'use strict';

var _ = require('lodash');

var Node = require('./');

var valueExpressionMixin = require('./valueExpression');

var valueExpressionMixed = false;

// parent class of prefix and postfix unary

var UnaryNode = Node.define({

type: 'UNARY',

constructor: function(config) {

Node.call(this);

this.left = config.left;

this.operator = config.operator;

// Delay mixin to runtime, when all nodes have been defined, and

// mixin only once. ValueExpressionMixin has circular dependencies.

if (!valueExpressionMixed) {

valueExpressionMixed = true;

_.extend(UnaryNode.prototype, valueExpressionMixin());

}

}

});

// allow aliasing

var AliasNode = require('./alias');

_.extend(UnaryNode.prototype, AliasNode.AliasMixin);

module.exports = UnaryNode;