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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
if not modules then modules = { } end modules ['cldf-pos'] = {
version = 1.001,
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- https://cse512-19s.github.io/FP-Well-Rounded/
local tostring, load, type, tonumber = tostring, load, type, tonumber
local lpegmatch = lpeg.match
local context = context
local setmetatableindex = table.setmetatableindex
local implement = interfaces.implement
local fromposit = posit.fromposit
local toposit = posit.toposit
local posittonumber = posit.tonumber
local values = tokens.values
local boolean_code = values.boolean
do
local scanners = tokens.scanners
local scanfloat = scanners.float
local scaninteger = scanners.integer
local scancsname = scanners.csname
local codes = tex.codes
local global_code = tex.flagcodes.global
local savelua = token.savelua
----- isdefined = token.isdefined
local newsparse = sparse.new
local setsparse = sparse.set
----- wipesparse = sparse.wipe
local restoresparse = sparse.restore
local registerfunction = context.functions.register
implement {
name = "positunumdef",
public = true,
untraced = true,
protected = true,
actions = function(what)
local name = scancsname(true)
local code = newsparse()
local restore = registerfunction(function() restoresparse(code) end)
implement {
name = name,
public = true,
protected = true,
usage = "value",
actions = function(what)
local n = scaninteger()
if what == "value" then
local v = fromposit(code[n])
-- return float_code, v
context("%.99g",v)
else
local v = toposit(scanfloat())
if what and (tonumber(what) & global_code) then
setsparse(code,"global",n,v)
else
savelua(restore,true) -- only once
setsparse(code,n,v)
end
end
end,
}
codes[name] = code
end,
}
end
do
local p_number = lpeg.patterns.number
local p = lpeg.Cs(
lpeg.Cc("local new = new ; return ")
* (
lpeg.C(p_number) / function(s)
return "new(" .. s .. ")"
end
+ lpeg.P(1)
)^0
)
local t = setmetatableindex({ new = posit.new }, posit)
local function calculate(s)
local new = lpegmatch(p,s)
new = load(new,nil,nil,t)
if new then
new = new()
if new then
return new
end
end
return old
end
implement {
name = "positunum",
public = true,
arguments = "string",
actions = function(s)
local r = calculate(s)
local t = type(r)
if t == "boolean" then
context(tostring(r))
elseif t == "string" then
context(r)
else
context("%N",posittonumber(r))
end
end
}
implement {
name = "ifpositunum",
public = true,
usage = "condition",
arguments = "string",
actions = function(s)
return boolean_code, calculate(s) and true or false
end,
}
end
|
