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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
lf←@+10
charSet‿cgl←(∾ ≍○< ≠¨)⟨
"+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕«»⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!" # Function
"˙˜˘¨⌜⁼´˝`" # Modifier
"∘○⊸⟜⌾⊘◶⎉⚇⍟" # Composition
lf∾"⋄," # Separator
"←↩→" # Gets
"(){}⟨⟩" # Bracket
"‿" # Ligature
"·" # nOthing
# Use last character in case of UTF-16 (like dzaima/BQN)
¯1⊏˘10‿∘⥊"𝕊𝕏𝕎𝔽𝔾𝕤𝕩𝕨𝕗𝕘" # Input (𝕣 pending; ℝ not allowed)
'0'+↕10 # Digit
"π∞¯." # Numeric
"_"∾˜⥊"aA"+⌜↕na←26 # Alphabetic
(¯1↓"𝕨")∾" "∾@+9 # Whitespace (or special name prefix in UTF-16)
"#'""@" # Preprocessed characters
⟩
ErrUnknownChars←{
⟨"Unknown character","s"/˜1<≠𝕩,": ",𝕩⟩∾⊸!0
}
CharCode←charSet{
Chk ← ⊢⊣ErrUnknownChars∘(≠/⊣)⍟≢⟜(⊏⟜𝕗)
g←⍋𝕗 ⋄ ⊢ Chk g⊏˜1-˜1⌈(g⊏𝕗)⍋⊢
}
bF‿bM‿bC‿bS‿bG‿bB‿bL‿bO‿bI‿bD‿bN‿bA‿bW‿bP←≍¨˜⟜(+`»)cgl
M←1⊸⊑(0⊸≤∧>)-⟜⊑
vi←⊑bD
charRole←((⊑bI)↑/0∾3↑cgl)∾(5/⌽↕2)∾0
spc←⥊3‿5‿6-⌜3‿0
Tokenize←{
r←𝕩='#'⋄s←/0‿0⊸«⊸∧sm←𝕩='''⋄d←/dm←𝕩='"'
g←⍋q←∾⟨ s⋄¯1↓d⋄/r⟩ ⋄q↩g⊏q
e← g⊏∾⟨2+s⋄ 1↓d⋄-⟜»∘⊏⟜(0∾+`r)⊸//(𝕩=lf)∾1⟩
Se←{(⊏˜𝕨)Se 1¨⌾((𝕩/𝕨)⊸⊏)𝕩}⍟{0=¯1⊑𝕩}
st←¯1↓Se⟜(1↑˜≠)∾⟜≠q⍋e⋄q/˜↩st⋄e/˜↩st
n←≠𝕩⋄a←n↑/⁼q⋄b←n↑/⁼e
f←¬(≠`a∨b)∨«qe←a∧»⊸∧dm
"Unclosed quote"!¬∨´(sm∨dm)∧b<f
u←f∧𝕩='@'⋄ci←/u∨»a∧sm
chr←(ci⊏𝕩)-(ci⊏u)×'@'-@
str←1↓¨𝕩⊔˜1-˜(+`si←dm∧a>qe)×≠`dm∧a∨b
c←CharCode f/𝕩
w←»⊸<l←c M bD(⊣≍-˜)○⊑bW⋄us←c=¯1++´bA
tw←na⌊∘÷˜(⊑bA)-˜w/c
c-↩na×l∧c≥na+⊑bA
li←l>in←l∧(+`w)⊏0∾tw<0
num←ReadNums in∨⟜«⊸/○(0⊸∾)c×l
ti←(us/˜«⊸<li)(⊢+∧⟜(2⊸=))0⊸≤⊸/tw
id←(1-˜(li>us)×+`w>in)⊔c
ki←((⍋⊏⟜in)⊸⊏/w)∾(ci∾/si)⊏+`»f
k←id‿num‿chr‿str⋄k(⊢>¯1»⌈`)⊸/¨˜↩j←⊐¨k
c↩(w∨¬l∨c M bW)/(∾j++`vi»≠¨k)⌾(ki⊸⊏)c
c/˜↩¬(1»(c∊2‿4+⊑bB)∨⊢)⊸∧c M bS⋄c/˜↩¬(1«c∊3‿5+⊑bB)∧c M bS
t←ti⌾((c M vi∾≠⊑k)⊸/)(vi⌊c)⊏charRole
c+↩5×c M 5≍˜⊑bI
⟨c,t,≠⊑k,∾1↓k⟩
}
ErrNumericChars←{
⟨"Letter","s"/˜1<≠𝕩," """,𝕩⊏charSet,""" not allowed in numbers"⟩∾⊸!0
}
ReadNums←{
e‿p‿i‿n‿d←=⟜𝕩¨((⊑bA)+-´"ea")∾+⟜↕´bN # eπ∞¯.
ErrNumericChars∘(/⟜𝕩)⍟(∨´) ¬e∨𝕩<⊑bA
m←¬n∨s←d∨c←e∨z←0=𝕩
"Negative sign in the middle of a number" ! ∧´n≤»c
"Portion of a number is empty" ! ¬∨´(»¬m)∧s
"Ill-formed decimal or exponent use" ! ∧´(0⊸=∨»⊸<)s/𝕩
"π and ∞ must occur alone" ! ∧´(p∨i)≤1(»∧(p∧«e)∨«)z∨n
l←(¯1∾π‿1∾˜↕10)⊏˜(¬d)/m×𝕩-1-˜⊑bD
v←(>⟜«0≤l)/(0⊸≤××⟜10⊸+)`»«l
v×↩1‿¯1⊏˜(r←>⟜»d∨m)/»n
vm←c/z
ld←(⌈`⊢×1+↕∘≠)d∾0
dp←vm/(»⊸<×-)⟜(⊏⟜ld)(≠«/)c
t←10⋆|ee←dp-˜vm/«v׬vm
t÷˜⌾((0>ee)⊸/)t×⌾((0<ee)⊸/)vm/v×(r/i)⊏1‿∞
}
LEBv ← {
b←128
l←⌊b⋆⁼1⌈𝕩
o←⍋⍋((↕¯1⊑⊢)-/⟜»)⟜(+`)1+l
o⊏l{f←×𝕨⋄(𝕨-1)(b⊸(×⟜f+|)∾𝕊⟜(⌊÷⟜b)○(f⊸/))⍟(∨´f)𝕩}𝕩
}
ErrMismatchedBrackets←{
Lcs ← ¯1 ⊑ 0˘∘⊢ {𝕩⌈⌈`𝕨+«𝕩}˝ =⌜
_mis_ ← {"Missing "∾𝕗∾" "∾charSet⊏˜𝕘+⊢/˜≠∘⊣=⊒}
Msg ← >○≠◶⟨"opening"_mis_ 0, "closing"_mis_ 1˜⟩
0 !˜ 𝕨 (Lcs<⌊○≠)◶⟨Msg,"Malformed bracket nesting"⟩ 𝕩
}
ErrUndeclared←{
0 !˜ "Undefined identifier"∾(1<≠𝕩)/"s"
}
Parse ← {nv‿r←𝕨
g←⍋pd←+`p←𝕩(Mׯ1⋆2|-⟜⊑)bB⋄br←p×𝕩M 2≍˜2+⊑bB
p(=⟜1⊸/ErrMismatchedBrackets⍟≢1-˜=⟜¯1⊸/)○(g⊸⊏)𝕩
"Swapped open and closed brackets" ! 0≤(⊑g)⊑pd
sl←«⊸∨𝕩 M bL⋄sr←»⌾(g⊸⊏)sl⋄sa←sl∨sr
g⊏˜↩⍋g⊏sl⋄r×↩¬sa⋄o←p>0
pt←sa<𝕩=1+⊑bB
rev←⍋+`1+¯1↓g((¯1∾⊣)(⊣⍋⊸⊏⊏˜-⊏˜⟜⍋)⟜⍋1(+`∘∾-∾˜)⊏)o∨sl∨𝕩 M bS
gf←⍋fd←+`rev⊏br
rev⊏˜↩gf⋄fd⊏˜↩gf
𝕩⊏˜↩rev⋄bv←rev⊏br⋄b←/bv<0⋄fi←+`c←bv>0
H←¬·1⊸«⊸/c(∨/⊣)=
ft←(0∾1⊸H+2×2⊸H⌈2×3⊸H)(0‿3‿4‿5+5+⊑bI)⍋𝕩
fsc←ft⊏spc
r↩((1↓ft)⊏(1+2⊸≤)⊸/↕4)⌾((b⊏rev)⊸⊏)r
r+↩pt(⊣∧¬⊸∨=○(⌈`(1+↕∘≠)⊸×)⊢)(»⌾(g⊸⊏)3=r)∨1≤r
id←/idm←(0⊸≤∧<⟜nv)xv←𝕩-vi⋄idx←id⊏𝕩⋄sp←/𝕩 M bI
ad←(⌈`↕∘≠⊸×𝕩 M bG)⊏𝕩=⊑bG
g↩⍋+`rev⊏p-br⋄gr←g⊏rev⋄sll←1+2÷˜0(<-○/>)gr⊏sr-sl⋄l←/g⊏𝕩=5+⊑bB
g⊏˜↩gs←⍋gr⊏sl⋄gr↩g⊏rev⋄𝕩⊏˜↩g⋄r⊏˜↩gr⋄o⊏˜↩gr⋄si←/gr⊏sr>sl
gi←⍋g⋄l⊏↩⍋gs
s←𝕩 M bS⋄ps←s∨o∨gr⊏sl⋄a←𝕩 M 2≍˜⊑bG
r-↩ps∨a⋄op←r≥2⋄fe←(r≥1)∨«r=3
tr←(⌈`↕∘≠⊸×»ps)⊏fe
ma←tr<(𝕩=1+⊑bG)∧«fe
ro←op∨a<«r=3⋄os←⌽↕∘≠⊸(⊣-⌈`∘×)⌽¬ro∨ma⋄at←(⊢+1+⊏⟜os)/a
aa←g⊏asn←»+`gi⊏-⟜»(≠𝕩)↑/⁼at-1⋄r↩¯1¨⌾(aa⊸/)r
tf←(a≤○(⌈`(1+↕∘≠)⊸×)ps)∧(⊢∧2(|<≤)ps(⊢-⌈`∘×)+`)¬ro
opa←op>«ps∨a
oa←⌽/opa⋄fa←/(«aa)<(tf∨¬tr)∧(ro∧«opa)<(r=1)∨op<»opa
dy←fa⊏«(𝕩≠⊑bO)∧(tr∧r≥0)∨ro<r=0
n←𝕩≥vi+nv⋄cn←/n∨𝕩≤¯1++´bC⋄u←∧⍷ob←cn⊏𝕩
lo←(o/𝕩)=4+⊑bB⋄ll←1+lo/1(↓--⊸↓)(o∾1)/+`(s∾0)-(1∾o)∧ps∾1
dr←/s>o+`⊸⊏0∾lo⋄rt←/𝕩=2+⊑bB
d←id⊏dec←idm∧ad∧asn⋄lc←-⟜»(c∾1)/+`dec∾0
ixf←(⊏⟜(¯1∾c/gf)∾d⊸/⊏((≠𝕩)∾b⊏gf)˜)id⊏fi
ig←(⍋⊏⟜(ixx←∾⟜(d⊸/)idx))⊸⊏⍋ixf
"Multiple definitions" ! 1∧´ixx∨○(»⊸≠((≠id)⊸≤⊸/ig)⊏⊢)ixf
ig↩<⟜(≠id)⊸/(⍋+`∘⊏⟜(d∾-/˜d))⊸⊏ig
d⊏˜↩ig⋄ErrUndeclared∘/˜⍟(0∨´⊢)⟜(d<»⊸≠)ig⊏idx
ui←(⌈`↕∘≠⊸×d)⊸⊏⌾(ig⊸⊏)id
ii←(ui⊏(fi⊏fsc)-(⌈`c⊸×)⊸¬+`dec)∾((sp⊏fi)⊏3×2|ft)++⟜(0⊸≤)2+sp⊏xv
idor←∾3⥊<is←id∾sp
idbc←⟨21+is⊏asn,(id-○(⊏⟜fd)ui)∾0¨sp,ii⟩
b⊏↩gi
or←⍋idor∾g⊏˜∾⟨cn,cn,b,b,rt,dr,l,l,si,si,at,oa+1⌈oa⊏os,(dy×⊏⟜os)⊸+fa+dy⟩
bc0←∾idbc∾⟨0¨cn,u⊐ob,15¨b,1+↕≠b⟩
bc←or⊏bc0∾∾⟨25¨rt,14¨dr,3+l⊏aa,ll,3+si⊏aa,sll,(11-⊑bG)+a/ma+𝕩,5+oa⊏r,(⊢+9×10⊸=)16+dy-7×fa⊏tr⟩
fs←(ft⊏⥊3≍⌜⟜⌽○↕2)∾¨((+`0∾1+⌊128⋆⁼1⌈bc)⊏˜/1∾or M bc0≍○≠rt)≍○<¨lc+fsc
⟨LEBv bc∾25,u,fs⟩
}
Compile←{
⟨t,r,nVar,const⟩←Tokenize𝕩
⟨bc,u,blk⟩←nVar‿r Parse t
o←(u-(vi+nVar-≠𝕨)×u≥vi)⊏𝕨∾const
⟨bc,o,blk⟩
}
|
