For this reason it is important to enable smart mode only when you trust the code authors. Actions like importing projects, running scripts, and executing Git commands may run malicious code. This list is not exhaustive and may vary for different languages and plugins.Īccording to the documentation, for Fleet’s smart mode features to work, it may need to execute project code, which might pose a problem when its source is untrusted. Smart mode is required for semantic highlighting, code completion, code refactoring, navigation, find usages, and type information retrieval for parameters and expressions. Once I had permission to join the closed preview, I installed Fleet from the JetBrains Toolbox app on my MacBook Pro. Once Fleet is ready, which may be some months, it will be opened up to public preview. Installing Fleetīecause Fleet is currently in a closed beta, you need to apply for permission to try it out. Support for PHP, C++, C#, and HTML will be available “soon.” Fleet doesn’t yet support Scala, Groovy, or any other programming language not mentioned above. Fleet language supportįleet currently supports development in Java, Kotlin, Go, Python, JavaScript, JSON, TypeScript, and Rust. IJ is an IntelliJ engine, and LSP is a Language Server Protocol instance. FSD is the Fleet System Daemon, which is an agent used to build the project, run code, and execute terminal commands. Multiple front ends correspond to multiple users, and multiple back ends perform different functions. The diagram shows the architecture of Fleet. Fleet uses Rust for the Fleet System Daemon. The UI framework is a home-grown solution using Skia (via Skiko). It is used to build the project, run code, execute terminal commands, and perform other actions in the target environment on behalf of Fleet.įleet is mainly written in Kotlin, which means it runs on the JVM. FSD (Fleet System Daemon) – a Fleet agent typically attached to the system where source code and SDKs reside.For example, language servers need to run on the same machine where the source code is located, as shown in the diagram. Note that back ends may have different requirements. As a back end, you can use a headless IntelliJ IDEA or a language server. Every such operation is initiated by a request from the workspace, which then processes the response and dispatches the data to the components that require it. Back end – a headless service that does the heavy lifting: indexing, static analysis, advanced search, navigation, and the like.It also registers other components to provide information on the available services and APIs. Workspace – the component whose main purpose is maintaining the front ends’ shared state when there are several of them.There can be more than one front end attached to a workspace, allowing for collaborative development. Front end – delivers the UI, parses the files, and provides limited highlighting for supported file types. Fleet architectureįleet uses a distributed architecture that aims at simplicity of use for standalone instances, while also supporting collaborative development, remote/cloud IDEs, and multiple target file systems.Īs shown in Figure 1 below, the Fleet architecture includes: Fleet already has a language server architecture, but its plugin architecture is still being developed. In many ways, the most direct competitor to Fleet is Visual Studio Code, with its language server architecture and large ecosystem of plugins. Indexing a large project can take awhile. Once you’ve loaded a code directory, you can turn on “smart” mode, which indexes your code and enables IDE functionality, such as project and context-aware code completion, navigation to definitions and usages, on-the-fly code quality checks, and quick fixes. When you start it up, Fleet is a lightweight code editor. I said earlier that Fleet is an editor and IDE. For some other languages, Fleet uses a language server, à la Visual Studio Code, instead of the IntelliJ engine. JetBrains says Fleet was “built from scratch,” based on its 20 years of experience developing IDEs, and featurs “a distributed IDE architecture and a reimagined UI.” For Java, Fleet uses the IntelliJ code-processing engine. Fleet will not replace any existing JetBrains IDEs. Fleet is separate from JetBrains’ effort to overhaul the user interfaces and user experiences of its existing IDEs, such as IntelliJ IDEA, without changing the IDEs’ code-centric features and integrations. JetBrains Fleet is a new multi-language programming editor and IDE that represents JetBrains’ attempt to rebuild the entire integrated development environment from scratch.
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