Crypto: Refactor hash computation

... by renaming HashGenerator to (incremental) Hasher and
dropping support for Git/MD5 hashes. The Hasher does not
expose the actual hash implementation.

1 files changed, 1 insertions, 6 deletions

diff --git a/src/buildtool/build_engine/expression/expression.cpp b/src/buildtool/build_engine/expression/expression.cpp
index 91d293bc..6ae9bd87 100644
--- a/src/buildtool/build_engine/expression/expression.cpp
+++ b/src/buildtool/build_engine/expression/expression.cpp
@@ -239,12 +239,7 @@ auto Expression::ComputeHash() const noexcept -> std::string {
                 hasher.Update(el.second->ToHash());
             }
         }
-        auto digest = std::move(hasher).Finalize();
-        if (not digest) {
-            Logger::Log(LogLevel::Error, "Failed to finalize hash.");
-            std::terminate();
-        }
-        hash = digest->Bytes();
+        hash = std::move(hasher).Finalize().Bytes();
     }
     return hash;
 }