Merge branch 'master' into feature/listtypes

1 files changed, 7 insertions, 0 deletions

diff --git a/neb/std/types.py b/neb/std/types.py
index 01e4fb3..9cd8e6d 100644
--- a/neb/std/types.py
+++ b/neb/std/types.py
@@ -88,6 +88,11 @@ def interpretIsLiteral(symbol, args, env, ns):
 
 TYPES.register("literal?", Builtin("literal?", interpretIsLiteral, [Arg("arg", TypeEnum.ANY)], return_type=Type(":bool")))
 
+def interpretIsHandle(symbol, args, env, ns):
+    return Bool(isinstance(args[0], Handle))
+
+TYPES.register("handle?", Builtin("handle?", interpretIsHandle, [Arg("arg", TypeEnum.ANY)], return_type=Type(":bool")))
+
 # add types to env
 any_type = NebType(":any", None, interpretIsAny)
 literal_type = NebType(":literal", any_type, interpretIsLiteral)
@@ -98,6 +103,7 @@ bool_type = NebType(":bool", literal_type, interpretIsBool)
 number_type = NebType(":number", literal_type, interpretIsNumber)
 int_type = NebType(":int", number_type, interpretIsInt)
 float_type = NebType(":float", number_type, interpretIsFloat)
+handle_type = NebType(":handle", any_type, interpretIsHandle)
 
 TYPES.register(":any", any_type)
 TYPES.register(":literal", literal_type)
@@ -108,3 +114,4 @@ TYPES.register(":bool", bool_type)
 TYPES.register(":number", number_type)
 TYPES.register(":int", int_type)
 TYPES.register(":float", float_type)
+TYPES.register(":handle", handle_type)