diff options
| -rw-r--r-- | README.md | 8 | ||||
| -rw-r--r-- | lua/conform/init.lua | 37 |
2 files changed, 44 insertions, 1 deletions
@@ -150,7 +150,13 @@ require("conform").setup({ See [conform.format()](#formatopts-callback) for more details about the parameters. -To view configured and available formatters, as well as to see the path to the log file, run `:ConformInfo` +Conform also provides a formatexpr, same as the LSP client: + +```lua +vim.o.formatexpr = "v:lua.require'conform'.formatexpr()" +``` + +To view configured and available formatters, as well as to see the log file, run `:ConformInfo` ## Formatters diff --git a/lua/conform/init.lua b/lua/conform/init.lua index a19813e..07c46a3 100644 --- a/lua/conform/init.lua +++ b/lua/conform/init.lua @@ -343,6 +343,7 @@ M.format = function(opts, callback) elseif opts.lsp_fallback and not vim.tbl_isempty(lsp_format.get_format_clients(opts)) then log.debug("Running LSP formatter on %s", vim.api.nvim_buf_get_name(opts.bufnr)) lsp_format.format(opts, callback) + any_formatters = true elseif any_formatters_configured and not opts.quiet then vim.notify("No formatters found for buffer. See :ConformInfo", vim.log.levels.WARN) callback("No formatters found for buffer") @@ -480,4 +481,40 @@ M.get_formatter_info = function(formatter, bufnr) } end +M.formatexpr = function(opts) + -- Change the defaults slightly from conform.format + opts = vim.tbl_deep_extend("keep", opts or {}, { + timeout_ms = 500, + lsp_fallback = true, + }) + -- Force async = false + opts.async = false + if vim.tbl_contains({ "i", "R", "ic", "ix" }, vim.fn.mode()) then + -- `formatexpr` is also called when exceeding `textwidth` in insert mode + -- fall back to internal formatting + return 1 + end + + local start_lnum = vim.v.lnum + local end_lnum = start_lnum + vim.v.count - 1 + + if start_lnum <= 0 or end_lnum <= 0 then + return 0 + end + local end_line = vim.fn.getline(end_lnum) + local end_col = end_line:len() + opts.range = { + start = { start_lnum, 0 }, + ["end"] = { end_lnum, end_col }, + } + if M.format(opts) then + return 0 + elseif opts.lsp_fallback then + -- No formatters were available; fall back to lsp formatter + return vim.lsp.formatexpr({ timeout_ms = opts.timeout_ms }) + else + return 1 + end +end + return M |