lfortran/lfortran-lsp

LFortran language server protocol (LSP).

lfortran-lsp

LFortran implementation of LSP for VSCode.

Key Features

1. Linting: highlights errors and warnings in your LFortran code which helps you to identify and correct programming errors.
2. Document Symbol Lookup: You can navigate symbols inside a file with Ctrl + Shift + O. By typing : the symbols are grouped by category. Press Up or Down and navigate to the place you want.

Language Server

• The Language Server is written in TypeScript, which uses Microsoft’s official language server module.
• Communication between the language server and LFortran Compiler is done with:

const stdout = await runCompiler(text, "<flags>", settings); `

Usage

Compile lfortran with the option -DWITH_LSP=yes:

conda activate lf # or use your environment name here
./build0.sh
cmake -DCMAKE_BUILD_TYPE=Debug \
  -DWITH_LSP=yes \
  -DWITH_LLVM=yes \
  -DCMAKE_INSTALL_PREFIX=`pwd`/inst \
  .
cmake --build . -j8

1. Clone https://github.com/dylon/lfortran-lsp
2. Go to: lfortran-lsp/src/server.ts file and replace the binary path of LFortran in line number 103 to your binary path.
3. Go to: lfortran-lsp/package.json file and replace the binary path of LFortran in line number 61 to your binary path.
4. Build the extension:

cd lfortran-lsp && npm install && npm run compile

Open VSCode in the extension folder (code editor/vscode/lsp-sample/) and run ctrl + shift + D, click on “Run and Debug” and choose VSCode Extension Development, and test the extension. :)

To package the extension, you can do:

npm install -g vsce
vsce package

This will generate a .vsix file in your lfortran-lsp folder, which can then be imported as an extension. You can go to extensions in VSCode, click on ... on the top right, click on “Install from VSIX” and select the VSIX, and done (may require a reload). The extension has now been installed.

Testing

To test the extension, please run npm run test.