This is lua debugger built in rust, where the lua vm is provided by the mlua package.

Features:

• load external dynamic libraries (.dll/.so)
• version support (5.1-5.5+luajit)
• breakpoints
• function breakpoints (this is implemented, but zed currently doesn't support this.)
• conditional breakpoints
• exception breakpoints
• upvalues
• variables
• set variables while breakpoint
• step over, step in, step out
• watches
• evaluate expressions
• exception

1.) rustup target add wasm32-wasip2 (This is required to install a local zed extension)

2.) Download lua-debugger-extension-source.zip & the binary lua-dap-xxx.zip for your OS.

3.) Unzip Extension. In the extracted folder, run cargo build --target wasm32-wasip2 --release

4.) Open up zed extensions. top-right, select install dev extension. point it to the unzipped folder.

5.) Unzip lua-dap-xxx.zip. In the Zed settings.json point to the directory like as follows:

{
  "dap": {
    "lua": {
      "binary": "C:\\Users\\User\\Documents\\GitHub\\lua-debug-zed\\dap-binary",
    }
  }
}

6.) Then open the directory that you want to debug lua. In that directory create .zed/debug.json. Add as follows:

[
    {
      "adapter": "lua",
      "label": "Debug a Lua script",
      "request": "launch",
      "program": "${workspaceFolder}/main.lua",
      "stopOnEntry": false,
      "preloadPaths": ["${workspaceFolder}/lib"],
      "luaVersion": "5.3"
    }
]

Add WASM target rustup target add wasm32-wasip2

Build WASM extension cargo build --target wasm32-wasip2 -p zed-lua-debug-extension --release

Build debug server cargo build -p lua-dap-server --release

1.) Clone repo

2.) rustup target add wasm32-wasip2

3.) open up zed extensions. Top-right, select install dev extension. Point it to the ./zed-extension directory of this project

If on windows, run the .ps1 script to build the necessary .dll files to link against

4.) build dap server cargo build -p lua-dap-server --bin lua-dap-server. Defaults to lua53, change Cargo.toml to build another version.

5.) create debug.json file in the directory like as follows:

[
    {
      "adapter": "lua",
      "label": "Debug a Lua script",
      "request": "launch",
      "program": "${workspaceFolder}/main.lua",
      "stopOnEntry": false,
      "preloadPaths": ["${workspaceFolder}/lib"],
      "debugServerPath": "${workspaceFolder}/target/debug/lua-dap-server.exe",
      "luaVersion": "5.3"
    }
]

Where debugServerPath points to binary generated from lua-dap-server. This variable overwrites luaVersion and anything in settings.json.

Run Zed Debugger (lldb)

type in terminal: Content-Length: 71\r\n\r\n{"seq":1,"type":"request","command":"initialize","arguments":{}}