1 module Pass_Mixed_Recursion =
3 (* Test that using a recursive lens as part of another lens works *)
5 let rec r = [ key "a" . r ] | [ key "a" . store "x" ]
7 (* Star a recursive lens *)
10 test star get "aax" = { "a" { "a" = "x" } }
11 test star put "aax" after rm "/nothing" = "aax"
13 test star get "axax" = { "a" = "x" } { "a" = "x" }
14 test star put "axaaxax" after rm "/a[2]" = "axax"
16 (* Use a starred recursive lens in a more complicated construct *)
17 let top = [ label "top" . r* . value "high" ]
19 test top get "axaax" = { "top" = "high" { "a" = "x" } { "a" { "a" = "x" } } }
20 test top put "axaax" after rm "/top/a[1]" = "aax"
22 (* Use a recursive lens in a union *)
23 let union = (r | [ key "b" . store /[a-z]/ ])*
25 test union get "aaxbyax" =
26 { "a" { "a" = "x" } } { "b" = "y" } { "a" = "x" }
27 test union put "aaxbyax" after
28 set "/b[2]" "z" = "aaxbyaxbz"
29 test union put "aaxbyax" after
30 set "/b[2]" "z"; rm "/b[1]" = "aaxaxbz"