Flatbuffers Schema colorizer for Visual Studio Code

This simple language support module provides syntax highlighting for FlatBuffers schema definition files (.fbs).

More about the Flatbuffers schema: https://flatbuffers.dev/schema/

Features

• ✅ Full Grammar Support - 100% coverage of the official FlatBuffers grammar specification (as of 03/05/2026)
• ✅ All Data Types - Support for all basic and extended numeric types (int8, uint8, int16, uint16, int32, uint32, int64, uint64, float32, float64)
• ✅ RPC Services - Complete support for rpc_service declarations for gRPC integration
• ✅ Metadata Attributes - All standard and custom metadata attributes

Screenshot

Sample File

See sample.fbs for a comprehensive example demonstrating all supported grammar features.

References

• Official Grammar: https://flatbuffers.dev/grammar/
• Schema Documentation: https://flatbuffers.dev/schema/
• FlatBuffers Tutorial: https://flatbuffers.dev/tutorial/

Acknowledgements

I used the grammar file from Tobias Kahlert's Flatbuffers plugin for Atom and converted it to JSON to use it here. The grammar has been extended to support the full modern FlatBuffers specification.