1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/github.com/d5/tengo/objects/undefined.go b/vendor/github.com/d5/tengo/objects/undefined.go
new file mode 100644
index 00000000..79a380f5
--- /dev/null
+++ b/vendor/github.com/d5/tengo/objects/undefined.go
@@ -0,0 +1,42 @@
+package objects
+
+import "github.com/d5/tengo/compiler/token"
+
+// Undefined represents an undefined value.
+type Undefined struct{}
+
+// TypeName returns the name of the type.
+func (o *Undefined) TypeName() string {
+	return "undefined"
+}
+
+func (o *Undefined) String() string {
+	return "<undefined>"
+}
+
+// BinaryOp returns another object that is the result of
+// a given binary operator and a right-hand side object.
+func (o *Undefined) BinaryOp(op token.Token, rhs Object) (Object, error) {
+	return nil, ErrInvalidOperator
+}
+
+// Copy returns a copy of the type.
+func (o *Undefined) Copy() Object {
+	return o
+}
+
+// IsFalsy returns true if the value of the type is falsy.
+func (o *Undefined) IsFalsy() bool {
+	return true
+}
+
+// Equals returns true if the value of the type
+// is equal to the value of another object.
+func (o *Undefined) Equals(x Object) bool {
+	return o == x
+}
+
+// IndexGet returns an element at a given index.
+func (o *Undefined) IndexGet(index Object) (Object, error) {
+	return UndefinedValue, nil
+}