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111 lines
4.2 KiB
111 lines
4.2 KiB
3 years ago
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"use strict";
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var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
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if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
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if (ar || !(i in from)) {
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if (!ar) ar = Array.prototype.slice.call(from, 0, i);
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ar[i] = from[i];
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}
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}
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return to.concat(ar || Array.prototype.slice.call(from));
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.subselects = exports.getNextSiblings = exports.ensureIsTag = exports.PLACEHOLDER_ELEMENT = void 0;
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var boolbase_1 = require("boolbase");
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var procedure_1 = require("../procedure");
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/** Used as a placeholder for :has. Will be replaced with the actual element. */
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exports.PLACEHOLDER_ELEMENT = {};
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function ensureIsTag(next, adapter) {
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if (next === boolbase_1.falseFunc)
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return boolbase_1.falseFunc;
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return function (elem) { return adapter.isTag(elem) && next(elem); };
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}
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exports.ensureIsTag = ensureIsTag;
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function getNextSiblings(elem, adapter) {
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var siblings = adapter.getSiblings(elem);
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if (siblings.length <= 1)
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return [];
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var elemIndex = siblings.indexOf(elem);
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if (elemIndex < 0 || elemIndex === siblings.length - 1)
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return [];
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return siblings.slice(elemIndex + 1).filter(adapter.isTag);
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}
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exports.getNextSiblings = getNextSiblings;
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var is = function (next, token, options, context, compileToken) {
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var opts = {
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xmlMode: !!options.xmlMode,
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adapter: options.adapter,
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equals: options.equals,
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};
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var func = compileToken(token, opts, context);
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return function (elem) { return func(elem) && next(elem); };
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};
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/*
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* :not, :has, :is, :matches and :where have to compile selectors
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* doing this in src/pseudos.ts would lead to circular dependencies,
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* so we add them here
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*/
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exports.subselects = {
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is: is,
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/**
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* `:matches` and `:where` are aliases for `:is`.
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*/
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matches: is,
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where: is,
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not: function (next, token, options, context, compileToken) {
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var opts = {
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xmlMode: !!options.xmlMode,
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adapter: options.adapter,
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equals: options.equals,
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};
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var func = compileToken(token, opts, context);
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if (func === boolbase_1.falseFunc)
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return next;
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if (func === boolbase_1.trueFunc)
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return boolbase_1.falseFunc;
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return function not(elem) {
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return !func(elem) && next(elem);
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};
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},
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has: function (next, subselect, options, _context, compileToken) {
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var adapter = options.adapter;
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var opts = {
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xmlMode: !!options.xmlMode,
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adapter: adapter,
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equals: options.equals,
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};
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// @ts-expect-error Uses an array as a pointer to the current element (side effects)
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var context = subselect.some(function (s) {
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return s.some(procedure_1.isTraversal);
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})
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? [exports.PLACEHOLDER_ELEMENT]
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: undefined;
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var compiled = compileToken(subselect, opts, context);
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if (compiled === boolbase_1.falseFunc)
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return boolbase_1.falseFunc;
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if (compiled === boolbase_1.trueFunc) {
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return function (elem) {
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return adapter.getChildren(elem).some(adapter.isTag) && next(elem);
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};
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}
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var hasElement = ensureIsTag(compiled, adapter);
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var _a = compiled.shouldTestNextSiblings, shouldTestNextSiblings = _a === void 0 ? false : _a;
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/*
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* `shouldTestNextSiblings` will only be true if the query starts with
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* a traversal (sibling or adjacent). That means we will always have a context.
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*/
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if (context) {
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return function (elem) {
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context[0] = elem;
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var childs = adapter.getChildren(elem);
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var nextElements = shouldTestNextSiblings
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? __spreadArray(__spreadArray([], childs, true), getNextSiblings(elem, adapter), true) : childs;
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return (next(elem) && adapter.existsOne(hasElement, nextElements));
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};
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}
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return function (elem) {
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return next(elem) &&
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adapter.existsOne(hasElement, adapter.getChildren(elem));
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};
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},
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};
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