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Filename : stringify.js
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"use strict";
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
        if (ar || !(i in from)) {
            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
            ar[i] = from[i];
        }
    }
    return to.concat(ar || Array.prototype.slice.call(from));
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.stringify = void 0;
var types_1 = require("./types");
var attribValChars = ["\\", '"'];
var pseudoValChars = __spreadArray(__spreadArray([], attribValChars, true), ["(", ")"], false);
var charsToEscapeInAttributeValue = new Set(attribValChars.map(function (c) { return c.charCodeAt(0); }));
var charsToEscapeInPseudoValue = new Set(pseudoValChars.map(function (c) { return c.charCodeAt(0); }));
var charsToEscapeInName = new Set(__spreadArray(__spreadArray([], pseudoValChars, true), [
    "~",
    "^",
    "$",
    "*",
    "+",
    "!",
    "|",
    ":",
    "[",
    "]",
    " ",
    ".",
], false).map(function (c) { return c.charCodeAt(0); }));
/**
 * Turns `selector` back into a string.
 *
 * @param selector Selector to stringify.
 */
function stringify(selector) {
    return selector
        .map(function (token) { return token.map(stringifyToken).join(""); })
        .join(", ");
}
exports.stringify = stringify;
function stringifyToken(token, index, arr) {
    switch (token.type) {
        // Simple types
        case types_1.SelectorType.Child:
            return index === 0 ? "> " : " > ";
        case types_1.SelectorType.Parent:
            return index === 0 ? "< " : " < ";
        case types_1.SelectorType.Sibling:
            return index === 0 ? "~ " : " ~ ";
        case types_1.SelectorType.Adjacent:
            return index === 0 ? "+ " : " + ";
        case types_1.SelectorType.Descendant:
            return " ";
        case types_1.SelectorType.ColumnCombinator:
            return index === 0 ? "|| " : " || ";
        case types_1.SelectorType.Universal:
            // Return an empty string if the selector isn't needed.
            return token.namespace === "*" &&
                index + 1 < arr.length &&
                "name" in arr[index + 1]
                ? ""
                : "".concat(getNamespace(token.namespace), "*");
        case types_1.SelectorType.Tag:
            return getNamespacedName(token);
        case types_1.SelectorType.PseudoElement:
            return "::".concat(escapeName(token.name, charsToEscapeInName)).concat(token.data === null
                ? ""
                : "(".concat(escapeName(token.data, charsToEscapeInPseudoValue), ")"));
        case types_1.SelectorType.Pseudo:
            return ":".concat(escapeName(token.name, charsToEscapeInName)).concat(token.data === null
                ? ""
                : "(".concat(typeof token.data === "string"
                    ? escapeName(token.data, charsToEscapeInPseudoValue)
                    : stringify(token.data), ")"));
        case types_1.SelectorType.Attribute: {
            if (token.name === "id" &&
                token.action === types_1.AttributeAction.Equals &&
                token.ignoreCase === "quirks" &&
                !token.namespace) {
                return "#".concat(escapeName(token.value, charsToEscapeInName));
            }
            if (token.name === "class" &&
                token.action === types_1.AttributeAction.Element &&
                token.ignoreCase === "quirks" &&
                !token.namespace) {
                return ".".concat(escapeName(token.value, charsToEscapeInName));
            }
            var name_1 = getNamespacedName(token);
            if (token.action === types_1.AttributeAction.Exists) {
                return "[".concat(name_1, "]");
            }
            return "[".concat(name_1).concat(getActionValue(token.action), "=\"").concat(escapeName(token.value, charsToEscapeInAttributeValue), "\"").concat(token.ignoreCase === null ? "" : token.ignoreCase ? " i" : " s", "]");
        }
    }
}
function getActionValue(action) {
    switch (action) {
        case types_1.AttributeAction.Equals:
            return "";
        case types_1.AttributeAction.Element:
            return "~";
        case types_1.AttributeAction.Start:
            return "^";
        case types_1.AttributeAction.End:
            return "$";
        case types_1.AttributeAction.Any:
            return "*";
        case types_1.AttributeAction.Not:
            return "!";
        case types_1.AttributeAction.Hyphen:
            return "|";
        case types_1.AttributeAction.Exists:
            throw new Error("Shouldn't be here");
    }
}
function getNamespacedName(token) {
    return "".concat(getNamespace(token.namespace)).concat(escapeName(token.name, charsToEscapeInName));
}
function getNamespace(namespace) {
    return namespace !== null
        ? "".concat(namespace === "*"
            ? "*"
            : escapeName(namespace, charsToEscapeInName), "|")
        : "";
}
function escapeName(str, charsToEscape) {
    var lastIdx = 0;
    var ret = "";
    for (var i = 0; i < str.length; i++) {
        if (charsToEscape.has(str.charCodeAt(i))) {
            ret += "".concat(str.slice(lastIdx, i), "\\").concat(str.charAt(i));
            lastIdx = i + 1;
        }
    }
    return ret.length > 0 ? ret + str.slice(lastIdx) : str;
}