css-select/lib/pseudo-selectors/index.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compilePseudoSelector = exports.aliases = exports.pseudos = exports.filters = void 0;
/*
 * Pseudo selectors
 *
 * Pseudo selectors are available in three forms:
 *
 * 1. Filters are called when the selector is compiled and return a function
 *  that has to return either false, or the results of `next()`.
 * 2. Pseudos are called on execution. They have to return a boolean.
 * 3. Subselects work like filters, but have an embedded selector that will be run separately.
 *
 * Filters are great if you want to do some pre-processing, or change the call order
 * of `next()` and your code.
 * Pseudos should be used to implement simple checks.
 */
var boolbase_1 = require("boolbase");
var css_what_1 = require("css-what");
var filters_1 = require("./filters");
Object.defineProperty(exports, "filters", { enumerable: true, get: function () { return filters_1.filters; } });
var pseudos_1 = require("./pseudos");
Object.defineProperty(exports, "pseudos", { enumerable: true, get: function () { return pseudos_1.pseudos; } });
var aliases_1 = require("./aliases");
Object.defineProperty(exports, "aliases", { enumerable: true, get: function () { return aliases_1.aliases; } });
var subselects_1 = require("./subselects");
function compilePseudoSelector(next, selector, options, context, compileToken) {
    var name = selector.name, data = selector.data;
    if (Array.isArray(data)) {
        return subselects_1.subselects[name](next, data, options, context, compileToken);
    }
    if (name in aliases_1.aliases) {
        if (data != null) {
            throw new Error("Pseudo ".concat(name, " doesn't have any arguments"));
        }
        // The alias has to be parsed here, to make sure options are respected.
        var alias = (0, css_what_1.parse)(aliases_1.aliases[name], options);
        return subselects_1.subselects.is(next, alias, options, context, compileToken);
    }
    if (name in filters_1.filters) {
        return filters_1.filters[name](next, data, options, context);
    }
    if (name in pseudos_1.pseudos) {
        var pseudo_1 = pseudos_1.pseudos[name];
        (0, pseudos_1.verifyPseudoArgs)(pseudo_1, name, data);
        return pseudo_1 === boolbase_1.falseFunc
            ? boolbase_1.falseFunc
            : next === boolbase_1.trueFunc
                ? function (elem) { return pseudo_1(elem, options, data); }
                : function (elem) { return pseudo_1(elem, options, data) && next(elem); };
    }
    throw new Error("unmatched pseudo-class :".concat(name));
}
exports.compilePseudoSelector = compilePseudoSelector;