mirror of
https://github.com/Oreolek/ink-instead.git
synced 2024-04-29 23:59:25 +03:00
69 lines
2.1 KiB
Lua
69 lines
2.1 KiB
Lua
local lpeg = require "lpeg"
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lpeg.locale(lpeg)
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local S,C,Ct,Cc,Cg,Cb,Cf,Cmt,P,V =
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lpeg.S, lpeg.C, lpeg.Ct, lpeg.Cc, lpeg.Cg, lpeg.Cb, lpeg.Cf, lpeg.Cmt,
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lpeg.P, lpeg.V
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local eof = -1
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local sp = S" \t" ^0 + eof
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local wh = S" \t\r\n" ^0 + eof
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local nl = S"\r\n" ^1 + eof
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local id = (lpeg.alpha + '_') * (lpeg.alnum + '_')^0
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local addr = C(id) * ('.' * C(id))^-1
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local todo = Ct(sp * 'TODO:'/"todo" * sp * C((1-nl)^0)) * wh
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local commOL = Ct(sp * '//'/"comment" * sp * C((1-nl)^0)) * wh
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local commML = Ct(sp * '/*'/"comment" * wh * C((P(1)-'*/')^0)) * '*/' * wh
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local comm = commOL + commML + todo
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local glue = Ct(P'<>'/'glue') *wh -- FIXME do not consume spaces after glue
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local divertSym = '->' *wh
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local divertEnd = Ct(divertSym/'end' * 'END' * wh)
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local divertJump = Ct(divertSym/'divert' * addr * wh)
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local divert = divertEnd + divertJump
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local knot = Ct(P('=')^2/'knot' * wh * C(id) * wh * P('=')^0) * wh
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local stitch = Ct(P('=')^1/'stitch' * wh * C(id) * wh * P('=')^0) * wh
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local optDiv = '[' * C((P(1) - ']')^0) * ']'
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local optStar = sp * C'*'
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local optStars = wh * Ct(optStar * optStar^0)/table.getn
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local gatherMark = sp * C'-'
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local gatherMarks = wh * Ct(gatherMark * gatherMark^0)/table.getn
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local hash = P('#')
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local tag = hash * wh * V'text'
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local tagGlobal = Ct(Cc'tag' * Cc'global' * tag * wh)
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local tagAbove = Ct(Cc'tag' * Cc'above' * tag * wh)
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local tagEnd = Ct(Cc'tag' * Cc'end' * tag * sp)
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local ink = P({
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"lines",
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stmt = glue + divert + knot + stitch + V'option' + optDiv + comm + V'include',
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text = C((1-nl-V'stmt'-hash)^1),
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textEmptyCapt = C((1-nl-V'stmt'-hash)^0),
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optAnsWithDiv = V'textEmptyCapt' * sp * optDiv * V'text'^0 * wh,
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optAnsWithoutDiv = V'textEmptyCapt' * sp * Cc '' * Cc '' * wh, -- huh?
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optAns = V'optAnsWithDiv' + V'optAnsWithoutDiv',
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option = Ct(Cc'option' * optStars * sp * V'optAns'),
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gather = Ct(Cc'gather' * gatherMarks * sp * V'text'),
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include = Ct(P('INCLUDE')/'include' * wh * V'text' * wh),
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para = tagAbove^0 * Ct(Cc'para' * V'text') * tagEnd^0 * wh + tagGlobal,
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line = V'stmt' + V'gather'+ V'para' ,
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lines = Ct(V'line'^0)
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})
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return ink;
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