expressions working

Signed-off-by: Casey Lee <cplee@nektos.com>

vendor/github.com/robertkrimen/otto/scope.go

@@ -0,0 +1,35 @@
+package otto
+
+// _scope:
+// entryFile
+// entryIdx
+// top?
+// outer => nil
+
+// _stash:
+// lexical
+// variable
+//
+// _thisStash (ObjectEnvironment)
+// _fnStash
+// _dclStash
+
+// An ECMA-262 ExecutionContext
+type _scope struct {
+	lexical  _stash
+	variable _stash
+	this     *_object
+	eval     bool // Replace this with kind?
+	outer    *_scope
+	depth    int
+
+	frame _frame
+}
+
+func newScope(lexical _stash, variable _stash, this *_object) *_scope {
+	return &_scope{
+		lexical:  lexical,
+		variable: variable,
+		this:     this,
+	}
+}