var Keyword = require(“../tree/keyword”),

functionRegistry = require("./function-registry");

var defaultFunc = {

eval: function () {
    var v = this.value_, e = this.error_;
    if (e) {
        throw e;
    }
    if (v != null) {
        return v ? Keyword.True : Keyword.False;
    }
},
value: function (v) {
    this.value_ = v;
},
error: function (e) {
    this.error_ = e;
},
reset: function () {
    this.value_ = this.error_ = null;
}

};

functionRegistry.add(“default”, defaultFunc.eval.bind(defaultFunc));

module.exports = defaultFunc;