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777 lines
20 KiB
Lua
777 lines
20 KiB
Lua
local parsers = require "nvim-treesitter.parsers"
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local configs = require "nvim-treesitter.configs"
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local ts_utils = require "nvim-treesitter.ts_utils"
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local printer = require "nvim-treesitter-playground.printer"
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local utils = require "nvim-treesitter-playground.utils"
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local ts_query = require "nvim-treesitter.query"
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local pl_query = require "nvim-treesitter-playground.query"
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local Promise = require "nvim-treesitter-playground.promise"
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local api = vim.api
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local luv = vim.loop
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local M = {}
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local fs_mkdir = Promise.promisify(luv.fs_mkdir)
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local fs_open = Promise.promisify(luv.fs_open)
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local fs_write = Promise.promisify(luv.fs_write)
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local fs_close = Promise.promisify(luv.fs_close)
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local fs_stat = Promise.promisify(luv.fs_stat)
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local fs_fstat = Promise.promisify(luv.fs_fstat)
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local fs_read = Promise.promisify(luv.fs_read)
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M._entries = setmetatable({}, {
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__index = function(tbl, key)
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local entry = rawget(tbl, key)
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if not entry then
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entry = {
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include_anonymous_nodes = false,
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suppress_injected_languages = false,
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include_language = false,
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include_hl_groups = false,
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focused_language_tree = nil,
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}
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rawset(tbl, key, entry)
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end
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return entry
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end,
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})
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local query_buf_var_name = "TSPlaygroundForBuf"
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local playground_ns = api.nvim_create_namespace "nvim-treesitter-playground"
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local query_hl_ns = api.nvim_create_namespace "nvim-treesitter-playground-query"
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local augroup = vim.api.nvim_create_augroup("TSPlayground", {})
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local function get_node_at_cursor(options)
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options = options or {}
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local include_anonymous = options.include_anonymous
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local lnum, col = unpack(vim.api.nvim_win_get_cursor(0))
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local root_lang_tree = parsers.get_parser()
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-- This can happen in some scenarios... best not assume.
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if not root_lang_tree then
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return
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end
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local owning_lang_tree = root_lang_tree:language_for_range { lnum - 1, col, lnum - 1, col }
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local result
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for _, tree in ipairs(owning_lang_tree:trees()) do
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local range = { lnum - 1, col, lnum - 1, col }
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if utils.node_contains(tree:root(), range) then
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if include_anonymous then
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result = tree:root():descendant_for_range(unpack(range))
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else
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result = tree:root():named_descendant_for_range(unpack(range))
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end
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if result then
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return result
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end
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end
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end
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end
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local function focus_buf(bufnr)
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if not bufnr then
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return
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end
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local windows = vim.fn.win_findbuf(bufnr)
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if windows[1] then
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api.nvim_set_current_win(windows[1])
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end
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end
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local function close_buf_windows(bufnr)
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if not bufnr then
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return
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end
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utils.for_each_buf_window(bufnr, function(window)
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api.nvim_win_close(window, true)
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end)
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end
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local function close_buf(bufnr)
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if not bufnr then
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return
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end
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close_buf_windows(bufnr)
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if api.nvim_buf_is_loaded(bufnr) then
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vim.cmd(string.format("bw! %d", bufnr))
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end
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end
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local function clear_entry(bufnr)
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local entry = M._entries[bufnr]
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close_buf(entry.display_bufnr)
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close_buf(entry.query_bufnr)
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M._entries[bufnr] = nil
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end
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local function is_buf_visible(bufnr)
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local windows = vim.fn.win_findbuf(bufnr)
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return #windows > 0
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end
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local function get_update_time()
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local config = configs.get_module "playground"
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return config and config.updatetime or 25
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end
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local function make_entry_toggle(property, options)
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options = options or {}
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local update_fn = options.update_fn or function(entry)
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entry[property] = not entry[property]
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end
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return function(bufnr)
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bufnr = bufnr or api.nvim_get_current_buf()
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update_fn(M._entries[bufnr])
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local current_cursor = vim.api.nvim_win_get_cursor(0)
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local node_at_cursor = M.get_current_node(bufnr)
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if options.reprocess then
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M.update(bufnr)
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else
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M.render(bufnr)
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end
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-- Restore the cursor to the same node or at least the previous cursor position.
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local cursor_pos = current_cursor
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local node_entries = M._entries[bufnr].results
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if node_at_cursor then
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for lnum, node_entry in ipairs(node_entries) do
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if node_entry.node:id() == node_at_cursor:id() then
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cursor_pos = { lnum, cursor_pos[2] }
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end
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end
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end
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-- This could be out of bounds
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-- TODO(steelsojka): set to end if out of bounds
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pcall(vim.api.nvim_win_set_cursor, 0, cursor_pos)
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end
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end
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local function setup_buf(for_buf)
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if M._entries[for_buf].display_bufnr then
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return M._entries[for_buf].display_bufnr
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end
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local buf = api.nvim_create_buf(false, false)
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api.nvim_buf_set_option(buf, "buftype", "nofile")
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api.nvim_buf_set_option(buf, "swapfile", false)
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api.nvim_buf_set_option(buf, "buflisted", false)
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api.nvim_buf_set_option(buf, "filetype", "tsplayground")
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api.nvim_buf_set_var(buf, query_buf_var_name, for_buf)
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vim.api.nvim_clear_autocmds { group = augroup, buffer = buf }
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vim.api.nvim_create_autocmd("CursorMoved", {
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group = augroup,
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buffer = buf,
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callback = function()
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require("nvim-treesitter-playground.internal").highlight_node(for_buf)
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end,
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desc = "TSPlayground: highlight node",
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})
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vim.api.nvim_create_autocmd("BufLeave", {
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group = augroup,
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buffer = buf,
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callback = function()
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require("nvim-treesitter-playground.internal").clear_highlights(for_buf)
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end,
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desc = "TSPlayground: clear highlights",
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})
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vim.api.nvim_create_autocmd("BufWinEnter", {
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group = augroup,
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buffer = buf,
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callback = function()
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require("nvim-treesitter-playground.internal").update(for_buf)
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end,
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desc = "TSPlayground: update",
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})
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local config = configs.get_module "playground"
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for func, mapping in pairs(config.keybindings) do
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api.nvim_buf_set_keymap(
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buf,
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"n",
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mapping,
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string.format(':lua require "nvim-treesitter-playground.internal".%s(%d)<CR>', func, for_buf),
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{ silent = true, noremap = true }
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)
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end
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api.nvim_buf_attach(buf, false, {
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on_detach = function()
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clear_entry(for_buf)
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end,
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})
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return buf
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end
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local function resolve_lang_tree(bufnr)
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local entry = M._entries[bufnr]
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if entry.focused_language_tree then
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local root_lang_tree = parsers.get_parser(bufnr)
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local found
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root_lang_tree:for_each_child(function(lang_tree)
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if not found and lang_tree == entry.focused_language_tree then
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found = lang_tree
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end
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end)
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if found then
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return found
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end
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end
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end
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local function setup_query_editor(bufnr)
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if M._entries[bufnr].query_bufnr then
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return M._entries[bufnr].query_bufnr
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end
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local buf = api.nvim_create_buf(false, false)
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api.nvim_buf_set_option(buf, "buftype", "nofile")
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api.nvim_buf_set_option(buf, "swapfile", false)
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api.nvim_buf_set_option(buf, "buflisted", false)
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api.nvim_buf_set_option(buf, "filetype", "query")
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api.nvim_buf_set_var(buf, query_buf_var_name, bufnr)
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vim.api.nvim_create_autocmd("CursorMoved", {
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group = augroup,
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buffer = buf,
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callback = function()
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require("nvim-treesitter-playground.internal").on_query_cursor_move(bufnr)
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end,
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desc = "TSPlayground: on query cursor move",
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})
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api.nvim_buf_set_keymap(buf, "n", "R", {
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silent = true,
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noremap = true,
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callback = function()
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require("nvim-treesitter-playground.internal").update_query(bufnr, buf)
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end,
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desc = "TSPlayground: update query",
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})
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api.nvim_buf_attach(buf, false, {
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on_lines = utils.debounce(function()
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M.update_query(bufnr, buf)
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end, 1000),
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})
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local config = configs.get_module "playground"
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if config.persist_queries then
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M.read_saved_query(bufnr):then_(vim.schedule_wrap(function(lines)
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if #lines > 0 then
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api.nvim_buf_set_lines(buf, 0, -1, false, lines)
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end
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end))
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else
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api.nvim_buf_set_lines(buf, 0, -1, false, {
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";; Write your query here like `(node) @capture`,",
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";; put the cursor under the capture to highlight the matches.",
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})
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end
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return buf
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end
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local function get_cache_path()
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return vim.fn.stdpath "cache" .. "/nvim_treesitter_playground"
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end
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local function get_filename(bufnr)
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return vim.fn.fnamemodify(vim.fn.bufname(bufnr), ":t")
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end
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function M.save_query_file(bufnr, query)
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local cache_path = get_cache_path()
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local filename = get_filename(bufnr)
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fs_stat(cache_path)
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:catch(function()
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return fs_mkdir(cache_path, 493)
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end)
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:then_(function()
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return fs_open(cache_path .. "/" .. filename .. "~", "w", 493)
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end)
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:then_(function(fd)
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return fs_write(fd, query, -1):then_(function()
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return fd
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end)
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end)
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:then_(function(fd)
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return fs_close(fd)
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end)
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:catch(function(err)
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print(err)
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end)
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end
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function M.read_saved_query(bufnr)
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local cache_path = get_cache_path()
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local filename = get_filename(bufnr)
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local query_path = cache_path .. "/" .. filename .. "~"
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return fs_open(query_path, "r", 438)
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:then_(function(fd)
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return fs_fstat(fd)
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:then_(function(stat)
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return fs_read(fd, stat.size, 0)
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end)
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:then_(function(data)
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return fs_close(fd):then_(function()
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return vim.split(data, "\n")
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end)
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end)
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end)
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:catch(function()
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return {}
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end)
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end
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function M.focus_language(bufnr)
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local node_entry = M.get_current_entry(bufnr)
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if not node_entry then
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return
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end
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M.update(bufnr, node_entry.language_tree)
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end
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function M.unfocus_language(bufnr)
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M._entries[bufnr].focused_language_tree = nil
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M.update(bufnr)
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end
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function M.highlight_playground_nodes(bufnr, nodes)
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local entry = M._entries[bufnr]
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local results = entry.results
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local display_buf = entry.display_bufnr
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local lines = {}
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local count = 0
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local node_map = utils.to_lookup_table(nodes, function(node)
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return node:id()
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end)
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if not results or not display_buf then
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return
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end
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for line, result in ipairs(results) do
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if node_map[result.node:id()] then
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table.insert(lines, line)
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count = count + 1
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end
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if count >= #nodes then
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break
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end
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end
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for _, lnum in ipairs(lines) do
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local buf_lines = api.nvim_buf_get_lines(display_buf, lnum - 1, lnum, false)
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if buf_lines[1] then
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vim.api.nvim_buf_add_highlight(display_buf, playground_ns, "TSPlaygroundFocus", lnum - 1, 0, -1)
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end
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end
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return lines
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end
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function M.highlight_playground_node_from_buffer(bufnr)
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M.clear_playground_highlights(bufnr)
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local entry = M._entries[bufnr]
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local display_buf = entry.display_bufnr
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if not display_buf then
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return
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end
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local node_at_point = get_node_at_cursor { include_anonymous = entry.include_anonymous_nodes }
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if not node_at_point then
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return
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end
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local lnums = M.highlight_playground_nodes(bufnr, { node_at_point })
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if lnums[1] then
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utils.for_each_buf_window(display_buf, function(window)
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api.nvim_win_set_cursor(window, { lnums[1], 0 })
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end)
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end
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end
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M._highlight_playground_node_debounced = utils.debounce(M.highlight_playground_node_from_buffer, get_update_time)
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function M.get_current_entry(bufnr)
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local row, _ = unpack(api.nvim_win_get_cursor(0))
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local results = M._entries[bufnr].results
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return results and results[row]
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end
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function M.get_current_node(bufnr)
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local entry = M.get_current_entry(bufnr)
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return entry and entry.node
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end
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function M.highlight_node(bufnr)
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M.clear_highlights(bufnr)
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local node = M.get_current_node(bufnr)
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if not node then
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return
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end
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local start_row, start_col, _ = node:start()
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local last_row, last_col = utils.get_end_pos(bufnr)
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-- Set the cursor to the last column
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-- if the node starts at the EOF mark.
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if start_row > last_row then
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start_row = last_row
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start_col = last_col
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end
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M.highlight_nodes(bufnr, { node })
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utils.for_each_buf_window(bufnr, function(window)
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api.nvim_win_set_cursor(window, { start_row + 1, start_col })
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end)
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end
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function M.highlight_nodes(bufnr, nodes)
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for _, node in ipairs(nodes) do
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ts_utils.highlight_node(node, bufnr, playground_ns, "TSPlaygroundFocus")
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end
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end
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function M.goto_node(bufnr)
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local bufwin = vim.fn.win_findbuf(bufnr)[1]
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if bufwin then
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api.nvim_set_current_win(bufwin)
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else
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local node = M.get_current_node(bufnr)
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local win = api.nvim_get_current_win()
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vim.cmd "vsplit"
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api.nvim_win_set_buf(win, bufnr)
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api.nvim_set_current_win(win)
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ts_utils.goto_node(node)
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M.clear_highlights(bufnr)
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end
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end
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function M.update_query(bufnr, query_bufnr)
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local query = table.concat(api.nvim_buf_get_lines(query_bufnr, 0, -1, false), "\n")
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local matches = pl_query.parse(bufnr, query, M._entries[bufnr].focused_language_tree)
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local capture_by_color = {}
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local index = 1
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local config = configs.get_module "playground"
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if config.persist_queries then
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M.save_query_file(bufnr, query)
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end
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M._entries[bufnr].query_results = matches
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M._entries[bufnr].captures = {}
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M.clear_highlights(query_bufnr, query_hl_ns)
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M.clear_highlights(bufnr, query_hl_ns)
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for capture_match in ts_query.iter_group_results(query_bufnr, "captures") do
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table.insert(M._entries[bufnr].captures, capture_match.capture)
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local capture = ts_utils.get_node_text(capture_match.capture.name.node, query_bufnr)[1]
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if not capture_by_color[capture] then
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capture_by_color[capture] = "TSPlaygroundCapture" .. index
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index = index + 1
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end
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ts_utils.highlight_node(capture_match.capture.def.node, query_bufnr, query_hl_ns, capture_by_color[capture])
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end
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local node_highlights = {}
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for _, match in ipairs(matches) do
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local hl_group = capture_by_color[match.tag]
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if hl_group then
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table.insert(node_highlights, { match.node, hl_group })
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end
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end
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for _, entry in ipairs(node_highlights) do
|
|
ts_utils.highlight_node(entry[1], bufnr, query_hl_ns, entry[2])
|
|
end
|
|
end
|
|
|
|
function M.highlight_matched_query_nodes_from_capture(bufnr, capture)
|
|
local query_results = M._entries[bufnr].query_results
|
|
local display_buf = M._entries[bufnr].display_bufnr
|
|
|
|
if not query_results then
|
|
return
|
|
end
|
|
|
|
local nodes_to_highlight = {}
|
|
|
|
for _, result in ipairs(query_results) do
|
|
if result.tag == capture then
|
|
table.insert(nodes_to_highlight, result.node)
|
|
end
|
|
end
|
|
|
|
M.highlight_nodes(bufnr, nodes_to_highlight)
|
|
|
|
if display_buf then
|
|
M.highlight_playground_nodes(bufnr, nodes_to_highlight)
|
|
end
|
|
end
|
|
|
|
function M.on_query_cursor_move(bufnr)
|
|
local node_at_point = get_node_at_cursor { include_anonymous = false }
|
|
local captures = M._entries[bufnr].captures
|
|
|
|
M.clear_highlights(bufnr)
|
|
M.clear_highlights(M._entries[bufnr].display_bufnr)
|
|
|
|
if not node_at_point or not captures then
|
|
return
|
|
end
|
|
|
|
for _, capture in ipairs(captures) do
|
|
local _, _, capture_start = capture.def.node:start()
|
|
local _, _, capture_end = capture.def.node:end_()
|
|
local _, _, start = node_at_point:start()
|
|
local _, _, _end = node_at_point:end_()
|
|
local capture_name = ts_utils.get_node_text(capture.name.node)[1]
|
|
|
|
if start >= capture_start and _end <= capture_end and capture_name then
|
|
M.highlight_matched_query_nodes_from_capture(bufnr, capture_name)
|
|
break
|
|
end
|
|
end
|
|
end
|
|
|
|
function M.clear_highlights(bufnr, namespace)
|
|
if not bufnr then
|
|
return
|
|
end
|
|
|
|
namespace = namespace or playground_ns
|
|
|
|
api.nvim_buf_clear_namespace(bufnr, namespace, 0, -1)
|
|
end
|
|
|
|
function M.clear_playground_highlights(bufnr)
|
|
M.clear_highlights(M._entries[bufnr].display_bufnr)
|
|
end
|
|
|
|
function M.toggle_query_editor(bufnr)
|
|
bufnr = bufnr or api.nvim_get_current_buf()
|
|
|
|
local display_buf = M._entries[bufnr].display_bufnr
|
|
local current_win = api.nvim_get_current_win()
|
|
|
|
if not display_buf then
|
|
display_buf = M.open(bufnr)
|
|
end
|
|
|
|
local query_buf = setup_query_editor(bufnr)
|
|
|
|
if is_buf_visible(query_buf) then
|
|
close_buf_windows(query_buf)
|
|
else
|
|
M._entries[bufnr].query_bufnr = query_buf
|
|
|
|
focus_buf(display_buf)
|
|
vim.cmd "split"
|
|
vim.cmd(string.format("buffer %d", query_buf))
|
|
|
|
api.nvim_win_set_option(0, "spell", false)
|
|
api.nvim_win_set_option(0, "number", true)
|
|
|
|
api.nvim_set_current_win(current_win)
|
|
end
|
|
end
|
|
|
|
function M.open(bufnr)
|
|
bufnr = bufnr or api.nvim_get_current_buf()
|
|
|
|
local display_buf = setup_buf(bufnr)
|
|
local current_window = api.nvim_get_current_win()
|
|
|
|
M._entries[bufnr].display_bufnr = display_buf
|
|
vim.cmd "vsplit"
|
|
vim.cmd(string.format("buffer %d", display_buf))
|
|
|
|
api.nvim_win_set_option(0, "spell", false)
|
|
api.nvim_win_set_option(0, "number", false)
|
|
api.nvim_win_set_option(0, "relativenumber", false)
|
|
api.nvim_win_set_option(0, "cursorline", false)
|
|
|
|
api.nvim_set_current_win(current_window)
|
|
|
|
return display_buf
|
|
end
|
|
|
|
function M.toggle(bufnr)
|
|
bufnr = bufnr or api.nvim_get_current_buf()
|
|
|
|
local success, for_buf = pcall(api.nvim_buf_get_var, bufnr, query_buf_var_name)
|
|
|
|
if success and for_buf then
|
|
bufnr = for_buf
|
|
end
|
|
|
|
local display_buf = M._entries[bufnr].display_bufnr
|
|
|
|
if display_buf and is_buf_visible(display_buf) then
|
|
close_buf_windows(M._entries[bufnr].query_bufnr)
|
|
close_buf_windows(display_buf)
|
|
else
|
|
M.open(bufnr)
|
|
end
|
|
end
|
|
|
|
M.toggle_anonymous_nodes = make_entry_toggle("include_anonymous_nodes", { reprocess = true })
|
|
M.toggle_injected_languages = make_entry_toggle("suppress_injected_languages", { reprocess = true })
|
|
M.toggle_hl_groups = make_entry_toggle("include_hl_groups", { reprocess = true })
|
|
M.toggle_language_display = make_entry_toggle "include_language"
|
|
|
|
function M.update(bufnr, lang_tree)
|
|
bufnr = bufnr or api.nvim_get_current_buf()
|
|
lang_tree = lang_tree or resolve_lang_tree(bufnr)
|
|
|
|
local entry = M._entries[bufnr]
|
|
local display_buf = entry.display_bufnr
|
|
|
|
-- Don't bother updating if the playground isn't shown
|
|
if not display_buf or not is_buf_visible(display_buf) then
|
|
return
|
|
end
|
|
|
|
entry.focused_language_tree = lang_tree
|
|
|
|
local results = printer.process(bufnr, lang_tree, {
|
|
include_anonymous_nodes = entry.include_anonymous_nodes,
|
|
suppress_injected_languages = entry.suppress_injected_languages,
|
|
include_hl_groups = entry.include_hl_groups,
|
|
})
|
|
|
|
M._entries[bufnr].results = results
|
|
M.render(bufnr)
|
|
end
|
|
|
|
function M.render(bufnr)
|
|
bufnr = bufnr or api.nvim_get_current_buf()
|
|
|
|
local entry = M._entries[bufnr]
|
|
local display_buf = entry.display_bufnr
|
|
|
|
-- Don't bother updating if the playground isn't shown
|
|
if not display_buf or not is_buf_visible(display_buf) then
|
|
return
|
|
end
|
|
|
|
api.nvim_buf_set_lines(display_buf, 0, -1, false, printer.print_entries(entry.results))
|
|
|
|
if entry.query_bufnr then
|
|
M.update_query(bufnr, entry.query_bufnr)
|
|
end
|
|
|
|
if entry.include_language then
|
|
printer.print_language(display_buf, entry.results)
|
|
else
|
|
printer.remove_language(display_buf)
|
|
end
|
|
|
|
if entry.include_hl_groups then
|
|
printer.print_hl_groups(display_buf, entry.results)
|
|
else
|
|
printer.remove_hl_groups(display_buf)
|
|
end
|
|
end
|
|
|
|
function M.show_help()
|
|
local function filter(item, path)
|
|
if path[#path] == vim.inspect.METATABLE then
|
|
return
|
|
end
|
|
return item
|
|
end
|
|
print "Current keybindings:"
|
|
print(vim.inspect(configs.get_module("playground").keybindings, { process = filter }))
|
|
end
|
|
|
|
function M.get_entries()
|
|
return M._entries
|
|
end
|
|
|
|
function M.attach(bufnr)
|
|
api.nvim_buf_attach(bufnr, true, {
|
|
on_lines = vim.schedule_wrap(utils.debounce(function()
|
|
M.update(bufnr)
|
|
end, get_update_time)),
|
|
})
|
|
|
|
vim.api.nvim_clear_autocmds { group = augroup, buffer = bufnr }
|
|
vim.api.nvim_create_autocmd("CursorMoved", {
|
|
group = augroup,
|
|
buffer = bufnr,
|
|
callback = function()
|
|
require("nvim-treesitter-playground.internal")._highlight_playground_node_debounced(bufnr)
|
|
end,
|
|
desc = "TSPlayground: highlight playground node debounce",
|
|
})
|
|
vim.api.nvim_create_autocmd("BufLeave", {
|
|
group = augroup,
|
|
buffer = bufnr,
|
|
callback = function()
|
|
require("nvim-treesitter-playground.internal").clear_playground_highlights(bufnr)
|
|
end,
|
|
desc = "TSPlayground: clear playground highlights",
|
|
})
|
|
end
|
|
|
|
function M.detach(bufnr)
|
|
clear_entry(bufnr)
|
|
vim.api.nvim_clear_autocmds { group = augroup, buffer = bufnr, event = { "CursorMoved", "BufLeave" } }
|
|
end
|
|
|
|
return M
|