app文件

guoyujie

9 天以前 a6c698f7418c1b0ea6202f068993d74a3347b0e6

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Florent Cailhol @ooflorent
*/
 
"use strict";
 
const ConstDependency = require("./ConstDependency");
const HarmonyExports = require("./HarmonyExports");
 
/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
 
class HarmonyTopLevelThisParserPlugin {
    /**
     * @param {JavascriptParser} parser the parser
     * @returns {void}
     */
    apply(parser) {
        parser.hooks.expression
            .for("this")
            .tap("HarmonyTopLevelThisParserPlugin", node => {
                if (!parser.scope.topLevelScope) return;
                if (HarmonyExports.isEnabled(parser.state)) {
                    const dep = new ConstDependency(
                        "undefined",
                        /** @type {Range} */ (node.range),
                        null
                    );
                    dep.loc = /** @type {DependencyLocation} */ (node.loc);
                    parser.state.module.addPresentationalDependency(dep);
                    return true;
                }
            });
    }
}
 
module.exports = HarmonyTopLevelThisParserPlugin;