diff options
Diffstat (limited to 'absl/strings/internal/cord_internal.h')
| -rw-r--r-- | absl/strings/internal/cord_internal.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/absl/strings/internal/cord_internal.h b/absl/strings/internal/cord_internal.h index 1e2436ba..bddc9815 100644 --- a/absl/strings/internal/cord_internal.h +++ b/absl/strings/internal/cord_internal.h @@ -150,22 +150,24 @@ struct CordRepExternal; struct CordRepFlat; struct CordRepSubstring; class CordRepRing; +class CordRepBtree; // Various representations that we allow enum CordRepKind { CONCAT = 0, SUBSTRING = 1, - RING = 2, - EXTERNAL = 3, + BTREE = 2, + RING = 3, + EXTERNAL = 4, // We have different tags for different sized flat arrays, - // starting with FLAT, and limited to MAX_FLAT_TAG. The 224 value is based on + // starting with FLAT, and limited to MAX_FLAT_TAG. The 225 value is based on // the current 'size to tag' encoding of 8 / 32 bytes. If a new tag is needed // in the future, then 'FLAT' and 'MAX_FLAT_TAG' should be adjusted as well // as the Tag <---> Size logic so that FLAT stil represents the minimum flat // allocation size. (32 bytes as of now). - FLAT = 4, - MAX_FLAT_TAG = 224 + FLAT = 5, + MAX_FLAT_TAG = 225 }; // There are various locations where we want to check if some rep is a 'plain' @@ -175,8 +177,9 @@ enum CordRepKind { // so likewise align RING to EXTERNAL. // Note that we can leave this optimization to the compiler. The compiler will // DTRT when it sees a condition like `tag == EXTERNAL || tag >= FLAT`. -static_assert(EXTERNAL == RING + 1, "RING and EXTERNAL values not consecutive"); -static_assert(FLAT == EXTERNAL + 1, "EXTERNAL and FLAT values not consecutive"); +static_assert(RING == BTREE + 1, "BTREE and RING not consecutive"); +static_assert(EXTERNAL == RING + 1, "BTREE and EXTERNAL not consecutive"); +static_assert(FLAT == EXTERNAL + 1, "EXTERNAL and FLAT not consecutive"); struct CordRep { CordRep() = default; @@ -203,6 +206,9 @@ struct CordRep { inline CordRepFlat* flat(); inline const CordRepFlat* flat() const; + inline CordRepBtree* btree(); + inline const CordRepBtree* btree() const; + // -------------------------------------------------------------------- // Memory management |