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Move Analyzer VS Code Extension

The Move Analyzer extension for Visual Studio Code provides language support features for the Move programming language. It enables syntax highlighting, code completion, and advanced features like definition linking and type checking.

Install​

You can install the Move extension from the Visual Studio Code Marketplace:

  1. Open VS Code.
  2. Open the Extensions view (⇧ + ⌘ + X on macOS, Ctrl + Shift + X on Windows/Linux).
  3. Search for mysten.move.
  4. Click Install on the Move extension by Mysten Labs.

Alternative install methods include:

  • Use Ctrl + P or ⌘ + P and type ext install mysten.move.

  • Use the command line:

    $ code --install-extension mysten.move

The following extensions are included in the Move extension install:

Install move-analyzer​

The Move extension attempts to install the appropriate move-analyzer binary for your platform. If this doesn't work, or you prefer to install it manually, build it with Cargo:

$ cargo install --git https://github.com/MystenLabs/sui.git sui-move-lsp

By default, the Move extension expects to find the move-analyzer binary in ~/.sui/bin. You can either copy the binary to this location, or configure the extension to use a different path.

Features​

The Move extension supports most Language Server Protocol features, as well as basic commands for building, testing, and tracing Move code.

Build, test, and trace​

The Move extension installs command palette commands for building, testing, and tracing Move code.

Move commands in the command palette

These commands find the Move.toml file for the open Move source file and open a terminal to run the appropriate sui move command.

To execute these commands you must have sui binary installed, in particular, to generate a trace, the sui binary version must be trace-generation capable. See Debugger for installation instructions. The extension will search for the sui binary on a system path but you can configure the extension to use a different path.

Syntax highlighting​

The Move Syntax extension provides syntax highlighting.

Hover information​

Hovering over identifiers shows type information, struct fields and attributes, and docstrings (if any) for the identifier. This works for all Move symbols including macros.

  • Hover over structs to see structure and definition.

    Struct hoverover

  • Hover over functions for details and definition.

    Function hoverover

  • Hover over macros for their functionality.

    Macro hoverover

Code completion​

The Move extension autocompletes upon a dot operator, displaying the available methods and fields for the type.

Code completion

The Move extension also autocompletes after a :: operator.

Type completion

Finally, the Move extension provides inlay hints, where the plugin automatically inserts the correct type after a variable declaration, unpack, function parameters, and other places.

Inlay hints

The Move extension supports go-to-definition navigation for all Move symbols including types, functions, and macros, as long as the type was present when move-analyzer last built the file.

The extension also supports find-references for functions, macros, constants, and types.