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54 lines
2.6 KiB
54 lines
2.6 KiB
"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 ".concat(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 = (0, 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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(0, 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 :".concat(name)); |
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} |
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exports.compilePseudoSelector = compilePseudoSelector;
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