Add self-hosted Javascript script

5 files changed, 350 insertions, 0 deletions

diff --git a/bqn.js b/bqn.js
new file mode 100644
index 00000000..1ce3aea4
--- /dev/null
+++ b/bqn.js
@@ -0,0 +1,129 @@
+// Virtual machine
+let assert = x => { if (!x) throw Error(); }
+let has = x => x!==undefined;
+let call = (f,x,w) => {
+  let ff = f;
+  if (typeof f === "function") {
+    assert(!f.m1&&!f.m2);
+  } else {
+    ff = ()=>f;
+  }
+  return !has(x) ? x : ff(x,w);
+}
+let get1= i => (v=>(assert(v!==null),v))(i[0][i[1]]);
+let get = i => i.a ? arr(i.map(get),i.sh) : get1(i);
+let set = (d,id,v) => {
+  let eq = (a,b) => a.length===b.length && a.every((e,i)=>e===b[i]);
+  if (id.a) {
+    assert(v.a&&eq(id.sh,v.sh)); id.map((n,j)=>set(d,n,v[j]));
+  } else {
+    let [a,i]=id; assert((a[i]===null)==d); a[i]=v;
+  }
+  return v;
+}
+let run = (B,O,S) => { // Bytecode, Objects, Sections/blocks
+  // Turn each block into an environment=>pushable value map
+  let D = S.map(([t,i,st,l]) => e => {
+    let v=Array(l).fill(null);
+    let c = sv => vm(st,[sv.concat(v)].concat(e));
+    return [
+      n => n([]),
+      n => {let r=(f  )=>n([r,f  ]);r.m1=1;return r;},
+      n => {let r=(f,g)=>n([r,f,g]);r.m2=1;return r;}
+    ][t]([
+      v => {let r=(x,w)=>c([r,x,w].concat(v));return r;},
+      c
+    ][i]);
+  });
+  // Execute
+  let vm = (p,e) => { // Program counter, Environment
+    let s=[]; // Stack
+    let num = () => {
+      let b=128,n=B[p++];
+      if (n<b) return n;
+      let i=1, t=0;
+      do { t+=i*(n-b); i*=b; n=B[p++]; } while (n>=b);
+      return t+i*n;
+    }
+    while (1) switch(B[p++]) {
+      case 0: s.push(O[num()]);break;
+      case 3: case 4: {let a=s.splice(s.length-num());s.push(list(a));break;}
+      case 5: case 16:{let[x,f]  =s.splice(-2);s.push(call(f,x  ));break;}
+      case 6: case 17:{let[x,f,w]=s.splice(-3);s.push(call(f,x,w));break;}
+      case 7:         {let[m,f]  =s.splice(-2);assert(m.m1);s.push(m(f  ));break;}
+      case 8:         {let[g,m,f]=s.splice(-3);assert(m.m2);s.push(m(f,g));break;}
+      case 9:         {let[h,g]  =s.splice(-2);s.push((x,w)=>call(g,call(h,x,w)));break;}
+      case 10:case 19:{let[h,g,f]=s.splice(-3);s.push((x,w)=>call(g,call(h,x,w),has(f)?call(f,x,w):f));break;}
+      case 11:        {let[v,  i]=s.splice(-2);s.push(set(1,i,v));break;}
+      case 12:        {let[v,  i]=s.splice(-2);s.push(set(0,i,v));break;}
+      case 13:        {let[x,f,i]=s.splice(-3);s.push(set(0,i,call(f,x,get(i))));break;}
+      case 14:{s.pop();break;}
+      case 15:{s.push(D[num()](e));break;}
+      case 21:{let v=e[num()][num()];assert(v!==null);s.push(v);break;}
+      case 22:{s.push([e[num()],num()]);break;}
+      case 25:assert(s.length===1);return s[0];
+    }
+  }
+  try {
+  return D[0]([]);
+  } catch (err) {
+  return "error"
+  }
+}
+
+// Runtime
+let arr = (r,sh) => {r.sh=sh;r.a=1;return r;}
+let list = l => arr(l,[l.length]);
+let str = s => list(Array.from(s));
+let m1 = m => {m.m1=1;return m;}
+let m2 = m => {m.m2=1;return m;}
+let lesseq = (x,w) => {
+  let s=typeof w, t=typeof x;
+  return +(s!==t ? s<=t : w<=x);
+}
+let table = m1(f => (x,w) => !has(w)
+  ? arr(x.map(e=>call(f,e)),x.sh)
+  : arr([].concat.apply([],w.map(d=>x.map(e=>call(f,e,d)))),w.sh.concat(x.sh)));
+let scan = m1(f => (x,w) => {
+  let s=x.sh;assert(!has(w)&&x.a&&s.length>0);
+  let c=1;for(let i=1;i<s.length;i++)c*=s[i];
+  let l=x.length,r=Array(l),i=0;
+  for(;i<c;i++) r[i]=x[i];
+  for(;i<l;i++) r[i]=call(f,x[i],r[i-c]);
+  return arr(r,s);
+});
+
+let runtime = run(
+  new 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+ ,[1,0,2,Infinity,-Infinity,-1]
+ ,[[0,1,0,0],[0,0,3,144],[2,0,2537,6],[2,0,2565,6],[0,0,2600,3],[0,0,2604,3],[0,0,2608,3],[1,0,2612,5],[2,0,2630,6],[2,0,2645,6],[2,0,2664,6],[2,0,2686,6],[2,0,2708,6],[0,0,2741,3],[1,0,2753,9],[0,0,2873,4],[1,1,2956,3],[1,1,3002,2],[1,1,3017,2],[1,1,3043,2],[0,0,3087,3],[0,0,3110,3],[0,0,3133,3],[0,0,3162,3],[0,0,3174,3],[0,0,3205,3],[0,0,3211,5],[0,0,3329,5],[0,0,3363,3],[0,0,3390,3],[0,0,3425,3],[0,0,3457,3],[0,0,3502,3],[0,0,3511,3],[0,0,3517,4],[1,1,3619,2],[2,0,3690,10],[2,0,3749,8],[1,1,3939,2],[1,0,3949,5],[2,1,3990,4],[0,0,4026,3],[0,0,4177,8],[0,0,4415,4],[0,0,4496,3],[0,0,4547,4],[0,0,4666,3],[0,0,4717,4],[0,0,4880,3],[0,0,4928,4],[0,0,4981,3],[0,0,5056,3],[0,0,5089,3],[0,0,5103,11],[0,0,5368,5],[0,0,5539,4],[0,0,5752,3],[2,0,5771,6],[0,0,5799,4],[0,0,5915,4],[0,0,5968,4],[0,0,6035,4],[1,0,6303,7],[1,0,6383,8],[0,0,6410,3],[0,0,6428,5],[1,1,6535,3],[1,0,6559,9],[1,0,6695,14],[0,0,7132,3],[0,0,7173,3],[0,0,7211,3],[0,0,7254,3],[1,1,7307,2],[2,0,7316,13],[2,0,7468,11],[1,1,7616,2],[1,1,7620,2],[1,1,7624,2],[0,0,7628,3],[0,0,7640,3],[0,0,7665,3],[1,0,7687,11],[1,0,7932,5],[1,0,7947,5],[0,0,7958,3],[0,0,8008,3],[0,0,8028,3],[1,0,8083,6],[0,0,8238,6],[0,0,8374,3],[0,0,8403,4],[0,0,8471,3],[0,0,8490,5],[0,0,8568,5],[0,0,8718,3],[0,0,8820,3],[0,0,8875,4],[0,0,8937,3],[0,0,9009,3],[1,1,9039,2],[0,0,9043,3],[0,0,9061,3],[0,0,9087,6],[0,0,9199,6],[0,0,9248,4],[0,0,9277,4],[0,0,9360,3],[0,0,9423,3],[0,0,9443,3],[1,0,9485,5],[0,0,9521,3],[0,0,9547,3],[0,0,9561,3],[0,0,9603,3],[0,0,9622,5],[0,0,9736,3],[0,0,9791,3],[0,0,9814,3],[0,0,9857,6]]
+)(list([
+  (x,w) => +(x.a===1)                                   // IsArray
+ ,(x,w) => 0                                            // Type
+ ,(x,w) => has(w)?Math.log(x)/Math.log(w):Math.log(x)   // Log  
+ ,(x,w) => assert(x===1)                                // !
+ ,(x,w) => has(w)?w+x:x                                 // +
+ ,(x,w) => (has(w)?w:0)-x                               // -
+ ,(x,w) => w*x                                          // ×
+ ,(x,w) => (has(w)?w:1)/x                               // ÷
+ ,(x,w) => has(w)?Math.pow(w,x):Math.exp(x)             // ⋆
+ ,(x,w) => Math.floor(x)                                // ⌊
+ ,(x,w) => has(w)?+(x===w):x.a?x.sh.length:0            // =
+ ,lesseq                                                // ≤
+ ,(x,w) => list(x.sh)                                   // ≢
+ ,(x,w) => (r=>arr(r,has(w)?w:[r.length],1))(x.slice()) // ⥊
+ ,(x,w) => x[w]                                         // ⊑
+ ,(x,w) => list(Array(x).fill(undefined).map((_,i)=>i)) // ↕
+ ,table                                                 // ⌜
+ ,scan                                                  // `
+]));
+
+// Compiler
+let compile = run(
+  new 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+ ,[runtime[0],runtime[1],runtime[2],runtime[3],runtime[4],runtime[6],runtime[7],runtime[8],runtime[9],runtime[10],runtime[11],runtime[12],runtime[13],runtime[14],runtime[15],runtime[16],runtime[17],runtime[20],runtime[21],runtime[22],runtime[23],runtime[24],runtime[25],runtime[26],runtime[27],runtime[28],runtime[30],runtime[31],runtime[32],runtime[33],runtime[34],runtime[35],runtime[36],runtime[37],runtime[38],runtime[39],runtime[41],runtime[42],runtime[43],runtime[44],runtime[45],runtime[46],runtime[48],runtime[49],runtime[50],runtime[51],runtime[52],runtime[53],runtime[55],runtime[58],9,0,3,5,2,6,-1,1,4,10,3.14159265358979,Infinity,128,21,15,25,14,11,16,7,'\t','\n',str("0123456789"),str("ABCDEFGHIJKLMNOPQRSTUVWXYZ"),str("abcdefghijklmnopqrstuvwxyz"),str("+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!"),str("˜˘¨⌜⁼´˝`"),str("∘○⊸⟜⌾⊘◶⎉⚇⍟"),str("⋄,"),str("←↩→"),str("(){}⟨⟩"),str("‿"),str("·"),str("𝕊𝕏𝕎𝔽𝔾𝕤𝕩𝕨𝕗𝕘"),str("¯.π∞"),str("_"),str(" "),'#','\'','"','e',str("'")]
+ ,[[0,1,0,30],[0,0,359,30],[0,0,1484,13],[0,0,1801,6],[0,0,1874,72],[0,0,4856,11],[0,0,4979,3],[0,0,4994,3],[0,0,5034,4]]
+)
+let bqn = src => run.apply(null,compile(str(src),runtime));
+
+if(typeof module!=='undefined'){module.exports=bqn;}
diff --git a/src/c.bqn b/src/c.bqn
new file mode 100644
index 00000000..eed5f843
--- /dev/null
+++ b/src/c.bqn
@@ -0,0 +1,132 @@
+#! ./dzref
+
+tab←'	'⋄nl←'
+'
+dig ← "0123456789"
+alph ← "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+alow ← "abcdefghijklmnopqrstuvwxyz"
+charSet←∾charGroups←⟨
+  chF←"+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!" # Function
+  "˜˘¨⌜⁼´˝`"            # Modifier
+  "∘○⊸⟜⌾⊘◶⎉⚇⍟"          # Composition
+  nl∾"⋄,"               # Separator
+  "←↩→"                 # Gets
+  "(){}⟨⟩"              # Bracket
+  "‿"                   # Ligature
+  "·"                   # nOthing
+  "𝕊𝕏𝕎𝔽𝔾𝕤𝕩𝕨𝕗𝕘"          # Input (𝕣 pending; ℝ not allowed)
+  dig                   # Digit
+  "¯.π∞"                # Numeric
+  alow∾alph∾"_"         # Alphabetic
+  " "∾tab               # Whitespace
+# #'" eliminated during tokenization
+⟩
+bF‿bM‿bC‿bS‿bG‿bB‿bL‿bO‿bI‿bD‿bN‿bA‿bW←⊔/≠¨charGroups
+vi←+´≠¨9↑charGroups
+charRole←((vi-≠bI)↑/0∾≠¨3↑charGroups)∾(5/⌽↕2)∾0
+spc←⥊3‿5‿6-⌜3‿0
+
+Tokenize←{
+  r←𝕩='#'⋄s←/(≠↑2⊸↓)⊸∧𝕩='''⋄d←/𝕩='"'
+  g←⍋q←∾⟨  s⋄¯1↓d⋄/r⟩ ⋄q↩g⊏q
+  e← g⊏∾⟨2+s⋄ 1↓d⋄(⊢-¯1↓0∾⊢)∘⊏⟜(0∾+`r)⊸//(𝕩=nl)∾1⟩
+  Se←{(⊏˜𝕨)Se 1¨⌾((𝕩/𝕨)⊸⊏)𝕩}⍟{0=⊑⌽𝕩}
+  st←¯1↓Se⟜(1↑˜≠)∾⟜≠q⍋e⋄b←st/q∾˘e
+  ToI←¯1↓·/⁼(≠𝕩)∾˜⥊⋄f←¬≠`ToI b
+  cb←(¬(st/q)⊏r)/b
+  lu←⍷lit←𝕩⊔˜1-˜(+`ToI⊑˘cb)×≠`ToI cb
+  cl←f/ToI⊑∘⌽˘cb
+
+  c←charSet⊐f/𝕩
+  w←(≠↑0∾⊢)⊸<l←c∊∾bD‿bN‿bA
+  i←(1-˜l×+`w)⊔c
+  na←≠alph⋄us←¯1⊑bA
+  in←na(⊢-⊣×+⟜(⊑bA)⊸≤)us⊸≠⊸/¨i
+  id←⍷(bA∊˜w/c)⍒⊸⊏in⋄nv←+´bA∊˜⊑¨id
+
+  c↩(w∨¬l∨c∊bW)/(vi+id⊐in)⌾(w⊸/)(vi+(≠id)+lu⊐lit)⌾(cl⊸/)c
+  c/˜↩¬(≠↑1∾(c∊2‿4⊏bB)∨⊢)⊸∧c∊bS⋄c/˜↩¬(1↓1∾˜c∊3‿5⊏bB)∧c∊bS
+  ti←(us=¯1⊸⊑¨i)(⊢+∧⟜(2⊸=))0⌈na⌊∘÷˜(⊑bA)-˜⊑¨i
+  ic←(0⊸≤∧<⟜(≠id))c-vi⋄t←ti⌾(ic⊸/)(vi⌊c)⊏charRole
+  c+↩5×c∊5↑bI
+  ⟨c,t,nv,(nv↓id)∾lu⟩
+}
+
+ReadNum←{
+  n‿d‿p‿i←bN  # ¯.π∞
+  Nat←+⟜(10⊸×)´∘⌽ -⟜(⊑bD)
+  Int←(n=⊑)◶⟨Nat,-·Nat 1⊸↓⟩
+  Dec←⊐⟜(<d)⊸(Nat∘↑ + ·(0<≠)◶⟨0,Nat÷10⋆≠⟩+⟜1⊸↓)
+  Pos←(⊑p‿i⊐⊏)◶⟨π,∞,Dec⟩
+  e←⊑𝕩⊐charSet⊐<'e'
+  m←(n=⊑)◶⟨Pos,-·Pos 1⊸↓⟩e↑𝕩
+  𝕩×⟜(10⋆·Int(e+1)↓⊣)˜⍟(e<≠𝕩)m
+}
+LitVal←(⊑("'"∾'"')⊐⊏)◶⟨1⊸⊑,1⊸↓,ReadNum⟩
+
+
+LEBv ← {
+  b←128
+  l←⌊b⋆⁼1⌈𝕩
+  o←⍋⍋⊒/1+l
+  o⊏l{f←×𝕨⋄(𝕨-1)(b⊸(×⟜f+|)∾𝕊⟜(⌊÷⟜b)○(f⊸/))⍟(∨´f)𝕩}𝕩
+}
+
+Parse ← {nv‿r←𝕨
+  g←⍋+`p←bB(⊣(≠⊸>ׯ1⋆2|⊢)⊐)𝕩⋄br←p×𝕩∊2‿3⊏bB
+  sl←1⊸⌽⊸∨𝕩∊bL⋄sr←¯1⊸⌽⌾(g⊸⊏)sl⋄sa←sl∨sr
+  g⊏˜↩⍋g⊏sl⋄r×↩¬sa⋄o←p>0
+  r+↩(sa<𝕩=1⊑bB)(⊣∧¬⊸∨=○(⌈`(1+↕∘≠)⊸×)⊢)(¯1⊸⌽⌾(g⊸⊏)3=r)∨1≤r
+  rev←⍋+`1+¯1↓g((¯1∾⊣)(⊣⍋⊸⊏⊏˜-⊏˜⟜⍋)⟜⍋1(+`∘∾-∾˜)⊏)o∨sl∨𝕩∊bS
+
+  gf←⍋fd←+`rev⊏br
+  rev⊏˜↩gf⋄fd⊏˜↩gf
+  𝕩⊏˜↩rev⋄bv←rev⊏br⋄b←/bv<0⋄fi←+`c←bv>0
+
+  FC←-⟜(≠↑0∾⊢)(c∾1)/·+`∾⟜0
+  H←0<1↓·FC𝕩∊(5⊑bI)+⊢
+  ft←0∾(H↕3)+2×(H⥊3)⌈2×H⥊4
+  r↩((1↓ft)⊏(1+2⊸≤)⊸/↕4)⌾(b⊸⊏)rev⊏r
+
+  id←/idm←(0⊸≤∧<⟜nv)xv←𝕩-vi⋄idx←id⊏𝕩⋄sp←/𝕩∊bI
+  ad←(⌈`↕∘≠⊸×𝕩∊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⊏˜↩g⋄o⊏˜↩gr⋄si←/gr⊏sr>sl
+  gi←⍋g⋄l⊏↩⍋gs
+  s←𝕩∊bS⋄ps←s∨o∨gr⊏sl⋄a←𝕩∊2↑bG
+  r-↩ps∨a⋄op←r≥2⋄fe←(r≥1)∨1⌽r=3
+  tr←(⌈`↕∘≠⊸ׯ1⌽ps)⊏fe
+  ma←tr<(𝕩=1⊑bG)∧1⌽fe
+  ro←op∨a<1⌽r=3⋄os←⌽↕∘≠⊸(⊣-⌈`∘×)⌽¬ro∨ma⋄at←(⊢+1+⊏⟜os)/a
+  aa←g⊏asn←¯1⌽+`gi⊏-⟜(≠↑0∾⊢)(↕≠𝕩)∊at-1⋄r↩¯1¨⌾(aa⊸/)r
+  tf←(a≤○(⌈`(1+↕∘≠)⊸×)ps)∧(⊢∧2(|<≤)ps(⊢-⌈`∘×)+`)¬ro
+  opa←op>1↓0∾˜ps∨a
+  oa←⌽/opa⋄fa←/(1⌽aa)<(tf∨¬tr)∧(ro∧1⌽opa)<(r=1)∨op<¯1⌽opa
+  dy←fa⊏1↓0∾˜(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←FC dec
+  ig←⍋(⊏⟜(¯1∾c/gf)∾d⊸/⊏((≠𝕩)∾b⊏gf)˜)id⊏fi
+  ig↩<⟜(≠id)⊸/(⍋+`∘⊏⟜(d∾-/˜d))⊸⊏(⍋⊏⟜(∾⟜(d⊸/)idx))⊸⊏ig
+  ui←d(⌈`↕∘≠⊸×)⊸⊏⌾(ig⊸⊏)id
+  ii←(ui⊏(fi⊏ft⊏spc)-(⌈`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∊bc0+⟜↕○≠rt)≍○<¨lc+ft⊏spc
+  ⟨LEBv bc∾25,u,fs⟩
+}
+
+Compile←{
+  ⟨t,r,nVar,lits⟩←Tokenize𝕩
+  ⟨bc,u,blk⟩←nVar‿r Parse t
+  o←(u-(vi+nVar-≠𝕨)×u≥vi)⊏𝕨∾LitVal¨lits
+  ⟨bc,o,blk⟩
+}
diff --git a/src/cjs.bqn b/src/cjs.bqn
new file mode 100755
index 00000000..cb60b7df
--- /dev/null
+++ b/src/cjs.bqn
@@ -0,0 +1,15 @@
+#! /usr/bin/env dbqn
+
+compile ← ⟨•path∾"../c.bqn"⋄"DGenFn"⟩ •EX •path∾"../dzref"
+Symcomp ← ((<"runtime["∾⍕∾"]"˜)¨↕59)⊸Compile
+FP ← ∞⊸=◶⟨⍕,"Infinity"⟩
+Str ← "str("""∾∾⟜""")"
+Char ← "'"(∾∾⊣)(⟨"\t","\n","\'"⟩∾<)⊑˜("'"∾˜•UCS 9‿10)⊑∘⊐⊢
+Fmt ← ≡◶⟨(⊑⍋)∘(∾⟜∞)◶⟨0⊸≤◶⟨"-"∾FP∘|,FP⟩,Char⟩⋄Str⋄⊑⟩
+L ← "["∾"]"∾˜1↓·∾","⊸∾⟜⍕¨
+G ← ⟨L∾⟜25,L Fmt¨,L⟨⊑"fmd"⊸⊐,⊢,⊢,≠⟩⊸(L{𝕎𝕩}¨)¨⟩ {𝕎𝕩}¨ 0‿1‿3 ⊏ Symcomp
+Gen ← L G
+GenLong ← ∾ (1‿2/⟨"  new Uint8Array("∾∾⟜")"⋄((•UCS 10)∾" ,")⊸∾⟩) {𝕎𝕩}¨ G
+• ← ∾∾⟜(•UCS 10)¨ Gen¨ •args
+#• ← GenLong •EX •path∾"pr.bqn"
+#• ← GenLong ∾∾⟜(•UCS 10)¨ (•LNS •path∾"c.bqn")∾<"Compile"
diff --git a/src/pr.bqn b/src/pr.bqn
new file mode 100755
index 00000000..d68b3453
--- /dev/null
+++ b/src/pr.bqn
@@ -0,0 +1,47 @@
+#!/usr/bin/env dbqn
+
+# Process BQN runtime
+
+impl ← •LNS •path∾"../impl.bqn"
+
+chrs←⟨
+  "+-×÷⋆√⌊⌈|¬∧∨<>≠=≤≥≡≢⊣⊢⥊∾≍↑↓↕⌽⍉/⍋⍒⊏⊑⊐⊒∊⍷⊔!"
+  "˜˘¨⌜⁼´˝`"
+  "∘○⊸⟜⌾⊘◶⎉⚇⍟"
+⟩
+nc ← ≠¨chrs
+chr ← ∾chrs
+itr ← 0⥊˜≠chr
+
+init ← " "⊸∾¨(/⟜"_"¨nc/0‿1‿1)∾¨(nc/"FMD")∾¨(nc+´⊸↑⥊"ABC"∾⌜•a)
+post ← ∾⟜" "¨/⟜"_"¨nc/0‿0‿1
+names ← init∾¨(•UCS 48)∾¨post
+
+Inc ← {
+  i←⊑chr⊐𝕩
+  n←0 ⋄ itr↩{n↩1+𝕩}⌾(i⊑⊢)itr
+  names↩((i⊑init)∾(•UCS 48+n)∾i⊑post)⌾(i⊑⊢)names
+}
+
+# Required functionality passed in as an argument
+pnam ← ⟨"IsArray", "Type", "Log"⟩∾names⊏˜chr⊐"!+-×÷⋆⌊=≤≢⥊⊑↕⌜`"
+
+
+E_isdef ← (3≤≠)◶⟨0,∧´⟨chr," ","←↩"⟩∊˜¨3⊸↑⟩
+E_proc ← {
+  l←≠chr
+  q←≠`𝕩∊"""'" ⋄ f←¬∨`q¬⊸∧𝕩='#'
+  ∾ (((l×f/q)+chr⊸⊐) (≥⟜l)◶⟨⊑⟜names,⥊∘⊢⟩¨ ⊢) f/𝕩
+}
+E_redef ← { # handles [fmd] [←↩]
+  tail ← E_proc 3↓𝕩 # must use old def
+  Inc ⊑𝕩
+  (E_proc 1↑𝕩) ∾ "←" ∾ tail
+}
+
+ref ← ∾ ∾⟜(•UCS 10)¨ ∾⟨
+  ⟨"{"⟩
+  ⟨"←𝕩"∾˜"⟨"∾"⟩"∾˜1↓∾","⊸∾¨pnam⟩
+  E_isdef◶E_proc‿E_redef¨ impl∾<"⟨"∾"⟩"∾˜1↓⥊","⊸∾˘∾chrs
+  ⟨"}"⟩
+⟩
diff --git a/test/tj.js b/test/tj.js
new file mode 100755
index 00000000..7fa44614
--- /dev/null
+++ b/test/tj.js
@@ -0,0 +1,27 @@
+//usr/bin/env node "$0" $@;exit $?
+
+const bqn=require(__dirname+'/../bqn.js')
+    , load=f=>require('fs').readFileSync(__dirname+'/'+f,'utf8');
+
+if (process.argv.length <= 2) {
+  const t=load('cases.bqn').split('\n').filter(x=>x).map(x=>x.split(' % '))
+      , test=t.map(e=>e[1])
+      , expt=t.map(e=>+e[0]);
+//let test= load('testref.bqn').split('\n')
+//        .filter(x=>x.charAt(0)===' '
+//                 &&x.charAt(1)===' '
+//                 &&x.charAt(2)!=='#'
+//                 &&x.indexOf(':')===-1
+//                 &&x.indexOf('e¯')===-1)
+//        .map(x=>x.slice(2))
+//    , t=test.map(e=>[0,e])
+//    , expt=test.map(e=>1);
+
+  test.map((t,i) => {
+    console.log(t);
+    let e=expt[i], r=bqn(t);
+    console.log(e===r ? " Passed!" : " Expected "+e+" but received "+r);
+  });
+} else {
+  console.log(process.argv.slice(2).map(bqn));
+}