  Software architectural changes involve more than one module or component and
are complex to analyze compared to local code changes. Development teams aiming
to review architectural aspects (design) of a change commit consider many
essential scenarios such as access rules and restrictions on usage of program
entities across modules. Moreover, design review is essential when proper
architectural formulations are paramount for developing and deploying a system.
Untangling architectural changes, recovering semantic design, and producing
design notes are the crucial tasks of the design review process. To support
these tasks, we construct a lightweight tool [4] that can detect and decompose
semantic slices of a commit containing architectural instances. A semantic
slice consists of a description of relational information of involved modules,
their classes, methods and connected modules in a change instance, which is
easy to understand to a reviewer. We extract various directory and naming
structures (DANS) properties from the source code for developing our tool.
Utilizing the DANS properties, our tool first detects architectural change
instances based on our defined metric and then decomposes the slices (based on
string processing). Our preliminary investigation with ten open-source projects
(developed in Java and Kotlin) reveals that the DANS properties produce highly
reliable precision and recall (93-100%) for detecting and generating
architectural slices. Our proposed tool will serve as the preliminary approach
for the semantic design recovery and design summary generation for the project
releases.
