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185 lines
5.9 KiB
185 lines
5.9 KiB
"use strict";
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exports.__esModule = true;
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var _parser = require("./parser");
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var _parser2 = _interopRequireDefault(_parser);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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var Processor = function () {
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function Processor(func, options) {
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_classCallCheck(this, Processor);
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this.func = func || function noop() {};
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this.funcRes = null;
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this.options = options;
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}
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Processor.prototype._shouldUpdateSelector = function _shouldUpdateSelector(rule) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var merged = Object.assign({}, this.options, options);
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if (merged.updateSelector === false) {
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return false;
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} else {
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return typeof rule !== "string";
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}
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};
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Processor.prototype._isLossy = function _isLossy() {
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var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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var merged = Object.assign({}, this.options, options);
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if (merged.lossless === false) {
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return true;
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} else {
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return false;
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}
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};
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Processor.prototype._root = function _root(rule) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var parser = new _parser2.default(rule, this._parseOptions(options));
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return parser.root;
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};
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Processor.prototype._parseOptions = function _parseOptions(options) {
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return {
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lossy: this._isLossy(options)
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};
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};
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Processor.prototype._run = function _run(rule) {
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var _this = this;
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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return new Promise(function (resolve, reject) {
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try {
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var root = _this._root(rule, options);
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Promise.resolve(_this.func(root)).then(function (transform) {
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var string = undefined;
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if (_this._shouldUpdateSelector(rule, options)) {
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string = root.toString();
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rule.selector = string;
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}
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return { transform: transform, root: root, string: string };
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}).then(resolve, reject);
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} catch (e) {
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reject(e);
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return;
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}
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});
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};
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Processor.prototype._runSync = function _runSync(rule) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var root = this._root(rule, options);
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var transform = this.func(root);
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if (transform && typeof transform.then === "function") {
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throw new Error("Selector processor returned a promise to a synchronous call.");
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}
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var string = undefined;
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if (options.updateSelector && typeof rule !== "string") {
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string = root.toString();
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rule.selector = string;
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}
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return { transform: transform, root: root, string: string };
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};
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/**
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* Process rule into a selector AST.
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {Promise<parser.Root>} The AST of the selector after processing it.
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*/
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Processor.prototype.ast = function ast(rule, options) {
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return this._run(rule, options).then(function (result) {
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return result.root;
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});
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};
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/**
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* Process rule into a selector AST synchronously.
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {parser.Root} The AST of the selector after processing it.
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*/
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Processor.prototype.astSync = function astSync(rule, options) {
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return this._runSync(rule, options).root;
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};
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/**
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* Process a selector into a transformed value asynchronously
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {Promise<any>} The value returned by the processor.
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*/
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Processor.prototype.transform = function transform(rule, options) {
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return this._run(rule, options).then(function (result) {
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return result.transform;
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});
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};
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/**
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* Process a selector into a transformed value synchronously.
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {any} The value returned by the processor.
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*/
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Processor.prototype.transformSync = function transformSync(rule, options) {
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return this._runSync(rule, options).transform;
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};
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/**
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* Process a selector into a new selector string asynchronously.
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {string} the selector after processing.
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*/
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Processor.prototype.process = function process(rule, options) {
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return this._run(rule, options).then(function (result) {
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return result.string || result.root.toString();
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});
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};
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/**
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* Process a selector into a new selector string synchronously.
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*
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* @param rule {postcss.Rule | string} The css selector to be processed
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* @param options The options for processing
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* @returns {string} the selector after processing.
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*/
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Processor.prototype.processSync = function processSync(rule, options) {
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var result = this._runSync(rule, options);
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return result.string || result.root.toString();
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};
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return Processor;
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}();
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exports.default = Processor;
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module.exports = exports["default"];
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