$ show microsoft/AdaptiveCards
This is a cross-platform software development kit (SDK) for rendering Adaptive Cards—a JSON-based card format used by Microsoft products like Teams, Outlook, and Cortana. The repository provides a shared C++ object model for parsing and serializing card definitions, along with platform-specific renderers for Android, iOS, UWP (WinUI), .NET (WPF), and Node.js. It also includes a templating engine for dynamic data binding, a visual designer tool, and multiple test applications. The architecture is a library/framework model: each platform has its own rendering layer that converts the parsed card model into native UI components. The codebase is large and well-organized, with clear separation between the shared model and platform implementations. However, feature parity across platforms is incomplete (e.g., v1.5 features are missing in .NET renderer), and there is significant duplication of logic across platforms, which introduces maintenance risk.
The LLM identified 1 files worth highlighting for reuse:
The AdaptiveCards.Templating library is a standalone .NET component that evaluates JSON templates with data bindings using a custom grammar (ANTLR). It is cleanly separated from the rendering SDK, with its own lexer, parser, and visitor that produce a string result. This component could be extracted and reused in any project requiring server-side JSON template expansion with conditional logic, loops, and data functions. It demonstrates non-obvious skill in building a custom template language and maintaining AOT compatibility.