6915746301

Committed 18 Nov 2023 07:02PM UTC coverage: 56.433% (-12.3%) from 68.751%

Build # 6915746301

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github

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web-flow

Commit Message

Merge 8b3fdc301 into f64e235fa

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87.04

/core/parserbits.lua

local lpeg = require("lpeg")

local R, S, P, B = lpeg.R, lpeg.S, lpeg.P, lpeg.B
local C, Cf, Cg, Ct, Cmt = lpeg.C, lpeg.Cf, lpeg.Cg, lpeg.Ct, lpeg.Cmt

local function isaunit (_, _, unit)
  -- TODO: fix race condition so we can validate units
  if not SILE or not SILE.units then return true end
  return SILE.units[unit] and true or false
end

local function inferpoints (number)
  return { amount = number, unit = "pt" }
end

local function unwrapper (...)
  local tbl = {...}
  return tbl[1], tbl[#tbl]
end

-- UTF-8 characters
-- decode a two-byte UTF-8 sequence
local function f2 (s)
  local c1, c2 = string.byte(s, 1, 2)
  return c1 * 64 + c2 - 12416
end
-- decode a three-byte UTF-8 sequence
local function f3 (s)
  local c1, c2, c3 = string.byte(s, 1, 3)
  return (c1 * 64 + c2) * 64 + c3 - 925824
end
-- decode a four-byte UTF-8 sequence
local function f4 (s)
  local c1, c2, c3, c4 = string.byte(s, 1, 4)
  return ((c1 * 64 + c2) * 64 + c3) * 64 + c4 - 63447168
end
local cont = lpeg.R("\128\191")   -- continuation byte
local utf8char = lpeg.R("\0\127") / string.byte
  + lpeg.R("\194\223") * cont / f2
  + lpeg.R("\224\239") * cont * cont / f3
  + lpeg.R("\240\244") * cont * cont * cont / f4

local bits = {}

bits.digit = R"09"
bits.ws = S" \r\n\t\f\v"^0
bits.letter = R("az", "AZ") + P"_"
bits.identifier = (bits.letter + bits.digit)^1
local sign = S"+-"^-1
bits.integer = sign * bits.digit^1
local sep = P"."
bits.decimal = sign * (bits.digit^0 * sep)^-1 * bits.digit^1
bits.scientific = bits.decimal * S"Ee" * bits.integer
bits.number = (bits.scientific + bits.decimal) / tonumber
local unit = Cmt(P"%"^-1 * R("az")^-4, isaunit)
bits.measurement = Ct(Cg(bits.number, "amount") * bits.ws * Cg(unit, "unit"))
local amount = bits.measurement + bits.number / inferpoints
local length = Cg(amount, "length")
local stretch = bits.ws * P"plus" * bits.ws * Cg(amount, "stretch")
local shrink = bits.ws * P"minus" * bits.ws * Cg(amount, "shrink")
bits.length = Ct(length * stretch^-1 * shrink^-1)
bits.utf8char = utf8char

local pairsep = S",;" * bits.ws
local quote = P'"'
local escaped_quote = B(P"\\") * quote
local unescapeQuote = function (str) local a = str:gsub('\\"', '"'); return a end
local quotedString = quote * C((1 - quote + escaped_quote)^1 / unescapeQuote) * quote
local value = quotedString + (1-S",;]")^1
local ID = C(bits.letter * (bits.letter + bits.digit)^0)
bits.silidentifier = (ID + S":-")^1
local pair = Cg(C(bits.silidentifier) * bits.ws * "=" * bits.ws * C(value)) * pairsep^-1 / unwrapper
bits.parameters = Cf(Ct"" * pair^0, rawset)

local wrapper = function (a) return type(a)=="table" and a or {} end
local useparams = (P"[" * bits.parameters * P"]")^-1 / wrapper
local modpart = C((1 - P"." - P"/" - P"[")^1)
local module = C(modpart * (P"." * modpart)^0)
bits.cliuse = Ct(Cg(module, "module") * Cg(useparams^-1, "options"))

return bits

1	local lpeg = require("lpeg")	34✔
2
3	local R, S, P, B = lpeg.R, lpeg.S, lpeg.P, lpeg.B	34✔
4	local C, Cf, Cg, Ct, Cmt = lpeg.C, lpeg.Cf, lpeg.Cg, lpeg.Ct, lpeg.Cmt	34✔
5
6	local function isaunit (_, _, unit)
7	-- TODO: fix race condition so we can validate units
8	if not SILE or not SILE.units then return true end	10,100✔
9	return SILE.units[unit] and true or false	9,794✔
10	end
11
12	local function inferpoints (number)
13	return { amount = number, unit = "pt" }	×
14	end
15
16	local function unwrapper (...)
17	local tbl = {...}	64✔
18	return tbl[1], tbl[#tbl]	64✔
19	end
20
21	-- UTF-8 characters
22	-- decode a two-byte UTF-8 sequence
23	local function f2 (s)
24	local c1, c2 = string.byte(s, 1, 2)	×
25	return c1 * 64 + c2 - 12416	×
26	end
27	-- decode a three-byte UTF-8 sequence
28	local function f3 (s)
29	local c1, c2, c3 = string.byte(s, 1, 3)	×
30	return (c1 * 64 + c2) * 64 + c3 - 925824	×
31	end
32	-- decode a four-byte UTF-8 sequence
33	local function f4 (s)
34	local c1, c2, c3, c4 = string.byte(s, 1, 4)	×
35	return ((c1 * 64 + c2) * 64 + c3) * 64 + c4 - 63447168	×
36	end
37	local cont = lpeg.R("\128\191") -- continuation byte	34✔
38	local utf8char = lpeg.R("\0\127") / string.byte	34✔
39	+ lpeg.R("\194\223") * cont / f2	34✔
40	+ lpeg.R("\224\239") * cont * cont / f3	34✔
41	+ lpeg.R("\240\244") * cont * cont * cont / f4	34✔
42
43	local bits = {}	34✔
44
45	bits.digit = R"09"	34✔
46	bits.ws = S" \r\n\t\f\v"^0	34✔
47	bits.letter = R("az", "AZ") + P"_"	34✔
48	bits.identifier = (bits.letter + bits.digit)^1	34✔
49	local sign = S"+-"^-1	34✔
50	bits.integer = sign * bits.digit^1	34✔
51	local sep = P"."	34✔
52	bits.decimal = sign * (bits.digit^0 * sep)^-1 * bits.digit^1	34✔
53	bits.scientific = bits.decimal * S"Ee" * bits.integer	34✔
54	bits.number = (bits.scientific + bits.decimal) / tonumber	34✔
55	local unit = Cmt(P"%"^-1 * R("az")^-4, isaunit)	34✔
56	bits.measurement = Ct(Cg(bits.number, "amount") * bits.ws * Cg(unit, "unit"))	34✔
57	local amount = bits.measurement + bits.number / inferpoints	34✔
58	local length = Cg(amount, "length")	34✔
59	local stretch = bits.ws * P"plus" * bits.ws * Cg(amount, "stretch")	34✔
60	local shrink = bits.ws * P"minus" * bits.ws * Cg(amount, "shrink")	34✔
61	bits.length = Ct(length * stretch^-1 * shrink^-1)	34✔
62	bits.utf8char = utf8char	34✔
63
64	local pairsep = S",;" * bits.ws	34✔
65	local quote = P'"'	34✔
66	local escaped_quote = B(P"\\") * quote	34✔
67	local unescapeQuote = function (str) local a = str:gsub('\\"', '"'); return a end	34✔
68	local quotedString = quote * C((1 - quote + escaped_quote)^1 / unescapeQuote) * quote	34✔
69	local value = quotedString + (1-S",;]")^1	34✔
70	local ID = C(bits.letter * (bits.letter + bits.digit)^0)	34✔
71	bits.silidentifier = (ID + S":-")^1	34✔
72	local pair = Cg(C(bits.silidentifier) * bits.ws * "=" * bits.ws * C(value)) * pairsep^-1 / unwrapper	34✔
73	bits.parameters = Cf(Ct"" * pair^0, rawset)	34✔
74
75	local wrapper = function (a) return type(a)=="table" and a or {} end	34✔
76	local useparams = (P"[" * bits.parameters * P"]")^-1 / wrapper	34✔
77	local modpart = C((1 - P"." - P"/" - P"[")^1)	34✔
78	local module = C(modpart * (P"." * modpart)^0)	34✔
79	bits.cliuse = Ct(Cg(module, "module") * Cg(useparams^-1, "options"))	34✔
80
81	return bits	34✔

sile-typesetter / sile / 6915746301

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