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interpreter.lua
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interpreter.lua
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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, TBOOX Open Source Group.
--
-- @author ruki
-- @file interpreter.lua
--
-- define module: interpreter
local interpreter = interpreter or {}
-- load modules
local os = require("base/os")
local path = require("base/path")
local table = require("base/table")
local utils = require("base/utils")
local string = require("base/string")
local scopeinfo = require("base/scopeinfo")
local deprecated = require("base/deprecated")
local sandbox = require("sandbox/sandbox")
-- raise without interpreter stack
-- @see https://github.com/xmake-io/xmake/issues/3553
function interpreter._raise(errors)
os.raise("[nobacktrace]: " .. (errors or ""))
end
-- traceback
function interpreter._traceback(errors)
-- disable backtrace?
if errors then
local _, pos = errors:find("[nobacktrace]: ", 1, true)
if pos then
return errors:sub(pos + 1)
end
end
-- init results
local results = ""
if errors then
results = errors .. "\n"
end
results = results .. "stack traceback:\n"
-- make results
local level = 2
while true do
-- get debug info
local info = debug.getinfo(level, "Sln")
-- end?
if not info then
break
end
-- function?
if info.what == "C" then
results = results .. string.format(" [C]: in function '%s'\n", info.name)
elseif info.name then
results = results .. string.format(" [%s:%d]: in function '%s'\n", info.short_src, info.currentline, info.name)
elseif info.what == "main" then
results = results .. string.format(" [%s:%d]: in main chunk\n", info.short_src, info.currentline)
break
else
results = results .. string.format(" [%s:%d]:\n", info.short_src, info.currentline)
end
-- next
level = level + 1
end
return results
end
-- merge the current root values to the previous scope
function interpreter._merge_root_scope(root, root_prev, override)
-- merge it
root_prev = root_prev or {}
for scope_kind_and_name, _ in pairs(root or {}) do
-- only merge sub-scope for each kind("target@@xxxx") or __rootkind
-- we need to ignore the sub-root scope e.g. target{} after fetching root scope
--
if scope_kind_and_name:find("@@", 1, true) or scope_kind_and_name == "__rootkind" then
local scope_values = root_prev[scope_kind_and_name] or {}
local scope_root = root[scope_kind_and_name] or {}
for name, values in pairs(scope_root) do
if not name:startswith("__override_") then
if scope_root["__override_" .. name] then
if override or scope_values[name] == nil then
scope_values[name] = values
end
else
scope_values[name] = table.join(values, scope_values[name] or {})
end
end
end
root_prev[scope_kind_and_name] = scope_values
end
end
-- ok?
return root_prev
end
-- fetch the root values to the child values in root scope
-- and we will only use the child values if be override mode
function interpreter._fetch_root_scope(root)
-- fetch it
for scope_kind_and_name, _ in pairs(root or {}) do
-- is scope_kind@@scope_name?
scope_kind_and_name = scope_kind_and_name:split("@@", {plain = true})
if #scope_kind_and_name == 2 then
local scope_kind = scope_kind_and_name[1]
local scope_name = scope_kind_and_name[2]
local scope_values = root[scope_kind .. "@@" .. scope_name] or {}
local scope_root = root[scope_kind] or {}
for name, values in pairs(scope_root) do
if not name:startswith("__override_") then
if scope_root["__override_" .. name] then
if scope_values[name] == nil then
scope_values[name] = values
scope_values["__override_" .. name] = true
end
else
scope_values[name] = table.join(values, scope_values[name] or {})
end
end
end
root[scope_kind .. "@@" .. scope_name] = scope_values
end
end
end
-- save api source info, e.g. call api() in sourcefile:linenumber
function interpreter:_save_sourceinfo_to_scope(scope, apiname, values)
-- save api source info, e.g. call api() in sourcefile:linenumber
local sourceinfo = debug.getinfo(3, "Sl")
if sourceinfo then
scope["__sourceinfo_" .. apiname] = scope["__sourceinfo_" .. apiname] or {}
local sourcescope = scope["__sourceinfo_" .. apiname]
for _, value in ipairs(values) do
if type(value) == "string" then
sourcescope[value] = {file = sourceinfo.short_src or sourceinfo.source, line = sourceinfo.currentline}
end
end
end
end
-- register scope end: scopename_end()
function interpreter:_api_register_scope_end(...)
assert(self and self._PUBLIC and self._PRIVATE)
-- done
for _, apiname in ipairs({...}) do
-- check
assert(apiname)
-- register scope api
self:api_register(nil, apiname .. "_end", function (self, ...)
-- check
assert(self and self._PRIVATE and apiname)
-- the scopes
local scopes = self._PRIVATE._SCOPES
assert(scopes)
-- enter root scope
scopes._CURRENT = nil
-- clear scope kind
scopes._CURRENT_KIND = nil
end)
end
end
-- register scope api: xxx_apiname()
function interpreter:_api_register_scope_api(scope_kind, action, apifunc, ...)
assert(self and self._PUBLIC and self._PRIVATE)
assert(apifunc)
-- done
for _, apiname in ipairs({...}) do
-- check
assert(apiname)
-- the full name
local fullname = apiname
if action ~= nil then
fullname = action .. "_" .. apiname
end
-- register scope api
self:api_register(scope_kind, fullname, function (self, ...)
-- check
assert(self and self._PRIVATE and apiname)
-- the scopes
local scopes = self._PRIVATE._SCOPES
assert(scopes)
-- call function
return apifunc(self, scopes, apiname, ...)
end)
end
end
-- register api: xxx_values()
function interpreter:_api_register_xxx_values(scope_kind, action, apifunc, ...)
assert(self and self._PUBLIC and self._PRIVATE)
assert(action and apifunc)
-- uses the root scope kind if no scope kind
if not scope_kind then
scope_kind = "__rootkind"
end
-- define implementation
local implementation = function (self, scopes, apiname, ...)
-- init root scopes
scopes._ROOT = scopes._ROOT or {}
-- init current root scope
local root = scopes._ROOT[scope_kind] or {}
scopes._ROOT[scope_kind] = root
-- clear the current scope if be not belong to the current scope kind
if scopes._CURRENT and scopes._CURRENT_KIND ~= scope_kind then
os.raise("%s() cannot be called in %s(), please move it to the %s scope!", apiname, scopes._CURRENT_KIND, scope_kind == "__rootkind" and "root" or scope_kind)
scopes._CURRENT = nil
end
-- the current scope
local scope = scopes._CURRENT or root
assert(scope)
-- set values (set, on, before, after ...)? mark as "override"
if apiname and (action ~= "add" and action ~= "del" and action ~= "remove") then
scope["__override_" .. apiname] = true
end
-- save api source info, e.g. call api() in sourcefile:linenumber
self:_save_sourceinfo_to_scope(scope, apiname, {...})
-- call function
return apifunc(self, scope, apiname, ...)
end
-- register implementation
self:_api_register_scope_api(scope_kind, action, implementation, ...)
end
-- register api for xxx_script
function interpreter:_api_register_xxx_script(scope_kind, action, ...)
-- define implementation
local implementation = function (self, scope, name, ...)
-- patch action to name
if action ~= "on" then
name = name .. "_" .. action
end
-- get arguments, pattern1, pattern2, ..., script function or name
local args = {...}
-- get and save extra config
local extra_config = args[#args]
if table.is_dictionary(extra_config) then
table.remove(args)
scope["__extra_" .. name] = extra_config
end
-- mark as override
scope["__override_" .. name] = true
-- get patterns
local patterns = {}
if #args > 1 then
patterns = table.slice(args, 1, #args - 1)
end
-- get script function or name
local script_func_or_name = args[#args]
-- get script
local script, errors = self:_script(script_func_or_name)
if not script then
if #patterns > 0 then
os.raise("%s_%s(%s, %s): %s", action, name, table.concat(patterns, ', '), tostring(script_func_or_name), errors)
else
os.raise("%s_%s(%s): %s", action, name, tostring(script_func_or_name), errors)
end
end
-- save script for all patterns
if #patterns > 0 then
local scripts = scope[name] or {}
for _, pattern in ipairs(patterns) do
-- check
assert(type(pattern) == "string")
-- convert pattern to a lua pattern ('*' => '.*')
pattern = pattern:gsub("([%+%.%-%^%$%%])", "%%%1")
pattern = pattern:gsub("%*", "\001")
pattern = pattern:gsub("\001", ".*")
-- save script
if type(scripts) == "table" then
scripts[pattern] = script
elseif type(scripts) == "function" then
scripts = {__generic__ = scripts}
scripts[pattern] = script
end
end
scope[name] = scripts
else
-- save the generic script
local scripts = scope[name]
if type(scripts) == "table" then
scripts["__generic__"] = script
else
scripts = script
end
scope[name] = scripts
end
end
-- register implementation
self:_api_register_xxx_values(scope_kind, action, implementation, ...)
end
-- translate api paths
function interpreter:_api_translate_paths(values, apiname, infolevel)
local results = {}
for _, p in ipairs(values) do
if type(p) ~= "string" or #p == 0 then
local sourceinfo = debug.getinfo(infolevel or 3, "Sl")
interpreter._raise(string.format("%s(%s): invalid path value at %s:%d", apiname, tostring(p),
sourceinfo.short_src or sourceinfo.source, sourceinfo.currentline))
end
if not p:find("^%s-%$%(.-%)") and not path.is_absolute(p) then
table.insert(results, path.relative(path.absolute(p, self:scriptdir()), self:rootdir()))
else
table.insert(results, p)
end
end
return results
end
-- get api function within scope
function interpreter:_api_within_scope(scope_kind, apiname)
local priv = self._PRIVATE
assert(priv)
-- the scopes
local scopes = priv._SCOPES
assert(scopes)
-- get scope api
if scope_kind and priv._APIS then
-- get api function
local api_scope = priv._APIS[scope_kind]
if api_scope then
return api_scope[apiname]
end
end
end
-- set api function within scope
function interpreter:_api_within_scope_set(scope_kind, apiname, apifunc)
local priv = self._PRIVATE
assert(priv)
-- the scopes
local scopes = priv._SCOPES
assert(scopes)
-- get scope api
if scope_kind and priv._APIS then
-- get api function
local api_scope = priv._APIS[scope_kind]
if api_scope then
api_scope[apiname] = apifunc
end
end
end
-- clear results
function interpreter:_clear()
assert(self and self._PRIVATE)
-- clear it
self._PRIVATE._SCOPES = {}
self._PRIVATE._MTIMES = {}
end
-- filter values
function interpreter:_filter(values, level)
assert(self and values ~= nil)
-- return values directly if no filter
local filter = self._PRIVATE._FILTER
if filter == nil then
return values
end
-- init level
if level == nil then
level = 0
end
-- filter keyvalues
if table.is_dictionary(values) then
local results = {}
for key, value in pairs(values) do
key = (type(key) == "string" and filter:handle(key) or key)
if type(value) == "string" then
results[key] = filter:handle(value)
elseif type(value) == "table" and level < 1 then
results[key] = self:_filter(value, level + 1) -- only filter 2 levels for table values
else
results[key] = value
end
values = results
end
else
-- filter value or arrays
values = table.wrap(values)
for idx = 1, #values do
local value = values[idx]
if type(value) == "string" then
value = filter:handle(value)
elseif table.is_array(value) then
for i = 1, #value do
local v = value[i]
if type(v) == "string" then
v = filter:handle(v)
elseif type(v) == "table" and level < 1 then
v = self:_filter(v, level + 1)
end
value[i] = v
end
end
values[idx] = value
end
end
return values
end
-- handle scope data
function interpreter:_handle(scope, deduplicate, enable_filter)
assert(scope)
-- remove repeat values and unwrap it
local results = {}
for name, values in pairs(scope) do
-- filter values
--
-- @note we need to do filter before removing repeat values
-- https://github.com/xmake-io/xmake/issues/1732
if enable_filter then
values = self:_filter(values)
end
-- remove repeat first for each slice with removed item (__remove_xxx)
if deduplicate and not table.is_dictionary(values) then
local policy = self:deduplication_policy(name)
if policy ~= false then
local unique_func = policy == "toleft" and table.reverse_unique or table.unique
values = unique_func(values, function (v) return type(v) == "string" and v:startswith("__remove_") end)
end
end
-- unwrap it if be only one
values = table.unwrap(values)
-- update it
results[name] = values
end
return results
end
-- make results
function interpreter:_make(scope_kind, deduplicate, enable_filter)
assert(self and self._PRIVATE)
-- the scopes
local scopes = self._PRIVATE._SCOPES
-- empty scope?
if not scopes or not scopes._ROOT then
os.raise("the scope %s() is empty!", scope_kind)
end
-- get the root scope info of the given scope kind, e.g. root.target
local results = {}
local scope_opt = {interpreter = self, deduplicate = deduplicate, enable_filter = enable_filter}
if scope_kind and scope_kind:startswith("root.") then
local root_scope = scopes._ROOT[scope_kind:sub(6)]
if root_scope then
results = self:_handle(root_scope, deduplicate, enable_filter)
end
return scopeinfo.new(scope_kind, results, scope_opt)
-- get the root scope info without scope kind
elseif scope_kind == "root" or scope_kind == nil then
local root_scope = scopes._ROOT["__rootkind"]
if root_scope then
results = self:_handle(root_scope, deduplicate, enable_filter)
end
return scopeinfo.new(scope_kind, results, scope_opt)
-- get the results of the given scope kind
elseif scope_kind then
-- not this scope for kind?
local scope_for_kind = scopes[scope_kind]
if scope_for_kind then
-- fetch the root values in root scope first
interpreter._fetch_root_scope(scopes._ROOT)
-- merge results
for scope_name, scope in pairs(scope_for_kind) do
-- add scope values
local scope_values = {}
for name, values in pairs(scope) do
if not name:startswith("__override_") then
scope_values[name] = values
end
end
-- merge root values with the given scope name
local scope_root = scopes._ROOT[scope_kind .. "@@" .. scope_name]
if scope_root then
for name, values in pairs(scope_root) do
if not scope["__override_" .. name] then
scope_values[name] = table.join(values, scope_values[name] or {})
end
end
end
-- add this scope
results[scope_name] = scopeinfo.new(scope_kind, self:_handle(scope_values, deduplicate, enable_filter), scope_opt)
end
end
end
return results
end
-- load script
function interpreter:_script(script)
-- this script is module name? import it first
if type(script) == "string" then
-- import module as script
local modulename = script
script = function (...)
-- import it
_g._module = _g._module or import(modulename, {anonymous = true})
return _g._module(...)
end
end
-- make sandbox instance with the given script
local instance, errors = sandbox.new(script, self:filter(), self:scriptdir())
if not instance then
return nil, errors
end
-- get sandbox script
return instance:script()
end
-- get builtin modules
function interpreter.builtin_modules()
local builtin_modules = interpreter._BUILTIN_MODULES
if builtin_modules == nil then
builtin_modules = {}
local builtin_module_files = os.match(path.join(os.programdir(), "core/sandbox/modules/interpreter/*.lua"))
if builtin_module_files then
for _, builtin_module_file in ipairs(builtin_module_files) do
local module_name = path.basename(builtin_module_file)
assert(module_name)
local script, errors = loadfile(builtin_module_file)
if script then
local ok, results = utils.trycall(script)
if not ok then
os.raise(results)
end
builtin_modules[module_name] = results
else
os.raise(errors)
end
end
end
interpreter._BUILTIN_MODULES = builtin_modules
end
return builtin_modules
end
-- new an interpreter instance
function interpreter.new()
-- init an interpreter instance
local instance = { _PUBLIC = {}
, _PRIVATE = { _SCOPES = {}
, _MTIMES = {}
, _SCRIPT_FILES = {}
, _FILTER = require("base/filter").new()}}
-- inherit the interfaces of interpreter
table.inherit2(instance, interpreter)
-- dispatch the api calling for scope
setmetatable(instance._PUBLIC, { __index = function (tbl, key)
-- get interpreter instance
if type(key) == "string" and key == "_INTERPRETER" and rawget(tbl, "_INTERPRETER_READABLE") then
return instance
end
-- get the scope kind
local priv = instance._PRIVATE
local current_kind = priv._SCOPES._CURRENT_KIND
local scope_kind = current_kind or priv._ROOTSCOPE
-- get the api function from the given scope
local apifunc = instance:_api_within_scope(scope_kind, key)
-- get the api function from the root scope
if not apifunc and priv._ROOTAPIS then
apifunc = priv._ROOTAPIS[key]
end
-- ok?
return apifunc
end
, __newindex = function (tbl, key, val)
if type(key) == "string" and (key == "_INTERPRETER" or key == "_INTERPRETER_READABLE") then
return
end
rawset(tbl, key, val)
end})
-- register the builtin interfaces
instance:api_register(nil, "includes", interpreter.api_builtin_includes)
instance:api_register(nil, "add_subdirs", interpreter.api_builtin_add_subdirs)
instance:api_register(nil, "add_subfiles", interpreter.api_builtin_add_subfiles)
instance:api_register(nil, "set_xmakever", interpreter.api_builtin_set_xmakever)
-- register the interpreter interfaces
instance:api_register(nil, "interp_save_scope", interpreter.api_interp_save_scope)
instance:api_register(nil, "interp_restore_scope", interpreter.api_interp_restore_scope)
instance:api_register(nil, "interp_get_scopekind", interpreter.api_interp_get_scopekind)
instance:api_register(nil, "interp_get_scopename", interpreter.api_interp_get_scopename)
instance:api_register(nil, "interp_add_scopeapis", interpreter.api_interp_add_scopeapis)
-- register the builtin modules
for module_name, module in pairs(interpreter.builtin_modules()) do
instance:api_register_builtin(module_name, module)
end
-- ok?
return instance
end
-- load script file, e.g. xmake.lua
--
-- @param opt {on_load_data = function (data) return data end}
--
function interpreter:load(file, opt)
assert(self and self._PUBLIC and self._PRIVATE and file)
-- load the script
opt = opt or {}
local script, errors = loadfile(file, "bt", {on_load = opt.on_load_data})
if not script then
return nil, errors
end
-- clear first
self:_clear()
-- translate to absolute file path for scriptdir/rootdir
file = path.absolute(file)
-- init the current file
self._PRIVATE._CURFILE = file
self._PRIVATE._SCRIPT_FILES = {file}
-- init the root directory
self._PRIVATE._ROOTDIR = path.directory(file)
assert(self._PRIVATE._ROOTDIR)
-- init mtime for the current file
self._PRIVATE._MTIMES[path.relative(file, self._PRIVATE._ROOTDIR)] = os.mtime(file)
-- bind public scope
setfenv(script, self._PUBLIC)
-- do interpreter
return xpcall(script, interpreter._traceback)
end
-- make results
function interpreter:make(scope_kind, deduplicate, enable_filter)
-- get the results with the given scope
self._PENDING = true
local ok, results = xpcall(interpreter._make, interpreter._traceback, self, scope_kind, deduplicate, enable_filter)
self._PENDING = false
if not ok then
return nil, results
end
return results
end
-- is pending?
function interpreter:pending()
return self._PENDING
end
-- get all loaded script files (xmake.lua)
function interpreter:scriptfiles()
assert(self and self._PRIVATE)
return self._PRIVATE._SCRIPT_FILES
end
-- get mtimes
function interpreter:mtimes()
assert(self and self._PRIVATE)
return self._PRIVATE._MTIMES
end
-- get filter
function interpreter:filter()
assert(self and self._PRIVATE)
return self._PRIVATE._FILTER
end
-- get root directory
function interpreter:rootdir()
assert(self and self._PRIVATE)
return self._PRIVATE._ROOTDIR
end
-- set root directory
function interpreter:rootdir_set(rootdir)
assert(self and self._PRIVATE and rootdir)
self._PRIVATE._ROOTDIR = rootdir
end
-- get script directory
function interpreter:scriptdir()
assert(self and self._PRIVATE and self._PRIVATE._CURFILE)
return path.directory(self._PRIVATE._CURFILE)
end
-- set root scope kind
--
-- the root api will affect these scopes
--
function interpreter:rootscope_set(scope_kind)
assert(self and self._PRIVATE)
self._PRIVATE._ROOTSCOPE = scope_kind
end
-- get the deduplication policy
function interpreter:deduplication_policy(name)
local policies = self._PRIVATE._DEDUPLICATION_POLICIES
if name then
return policies and policies[name]
else
return policies
end
end
-- set the deduplication policy
--
-- we need to be able to precisely control the direction of deduplication of different types of values.
-- the default is to de-duplicate from left to right, but like links/syslinks need to be de-duplicated from right to left.
--
-- e.g
--
-- interp:deduplication_set("defines", "right") -- remove duplicates to the right (default)
-- interp:deduplication_set("links", "left") -- remove duplicates to the left
-- interp:deduplication_set("links", false) -- disable deduplication
--
-- @see https://github.com/xmake-io/xmake/issues/1903
--
function interpreter:deduplication_policy_set(name, policy)
self._PRIVATE._DEDUPLICATION_POLICIES = self._PRIVATE._DEDUPLICATION_POLICIES or {}
self._PRIVATE._DEDUPLICATION_POLICIES[name] = policy
end
-- get apis
function interpreter:apis(scope_kind)
assert(self and self._PRIVATE)
-- get apis from the given scope kind
if scope_kind and scope_kind ~= "__rootkind" then
local apis = self._PRIVATE._APIS
return apis and apis[scope_kind] or {}
else
return self._PRIVATE._ROOTAPIS or {}
end
end
-- get api definitions
function interpreter:api_definitions()
return self._API_DEFINITIONS
end
-- register api
--
-- interp:api_register(nil, "apiroot", function () end)
-- interp:api_register("scope_kind", "apiname", function () end)
--
-- result:
--
-- _PRIVATE
-- {
-- _APIS
-- {
-- scope_kind
-- {
-- apiname = function () end
-- }
-- }
--
-- _ROOTAPIS
-- {
-- apiroot = function () end
-- }
-- }
--
function interpreter:api_register(scope_kind, name, func)
assert(self and self._PUBLIC and self._PRIVATE)
assert(name and func)
-- register api to the given scope kind
if scope_kind and scope_kind ~= "__rootkind" then
-- get apis
self._PRIVATE._APIS = self._PRIVATE._APIS or {}
local apis = self._PRIVATE._APIS
-- get scope
apis[scope_kind] = apis[scope_kind] or {}
local scope = apis[scope_kind]
-- register api
scope[name] = function (...)
return func(self, ...)
end
else
-- get root apis
self._PRIVATE._ROOTAPIS = self._PRIVATE._ROOTAPIS or {}
local apis = self._PRIVATE._ROOTAPIS
-- register api to the root scope
apis[name] = function (...)
return func(self, ...)
end
end
end
-- register api for builtin
function interpreter:api_register_builtin(name, func)
assert(self and self._PUBLIC and func)
self._PUBLIC[name] = func
end
-- register api for scope()
--
-- interp:api_register_scope("scope_kind1", "scope_kind2")
--
-- api:
-- set_$(scope_kind1)("scope_name1")
-- ...
--
-- set_$(scope_kind2)("scope_name1", "scope_name2")
-- ...
--
-- result:
--
-- _PRIVATE
-- {
-- _SCOPES
-- {
-- scope_kind1
-- {
-- "scope_name1"
-- {
--
-- }
-- }
--
-- scope_kind2
-- {
-- "scope_name1"
-- {
--
-- }
--
-- "scope_name2" <-- _SCOPES._CURRENT
-- {
-- __scriptdir = "" (the directory of xmake.lua)
-- }
-- }
-- }
-- }
--
function interpreter:api_register_scope(...)
-- define implementation
local implementation = function (self, scopes, scope_kind, ...)
local scope_args = table.pack(...)
local scope_name = scope_args[1]
local scope_info = scope_args[2]
-- check invalid scope name, @see https://github.com/xmake-io/xmake/issues/4547
if scope_args.n > 0 and type(scope_name) ~= "string" then
local errors = string.format("%s(%s): invalid %s name", scope_kind, scope_name, scope_kind)
local sourceinfo = debug.getinfo(2, "Sl")
if sourceinfo then
errors = string.format("%s:%s: %s", sourceinfo.short_src or sourceinfo.source, sourceinfo.currentline, errors)
end
interpreter._raise(errors)
end
-- init scope for kind
local scope_for_kind = scopes[scope_kind] or {}
scopes[scope_kind] = scope_for_kind
-- enter the given scope
if scope_name ~= nil then
-- init scope for name
local scope = scope_for_kind[scope_name] or {}
scope_for_kind[scope_name] = scope
-- save the current scope
scopes._CURRENT = scope
-- save script directory of scope when enter this scope first
scope.__scriptdir = scope.__scriptdir or self:scriptdir()
else
-- enter root scope
scopes._CURRENT = nil
end
-- update the current scope kind
scopes._CURRENT_KIND = scope_kind
-- init scope_kind.scope_name for the current root scope
scopes._ROOT = scopes._ROOT or {}
if scope_name ~= nil then
scopes._ROOT[scope_kind .. "@@" .. scope_name] = {}
end
-- with scope info? translate it
--
-- e.g.
-- option("text", {showmenu = true, default = true, description = "test option"})