X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=blobdiff_plain;f=scheme-primitives.4th;h=03d885bebd3cce1f9b02e4be224c4e020fbb9869;hb=9ad6e6f21fbbefe9e38bc6b4b8d2a78f8cbca229;hp=c99a0c000bc3ccc64a20e9298dcfec54d407a20c;hpb=8a9d83b586844a04f7ee19f98b56f460063bdcad;p=scheme.forth.jl.git

diff --git a/scheme-primitives.4th b/scheme-primitives.4th
index c99a0c0..03d885b 100644
--- a/scheme-primitives.4th
+++ b/scheme-primitives.4th
@@ -211,3 +211,95 @@
 
     mod fixnum-type
 ; make-primitive remainder
+
+:noname ( args -- bool )
+
+    2dup nil objeq? if
+        true boolean-type exit
+    then
+
+    ( args )
+
+    2dup car fixnum-type ensure-arg-type ( args arg0 )
+    2swap cdr ( arg0 args' )
+
+    2dup nil objeq? if
+        2drop 2drop
+        true boolean-type exit
+    then
+
+    ( arg0 args' )
+
+    begin
+        2dup nil objeq? false =
+    while
+        2dup car fixnum-type ensure-arg-type ( arg0 args' arg1 )
+        2rot 2dup 2rot ( args' arg0 arg0 arg1 )
+        objeq? false = if
+            2drop 2drop
+            false boolean-type exit
+        then
+
+        2swap cdr ( arg0 args'' )
+    repeat
+
+    2drop 2drop
+    true boolean-type
+; make-primitive =
+
+( = Pairs and Lists = )
+
+:noname ( args -- pair )
+    2dup 2 ensure-arg-count
+
+    2dup car 2swap cdr car
+    cons
+; make-primitive cons
+
+:noname ( args -- list )
+    \ args is already a list!
+; make-primitive list
+
+:noname ( args -- pair )
+    2dup 1 ensure-arg-count
+    car pair-type ensure-arg-type
+
+    car
+; make-primitive car
+
+:noname ( args -- pair )
+    2dup 1 ensure-arg-count
+    car pair-type ensure-arg-type
+
+    cdr
+; make-primitive cdr
+
+:noname ( args -- pair )
+    2dup 2 ensure-arg-count
+    2dup cdr car
+    2swap car pair-type ensure-arg-type
+
+    set-car!
+
+    ok-symbol
+; make-primitive set-car!
+
+:noname ( args -- pair )
+    2dup 2 ensure-arg-count
+    2dup cdr car
+    2swap car pair-type ensure-arg-type
+
+    set-cdr!
+
+    ok-symbol
+; make-primitive set-cdr!
+
+( = Polymorphic equality testing = )
+
+:noname ( args -- bool )
+    2dup 2 ensure-arg-count
+    2dup cdr car
+    2swap car
+
+    objeq? boolean-type
+; make-primitive eq?