expressions working

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

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

@@ -0,0 +1,24 @@
+package otto
+
+import (
+	"github.com/robertkrimen/otto/ast"
+	"github.com/robertkrimen/otto/file"
+)
+
+type _file struct {
+	name string
+	src  string
+	base int // This will always be 1 or greater
+}
+
+type _compiler struct {
+	file    *file.File
+	program *ast.Program
+}
+
+func (cmpl *_compiler) parse() *_nodeProgram {
+	if cmpl.program != nil {
+		cmpl.file = cmpl.program.File
+	}
+	return cmpl._parse(cmpl.program)
+}