add std.reverse

databricks · Jun 12, 2023 · a425342 · a425342
1 parent 74d6ce3
commit a425342
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Showing 3 changed files with 12 additions and 1 deletion.
diff --git a/build.sc b/build.sc
@@ -1,5 +1,5 @@
 import mill._, scalalib._, publish._, scalajslib._, scalanativelib._, scalanativelib.api._
-val sjsonnetVersion = "0.4.5-RC3"
+val sjsonnetVersion = "0.4.5-RC4"
 
 object sjsonnet extends Cross[SjsonnetModule]("2.12.13", "2.13.4")
 class SjsonnetModule(val crossScalaVersion: String) extends Module {

diff --git a/sjsonnet/src/sjsonnet/Std.scala b/sjsonnet/src/sjsonnet/Std.scala
@@ -464,6 +464,11 @@ class Std {
       new Val.Arr(pos, out.toArray)
     }
   }
+  private object Reverse extends Val.Builtin1("arrs") {
+    def evalRhs(arrs: Val, ev: EvalScope, pos: Position): Val = {
+      new Val.Arr(pos, arrs.asArr.asLazyArray.reverse)
+    }
+  }
 
   private object Split extends Val.Builtin2("str", "c") {
     def evalRhs(_str: Val, _c: Val, ev: EvalScope, pos: Position): Val = {
@@ -946,6 +951,7 @@ class Std {
     },
 
     "flattenArrays" -> FlattenArrays,
+    "reverse" -> Reverse,
 
     builtin("manifestIni", "v"){ (pos, ev, v: Val) =>
       val materialized = Materializer(v)(ev)

diff --git a/sjsonnet/test/src/sjsonnet/Std0150FunctionsTests.scala b/sjsonnet/test/src/sjsonnet/Std0150FunctionsTests.scala
@@ -153,5 +153,10 @@ object Std0150FunctionsTests extends TestSuite {
       eval("""std.foldl(function (acc, it) acc + " " + it, "jsonnet", "this is")""") ==>
         ujson.Str("this is j s o n n e t")
     }
+    test("reverse"){
+      eval("""std.reverse([])""") ==> ujson.Arr()
+      eval("""std.reverse([1])""") ==> ujson.Arr(1)
+      eval("""std.reverse(["1", true, null])""") ==> ujson.Arr(ujson.Null, true, "1")
+    }
   }
 }