111 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			111 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"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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