Add unpackLiterals proc to patterns module

src/syndicate.nim

@@ -15,9 +15,11 @@ when defined(posix):
   from ./syndicate/relays import Tcp, Unix, connect, connectStdio
   export Tcp, Unix, connect, connectStdio
 
+export patterns
+
 export Actor, Assertion, Facet, Handle, Ref, Symbol, Turn, TurnAction,
     `$`, addCallback, analyse, asyncCheck, bootDataspace,
-        drop, facet, future, grab, grabLit, inFacet, message, newDataspace, onStop, publish,
+        facet, future, inFacet, message, newDataspace, onStop, publish,
         retract, replace, run, stop, unembed
 
 proc `!`*(typ: static typedesc): Pattern {.inline.} =

src/syndicate/patterns.nim

@@ -209,6 +209,12 @@ proc grabLit*(): Pattern =
 proc grabDict*(): Pattern =
   grabType(dataspacePatterns.DCompoundDict[void])
 
+proc unpackLiterals*[E](pr: Preserve[E]): Preserve[E] =
+  result = pr
+  apply(result) do (pr: var Preserve[E]):
+    if pr.isRecord("lit", 1):
+      pr = pr.record[0]
+
 proc inject*(pat: Pattern; bindings: openArray[(int, Pattern)]): Pattern =
   ## Construct a `Pattern` from `pat` with injected overrides from `bindings`.
   ## Injects are made at offsets indexed by the discard (`<_>`) patterns in `pat`.

syndicate.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version = "20230518"
+version = "20230530"
 author        = "Emery Hemingway"
 description   = "Syndicated actors for conversational concurrency"
 license       = "Unlicense"
@@ -9,4 +9,4 @@ srcDir        = "src"
 
 # Dependencies
 
-requires "hashlib", "nim >= 1.4.8", "preserves >= 20221208", "taps >= 20221119"
+requires "hashlib", "nim >= 1.4.8", "preserves >= 20230530", "taps >= 20221119"