X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=blobdiff_plain;f=src%2Fscheme-primitives.4th;h=dbb68bc63aa56f57386a9b9d7c96eadcd4558cff;hb=c775ab2562b213ac96fe1803d4e7001a73e874a8;hp=f94701f743c2d21222167450094cc8f6a4b8a7e2;hpb=899e3f7a10cbb8ecd03aa2dfe3ad08bf4638a324;p=scheme.forth.jl.git

diff --git a/src/scheme-primitives.4th b/src/scheme-primitives.4th
index f94701f..dbb68bc 100644
--- a/src/scheme-primitives.4th
+++ b/src/scheme-primitives.4th
@@ -607,13 +607,23 @@ defer display
     2swap apply
 ; make-primitive apply 
 
-: make-continuation
-  \ TODO: Capture parameter and return stacks in continuation
-;
-
-:noname ( args -- result )
-  make-continuation nil cons
-  2swap apply
+:noname ( proc -- result )
+    make-continuation
+
+    ( Note that we get to this point either when
+    make-continuation is originally called or when
+    restore-continuation is called.  Since we don't
+    want to call proc again following a restore,
+    we use the boolean values placed on the parameter
+    stack by make-continuation and restore-continuation
+    to detect which call got us here and act accordingly. )
+
+    drop if
+        nil cons
+        2swap apply
+    else
+        2swap 2drop
+    then
 
 ; 1 make-fa-primitive call-with-current-continuation