01Scoper = {}
02
03Scoper.get_scope = function(optional_locals_scope = null)
04	scope = {}
05
06	scope.map = map
07	scope.list = list
08	scope.number = number
09	scope.string = string
10	scope.globals = globals
11	if optional_locals_scope == null then
12		scope.locals = {}
13	else 
14		scope.locals = optional_locals_scope
15	end if
16	
17	return scope
18end function
19
20Scoper.shallow_copy = function(obj1, obj2)
21	for i in obj2.indexes
22		obj1[@i] = @obj2[@i]
23	end for
24end function
25
26Scoper.transfer_scope = function(scope)
27	self.shallow_copy(map, scope.map)
28	self.shallow_copy(list, scope.list)
29	self.shallow_copy(number, scope.number)
30	self.shallow_copy(string, scope.string)
31	self.shallow_copy(globals, scope.globals)
32end function
33
34
35Meta = {}
36Meta.shell = get_shell
37Meta.computer = Meta.shell.host_computer
38// PREPEND_MARK
39Meta.prepend_code = Meta.computer.File("/home/me/projects/igs/boilerplates/prepend.src").get_content
40// APPEND_MARK
41Meta.append_code = Meta.computer.File("/home/me/projects/igs/boilerplates/append.src").get_content
42
43// required options:
44// build_full_path, example /home/me/evals/evalscript.src
45Meta.init = function(build_full_path = "/home/guest/evalscript.src")
46	self.build_full_path = build_full_path
47	self.build_path = self.build_full_path.split("/")[0:-1].join("/")
48	self.build_name = self.build_full_path.split("/")[-1]
49	self.build_bin_name = self.build_name.split(".")[0]
50	self.build_bin_full_path = self.build_path + "/" + self.build_bin_name
51end function
52
53Meta.eval = function(code, optional_locals_scope = null)
54	eval_script_code = self.prepend_code + char(10) + code + char(10) + self.append_code
55	
56	self.computer.touch(self.build_path, self.build_name)
57	eval_script = self.computer.File(self.build_full_path)
58
59	eval_script.set_content(eval_script_code)
60	compiler_out = get_shell.build(self.build_full_path, self.build_path)
61	if compiler_out then
62		print compiler_out
63		return
64	end if
65	
66	get_custom_object.parent_scope = Scoper.get_scope(optional_locals_scope)
67	get_shell.launch(self.build_bin_full_path)
68	if get_custom_object.hasIndex("child_scope") then Scoper.transfer_scope(get_custom_object.child_scope)
69end function
70
71Meta.console = function(optional_locals_scope = null)
72	prompt_code = function(line = 0)
73		code = user_input("igs("+line+")> ")
74		if code == "continue" then return 0
75		if code.len > 0 and code.values[-1] == char(92) then
76			return code[0:-1] + char(10) + prompt_code(line + 1) 
77		end if
78		return code
79	end function
80
81	while true
82		arbitrary_code = prompt_code
83		if not arbitrary_code then return
84		
85		self.eval(arbitrary_code, optional_locals_scope)
86	end while
87end function