(function (tree) {
tree.Assignment = function (key, val) {
this.key = key; this.value = val;
}; tree.Assignment.prototype = {
toCSS: function () { return this.key + '=' + (this.value.toCSS ? this.value.toCSS() : this.value); }, eval: function (env) { if (this.value.eval) { this.value = this.value.eval(env) } return this; }
};
})(require('../tree'));