Add error messages to the runtime

author: Marshall Lochbaum <mwlochbaum@gmail.com> 2020-08-14 12:10:47 -0400
committer: Marshall Lochbaum <mwlochbaum@gmail.com> 2020-08-14 13:53:18 -0400
commit: 1c23dbb833410b2638fdb3b2b0fef083b87ab670 (patch)
tree: 6d08ed6aac4c89f2c5f2307715f405a028f70559
parent: fbed5613ace02a2edc54ffc3dfea614526871ffc (diff)
3 files changed, 79 insertions, 68 deletions
diff --git a/docs/bqn.js b/docs/bqn.js
index 1f4eeddc..ae884646 100644
--- a/docs/bqn.js
+++ b/docs/bqn.js
@@ -80,6 +80,7 @@ let run = (B,O,S) => { // Bytecode, Objects, Sections/blocks
 let arr = (r,sh) => {r.sh=sh;return r;}
 let list = l => arr(l,[l.length]);
 let str = s => list(Array.from(s));
+let unstr = a => has(a)?a.join(""):a;
 let m1 = m => {m.m1=1;return m;}
 let m2 = m => {m.m2=1;return m;}
 let lesseq = (x,w) => {
@@ -119,7 +120,7 @@ let provide = [
  ,(x,w) => has(w)?Math.log(x)/Math.log(w):Math.log(x)   // Log  
  ,group_len                                             // GroupLen
  ,group_ord                                             // GroupOrd
- ,(x,w) => assert(x===1)                                // !
+ ,(x,w) => { if (x!==1) throw Error(unstr(w)); }        // !
  ,(x,w) => has(w)?w+x:x                                 // +
  ,(x,w) => (has(w)?w:0)-x                               // -
  ,(x,w) => w*x                                          // ×
@@ -138,9 +139,9 @@ let provide = [
 ];
 
 let runtime = run(
-  new 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- ,provide.concat([0,1,2,32,3,8,Infinity,-Infinity,-1])
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+  new 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+ ,provide.concat([0,1,2,32,3,8,Infinity,-Infinity,-1,str("Argument to fold must be a list"),str("Equal-rank argument shapes don't agree"),str("Argument shape prefixes don't agree"),str("Grade argument must have rank at least 1"),str("Replication argument in Indices or Replicate must have rank 1"),str("Amounts to replicate must be natural numbers"),str("Right argument to Select must be an array"),str("Indices in Select must be integers"),str("Select indices out of range"),str("Reverse argument must have rank at least 1"),str("Amount to rotate must be an integer"),str("Elements in Merge argument must have matching shapes"),str("No monadic form: ≥"),str("No monadic form: ≤"),str("Identity not found"),str("Shape argument to Reshape must have rank at most 1"),str("Shape in Reshape must consist of natural numbers"),str("Range argument must consist of natural numbers"),str("Range argument must be a number or list"),str("Insert argument must have rank at least 1"),str("First-axis function right argument must have rank at least 1"),str("Left argument must have rank at most 1"),str("Left argument length must be at most right argument rank"),str("Rank of joined arguments must differ by at most 1"),str("Cell shapes of joined arguments must match"),str("Left argument to Take or Drop must be an integer"),str("Prefixes argument must have rank at least 1"),str("Suffixes argument must have rank at least 1"),str("Windows right argument must be an array"),str("Windows left argument must have rank at most 1"),str("Windows left argument length must be at most right argument rank"),str("Windows left argument must consist of natural numbers"),str("Window length must be at most axis length plus one"),str("Replicate argument lengths must match"),str("Join argument must be an array"),str("Join argument elements must all have the same rank"),str("Join argument element rank must be at least argument rank"),str("Join argument element shapes must be compatible"),str("Grouping argument must be a list"),str("Grouping argument must consist of integers"),str("Grouping argument values cannot be less than ¯1"),str("Group Indices argument must be an array"),str("Group right argument must be an array"),str("Group left argument must consist of lists"),str("Group left argument length must be at most right argument rank"),str("Group argument lengths must be compatible"),str("Indices in compound Pick must be lists"),str("Pick index length must match right argument rank"),str("Pick indices must consist of integers"),str("Pick index out of range"),str("Bins argument must have rank at least 1"),str("Bins right argument rank is too small"),str("Bins left argument must be sorted"),str("Search principal argument must have rank at least 1"),str("Unique mask argument must have rank at least 1"),str("Find left argument rank cannot exceed right argument rank"),str("No monadic form: ⊐"),str("Left argument to Reorder Axes must have rank at most 1"),str("Reorder Axes left argument length must not exceed right argument rank"),str("Reorder Axes left argument must consist of natural numbers"),str("No such axis in Reorder Axes"),str("Inverse failed"),str("Inverse not found"),str("Repetition numbers must be integers")])
+ ,[[0,1,0,126],[2,0,2541,6],[0,0,2568,3],[0,0,2572,3],[0,0,2576,3],[1,0,2580,5],[2,0,2598,6],[2,0,2613,6],[2,0,2632,6],[2,0,2654,6],[2,0,2676,6],[0,0,2708,3],[0,0,2719,3],[0,0,2728,3],[1,0,2737,9],[0,0,2850,3],[0,0,2890,4],[1,1,2966,4],[1,1,3039,3],[0,0,3103,3],[0,0,3114,5],[2,0,3198,12],[0,0,3404,4],[0,0,3453,6],[0,0,3543,4],[0,0,3699,4],[0,0,3760,4],[2,0,3862,16],[1,1,4092,2],[0,0,4116,3],[0,0,4143,3],[0,0,4169,3],[0,0,4208,4],[0,0,4305,3],[0,0,4332,3],[0,0,4354,3],[0,0,4376,3],[0,0,4387,3],[0,0,4416,3],[0,0,4422,5],[0,0,4540,5],[0,0,4573,3],[0,0,4582,3],[1,1,4588,2],[2,0,4657,10],[2,0,4716,8],[1,1,4903,2],[1,0,4913,5],[2,1,4955,4],[0,0,4991,8],[0,0,5227,4],[0,0,5308,3],[0,0,5358,4],[0,0,5479,3],[0,0,5529,4],[0,0,5695,3],[0,0,5713,3],[0,0,5747,3],[0,0,5761,7],[0,0,5808,11],[1,0,6073,8],[0,0,6191,4],[0,0,6275,5],[0,0,6434,4],[0,0,6647,3],[0,0,6665,4],[1,0,6737,9],[1,1,6806,3],[1,0,6830,14],[1,1,7264,4],[0,0,7313,4],[0,0,7454,4],[0,0,7522,4],[0,0,7791,3],[2,0,7831,6],[0,0,7859,3],[0,0,7896,3],[0,0,7983,3],[1,1,8038,2],[2,0,8046,13],[1,1,8197,2],[1,1,8211,2],[1,1,8215,2],[0,0,8219,3],[0,0,8231,3],[0,0,8254,3],[1,0,8275,6],[1,0,8392,11],[1,0,8613,5],[0,0,8628,3],[0,0,8642,3],[0,0,8656,3],[1,0,8701,8],[0,0,8839,8],[0,0,9006,5],[0,0,9081,3],[0,0,9098,3],[0,0,9104,4],[0,0,9153,3],[1,0,9163,5],[0,0,9174,3],[0,0,9220,3],[0,0,9240,3],[1,0,9294,6],[0,0,9447,6],[0,0,9575,3],[0,0,9605,5],[0,0,9704,10],[0,0,9889,3],[0,0,9989,3],[0,0,10031,3],[0,0,10084,4],[0,0,10144,3],[0,0,10175,3],[0,0,10205,3],[0,0,10323,6],[0,0,10430,6],[0,0,10480,4],[0,0,10510,3],[0,0,10529,4],[1,1,10687,2],[0,0,10691,3],[1,0,10734,5],[1,0,10771,5],[1,0,10782,5],[0,0,10793,14],[0,0,10969,3],[0,0,10990,3],[0,0,11014,3],[0,0,11070,4],[1,0,11130,5],[0,0,11197,3],[0,0,11226,3],[0,0,11243,5],[0,0,11354,3],[0,0,11409,3],[0,0,11433,5],[0,0,11562,3],[0,0,11602,3],[0,0,11685,3],[0,0,11719,3],[0,0,11748,3],[0,0,11766,3],[0,0,11783,3],[0,0,11812,3],[0,0,11855,6],[0,0,11934,3]]
 );
 
 // Compiler
diff --git a/src/pr.bqn b/src/pr.bqn
index a93bd4eb..4c789a3c 100755
--- a/src/pr.bqn
+++ b/src/pr.bqn
@@ -34,7 +34,7 @@ names ↩ (⥊¨kt⊏chr)⌾(ki⊸⊏)names
 E_isdef ← (3≤≠)◶⟨0,∧´⟨chr," ","←↩"⟩∊˜¨3⊸↑⟩
 E_proc ← ({𝕨∘𝕩}´ {𝕨•_R_𝕩}⟜⥊¨⟜(≠↑chr˜) def)∘{
   l←≠chr
-  q←≠`𝕩∊"""'" ⋄ f←¬∨`q¬⊸∧𝕩='#'
+  q←≠`𝕩='"' ⋄ q∨↩≠`q<𝕩=''' ⋄ f←¬∨`q<𝕩='#'
   ∾ (((l×f/q)+chr⊸⊐) (≥⟜l)◶⟨⊑⟜names,⥊∘⊢⟩¨ ⊢) f/𝕩
 }
 E_redef ← { # handles [fmd] [←↩]
diff --git a/src/r.bqn b/src/r.bqn
index 60a2ba0f..c61034ae 100644
--- a/src/r.bqn
+++ b/src/r.bqn
@@ -22,7 +22,7 @@ Nat←IsArray◶⟨0⊸≤×⌊⊸=,0⟩
 ≠ ← (0<=)◶⟨1⋄0⊑≢⟩  # LIMITED to monadic case
 
 _fold←{
-  ! 1==𝕩
+  "Argument to fold must be a list" ! 1==𝕩
   l←≠v←𝕩 ⋄ F←𝔽
   r←𝕨 (0<l)◶{𝕩⋄Identity f}‿{l↩l-1⋄l⊑𝕩}⊘⊣ 𝕩
   {r↩(𝕩⊑v)F r}⌜(l-1)⊸-⌜↕l
@@ -38,12 +38,12 @@ Cell←{(𝕨⊸+⊑𝕩˜)⌜↕(≠𝕩)-𝕨}⟜≢
 _eachd←{
   _d←{ # Equal ranks
     p←≢𝕨
-    ! 1(⊑⟜p=⊑⟜(≢𝕩))⊸×´↕=𝕨
+    "Equal-rank argument shapes don't agree" ! 1(⊑⟜p=⊑⟜(≢𝕩))⊸×´↕=𝕨
     p⥊ (⊑⟜(⥊𝕨)𝔽⊑⟜(⥊𝕩))⌜↕1×´p
   }
   _e←{ # 𝕨 has smaller or equal rank
     p←≢𝕨 ⋄ k←=𝕨 ⋄ q←≢𝕩
-    ! 1(⊑⟜p=⊑⟜q)⊸×´↕k
+    "Argument shape prefixes don't agree" ! 1(⊑⟜p=⊑⟜q)⊸×´↕k
     l←1(q⊑˜k⊸+)⊸×´↕(=𝕩)-k
     a←⥊𝕨 ⋄ b←⥊𝕩
     q⥊⥊(≠a) (⊑⟜a𝔽l⊸×⊸+⊑b˜)⌜○↕ l
@@ -68,7 +68,7 @@ Cmp ← +○IsArray◶⟨
   }
 ⟩
 _grade_←{
-  ! 1≤=𝕩
+  "Grade argument must have rank at least 1" ! 1≤=𝕩
   l←≠𝕩
   m←1×´1 Cell 𝕩
   d←⥊𝕩
@@ -90,10 +90,10 @@ _grade_←{
 }
 
 Indices←{
-  ! 1==𝕩
+  "Replication argument in Indices or Replicate must have rank 1" ! 1==𝕩
   l←≠𝕩
   {
-    ! 1×´Nat⌜𝕩
+    "Amounts to replicate must be natural numbers" ! 1×´Nat⌜𝕩
     k←l-1
     N ← ((⊢+-×0=𝕩⊑˜⊢)`k⊸-⌜↕l)⊑˜k-⊢  # Next nonzero
     E ← ⊑⟜(+`𝕩)
@@ -108,10 +108,10 @@ Transpose←{
 }⍟(0<=)
 
 SelSub←{
-  ! IsArray 𝕨
-  ! 1×´⥊Int⌜ 𝕨
+  "Right argument to Select must be an array" ! IsArray 𝕨
+  "Indices in Select must be integers" ! 1×´⥊Int⌜ 𝕨
   l←≠𝕩
-  ! 1×´⥊ ((-l)⊸≤×l⊸>)⌜ 𝕨
+  "Select indices out of range" ! 1×´⥊ ((-l)⊸≤×l⊸>)⌜ 𝕨
   ((⊢+l×0>⊢)⌜𝕨)(1==𝕩)◶{
     c←1×´s←1 Cell 𝕩
     𝕨((⥊𝕩)⊑˜c⊸×⊸+)⌜s⥊↕c
@@ -120,8 +120,15 @@ SelSub←{
   }𝕩
 }
 
-Reverse ← {!1≤=𝕩 ⋄ l←≠𝕩 ⋄ ((l-1)⊸-⌜↕l) Select 𝕩}
-Rot ← {!Int𝕨 ⋄ l←≠𝕩 ⋄ 𝕨-↩l×⌊𝕨÷l ⋄ ((𝕨+⊢-l×(l-𝕨)≤⊢)⌜↕l) Select 𝕩}
+Reverse ← {
+  "Reverse argument must have rank at least 1" ! 1≤=𝕩
+  l←≠𝕩
+  ((l-1)⊸-⌜↕l) Select 𝕩
+}
+Rot ← {
+  "Amount to rotate must be an integer" ! Int𝕨
+  l←≠𝕩 ⋄ 𝕨-↩l×⌊𝕨÷l ⋄ ((𝕨+⊢-l×(l-𝕨)≤⊢)⌜↕l) Select 𝕩
+}
 
 _under_←{
   i←↕l←1×´s←≢𝕩
@@ -149,7 +156,7 @@ Depth←IsArray◶0‿{1+0(⊣-≤×-)´Depth⌜⥊𝕩}
 
 Merge←{
   c←≢0⊑⥊𝕩
-  ! 1×´(c≡≢)⌜⥊𝕩
+  "Elements in Merge argument must have matching shapes" ! 1×´(c≡≢)⌜⥊𝕩
   𝕩⊑⟜Deshape˜⌜c⥊↕1×´c
 }⍟(0<≠∘⥊)⍟IsArray
 
@@ -166,18 +173,18 @@ Merge←{
 > ↩ Merge    ⊘ ((1-≤) _perv)
 ≠ ↩ ≠        ⊘ ((1-=) _perv)
 = ↩ =        ⊘ (= _perv)
-≥ ← !∘0      ⊘ (≤˜_perv)
-≤ ↩ !∘0      ⊘ (≤ _perv)
+≥ ← ("No monadic form: ≥"!0˜) ⊘ (≤˜_perv)
+≤ ↩ ("No monadic form: ≤"!0˜) ⊘ (≤ _perv)
 + ↩ + _perv
 - ↩ - _perv
 ¬ ← 1+-
-identity ← (0⊑⟨!∘0⟩) {(0⊑𝕨){𝕗=𝕩}◶𝕩‿(1⊑𝕨)}´ ⟨+‿0,-‿0,×‿1,÷‿1,⋆‿1,√‿1,∧‿1,∨‿0,|‿0,⌊‿∞,⌈‿¯∞,<‿0,≤‿1,=‿1,≥‿1,>‿0,≠‿0⟩
+identity ← (0⊑⟨"Identity not found"!0˜⟩) {(0⊑𝕨){𝕗=𝕩}◶𝕩‿(1⊑𝕨)}´ ⟨+‿0,-‿0,×‿1,÷‿1,⋆‿1,√‿1,∧‿1,∨‿0,|‿0,⌊‿∞,⌈‿¯∞,<‿0,≤‿1,=‿1,≥‿1,>‿0,≠‿0⟩
 
 Deshape←IsArray◶{⟨𝕩⟩}‿⥊
 Reshape←{
-  ! 1≥=𝕨
+  "Shape argument to Reshape must have rank at most 1" ! 1≥=𝕨
   𝕨↩Deshape 𝕨
-  ! ∧´Nat⌜𝕨
+  "Shape in Reshape must consist of natural numbers" ! ∧´Nat⌜𝕨
   l←×´𝕨
   n←×´≢𝕩
   𝕨⥊{
@@ -187,8 +194,8 @@ Reshape←{
 ⥊ ↩ Deshape        ⊘ ⥊
 
 Range←{
-  I←{!Nat𝕩⋄↕𝕩}
-  M←{!1==𝕩⋄(<⟨⟩)⥊⊸∾⌜´I⌜𝕩}
+  I←{"Range argument must consist of natural numbers"!Nat𝕩⋄↕𝕩}
+  M←{"Range argument must be a number or list"!1==𝕩⋄(<⟨⟩)⥊⊸∾⌜´I⌜𝕩}
   IsArray◶I‿M 𝕩
 }
 
@@ -219,7 +226,7 @@ _rankOp_←{
 ⎉ ← _rankOp_
 ˘ ← {𝔽⎉¯1}
 _insert←{
-  ! 1≤=𝕩
+  "Insert argument must have rank at least 1" ! 1≤=𝕩
   𝕨 𝔽´ <˘𝕩
 }
 ˝ ← _insert
@@ -228,11 +235,11 @@ _insert←{
 _onAxes_←{
   F←𝔽
   (𝔾<≡)∘⊣◶{ # One axis
-    ! 1≤=𝕩
+    "First-axis function right argument must have rank at least 1" ! 1≤=𝕩
     𝕨F𝕩
   }‿{ # Multiple axes
-    ! 1≥=𝕨
-    ! 𝕨≤○≠≢𝕩
+    "Left argument must have rank at most 1" ! 1≥=𝕨
+    "Left argument length must be at most right argument rank" ! 𝕨≤○≠≢𝕩
     l←≠𝕨 ⋄ W←⊑⟜(⥊𝕨)
     0{(W𝕨)F(1+𝕨)⊸𝕊˘⍟(𝕨<l-1)𝕩}⍟(0<l)𝕩
   }
@@ -244,43 +251,43 @@ Select←ToArray⊸(SelSub _onAxes_ 1)
 JoinTo←∨○(1<=)◶(∾○⥊)‿{
   s←𝕨Pair○≢𝕩
   a←1⌈´k←≠⌜s
-  ! ∧´1≥a-k
+  "Rank of joined arguments must differ by at most 1" ! ∧´1≥a-k
   c←(k¬a)+⟜(↕a-1)⊸⊏¨s
-  ! ≡´c
+  "Cell shapes of joined arguments must match" ! ≡´c
   l←+´(a=k)⊣◶1‿(0⊑⊢)¨s
   (⟨l⟩∾0⊑c)⥊𝕨∾○⥊𝕩
 }
 
 Take←{
   T←{
-    ! Int 𝕨
+    "Left argument to Take or Drop must be an integer" ! Int 𝕨
     l←≠𝕩 ⋄ n←𝕨<0 ⋄ e←l⌊r←|𝕨 ⋄ s←⟨r⟩ ⋄ m←1
     i ← 𝕩{s∾↩c←1 Cell 𝕨⋄𝕩(×+⌜↕∘⊢)m↩×´c}⍟(1≠=𝕩) (l-e)+⍟n ↕e
     s⥊𝕩{(⥊𝕩)n◶⟨∾,∾˜⟩(0⊑⥊Type𝕗)⌜↕m×r-e}⍟(l<r) ⊑⟜(⥊𝕩)⌜i
   }
   𝕨 T _onAxes_ 0 ((1⌜∘↕0⌈𝕨-○≠⊢)⊸∾∘≢⥊⥊) 𝕩
 }
-Prefixes ← {!1≤=𝕩 ⋄ Take⟜𝕩⌜↕1+≠𝕩}
+Prefixes ← {"Prefixes argument must have rank at least 1"!1≤=𝕩 ⋄ Take⟜𝕩⌜↕1+≠𝕩}
 ↑ ← Prefixes       ⊘ Take
 Drop←{
   s←(≠𝕨)(⊣↑⊢∾˜·1⌜∘↕0⌈-⟜≠)≢𝕩
   ((s×¯1⋆𝕨>0)+(-s)⌈s⌊𝕨)↑𝕩
 }
-Suffixes ← {!1≤=𝕩 ⋄ Drop⟜𝕩⌜↕1+≠𝕩}
+Suffixes ← {"Suffixes argument must have rank at least 1"!1≤=𝕩 ⋄ Drop⟜𝕩⌜↕1+≠𝕩}
 ↓ ← Suffixes       ⊘ Drop
 
 Windows←{
-  ! IsArray 𝕩
-  ! 1≥=𝕨
-  ! 𝕨≤○≠≢𝕩
-  ! ∧´Nat⌜⥊𝕨
+  "Windows right argument must be an array" ! IsArray 𝕩
+  "Windows left argument must have rank at most 1" ! 1≥=𝕨
+  "Windows left argument length must be at most right argument rank" ! 𝕨≤○≠≢𝕩
+  "Windows left argument must consist of natural numbers" ! ∧´Nat⌜⥊𝕨
   s←(≠𝕨)↑≢𝕩
-  ! ∧´𝕨≤1+s
+  "Window length must be at most axis length plus one" ! ∧´𝕨≤1+s
   𝕨{(∾⟜(𝕨≠⊸↓≢𝕩)∘≢⥊>)<⌜⊸⊏⟜𝕩¨s(¬+⌜○Range⊢)⥊𝕨}⍟(0<≠𝕨)𝕩
 }
 
 Rep ← Indices⊸⊏
-Replicate ← {0<=𝕨}◶{𝕨⌜⊸Rep𝕩}‿{!𝕨=○≠𝕩⋄𝕨Rep𝕩} _onAxes_ (1-0=≠)
+Replicate ← {0<=𝕨}◶{𝕨⌜⊸Rep𝕩}‿{"Replicate argument lengths must match"!𝕨=○≠𝕩⋄𝕨Rep𝕩} _onAxes_ (1-0=≠)
 
 ↕ ↩ Range          ⊘ Windows
 ⌽ ← Reverse        ⊘ (Rot _onAxes_ 0)
@@ -293,33 +300,35 @@ Join←(1≠=)◶⟨∨´1≠=⌜,1⟩◶{
 }‿{
   # Multidimensional
   C←(<⟨⟩)⥊⊸∾⌜´⊢  # Cartesian array product
-  ! IsArray 𝕩
+  "Join argument must be an array" ! IsArray 𝕩
   s←≢⌜𝕩
   d←≠0⊑⥊s
-  ! ∧´⥊d=≠⌜s
-  ! d≥=𝕩
+  "Join argument elements must all have the same rank" ! ∧´⥊d=≠⌜s
+  "Join argument element rank must be at least argument rank" ! d≥=𝕩
   l←(≢𝕩){(𝕩⊑⟜≢a Pick1˜(j=𝕩)⊸×)⌜↕𝕨}¨j←↕r←=a←𝕩
-  ! (r⊸↑⌜s)≡C l
+  "Join argument element shapes must be compatible" ! (r⊸↑⌜s)≡C l
   i←C{p←+´⌜↑𝕩⋄(↕0⊑⌽p)-𝕩/¯1↓p}⌜l
   >i<⌜⊸⊏¨l/𝕩
 }⍟(0<≠∘⥊)
 
 _group←{
-  !1==𝕩⋄!∧´Int⌜𝕩⋄!∧´¯1≤𝕩
+  "Grouping argument must be a list" ! 1==𝕩
+  "Grouping argument must consist of integers" ! ∧´Int⌜𝕩
+  "Grouping argument values cannot be less than ¯1" ! ∧´¯1≤𝕩
   d←(l←GroupLen𝕩)GroupOrd𝕩
   i←0⋄(𝔽{𝕩⋄(i↩i+1)⊢i⊑d}⌜∘↕)⌜l
 }
 GroupInds←{
-  ! IsArray 𝕩
+  "Group Indices argument must be an array" ! IsArray 𝕩
   G←⊢_group
   (1<≡)◶G‿((<<⟨⟩)⥊⊸∾⌜⌜´G⌜)𝕩
 }
 GroupGen←{
-  ! IsArray 𝕩
+  "Group right argument must be an array" ! IsArray 𝕩
   m←1<≡𝕨
-  l←m◶≠‿{!1==𝕩⋄≠⌜𝕩}𝕨
-  ! l≤○≠≢𝕩
-  ! ∧´l=l≠⊸↑≢𝕩
+  l←m◶≠‿{"Group left argument must consist of lists"!1==𝕩⋄≠⌜𝕩}𝕨
+  "Group left argument length must be at most right argument rank" ! l≤○≠≢𝕩
+  "Group argument lengths must be compatible" ! ∧´l=l≠⊸↑≢𝕩
   𝕨m◶(⊏⟜𝕩_group⊣)‿{
     ⊏⟜(𝕩⥊˜⟨×´l⟩∾(≠l)Cell𝕩)⌜ +⌜⌜´ (⌽×`⟨1⟩∾⌽1↓l) × ⊢_group⌜𝕨
   }𝕩
@@ -329,10 +338,10 @@ GroupGen←{
 ⊔ ← GroupInds      ⊘ GroupGen
 
 Pick1←{
-  ! 1==𝕨
-  ! 𝕨=○≠s←≢𝕩
-  ! ∧´Int⌜𝕨
-  ! ∧´𝕨(≥⟜-∧<)s
+  "Indices in compound Pick must be lists" ! 1==𝕨
+  "Pick index length must match right argument rank" ! 𝕨=○≠s←≢𝕩
+  "Pick indices must consist of integers" ! ∧´Int⌜𝕨
+  "Pick index out of range" ! ∧´𝕨(≥⟜-∧<)s
   𝕨↩𝕨+s×𝕨<0
   (⥊𝕩)⊑˜0(⊑⟜𝕨+⊑⟜s×⊢)´-↕⊸¬≠𝕨
 }
@@ -373,11 +382,11 @@ _binSearch ← {
 }
 _bins←{
   c←1-˜=𝕨
-  ! 0≤c
-  ! c≤=𝕩
+  "Bins argument must have rank at least 1" ! 0≤c
+  "Bins right argument rank is too small" ! c≤=𝕩
   lw←×´sw←1 Cell 𝕨
   cw←lw 𝔽○(⊑⟜(⥊𝕨)) _getCellCmp 0
-  ! 0⊸<◶⟨1,∧´0≤˜·cw⟜(lw⊸+)⌜lw×↕∘-⟜1⟩≠𝕨
+  "Bins left argument must be sorted" ! 0⊸<◶⟨1,∧´0≤˜·cw⟜(lw⊸+)⌜lw×↕∘-⟜1⟩≠𝕨
   cx←c-˜=𝕩
   sx←cx Cell 𝕩 ⋄ lc←sw CmpLen sx
   cc ← (⊑⟜(⥊𝕨))⊸𝔽⟜(⊑⟜(⥊𝕩)) _getCellCmp´ lc
@@ -394,7 +403,7 @@ _search←{ # 0 for ∊˜, 1 for ⊐
   red ← 𝕗⊑⟨¬∧˝,+˝∧`⟩
   {
     c←1-˜=𝕨
-    ! 0≤c
+    "Search principal argument must have rank at least 1" ! 0≤c
     𝕨 ∧○(8<≠∘⥊)◶⟨
       (0<≠𝕨)◶⟨0⎉c∘⊢, Red≢⌜○((0<c)◶⟨⊢,<⎉c⟩)⟩
       { g←⌽⍒𝕨 ⋄ i←g⊏˜0⌈1-˜(g⊏𝕨)⍋𝕩 ⋄ (≠𝕨)(⊣+i⊸-⊸×)⍟ind(i⊏𝕨)≡⎉c𝕩 }
@@ -402,28 +411,28 @@ _search←{ # 0 for ∊˜, 1 for ⊐
   }
 }
 UniqueMask←{
-  ! 1≤=𝕩
+  "Unique mask argument must have rank at least 1" ! 1≤=𝕩
   g←⍋𝕩
   (1¨⊸GroupOrd g)⊏0⊸<◶⟨1,-⟜1≢○(⊑⟜(g⊏<˘⍟(1<=)𝕩))⊢⟩⌜↕≠𝕩
 }
 Find←{
   r←=𝕨
-  ! r≤=𝕩
+  "Find left argument rank cannot exceed right argument rank" ! r≤=𝕩
   𝕨 ≡⎉r (≢𝕨) ↕⎉r 𝕩
 }
 
-⊐ ← !∘0            ⊘ (1 _search)
+⊐ ← ("No monadic form: ⊐"!0˜) ⊘ (1 _search)
 ∊ ← UniqueMask     ⊘ (0 _search˜)
 ⍷ ← ∊⊸/            ⊘ Find
 
 ReorderAxes←{
   𝕩↩<⍟(0=≡)𝕩
-  ! 1≥=𝕨
+  "Left argument to Reorder Axes must have rank at most 1" ! 1≥=𝕨
   𝕨↩⥊𝕨
-  ! 𝕨≤○≠≢𝕩
-  ! ∧´Nat⌜⥊𝕨
+  "Reorder Axes left argument length must not exceed right argument rank" ! 𝕨≤○≠≢𝕩
+  "Reorder Axes left argument must consist of natural numbers" ! ∧´Nat⌜⥊𝕨
   r←(=𝕩)-+´¬∊𝕨
-  ! ∧´𝕨<r
+  "No such axis in Reorder Axes" ! ∧´𝕨<r
   𝕨↩𝕨∾𝕨(¬∘∊˜/⊢)↕r
   (𝕨⊸⊏Pick𝕩˜)⌜↕⌊´⌜𝕨⊔≢𝕩
 }
@@ -436,7 +445,8 @@ ProgressiveIndexOf ← {𝕨⊐○(≍˘⟜OccurrenceCount𝕨⊸⊐)𝕩}
 ⊑ ↩ (0⊑⥊)          ⊘ Pick
 ◶ ↩ {𝕨((𝕨𝔽𝕩)⊑𝕘){𝔽}𝕩}  # Same definition, new Pick
 
-inverse ← {(⊑(0⊏𝕩)⊐<) ⊑ ((1⊏𝕩)∾⟨!∘0⟩)˜} ⍉ (2∾˜2÷˜≠)⊸⥊ ⟨
+IA ← "Inverse failed"⊸!
+inverse ← {(⊑(0⊏𝕩)⊐<) ⊑ ((1⊏𝕩)∾⟨"Inverse not found"!0˜⟩)˜} ⍉ (2∾˜2÷˜≠)⊸⥊ ⟨
   +, +⊘(-˜)
   -, -
   ×, ⊢⊘(÷˜)
@@ -445,15 +455,15 @@ inverse ← {(⊑(0⊏𝕩)⊐<) ⊑ ((1⊏𝕩)∾⟨!∘0⟩)˜} ⍉ (2∾˜2�
   √, ⋆⟜2⊘(⋆˜)
   ∧, ⊢⊘(÷˜)
   ∨, ⊢⊘(-˜÷1-⊢)
-  <, {!IsArray𝕩⋄!0==𝕩⋄⊑𝕩}⊘(!∘0)
-  /, {!1==𝕩⋄!∧´Nat⌜𝕩⋄!(∧´¯1⊸↓≤1⊸↓)𝕩⋄GroupLen𝕩}⊘(!∘0)
+  <, {IA IsArray𝕩⋄IA 0==𝕩⋄⊑𝕩}⊘(IA∘0)
+  /, {IA 1==𝕩⋄IA∧´Nat⌜𝕩⋄IA(∧´¯1⊸↓≤1⊸↓)𝕩⋄GroupLen𝕩}⊘(IA∘0)
 ⟩
 ⁼ ← {Inverse 𝕗}
 
 _repeat_←{
   n←𝕨𝔾𝕩
   l←u←0
-  {!Int𝕩⋄l↩l⌊𝕩⋄u↩u⌈𝕩}⚇0 n
+  {"Repetition numbers must be integers"!Int𝕩⋄l↩l⌊𝕩⋄u↩u⌈𝕩}⚇0 n
   a←𝕩⋄_p←{𝔽∘⊣`⟨a⟩∾↕0+𝕩}
   pos←(𝕨𝔽 ⊢)_p u
   neg←(𝕨𝔽⁼⊢)_p-l
author	Marshall Lochbaum <mwlochbaum@gmail.com>	2020-08-14 12:10:47 -0400
committer	Marshall Lochbaum <mwlochbaum@gmail.com>	2020-08-14 13:53:18 -0400
commit	1c23dbb833410b2638fdb3b2b0fef083b87ab670 (patch)
tree	6d08ed6aac4c89f2c5f2307715f405a028f70559
parent	fbed5613ace02a2edc54ffc3dfea614526871ffc (diff)