Add language support for linting and diagnostics

1 files changed, 93 insertions, 0 deletions

diff --git a/.config/nvim/ftplugin/rust.lua b/.config/nvim/ftplugin/rust.lua
new file mode 100644
index 0000000..349e7ce
--- /dev/null
+++ b/.config/nvim/ftplugin/rust.lua
@@ -0,0 +1,93 @@
+if O.lang.rust.rust_tools.active then
+  local opts = {
+    tools = { -- rust-tools options
+      -- automatically set inlay hints (type hints)
+      -- There is an issue due to which the hints are not applied on the first
+      -- opened file. For now, write to the file to trigger a reapplication of
+      -- the hints or just run :RustSetInlayHints.
+      -- default: true
+      autoSetHints = true,
+
+      -- whether to show hover actions inside the hover window
+      -- this overrides the default hover handler
+      -- default: true
+      hover_with_actions = true,
+
+      runnables = {
+        -- whether to use telescope for selection menu or not
+        -- default: true
+        use_telescope = true,
+
+        -- rest of the opts are forwarded to telescope
+      },
+
+      inlay_hints = {
+        -- wheter to show parameter hints with the inlay hints or not
+        -- default: true
+        show_parameter_hints = true,
+
+        -- prefix for parameter hints
+        -- default: "<-"
+        parameter_hints_prefix = "<-",
+
+        -- prefix for all the other hints (type, chaining)
+        -- default: "=>"
+        other_hints_prefix = "=>",
+
+        -- whether to align to the lenght of the longest line in the file
+        max_len_align = false,
+
+        -- padding from the left if max_len_align is true
+        max_len_align_padding = 1,
+
+        -- whether to align to the extreme right or not
+        right_align = false,
+
+        -- padding from the right if right_align is true
+        right_align_padding = 7,
+      },
+
+      hover_actions = {
+        -- the border that is used for the hover window
+        -- see vim.api.nvim_open_win()
+        border = {
+          { "╭", "FloatBorder" },
+          { "─", "FloatBorder" },
+          { "╮", "FloatBorder" },
+          { "│", "FloatBorder" },
+          { "╯", "FloatBorder" },
+          { "─", "FloatBorder" },
+          { "╰", "FloatBorder" },
+          { "│", "FloatBorder" },
+        },
+      },
+    },
+
+    -- all the opts to send to nvim-lspconfig
+    -- these override the defaults set by rust-tools.nvim
+    -- see https://github.com/neovim/nvim-lspconfig/blob/master/CONFIG.md#rust_analyzer
+    server = {
+      cmd = { DATA_PATH .. "/lspinstall/rust/rust-analyzer" },
+      on_attach = require("cfg.lsp").common_on_attach,
+    }, -- rust-analyser options
+  }
+  require("rust-tools").setup(opts)
+else
+  require("lspconfig").rust_analyzer.setup {
+    cmd = { DATA_PATH .. "/lspinstall/rust/rust-analyzer" },
+    on_attach = require("lsp").common_on_attach,
+    filetypes = { "rust" },
+    root_dir = require("lspconfig.util").root_pattern("Cargo.toml", "rust-project.json"),
+  }
+end
+
+-- TODO fix these mappings
+vim.api.nvim_exec(
+  [[
+    autocmd Filetype rust nnoremap <leader>lm <Cmd>RustExpandMacro<CR>
+    autocmd Filetype rust nnoremap <leader>lH <Cmd>RustToggleInlayHints<CR>
+    autocmd Filetype rust nnoremap <leader>le <Cmd>RustRunnables<CR>
+    autocmd Filetype rust nnoremap <leader>lh <Cmd>RustHoverActions<CR>
+    ]],
+  true
+)