From 38e1f0bd01bae18cd8809a99ee42f46441161c87 Mon Sep 17 00:00:00 2001
From: "Kartik K. Agaram" <vc@akkartik.com>
Date: Sat, 27 Dec 2014 18:27:54 -0800
Subject: 451 - start of support for per-routine globals

---
 mu.arc   | 10 ++++++++++
 mu.arc.t | 23 +++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/mu.arc b/mu.arc
index 1cc77d43..f99b5d3a 100644
--- a/mu.arc
+++ b/mu.arc
@@ -731,6 +731,12 @@
         operand
       (pos '(raw) metadata.operand)
         operand
+      (is 'global (alref operand 'space))
+        (aif rep.routine*!globals
+          `((,(+ v.operand it) ,@(cdr operand.0))
+            ,@(rem [caris _ 'space] metadata.operand)
+            (raw))
+          (die "routine has no globals: @operand"))
       :else
         (iflet base rep.routine*!call-stack.0!default-scope
 ;?                (do (prn 313 " " operand " " base)
@@ -742,6 +748,10 @@
 ;?                 )
           operand)))
 
+(def space (operand)
+  (or (alref operand 'space)
+      0))
+
 (def deref (operand)
   (assert (pos '(deref) metadata.operand))
   (assert address?.operand)
diff --git a/mu.arc.t b/mu.arc.t
index 02c77535..0c40d069 100644
--- a/mu.arc.t
+++ b/mu.arc.t
@@ -3683,6 +3683,16 @@
                   (a:b <- op c:d e:f)
                 })))
 
+; space
+(prn "== space")
+(reset)
+(if (~iso 0 (space '((4 integer))))
+  (prn "F - 'space' is 0 by default"))
+(if (~iso 1 (space '((4 integer) (space 1))))
+  (prn "F - 'space' picks up space when available"))
+(if (~iso 'global (space '((4 integer) (space global))))
+  (prn "F - 'space' understands routine-global space"))
+
 ; absolutize
 (prn "== absolutize")
 (reset)
@@ -3702,6 +3712,12 @@
 (if (~iso '((_ integer)) (absolutize '((_ integer))))
   (prn "F - 'absolutize' passes dummy args right through"))
 
+(= memory*.20 5)  ; pretend array
+(= rep.routine*!globals 20)  ; provide it to routine global
+(if (~iso '((21 integer) (raw))
+          (absolutize '((1 integer) (space global))))
+  (prn "F - 'absolutize' handles variables in the global space"))
+
 ; deref
 (prn "== deref")
 (reset)
@@ -3874,6 +3890,13 @@
 (if (~iso (annotate 'record '(2 35 36)) (m '((3 integer-array-address) (deref))))
   (prn "F - 'm' supports indirect access to arrays"))
 
+(= routine* make-routine!foo)
+(= memory*.10 5)  ; fake array
+(= memory*.11 34)
+(= rep.routine*!globals 10)
+(if (~iso 34 (m '((1 integer) (space global))))
+  (prn "F - 'm' supports access to per-routine globals"))
+
 ; setm
 (prn "== setm")
 (reset)
-- 
cgit 1.4.1-2-gfad0