Language Server Protocol and Implementation: Supporting Language-Smart Editing and Programming Tools

This book covers the language server protocol used for communication between programming tools and your language server. The book also provides an in-depth understanding of the design, implementation, and user experience aspects which should be considered when implementing a language server. The book walks you through an example language server implementation to illustrate the basic concepts, then goes on to cover advanced aspects of language server use such as progress reporting, launchers, and extension points. 

User experience is an important aspect of language server implementation and different tooling vendors strive to provide their own unique user experiences. This book explains how the protocol features can be leveraged to address the unique developer experience provided by different tooling vendors. The book also shows how to enhance the smoothness of the editing experience by orchestrating multiple features together.

• Implement a language server from scratch
• Understand language server protocol and its data models
• Leverage the protocol while preserving the unique user experience of different editors
• Extend the protocol to support more than its standard capabilities
• Run a language server on top of launchers such as standard I/O and TCP socket
• Seamlessly incorporate language semantics into your protocol features

Nipuna Marcus is Technical Lead at WSO2 and has more than five years of experience in front end development, programming languages, and developer tooling. He was a member of the Ballerina Language Server team and a key contributor to the Ballerina programming language.