From 269f576bf44e02dc78eb84bdef4f5fdb677ea041 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Wed, 15 Nov 2017 19:17:45 -0800
Subject: posq, posql, posqual, rposq, rposql, rposqual: rewrite

* lib.c (posq, posql, posqual, rposq, rposql, rposqual): These
functions are reduced to wrappers around pos and rpos,
respectively, so they generalize properly and efficiently
to sequences of all kinds.
---
 lib.c | 123 ++++++++++++++++--------------------------------------------------
 1 file changed, 30 insertions(+), 93 deletions(-)

(limited to 'lib.c')

diff --git a/lib.c b/lib.c
index c8704705..7ec6b1b2 100644
--- a/lib.c
+++ b/lib.c
@@ -8708,99 +8708,6 @@ val rfind_if(val predi, val seq, val key)
   return found;
 }
 
-val posqual(val obj, val list)
-{
-  val pos = zero;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (equal(car(list), obj))
-      return pos;
-
-  return nil;
-}
-
-val rposqual(val obj, val list)
-{
-  val pos = zero;
-  val found = nil;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (equal(car(list), obj))
-      found = pos;
-
-  return found;
-}
-
-val posql(val obj, val list)
-{
-  val pos = zero;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (eql(car(list), obj))
-      return pos;
-
-  return nil;
-}
-
-val rposql(val obj, val list)
-{
-  val pos = zero;
-  val found = nil;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (eql(car(list), obj))
-      pos = found;
-
-  return pos;
-}
-
-val posq(val obj, val list)
-{
-  val pos = zero;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (car(list) == obj)
-      return pos;
-
-  return nil;
-}
-
-val rposq(val obj, val list)
-{
-  val pos = zero;
-  val found = nil;
-
-  list = nullify(list);
-
-  gc_hint(list);
-
-  for (; list; list = cdr(list), pos = plus(pos, one))
-    if (car(list) == obj)
-      found = pos;
-
-  return found;
-}
-
 val pos(val item, val seq, val testfun, val keyfun)
 {
   testfun = default_arg(testfun, equal_f);
@@ -8921,6 +8828,36 @@ val rpos(val item, val seq, val testfun, val keyfun)
   }
 }
 
+val posqual(val obj, val list)
+{
+  return pos(obj, list, equal_f, identity_f);
+}
+
+val rposqual(val obj, val list)
+{
+  return rpos(obj, list, equal_f, identity_f);
+}
+
+val posql(val obj, val list)
+{
+  return pos(obj, list, eql_f, identity_f);
+}
+
+val rposql(val obj, val list)
+{
+  return rpos(obj, list, eql_f, identity_f);
+}
+
+val posq(val obj, val list)
+{
+  return pos(obj, list, eq_f, identity_f);
+}
+
+val rposq(val obj, val list)
+{
+  return rpos(obj, list, eq_f, identity_f);
+}
+
 val pos_if(val pred, val list, val key)
 {
   val pos = zero;
-- 
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