Add hoverRange capability

[SamClercky]

Hi,

The latest release of rust-analyzer added the ability to view the type of selected code in visual mode while hovering.

I really wanted that to be enabled in neovim and hacked something together 😄 .

I added a new command RustHoverRange and an experimental capability which will do the work of making the request. It uses the default hover handler for better integration with the hover actions.

I added the new command to the documentation, but did not make a gif of how it works (didn't know how 😢 )

Here some extra links:

• PR hoverRange in rust-analyzer with example gif
• Specification of the protocol in rust-analyzer

Hope you like it! 👍

[simrat39]

Sorry for the late response and thanks for the PR! I'll check it out later

[Artturin]

Hello, how to use this?

i have this keybinding

    buf_set_keymap("v", "<C-space>", "<cmd>RustHoverRange<CR>", opts)

and when i select something and press control space a error pops up

Error executing vim.schedule lua callback: ...ker/start/rust-tools.nvim/lua/rust-tools/utils/utils.lua:99: attempt to call upva
lue 'fn' (a nil value)
stack traceback:
        ...ker/start/rust-tools.nvim/lua/rust-tools/utils/utils.lua:99: in function 'handler'
        ...eovim-unwrapped-0.6.1/share/nvim/runtime/lua/vim/lsp.lua:964: in function 'cb'
        vim.lua:285: in function <vim.lua:285>