X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scl.runtime%2Fscl%2FIterator.scl;h=b98e14f423aaccb9252883be3d95c569833ce8bf;hp=be7fb90e06e7f7517486275bdfc7614b79a3551c;hb=e1b1c30f512d3c196c86c4a1f0eaf8b7dd461a9a;hpb=969bd23cab98a79ca9101af33334000879fb60c5

diff --git a/bundles/org.simantics.scl.runtime/scl/Iterator.scl b/bundles/org.simantics.scl.runtime/scl/Iterator.scl
index be7fb90e0..b98e14f42 100644
--- a/bundles/org.simantics.scl.runtime/scl/Iterator.scl
+++ b/bundles/org.simantics.scl.runtime/scl/Iterator.scl
@@ -1,3 +1,5 @@
+import "JavaBuiltin" as Java
+
 importJava "java.util.Iterator" where
     data T a
     
@@ -16,6 +18,17 @@ iter f it = loop ()
             loop ()
         else ()
 
+@inline
+iterI :: (Integer -> a -> <e> b) -> T a -> <Proc,e> ()
+iterI f it = loop 0
+  where
+    loop i = 
+        if hasNext it
+        then do
+            f i (next it)
+            loop (Java.iadd i 1)
+        else ()
+        
 @inline
 iterB :: (a -> <e> Boolean) -> T a -> <Proc,e> Boolean
 iterB f it = loop ()
@@ -27,6 +40,19 @@ iterB f it = loop ()
              else False
         else True
 
+@inline
+filter :: (a -> <e> Boolean) -> T a -> <Proc,e> ()
+filter f it = loop ()
+  where
+    loop _ = 
+        if hasNext it
+        then do
+            if f (next it)
+            then ()
+            else remove it
+            loop ()
+        else ()
+
 @inline
 mapFirst :: (a -> <e> Maybe b) -> T a -> <Proc,e> Maybe b
 mapFirst f it = loop ()