Intermediate changes

commit_hash:27af5f8a0a7836d78ffdc205213f07f79dd9f7ad

1 files changed, 63 insertions, 0 deletions

diff --git a/yql/essentials/tests/s-expressions/suites/InMem/Fold1MapOverPreservedStream.yqls b/yql/essentials/tests/s-expressions/suites/InMem/Fold1MapOverPreservedStream.yqls
new file mode 100644
index 0000000000..1a3aad97c9
--- /dev/null
+++ b/yql/essentials/tests/s-expressions/suites/InMem/Fold1MapOverPreservedStream.yqls
@@ -0,0 +1,63 @@
+(
+(let config (DataSource 'config))
+(let world (Configure! world config 'PureDataSource 'yt))
+
+(let res_sink (DataSink 'result))
+(let list (AsList
+    '((Uint32 '1) (String 'r))
+    '((Uint32 '1) (String 'a))
+    '((Uint32 '2) (String 'b))
+    '((Uint32 '3) (String 'b))
+    '((Uint32 '5) (String 'i))
+    '((Uint32 '8) (String 't))
+))
+(let base_stream (Iterator list))
+
+(let queue (QueueCreate (ListItemType (TypeOf list)) (Uint64 '5) (Uint64 '0)))
+#(let queue (QueueCreate (TupleType (DataType 'Uint32) (DataType 'String)) (Uint64 '5) (Uint64 '0)))
+(let stream (PreserveStream base_stream queue (Uint64 '2)))
+
+(let init (lambda '(item) (block '(
+    (let key (Nth item '0))
+    (let val (Nth item '1))
+    (let next (QueuePeek queue (Uint64 '1) (DependsOn item)))
+    (let over (QueuePeek queue (Uint64 '2) (DependsOn item)))
+    (let nkey (Nth next '0))
+    (let nval (Nth next '1))
+    (let okey (Nth over '0))
+    (let oval (Nth over '1))
+    (let skey key)
+    (let sval val)
+    (let validate (== (+ key (Coalesce nkey (Uint32 '0))) (Coalesce okey (Uint32 '0))))
+    (let words (Concat (Concat val (Coalesce nval (String '""))) (Coalesce oval (String '""))))
+    (let new_item '(key val skey sval validate words))
+    (let new_state '(skey sval))
+    (return '(new_item new_state)
+)))))
+
+(let update (lambda '(item state) (block '(
+    (let key (Nth item '0))
+    (let val (Nth item '1))
+    (let next (QueuePeek queue (Uint64 '1) (DependsOn item)))
+    (let over (QueuePeek queue (Uint64 '2) (DependsOn item)))
+    (let nkey (Nth next '0))
+    (let nval (Nth next '1))
+    (let okey (Nth over '0))
+    (let oval (Nth over '1))
+    (let skey (Nth state '0))
+    (let sval (Nth state '1))
+    (let skey (+ skey key))
+    (let sval (Concat sval val))
+    (let validate (== (+ key (Coalesce nkey (Uint32 '0))) (Coalesce okey (Uint32 '0))))
+    (let words (Concat (Concat val (Coalesce nval (String '""))) (Coalesce oval (String '""))))
+    (let new_item '(key val skey sval validate words))
+    (let new_state '(skey sval))
+    (return '(new_item new_state)
+)))))
+
+(let result (Fold1Map stream init update))
+
+(let world (Write! world res_sink (Key) (Collect result) '('('type))))
+(let world (Commit! world res_sink))
+(return world)
+)