chushihua

node_modules/webpack/lib/dependencies/ImportParserPlugin.js

@@ -0,0 +1,89 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const ImportEagerContextDependency = require("./ImportEagerContextDependency");
+const ImportWeakDependency = require("./ImportWeakDependency");
+const ImportWeakContextDependency = require("./ImportWeakContextDependency");
+const ImportLazyOnceContextDependency = require("./ImportLazyOnceContextDependency");
+const ImportLazyContextDependency = require("./ImportLazyContextDependency");
+const ImportDependenciesBlock = require("./ImportDependenciesBlock");
+const ImportEagerDependency = require("./ImportEagerDependency");
+const ContextDependencyHelpers = require("./ContextDependencyHelpers");
+const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
+
+class ImportParserPlugin {
+	constructor(options) {
+		this.options = options;
+	}
+
+	apply(parser) {
+		const options = this.options;
+
+		parser.plugin(["call System.import", "import-call"], (expr) => {
+			if(expr.arguments.length !== 1)
+				throw new Error("Incorrect number of arguments provided to 'import(module: string) -> Promise'.");
+
+			const param = parser.evaluateExpression(expr.arguments[0]);
+
+			let chunkName = null;
+			let mode = "lazy";
+
+			const importOptions = parser.getCommentOptions(expr.range);
+			if(importOptions) {
+				if(typeof importOptions.webpackChunkName !== "undefined") {
+					if(typeof importOptions.webpackChunkName !== "string")
+						parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`));
+					else
+						chunkName = importOptions.webpackChunkName;
+				}
+				if(typeof importOptions.webpackMode !== "undefined") {
+					if(typeof importOptions.webpackMode !== "string")
+						parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected a string, but received: ${importOptions.webpackMode}.`));
+					else
+						mode = importOptions.webpackMode;
+				}
+			}
+
+			if(param.isString()) {
+				if(mode !== "lazy" && mode !== "eager" && mode !== "weak") {
+					parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'eager' or 'weak', but received: ${mode}.`));
+				}
+
+				if(mode === "eager") {
+					const dep = new ImportEagerDependency(param.string, expr.range);
+					parser.state.current.addDependency(dep);
+				} else if(mode === "weak") {
+					const dep = new ImportWeakDependency(param.string, expr.range);
+					parser.state.current.addDependency(dep);
+				} else {
+					const depBlock = new ImportDependenciesBlock(param.string, expr.range, chunkName, parser.state.module, expr.loc);
+					parser.state.current.addBlock(depBlock);
+				}
+				return true;
+			} else {
+				if(mode !== "lazy" && mode !== "lazy-once" && mode !== "eager" && mode !== "weak") {
+					parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'lazy-once', 'eager' or 'weak', but received: ${mode}.`));
+				}
+
+				let Dep = ImportLazyContextDependency;
+				if(mode === "eager") {
+					Dep = ImportEagerContextDependency;
+				} else if(mode === "weak") {
+					Dep = ImportWeakContextDependency;
+				} else if(mode === "lazy-once") {
+					Dep = ImportLazyOnceContextDependency;
+				}
+				const dep = ContextDependencyHelpers.create(Dep, expr.range, param, expr, options, chunkName);
+				if(!dep) return;
+				dep.loc = expr.loc;
+				dep.optional = !!parser.scope.inTry;
+				parser.state.current.addDependency(dep);
+				return true;
+			}
+		});
+	}
+}
+module.exports = ImportParserPlugin;