diff options
| -rw-r--r-- | src/util/ConstBuffer.hxx | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/util/ConstBuffer.hxx b/src/util/ConstBuffer.hxx index 4d0a49e98..b98a8b543 100644 --- a/src/util/ConstBuffer.hxx +++ b/src/util/ConstBuffer.hxx @@ -246,6 +246,20 @@ struct ConstBuffer { data += n; size -= n; } + + /** + * Move the front pointer to the given address, and adjust the + * size attribute to retain the old end address. + */ + void MoveFront(pointer_type new_data) { +#ifndef NDEBUG + assert(IsNull() == (new_data == nullptr)); + assert(new_data <= end()); +#endif + + size = end() - new_data; + data = new_data; + } }; #endif |