Add DAP support for metals

lua/lsp/metals.lua

@@ -4,9 +4,36 @@ if (not status) then return function() end end
 return function(on_attach)
     metals_config = metals.bare_config()
     metals_config.init_options.statusBarProvider = "on"
-    metals_config.settings = { showImplicitArguments = true }
+    metals_config.settings = {
-    metals_config.on_attach = on_attach
+      showImplicitArguments = true,
+      superMethodLensesEnabled = true,
+    }
+    metals_config.on_attach = function(client, bufnr)
+        require("metals").setup_dap()
+        on_attach(client, bufnr)
+    end
     metals_config.capabilities = require("cmp_nvim_lsp").default_capabilities()
+    -- Debug settings if you're using nvim-dap
+    local dap = require("dap")
+    dap.configurations.scala = {
+      {
+        type = "scala",
+        request = "launch",
+        name = "RunOrTest",
+        metals = {
+          runType = "runOrTestFile",
+          --args = { "firstArg", "secondArg", "thirdArg" }, -- here just as an example
+        },
+      },
+      {
+        type = "scala",
+        request = "launch",
+        name = "Test Target",
+        metals = {
+          runType = "testTarget",
+        },
+      },
+    }
 
 
     vim.cmd [[augroup lsp]]

lua/my-lsp.lua

@@ -17,14 +17,15 @@ lsp_status.register_progress()
 -- Use an on_attach function to only map the following keys
 -- after the language server attaches to the current buffer
 local on_attach = function(client, bufnr)
-	local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
+	local function buf_set_keymap(...) vim.keymap.set(...) end
 	local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end
 
 	--Enable completion triggered by <c-x><c-o>
-	buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')
+	vim.bo[bufnr].omnifunc = 'v:lua.vim.lsp.omnifunc'
 
 	-- Mappings.
-	local opts = { noremap=true, silent=true }
+	local opts = { noremap=true, silent=true, buffer=bufnr }
+	local loud = { noremap=true, buffer=bufnr }
 
 	-- 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)
@@ -35,13 +36,21 @@ local on_attach = function(client, bufnr)
 	buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
 	buf_set_keymap('n', '<Leader>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
 	buf_set_keymap('n', '<Leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
-	buf_set_keymap('n', '<M-a>', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
+	buf_set_keymap('n', '<M-a>', '<cmd>lua vim.lsp.buf.code_action()<CR>', loud)
+	buf_set_keymap('n', '<M-l>', '<cmd>lua vim.codelens.run()<CR>', loud)
 	buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
 	buf_set_keymap('n', '<M-e>', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
 	buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
 	buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
 	buf_set_keymap('n', '<M-q>', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
 	buf_set_keymap("n", "<Leader>f", "<cmd>lua vim.lsp.buf.formatting()<CR>", opts)
+	buf_set_keymap("n", "<leader>dc", function() require("dap").continue() end, opts)
+	buf_set_keymap("n", "<leader>dr", function() require("dap").repl.toggle() end, opts)
+	buf_set_keymap("n", "<leader>dK", function() require("dap.ui.widgets").hover() end, opts)
+	buf_set_keymap("n", "<leader>dt", function() require("dap").toggle_breakpoint() end, opts)
+	buf_set_keymap("n", "<leader>dso", function() require("dap").step_over() end, opts)
+	buf_set_keymap("n", "<leader>dsi", function() require("dap").step_into() end, opts)
+	buf_set_keymap("n", "<leader>dl", function() require("dap").run_last() end, opts)
 
 	lsp_status.on_attach(client)
 

packages.vim

@@ -52,6 +52,8 @@ Plug 'nvim-telescope/telescope.nvim'
 Plug 'nvim-telescope/telescope-fzf-native.nvim', { 'do': 'cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release && cmake --build build --config Release && cmake --install build --prefix build' }
 Plug 'gbrlsnchs/telescope-lsp-handlers.nvim'
 
+Plug 'mfussenegger/nvim-dap'
+
 
 Plug 'machakann/vim-highlightedyank'