From 0abd5bd3c0e38e352e9ba38268e04e1c858ab01e Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Thu, 15 Jul 2021 00:45:15 -0400
Subject: Re-named "spec" hierarchy to "specification".

---
 .../compositor/generation/structure.lux            | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 stdlib/source/specification/compositor/generation/structure.lux

(limited to 'stdlib/source/specification/compositor/generation/structure.lux')

diff --git a/stdlib/source/specification/compositor/generation/structure.lux b/stdlib/source/specification/compositor/generation/structure.lux
new file mode 100644
index 000000000..7c45d2a9b
--- /dev/null
+++ b/stdlib/source/specification/compositor/generation/structure.lux
@@ -0,0 +1,89 @@
+(.module:
+  [lux #*
+   ["_" test (#+ Test)]
+   [abstract
+    [monad (#+ do)]]
+   [control
+    [pipe (#+ case>)]
+    ["." try]]
+   [data
+    ["." maybe]
+    [number
+     ["n" nat]
+     ["i" int]]
+    ["." text ("#\." equivalence)
+     ["%" format (#+ format)]]
+    [collection
+     ["." array (#+ Array)]
+     ["." list ("#\." functor)]]]
+   [math
+    ["r" random]]
+   ["." ffi (#+ import:)]
+   [tool
+    [compiler
+     ["." analysis]
+     ["." synthesis]]]]
+  [///
+   [common (#+ Runner)]])
+
+(import: java/lang/Integer)
+
+(def: (variant run)
+  (-> Runner Test)
+  (do {! r.monad}
+    [num-tags (|> r.nat (\ ! map (|>> (n.% 10) (n.max 2))))
+     tag-in (|> r.nat (\ ! map (n.% num-tags)))
+     #let [last?-in (|> num-tags dec (n.= tag-in))]
+     value-in r.i64]
+    (_.test (%.name (name-of synthesis.variant))
+            (|> (synthesis.variant {#analysis.lefts (if last?-in
+                                                      (dec tag-in)
+                                                      tag-in)
+                                    #analysis.right? last?-in
+                                    #analysis.value (synthesis.i64 value-in)})
+                (run "variant")
+                (case> (#try.Success valueT)
+                       (let [valueT (:as (Array Any) valueT)]
+                         (and (n.= 3 (array.size valueT))
+                              (let [tag-out (:as java/lang/Integer (maybe.assume (array.read 0 valueT)))
+                                    last?-out (array.read 1 valueT)
+                                    value-out (:as Any (maybe.assume (array.read 2 valueT)))
+                                    same-tag? (|> tag-out ffi.int-to-long (:as Nat) (n.= tag-in))
+                                    same-flag? (case last?-out
+                                                 (#.Some last?-out')
+                                                 (and last?-in (text\= "" (:as Text last?-out')))
+
+                                                 #.None
+                                                 (not last?-in))
+                                    same-value? (|> value-out (:as Int) (i.= value-in))]
+                                (and same-tag?
+                                     same-flag?
+                                     same-value?))))
+
+                       (#try.Failure _)
+                       false)))))
+
+(def: (tuple run)
+  (-> Runner Test)
+  (do {! r.monad}
+    [size (|> r.nat (\ ! map (|>> (n.% 10) (n.max 2))))
+     tuple-in (r.list size r.i64)]
+    (_.test (%.name (name-of synthesis.tuple))
+            (|> (synthesis.tuple (list\map (|>> synthesis.i64) tuple-in))
+                (run "tuple")
+                (case> (#try.Success tuple-out)
+                       (let [tuple-out (:as (Array Any) tuple-out)]
+                         (and (n.= size (array.size tuple-out))
+                              (list.every? (function (_ [left right])
+                                             (i.= left (:as Int right)))
+                                           (list.zip/2 tuple-in (array.to-list tuple-out)))))
+
+                       (#try.Failure _)
+                       false)))))
+
+(def: #export (spec runner)
+  (-> Runner Test)
+  ($_ _.and
+      (..variant runner)
+      (..tuple runner)
+      ))
-- 
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