From 299908a885d00ec735070a937f9720410fe224a9 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Thu, 17 Oct 2019 20:07:19 -0400
Subject: Ported JVM pattern-matching & loop generation to the new JVM bytecode
 machinery.

---
 new-luxc/source/luxc/lang/translation/jvm/case.lux    | 12 +++++++++---
 new-luxc/source/luxc/lang/translation/jvm/loop.lux    |  8 ++++----
 new-luxc/source/luxc/lang/translation/jvm/runtime.lux |  9 ---------
 3 files changed, 13 insertions(+), 16 deletions(-)

(limited to 'new-luxc')

diff --git a/new-luxc/source/luxc/lang/translation/jvm/case.lux b/new-luxc/source/luxc/lang/translation/jvm/case.lux
index 484604323..7ea571450 100644
--- a/new-luxc/source/luxc/lang/translation/jvm/case.lux
+++ b/new-luxc/source/luxc/lang/translation/jvm/case.lux
@@ -39,17 +39,23 @@
 (def: peekI
   Inst
   (|>> _.DUP
-       runtime.peekI))
+       (_.int +0)
+       _.AALOAD))
 
 (def: pushI
   Inst
-  (|>> (_.INVOKESTATIC //.$Runtime "pm_push" (type.method [(list runtime.$Stack //.$Value) runtime.$Stack (list)]))))
+  (_.INVOKESTATIC //.$Runtime "pm_push" (type.method [(list runtime.$Stack //.$Value) runtime.$Stack (list)])))
+
+(def: popI
+  (|>> (_.int +1)
+       _.AALOAD
+       (_.CHECKCAST runtime.$Stack)))
 
 (def: (path' phase stack-depth @else @end path)
   (-> Phase Nat Label Label Path (Operation Inst))
   (.case path
     #synthesis.Pop
-    (operation@wrap runtime.popI)
+    (operation@wrap ..popI)
     
     (#synthesis.Bind register)
     (operation@wrap (|>> peekI
diff --git a/new-luxc/source/luxc/lang/translation/jvm/loop.lux b/new-luxc/source/luxc/lang/translation/jvm/loop.lux
index 5b4f981f6..bc5ca5b98 100644
--- a/new-luxc/source/luxc/lang/translation/jvm/loop.lux
+++ b/new-luxc/source/luxc/lang/translation/jvm/loop.lux
@@ -22,14 +22,14 @@
       ["_" inst]]]]]
   ["." //])
 
-(def: (constant? register changeS)
+(def: (invariant? register changeS)
   (-> Register Synthesis Bit)
   (case changeS
     (^ (synthesis.variable/local var))
     (n.= register var)
 
     _
-    #0))
+    false))
 
 (def: #export (recur translate argsS)
   (-> Phase (List Synthesis) (Operation Inst))
@@ -48,13 +48,13 @@
      ## should be the case.
      valuesI+ (monad.map @ (function (_ [register argS])
                              (: (Operation Inst)
-                                (if (constant? register argS)
+                                (if (invariant? register argS)
                                   (wrap function.identity)
                                   (translate argS))))
                          pairs)
      #let [storesI+ (list/map (function (_ [register argS])
                                 (: Inst
-                                   (if (constant? register argS)
+                                   (if (invariant? register argS)
                                      function.identity
                                      (_.ASTORE register))))
                               (list.reverse pairs))]]
diff --git a/new-luxc/source/luxc/lang/translation/jvm/runtime.lux b/new-luxc/source/luxc/lang/translation/jvm/runtime.lux
index c0e48f30d..ce271c4c9 100644
--- a/new-luxc/source/luxc/lang/translation/jvm/runtime.lux
+++ b/new-luxc/source/luxc/lang/translation/jvm/runtime.lux
@@ -132,15 +132,6 @@
                         (_.wrap type.double))))
        ))
 
-(def: #export popI
-  (|>> (_.int +1)
-       _.AALOAD
-       (_.CHECKCAST $Stack)))
-
-(def: #export peekI
-  (|>> (_.int +0)
-       _.AALOAD))
-
 (def: (illegal-state-exception message)
   (-> Text Inst)
   (let [IllegalStateException (type.class "java.lang.IllegalStateException" (list))]
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