mirror of https://github.com/bfredl/nvim-luadev
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174 lines
4.1 KiB
Lua
174 lines
4.1 KiB
Lua
local nvimlua_inspect = require'luadev.inspect'
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local a = vim.api
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if _G.__lua_dev_state == nil then
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_G.__lua_dev_state = {}
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end
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local s = _G.__lua_dev_state
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local function create_buf()
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if s.buf ~= nil then
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return
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end
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local buf = a.nvim_create_buf(true,true)
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a.nvim_buf_set_name(buf, "[nvim-lua]")
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s.buf = buf
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end
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local function open_win()
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if s.win and a.nvim_win_is_valid(s.win) and a.nvim_win_get_buf(s.win) == s.buf then
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return
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end
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create_buf()
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local w0 = a.nvim_get_current_win()
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a.nvim_command("new")
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local w = a.nvim_get_current_win()
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a.nvim_win_set_buf(w,s.buf)
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a.nvim_set_current_win(w0)
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s.win = w
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end
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local function dosplit(str, delimiter)
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local result = { }
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local from = 1
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local delim_from, delim_to = string.find( str, delimiter, from )
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while delim_from do
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table.insert( result, string.sub( str, from , delim_from-1 ) )
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from = delim_to + 1
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delim_from, delim_to = string.find( str, delimiter, from )
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end
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table.insert( result, string.sub( str, from ) )
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return result
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end
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local function splitlines(str)
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return vim.split(str, "\n", true)
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end
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local function append_buf(lines, hl)
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if s.buf == nil then
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return
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end
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local l0 = a.nvim_buf_line_count(s.buf)
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if type(lines) == type("") then
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lines = splitlines(lines)
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end
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a.nvim_buf_set_lines(s.buf, l0, l0, true, lines)
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local l1 = a.nvim_buf_line_count(s.buf)
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if hl ~= nil then
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for i = l0, l1-1 do
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a.nvim_buf_add_highlight(s.buf, -1, hl, i, 0, -1)
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end
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end
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local curwin = a.nvim_get_current_win()
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for _,win in ipairs(a.nvim_list_wins()) do
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if a.nvim_win_get_buf(win) == s.buf and win ~= curwin then
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a.nvim_win_set_cursor(win, {l1, 1e9})
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end
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end
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return l0
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end
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local function luadev_print(...)
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local strs = {}
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local args = {...}
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for i = 1,select('#', ...) do
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strs[i] = tostring(args[i])
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end
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append_buf(table.concat(strs, ' '))
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end
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local function dedent(str, leave_indent)
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-- find minimum common indent across lines
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local indent = nil
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for line in str:gmatch('[^\n]+') do
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local line_indent = line:match('^%s+') or ''
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if indent == nil or #line_indent < #indent then
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indent = line_indent
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end
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end
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if indent == nil or #indent == 0 then
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-- no minimum common indent
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return str
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end
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local left_indent = (' '):rep(leave_indent or 0)
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-- create a pattern for the indent
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indent = indent:gsub('%s', '[ \t]')
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-- strip it from the first line
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str = str:gsub('^'..indent, left_indent)
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-- strip it from the remaining lines
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str = str:gsub('[\n]'..indent, '\n' .. left_indent)
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return str
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end
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local function ld_pcall(chunk)
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local coro = coroutine.create(chunk)
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local status, res = coroutine.resume(coro)
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if status then
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return true, res
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else
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_G._errstack = coro
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-- if the only frame on the traceback is the chunk itself, skip the traceback
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if debug.getinfo(coro, 0,"f").func ~= chunk then
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res = debug.traceback(coro, res, 0)
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end
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return false, res
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end
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end
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local function exec(str)
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local chunk, err = loadstring("return \n"..str,"eval")
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if chunk == nil then
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chunk, err = loadstring(str,"exec")
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end
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local inlines = splitlines(dedent(str))
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if inlines[#inlines] == "" then
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inlines[#inlines] = nil
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end
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for i,l in ipairs(inlines) do
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local marker = ((i == 1) and ">") or "."
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inlines[i] = marker.." "..l
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end
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local start = append_buf(inlines)
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for i,_ in ipairs(inlines) do
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a.nvim_buf_add_highlight(s.buf, -1, "Question", start+i-1, 0, 2)
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end
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if chunk == nil then
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append_buf(err,"WarningMsg")
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else
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local oldprint = _G.print
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_G.print = luadev_print
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local st, res = ld_pcall(chunk)
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_G.print = oldprint
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if st == false then
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append_buf(res,"WarningMsg")
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elseif doeval or res ~= nil then
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append_buf(nvimlua_inspect(res))
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end
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end
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append_buf({""})
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end
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local function start()
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open_win()
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end
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local mod = {
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create_buf=create_buf,
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start=start,
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exec=exec,
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print=luadev_print,
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append_buf=append_buf
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}
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-- TODO: export abstraction for autoreload
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if s.mod == nil then
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s.mod = mod
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else
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for k,v in pairs(mod) do
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s.mod[k] = v
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end
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end
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return s.mod
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