blob: 538e75868aa4cdb7d97af2822f1512ca00f6a319 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
local localMgr = require 'vm.local-manager'
---@class vm.node.union
local mt = {}
mt.__index = mt
mt.type = 'union'
---@param node vm.node
function mt:merge(node)
if not node then
return
end
if node.type == 'union' then
for _, c in ipairs(node) do
if not self[c] then
self[c] = true
self[#self+1] = c
end
end
else
if not self[node] then
self[node] = true
self[#self+1] = node
end
end
end
---@param source parser.object
function mt:subscribeLocal(source)
for _, c in ipairs(self) do
localMgr.subscribeLocal(source, c)
if c.type == 'cross' then
c:subscribeLocal(source)
end
end
end
function mt:eachNode()
local i = 0
return function ()
i = i + 1
return self[i]
end
end
---@param me parser.object
---@param node vm.node
---@return vm.node.union
return function (me, node)
local union = setmetatable({
[1] = me,
[me] = true,
}, mt)
union:merge(node)
return union
end
|