minecraft-text-notation-lua/common.lua at main · monkeysHK/minecraft-text-notation-lua · GitHub

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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
local common = { Position = {}, Problem = {}, ParseAccept = {}, ParseReject = {}, ParseFail = {} }


function common.Position.new(index, line, col)
   local self = setmetatable({}, { __index = common.Position })
   self.index = index
   self.line = line
   self.col = col
   return self
end

function common.Position:advance(offset)
   return common.Position.new(self.index + offset, self.line, self.col + offset)
end

function common.Position:toGlobalPosition(parentPosition)
   local index = parentPosition.index + self.index - 1
   local line = parentPosition.line + self.line - 1
   local onSameLine = self.line == 1
   local col = onSameLine and (parentPosition.col + self.col - 1) or self.col
   return common.Position.new(index, line, col)
end

function common.Problem.new(message, position)
   local self = setmetatable({}, { __index = common.Problem })
   self.message = message
   self.position = position
   return self
end

function common.ParseAccept.new(result, nextIndex, warnings, strictProblems)
   local self = setmetatable({}, { __index = common.ParseAccept })
   self.kind = "ParseAccept"
   self.result = result
   self.nextIndex = nextIndex
   self.warnings = warnings
   self.strictProblems = strictProblems
   return self
end

function common.ParseReject.new()
   local self = setmetatable({}, { __index = common.ParseReject })
   self.kind = "ParseReject"
   return self
end

function common.ParseFail.new(failure)
   local self = setmetatable({}, { __index = common.ParseFail })
   self.kind = "ParseFail"
   self.failure = failure
   return self
end

return common