Add signed_vint::serialized_size_from_first_byte

Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
scylladb · May 9, 2018 · b602dea · b602dea
1 parent 5894631
commit b602dea
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diff --git a/vint-serialization.cc b/vint-serialization.cc
@@ -89,6 +89,10 @@ signed_vint::deserialized_type signed_vint::deserialize(bytes_view v) {
     return deserialized_type{decode_zigzag(un.value), un.size};
 }
 
+vint_size_type signed_vint::serialized_size_from_first_byte(bytes::value_type first_byte) {
+    return unsigned_vint::serialized_size_from_first_byte(first_byte);
+}
+
 // The number of additional bytes that we need to read.
 static vint_size_type count_extra_bytes(int8_t first_byte) {
     // Sign extension.

diff --git a/vint-serialization.hh b/vint-serialization.hh
@@ -63,4 +63,6 @@ struct signed_vint final {
     static vint_size_type serialize(value_type, bytes::iterator out);
 
     static deserialized_type deserialize(bytes_view v);
+
+    static vint_size_type serialized_size_from_first_byte(bytes::value_type first_byte);
 };