local type,setmetatable,getmetatable,rawset=type,setmetatable,getmetatable,rawset;local a,b=table.concat,table.insert;local tostring=tostring;local c=require'pl.utils'local pairs,rawget,d,e=pairs,rawget,c.unpack,c.pack;local f=require'pl.tablex'local g=f.map;local h=rawget(_G,'_DEBUG')local i=c.assert_arg;local j={}local k={}local function l(m)setmetatable(m,k)return m end;j.PE=l;local function n(o)return getmetatable(o)==k end;j.isPE=n;local function p(q)return l{op='X',repr='_'..q,index=q}end;local function r(q)return l{op='X',repr='_C'..q,index=q}end;j._1,j._2,j._3,j._4,j._5=p(1),p(2),p(3),p(4),p(5)j._0=l{op='X',repr='...',index=0}function j.Var(s)local t=c.split(s,'[%s,]+')local u={}for v=1,#t do b(u,l{op='X',repr=t[v],index=0})end;return d(u)end;function j._(w)return l{op='X',repr=w,index='wrap'}end;local x;j.Nil=j.Var'nil'function k.__index(o,y)return l{op='[]',o,y}end;function k.__call(z,...)return l{op='()',z,...}end;function k.__tostring(A)return x(A)end;function k.__unm(B)return l{op='unm',B}end;function j.Not(B)return l{op='not',B}end;function j.Len(B)return l{op='#',B}end;local function C(D,m)for s,E in pairs(m)do rawset(D,s,function(F,G)return l{op=E,F,G}end)end end;local function H(s,z,D)rawset(D,s,function(...)return l{op='()',z,...}end)end;local I={}local function J(K)return type(_G[K])=='table'end;function j.import(L,D)i(1,L,'string',J,'arg# 1: not a name of a global table')local m=_G[L]D=D or _G;for s,z in pairs(m)do H(s,z,D)I[z]=s end end;function j.register(z,s)i(1,z,'function')if s then i(2,s,'string')I[z]=s end;return function(...)return l{op='()',z,...}end end;function j.lookup_imported_name(z)return I[z]end;local function M(...)return...end;function j.Args(...)return l{op='()',M,...}end;local N={['or']=0,['and']=2,['==']=4,['~=']=4,['<']=4,['>']=4,['<=']=4,['>=']=4,['..']=6,['+']=8,['-']=8,['*']=10,['/']=10,['%']=10,['^']=14}local O={['not']=12,['#']=12,['unm']=12}C(j,{And='and',Or='or',Eq='==',Lt='<',Gt='>',Le='<=',Ge='>='})C(k,{__add='+',__sub='-',__mul='*',__div='/',__mod='%',__pow='^',__concat='..'})C(k,{__eq='=='})function j.tail(t)i(1,t,'table')local u={}for v=2,#t do b(u,t[v])end;return u end;function x(A,P)local Q=j.tail;if n(A)then local R=N[A.op]or O[A.op]if R then local S;if N[A.op]then local T=R;local U=R;if A.op=='..'or A.op=='^'then T=T+1 else U=U+1 end;local V=x(A[1],T)local W=x(A[2],U)S=V..' '..A.op..' '..W else local E=A.op=='unm'and'-'or A.op;S=E..' '..x(A[1],R)end;if P and P>R then S='('..S..')'end;return S else local t=g(x,A)if A.op=='[]'then return t[1]..'['..t[2]..']'elseif A.op=='()'then local X;if t[1]~=nil then X=t[1]else X=''end;return X..'('..a(Q(t),',')..')'else return A.repr end end elseif type(A)=='string'then return'"'..A..'"'elseif type(A)=='function'then local s=j.lookup_imported_name(A)if s then return s else return tostring(A)end else return tostring(A)end end;j.repr=x;local Y;function Y(A,Z)if n(A)then if A.op~='X'then local _=0;for v=1,#A do local a0=A[v]local a1=n(a0)if a1 then if a0.op=='X'and a0.index=='wrap'then a0=a0.repr;a1=false else _=math.max(_,Y(a0,Z))end end;if not a1 then b(Z,a0)A[v]=r(#Z)end end;return _ else return A.index end else return 0 end end;j.collect_values=Y;function j.instantiate(A)local a2,a3,a4={},{},{}local a5,a6,z;local K=j.collect_values(A,a3)for v=1,#a3 do b(a2,'_C'..v)if h then print(v,a3[v])end end;for v=1,K do b(a4,'_'..v)end;a2=a(a2,',')a4=a(a4,',')a5=x(A)local a7=('return function(%s) return function(%s) return %s end end'):format(a2,a4,a5)if h then print(a7)end;z,a6=c.load(a7,'fun')if not z then return nil,a6 end;z=z()z=z(d(a3))A.__PE_function=z;return z end;function j.I(A)if rawget(A,'__PE_function')then return A.__PE_function else return j.instantiate(A)end end;c.add_function_factory(k,j.I)j.bind1=c.bind1;j.curry=j.bind1;function j.compose(a8,a9)return function(...)return a8(a9(...))end end;function j.bind(X,...)local aa=e(...)local ab,a4,ac,a3={},{},{'fn'},{}local ad,ae,af=1,0,false;for v=1,aa.n do local ag=aa[v]if n(ag)and ag.op=='X'then b(ab,ag.repr)ae=math.max(ae,ag.index)if ag.index==0 then af=true end else local ah='_v'..ad;b(ac,ah)b(ab,ah)b(a3,ag)ad=ad+1 end end;for ai=1,ae do b(a4,'_'..ai)end;if af then b(a4,'...')end;ac=a(ac,',')a4=a(a4,',')ab=a(ab,',')local a7=([[
return function (%s)
return function(%s) return fn(%s) end
end
]]):format(ac,a4,ab)if h then print(a7)end;local u=c.load(a7)u=u()return u(X,d(a3))end;return j
