1 files changed, 77 insertions, 0 deletions
diff --git a/.config/nvim/lua/lsp_conf.lua b/.config/nvim/lua/lsp_conf.lua
new file mode 100644
index 0000000..e339a5c
--- /dev/null
+++ b/.config/nvim/lua/lsp_conf.lua
@@ -0,0 +1,77 @@
+local nvim_lsp = require('lspconfig')
+local coq = require('coq')
+local null_ls = require("null-ls")
+local trouble = require("trouble")
+
+-- Redefine sign.
+local signs = { Error = 'E', Warning = 'W', Hint = 'H', Information = 'I' }
+
+for type, icon in pairs(signs) do
+  local hl = 'LspDiagnosticsSign' .. type
+  vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = '' })
+end
+
+local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
+local opts = { noremap=true, silent=true }
+
+null_ls.config({
+    debug = false,
+    save_after_format = false,
+    sources = {
+        -- Python
+        null_ls.builtins.formatting.black,
+        null_ls.builtins.formatting.isort,
+        null_ls.builtins.diagnostics.flake8,
+        -- Rust
+        null_ls.builtins.formatting.rustfmt,
+        -- C
+        null_ls.builtins.formatting.clang_format,
+        -- JS/TS
+        null_ls.builtins.formatting.prettier,
+    }
+})
+
+-- Setup lspconfig. 
+ 
+--- Use a loop to conveniently call 'setup' on multiple servers and
+-- map buffer local keybindings when the language server attaches
+local servers = { 'pyright', 'rust_analyzer', 'tsserver', 'clangd' }
+for _, lsp in ipairs(servers) do
+  nvim_lsp[lsp].setup {
+    capabilities = coq.lsp_ensure_capabilities(),
+    on_attach = function(client, bufnr)
+      client.resolved_capabilities.document_formatting = false
+
+      require "lsp_signature".on_attach()
+
+      -- Mappings.
+      local opts = { noremap=true, silent=true }
+
+      -- See `:help vim.lsp.*` for documentation on any of the below functions
+      buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
+      buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
+      buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
+      buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
+      buf_set_keymap('n', '<space>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
+    end,
+    flags = {
+      debounce_text_changes = 150,
+    }
+  }
+end
+
+nvim_lsp["null-ls"].setup({
+    on_attach = function(client)
+        if client.resolved_capabilities.document_formatting then
+            buf_set_keymap('n', '<A-f>', '<cmd>lua vim.lsp.buf.formatting_sync()<cr>', opts)
+            vim.cmd "autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_seq_sync()"
+        end
+    end
+})
+
+trouble.setup({
+    use_lsp_diagnostic_signs = true,
+    auto_close = true,
+    auto_open = true
+})
+