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f9080b24c4
When trying to load a language parser, escape the value of
the language.
With language injection, the language might be picked up from the
buffer. If this value is erroneous it can cause `nvim_get_runtime_file`
to hard error.
E.g., the markdown expression `~~~{` will extract '{' as a language and
then try to get the parser using `parser/{*` as the pattern.
50 lines
1.2 KiB
Lua
50 lines
1.2 KiB
Lua
local a = vim.api
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local M = {}
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--- Asserts that the provided language is installed, and optionally provide a path for the parser
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---
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--- Parsers are searched in the `parser` runtime directory.
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---
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---@param lang The language the parser should parse
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---@param path Optional path the parser is located at
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---@param silent Don't throw an error if language not found
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function M.require_language(lang, path, silent)
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if vim._ts_has_language(lang) then
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return true
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end
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if path == nil then
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local fname = 'parser/' .. vim.fn.fnameescape(lang) .. '.*'
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local paths = a.nvim_get_runtime_file(fname, false)
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if #paths == 0 then
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if silent then
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return false
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end
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-- TODO(bfredl): help tag?
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error("no parser for '"..lang.."' language, see :help treesitter-parsers")
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end
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path = paths[1]
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end
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if silent then
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return pcall(function() vim._ts_add_language(path, lang) end)
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else
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vim._ts_add_language(path, lang)
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end
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return true
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end
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--- Inspects the provided language.
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---
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--- Inspecting provides some useful information on the language like node names, ...
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---
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---@param lang The language.
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function M.inspect_language(lang)
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M.require_language(lang)
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return vim._ts_inspect_language(lang)
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end
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return M
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