120 lines
4.4 KiB
JavaScript
120 lines
4.4 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.compileToken = exports.compileUnsafe = exports.compile = void 0;
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var css_what_1 = require("css-what");
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var boolbase_1 = require("boolbase");
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var sort_1 = __importDefault(require("./sort"));
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var procedure_1 = require("./procedure");
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var general_1 = require("./general");
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var subselects_1 = require("./pseudo-selectors/subselects");
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/**
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* Compiles a selector to an executable function.
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*
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* @param selector Selector to compile.
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* @param options Compilation options.
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* @param context Optional context for the selector.
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*/
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function compile(selector, options, context) {
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var next = compileUnsafe(selector, options, context);
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return (0, subselects_1.ensureIsTag)(next, options.adapter);
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}
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exports.compile = compile;
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function compileUnsafe(selector, options, context) {
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var token = typeof selector === "string" ? (0, css_what_1.parse)(selector) : selector;
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return compileToken(token, options, context);
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}
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exports.compileUnsafe = compileUnsafe;
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function includesScopePseudo(t) {
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return (t.type === "pseudo" &&
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(t.name === "scope" ||
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(Array.isArray(t.data) &&
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t.data.some(function (data) { return data.some(includesScopePseudo); }))));
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}
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var DESCENDANT_TOKEN = { type: css_what_1.SelectorType.Descendant };
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var FLEXIBLE_DESCENDANT_TOKEN = {
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type: "_flexibleDescendant",
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};
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var SCOPE_TOKEN = {
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type: css_what_1.SelectorType.Pseudo,
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name: "scope",
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data: null,
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};
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/*
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* CSS 4 Spec (Draft): 3.3.1. Absolutizing a Scope-relative Selector
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* http://www.w3.org/TR/selectors4/#absolutizing
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*/
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function absolutize(token, _a, context) {
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var adapter = _a.adapter;
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// TODO Use better check if the context is a document
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var hasContext = !!(context === null || context === void 0 ? void 0 : context.every(function (e) {
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var parent = adapter.isTag(e) && adapter.getParent(e);
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return e === subselects_1.PLACEHOLDER_ELEMENT || (parent && adapter.isTag(parent));
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}));
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for (var _i = 0, token_1 = token; _i < token_1.length; _i++) {
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var t = token_1[_i];
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if (t.length > 0 && (0, procedure_1.isTraversal)(t[0]) && t[0].type !== "descendant") {
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// Don't continue in else branch
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}
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else if (hasContext && !t.some(includesScopePseudo)) {
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t.unshift(DESCENDANT_TOKEN);
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}
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else {
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continue;
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}
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t.unshift(SCOPE_TOKEN);
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}
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}
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function compileToken(token, options, context) {
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var _a;
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token = token.filter(function (t) { return t.length > 0; });
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token.forEach(sort_1.default);
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context = (_a = options.context) !== null && _a !== void 0 ? _a : context;
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var isArrayContext = Array.isArray(context);
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var finalContext = context && (Array.isArray(context) ? context : [context]);
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absolutize(token, options, finalContext);
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var shouldTestNextSiblings = false;
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var query = token
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.map(function (rules) {
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if (rules.length >= 2) {
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var first = rules[0], second = rules[1];
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if (first.type !== "pseudo" || first.name !== "scope") {
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// Ignore
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}
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else if (isArrayContext && second.type === "descendant") {
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rules[1] = FLEXIBLE_DESCENDANT_TOKEN;
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}
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else if (second.type === "adjacent" ||
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second.type === "sibling") {
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shouldTestNextSiblings = true;
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}
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}
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return compileRules(rules, options, finalContext);
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})
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.reduce(reduceRules, boolbase_1.falseFunc);
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query.shouldTestNextSiblings = shouldTestNextSiblings;
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return query;
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}
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exports.compileToken = compileToken;
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function compileRules(rules, options, context) {
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var _a;
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return rules.reduce(function (previous, rule) {
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return previous === boolbase_1.falseFunc
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? boolbase_1.falseFunc
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: (0, general_1.compileGeneralSelector)(previous, rule, options, context, compileToken);
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}, (_a = options.rootFunc) !== null && _a !== void 0 ? _a : boolbase_1.trueFunc);
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}
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function reduceRules(a, b) {
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if (b === boolbase_1.falseFunc || a === boolbase_1.trueFunc) {
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return a;
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}
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if (a === boolbase_1.falseFunc || b === boolbase_1.trueFunc) {
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return b;
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}
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return function combine(elem) {
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return a(elem) || b(elem);
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};
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}
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