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117 lines
2.8 KiB
Lua
117 lines
2.8 KiB
Lua
local a = vim.api
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local query = require'vim.treesitter.query'
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local language = require'vim.treesitter.language'
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local LanguageTree = require'vim.treesitter.languagetree'
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-- TODO(bfredl): currently we retain parsers for the lifetime of the buffer.
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-- Consider use weak references to release parser if all plugins are done with
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-- it.
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local parsers = {}
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local M = vim.tbl_extend("error", query, language)
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M.language_version = vim._ts_get_language_version()
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setmetatable(M, {
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__index = function (t, k)
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if k == "highlighter" then
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t[k] = require'vim.treesitter.highlighter'
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return t[k]
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elseif k == "language" then
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t[k] = require"vim.treesitter.language"
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return t[k]
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elseif k == "query" then
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t[k] = require"vim.treesitter.query"
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return t[k]
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end
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end
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})
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--- Creates a new parser.
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---
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--- It is not recommended to use this, use vim.treesitter.get_parser() instead.
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---
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---@param bufnr The buffer the parser will be tied to
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---@param lang The language of the parser
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---@param opts Options to pass to the created language tree
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function M._create_parser(bufnr, lang, opts)
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language.require_language(lang)
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if bufnr == 0 then
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bufnr = a.nvim_get_current_buf()
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end
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vim.fn.bufload(bufnr)
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local self = LanguageTree.new(bufnr, lang, opts)
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---@private
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local function bytes_cb(_, ...)
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self:_on_bytes(...)
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end
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---@private
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local function detach_cb(_, ...)
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if parsers[bufnr] == self then
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parsers[bufnr] = nil
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end
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self:_on_detach(...)
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end
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---@private
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local function reload_cb(_, ...)
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self:_on_reload(...)
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end
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a.nvim_buf_attach(self:source(), false, {on_bytes=bytes_cb, on_detach=detach_cb, on_reload=reload_cb, preview=true})
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self:parse()
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return self
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end
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--- Gets the parser for this bufnr / ft combination.
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---
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--- If needed this will create the parser.
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--- Unconditionnally attach the provided callback
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---
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---@param bufnr The buffer the parser should be tied to
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---@param lang The filetype of this parser
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---@param opts Options object to pass to the created language tree
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---
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---@returns The parser
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function M.get_parser(bufnr, lang, opts)
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opts = opts or {}
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if bufnr == nil or bufnr == 0 then
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bufnr = a.nvim_get_current_buf()
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end
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if lang == nil then
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lang = a.nvim_buf_get_option(bufnr, "filetype")
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end
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if parsers[bufnr] == nil then
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parsers[bufnr] = M._create_parser(bufnr, lang, opts)
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end
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parsers[bufnr]:register_cbs(opts.buf_attach_cbs)
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return parsers[bufnr]
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end
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--- Gets a string parser
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---
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---@param str The string to parse
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---@param lang The language of this string
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---@param opts Options to pass to the created language tree
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function M.get_string_parser(str, lang, opts)
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vim.validate {
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str = { str, 'string' },
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lang = { lang, 'string' }
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}
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language.require_language(lang)
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return LanguageTree.new(str, lang, opts)
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end
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return M
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