less.js/lib/less/tree/quoted.js

var JsEvalNode = require("./js-eval-node.js"),
    Variable = require("./variable.js");

var Quoted = function (str, content, escaped, index, currentFileInfo) {
    this.escaped = escaped;
    this.value = content || '';
    this.quote = str.charAt(0);
    this.index = index;
    this.currentFileInfo = currentFileInfo;
};
Quoted.prototype = new JsEvalNode();
Quoted.prototype.type = "Quoted";
Quoted.prototype.genCSS = function (env, output) {
    if (!this.escaped) {
        output.add(this.quote, this.currentFileInfo, this.index);
    }
    output.add(this.value);
    if (!this.escaped) {
        output.add(this.quote);
    }
};
Quoted.prototype.eval = function (env) {
    var that = this;
    var value = this.value.replace(/`([^`]+)`/g, function (_, exp) {
        return String(that.evaluateJavaScript(exp, env));
    }).replace(/@\{([\w-]+)\}/g, function (_, name) {
        var v = new(Variable)('@' + name, that.index, that.currentFileInfo).eval(env, true);
        return (v instanceof Quoted) ? v.value : v.toCSS();
    });
    return new(Quoted)(this.quote + value + this.quote, value, this.escaped, this.index, this.currentFileInfo);
};
Quoted.prototype.compare = function (x) {
    if (!x.toCSS) {
        return -1;
    }

    var left, right;

    // when comparing quoted strings allow the quote to differ
    if (x.type === "Quoted" && !this.escaped && !x.escaped) {
        left = x.value;
        right = this.value;
    } else {
        left = this.toCSS();
        right = x.toCSS();
    }

    if (left === right) {
        return 0;
    }

    return left < right ? -1 : 1;
};
module.exports = Quoted;