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local debug_getinfo = debug.getinfo
local ok, to_lua = pcall(function()
return require('moonscript.base').to_lua
end)
if not ok then
to_lua = nil
end
local moonscript_line_tables = setmetatable({ }, {
__index = function(self, filename)
if not (to_lua) then
return nil
end
local _, line_table = to_lua(FILE_CACHE[filename])
self[filename] = line_table
return line_table
end
})
debug.getinfo = function(thread, f, what)
if what == nil then
f, what, thread = thread, f, nil
end
if type(f) == 'number' then
f = f + 1
end
local info
if thread == nil then
info = debug_getinfo(f, what)
else
info = debug_getinfo(thread, f, what)
end
if not info or not info.func then
return info
end
if info.short_src or info.source or info.linedefine or info.currentline then
do
local map = SOURCE_MAP[info.source]
if map then
if info.currentline then
info.currentline = assert(map[info.currentline])
end
if info.linedefined then
info.linedefined = assert(map[info.linedefined])
end
if info.lastlinedefined then
info.lastlinedefined = assert(map[info.lastlinedefined])
end
info.short_src = info.source:match('@([^[]*)') or info.short_src
end
end
end
return info
end
local print_err_msg
print_err_msg = function(error_message, stack_offset)
if stack_offset == nil then
stack_offset = 3
end
io.stderr:write(tostring(colored.red("ERROR:")) .. " " .. tostring(colored.bright(colored.red((error_message or "")))) .. "\n")
io.stderr:write("stack traceback:\n")
ok, to_lua = pcall(function()
return require('moonscript.base').to_lua
end)
if not ok then
to_lua = function()
return nil
end
end
local LINE_TABLES = setmetatable({ }, {
__index = function(self, file)
local _, line_table = to_lua(file)
self[file] = line_table or false
return line_table or false
end
})
local get_line
get_line = function(file, line_no)
local start = LINE_STARTS[file][line_no] or 1
local stop = (LINE_STARTS[file][line_no + 1] or 0) - 1
return file:sub(start, stop)
end
local level = stack_offset
while true do
local _continue_0 = false
repeat
local calling_fn = debug_getinfo(level)
if not calling_fn then
break
end
if calling_fn.func == run then
break
end
level = level + 1
local name = calling_fn.name and "function '" .. tostring(calling_fn.name) .. "'" or nil
if calling_fn.linedefined == 0 then
name = "main chunk"
end
if name == "run_lua_fn" then
_continue_0 = true
break
end
local line = nil
do
local map = SOURCE_MAP[calling_fn.source]
if map then
if calling_fn.currentline then
calling_fn.currentline = assert(map[calling_fn.currentline])
end
if calling_fn.linedefined then
calling_fn.linedefined = assert(map[calling_fn.linedefined])
end
if calling_fn.lastlinedefined then
calling_fn.lastlinedefined = assert(map[calling_fn.lastlinedefined])
end
local filename, start, stop = calling_fn.source:match('@([^[]*)%[([0-9]+):([0-9]+)]')
assert(filename)
local file = FILE_CACHE[filename]:sub(tonumber(start), tonumber(stop))
local err_line = get_line(file, calling_fn.currentline):sub(1, -2)
local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)")))
name = "action '" .. tostring(calling_fn.name) .. "'"
line = colored.yellow(tostring(filename) .. ":" .. tostring(calling_fn.currentline) .. " in " .. tostring(name) .. "\n " .. tostring(offending_statement))
else
local file
ok, file = pcall(function()
return FILE_CACHE[calling_fn.short_src]
end)
if not ok then
file = nil
end
local line_num
if name == nil then
local search_level = level
local _info = debug.getinfo(search_level)
while _info and (_info.func == pcall or _info.func == xpcall) do
search_level = search_level + 1
_info = debug.getinfo(search_level)
end
if _info then
for i = 1, 999 do
local varname, val = debug.getlocal(search_level, i)
if not varname then
break
end
if val == calling_fn.func then
name = "local '" .. tostring(varname) .. "'"
if not varname:match("%(") then
break
end
end
end
if not (name) then
for i = 1, _info.nups do
local varname, val = debug.getupvalue(_info.func, i)
if not varname then
break
end
if val == calling_fn.func then
name = "upvalue '" .. tostring(varname) .. "'"
if not varname:match("%(") then
break
end
end
end
end
end
end
if file and calling_fn.short_src:match(".moon$") and LINE_TABLES[file] then
local char = LINE_TABLES[file][calling_fn.currentline]
line_num = 1
for _ in file:sub(1, char):gmatch("\n") do
line_num = line_num + 1
end
line = colored.cyan(tostring(calling_fn.short_src) .. ":" .. tostring(line_num) .. " in " .. tostring(name or '?'))
else
line_num = calling_fn.currentline
if calling_fn.short_src == '[C]' then
line = colored.green(tostring(calling_fn.short_src) .. " in " .. tostring(name or '?'))
else
line = colored.blue(tostring(calling_fn.short_src) .. ":" .. tostring(calling_fn.currentline) .. " in " .. tostring(name or '?'))
end
end
if file then
local err_line = get_line(file, line_num):sub(1, -2)
local offending_statement = colored.bright(colored.red(err_line:match("^[ ]*(.*)$")))
line = line .. ("\n " .. offending_statement)
end
end
end
io.stderr:write(" " .. tostring(line) .. "\n")
if calling_fn.istailcall then
io.stderr:write(" " .. tostring(colored.dim(colored.white(" (...tail calls...)"))) .. "\n")
end
_continue_0 = true
until true
if not _continue_0 then
break
end
end
return io.stderr:flush()
end
local err_hand
err_hand = function(error_message)
print_err_msg(error_message)
return os.exit(false, true)
end
local has_ldt, ldt = pcall(require, 'ldt')
local safe_run
if has_ldt then
safe_run = ldt.guard
else
safe_run = function(fn)
return xpcall(fn, err_hand)
end
end
return safe_run
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