struct ConstInitExternalStorage {
   ABSL_CONST_INIT static CordRepExternal value;