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app_vue/node_modules/webpack/lib/wasm-async/AsyncWebAssemblyParser.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const t = require("@webassemblyjs/ast");
+const { decode } = require("@webassemblyjs/wasm-parser");
+const EnvironmentNotSupportAsyncWarning = require("../EnvironmentNotSupportAsyncWarning");
+const Parser = require("../Parser");
+const StaticExportsDependency = require("../dependencies/StaticExportsDependency");
+const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency");
+
+/** @typedef {import("../Module").BuildInfo} BuildInfo */
+/** @typedef {import("../Module").BuildMeta} BuildMeta */
+/** @typedef {import("../Parser").ParserState} ParserState */
+/** @typedef {import("../Parser").PreparsedAst} PreparsedAst */
+
+const decoderOpts = {
+	ignoreCodeSection: true,
+	ignoreDataSection: true,
+
+	// this will avoid having to lookup with identifiers in the ModuleContext
+	ignoreCustomNameSection: true
+};
+
+class WebAssemblyParser extends Parser {
+	/**
+	 * @param {{}=} options parser options
+	 */
+	constructor(options) {
+		super();
+		this.hooks = Object.freeze({});
+		this.options = options;
+	}
+
+	/**
+	 * @param {string | Buffer | PreparsedAst} source the source to parse
+	 * @param {ParserState} state the parser state
+	 * @returns {ParserState} the parser state
+	 */
+	parse(source, state) {
+		if (!Buffer.isBuffer(source)) {
+			throw new Error("WebAssemblyParser input must be a Buffer");
+		}
+
+		// flag it as async module
+		const buildInfo = /** @type {BuildInfo} */ (state.module.buildInfo);
+		buildInfo.strict = true;
+		const BuildMeta = /** @type {BuildMeta} */ (state.module.buildMeta);
+		BuildMeta.exportsType = "namespace";
+		BuildMeta.async = true;
+		EnvironmentNotSupportAsyncWarning.check(
+			state.module,
+			state.compilation.runtimeTemplate,
+			"asyncWebAssembly"
+		);
+
+		// parse it
+		const program = decode(source, decoderOpts);
+		const module = program.body[0];
+		/** @type {Array<string>} */
+		const exports = [];
+		t.traverse(module, {
+			ModuleExport({ node }) {
+				exports.push(node.name);
+			},
+
+			ModuleImport({ node }) {
+				const dep = new WebAssemblyImportDependency(
+					node.module,
+					node.name,
+					node.descr,
+					false
+				);
+
+				state.module.addDependency(dep);
+			}
+		});
+
+		state.module.addDependency(new StaticExportsDependency(exports, false));
+
+		return state;
+	}
+}
+
+module.exports = WebAssemblyParser;