1 files changed, 29 insertions, 0 deletions
diff --git a/vendor/github.com/d5/tengo/objects/builtin_len.go b/vendor/github.com/d5/tengo/objects/builtin_len.go
new file mode 100644
index 00000000..39fbedd8
--- /dev/null
+++ b/vendor/github.com/d5/tengo/objects/builtin_len.go
@@ -0,0 +1,29 @@
+package objects
+
+// len(obj object) => int
+func builtinLen(args ...Object) (Object, error) {
+	if len(args) != 1 {
+		return nil, ErrWrongNumArguments
+	}
+
+	switch arg := args[0].(type) {
+	case *Array:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	case *ImmutableArray:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	case *String:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	case *Bytes:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	case *Map:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	case *ImmutableMap:
+		return &Int{Value: int64(len(arg.Value))}, nil
+	default:
+		return nil, ErrInvalidArgumentType{
+			Name:     "first",
+			Expected: "array/string/bytes/map",
+			Found:    arg.TypeName(),
+		}
+	}
+}