ci: install parsers

.github/workflows/ci.yml

@@ -38,5 +38,8 @@ jobs:
       - name: Download nvim-test
         run: make nvim-test
 
+      - name: Install parsers
+        run: make parsers NEOVIM_VERSION=$NEOVIM_VERSION
+
       - name: Run Test
         run: make test NEOVIM_VERSION=$NEOVIM_VERSION

.github/workflows/nightly.yml

@@ -30,6 +30,9 @@ jobs:
       - name: Download nvim-test
         run: make nvim-test
 
+      - name: Install parsers
+        run: make parsers NEOVIM_VERSION=$NEOVIM_VERSION
+
       - name: Run Test
         run: make test NVIM_TS_SHA=$NVIM_TS_SHA
 

Makefile

@@ -15,6 +15,8 @@ nvim-treesitter:
 nvim-test:
 	git clone https://github.com/lewis6991/nvim-test
 	nvim-test/bin/nvim-test --init
+		--runner_version $(NEOVIM_VERSION) \
+		--target_version $(NEOVIM_VERSION)
 
 .PHONY: test
 test: nvim-test nvim-treesitter
@@ -25,5 +27,10 @@ test: nvim-test nvim-treesitter
 		--filter=$(FILTER) \
 		--verbose
 
+.PHONY: parsers
+parsers: nvim-test
+	$(XDG_DATA_HOME)/nvim-test/nvim-test-$(NEOVIM_VERSION)/bin/nvim \
+		--clean -u NONE -c 'source install_parsers.lua'
+
 lint:
 	luacheck lua

install_parsers.lua

@@ -0,0 +1,33 @@
+
+local function get_langs()
+  local f = assert(io.open('README.md', 'r'))
+  local readme_langs = {} --- @type table<string,true>
+  for l in f:lines() do
+    --- @type string?
+    local lang = l:match('%- %[x%] `([^`]+)`')
+    if lang then
+      readme_langs[lang] = true
+    end
+  end
+  f:close()
+
+  f = assert(io.open('nvim-treesitter/lockfile.json', 'r'))
+  local txt = f:read('*a')
+  local j = vim.json.decode(txt)
+
+  local langs = {} --- @type string[]
+  for k in pairs(j) do
+    if readme_langs[k] then
+      langs[#langs+1] = k
+      readme_langs[k] = nil
+    end
+  end
+  print('Invalid languages:', table.concat(vim.tbl_keys(readme_langs), ', '))
+  return langs
+end
+
+vim.cmd [[set runtimepath+=.,./nvim-treesitter]]
+require'nvim-treesitter.install'.prefer_git = false
+require("nvim-treesitter").setup()
+require'nvim-treesitter.install'.ensure_installed_sync(get_langs())
+vim.cmd.quit()