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