forked from zhurui/management
110 lines
2.7 KiB
JavaScript
110 lines
2.7 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const DependencyReference = require("./DependencyReference");
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const ModuleDependency = require("./ModuleDependency");
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const Template = require("../Template");
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class HarmonyImportDependency extends ModuleDependency {
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constructor(request, originModule, sourceOrder, parserScope) {
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super(request);
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this.redirectedModule = undefined;
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this.originModule = originModule;
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this.sourceOrder = sourceOrder;
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this.parserScope = parserScope;
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}
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get _module() {
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return this.redirectedModule || this.module;
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}
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getReference() {
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if (!this._module) return null;
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return new DependencyReference(
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this._module,
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false,
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this.weak,
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this.sourceOrder
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);
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}
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getImportVar() {
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let importVarMap = this.parserScope.importVarMap;
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if (!importVarMap) this.parserScope.importVarMap = importVarMap = new Map();
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let importVar = importVarMap.get(this._module);
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if (importVar) return importVar;
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importVar = `${Template.toIdentifier(
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`${this.userRequest}`
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)}__WEBPACK_IMPORTED_MODULE_${importVarMap.size}__`;
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importVarMap.set(this._module, importVar);
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return importVar;
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}
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getImportStatement(update, runtime) {
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return runtime.importStatement({
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update,
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module: this._module,
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importVar: this.getImportVar(),
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request: this.request,
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originModule: this.originModule
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});
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}
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updateHash(hash) {
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super.updateHash(hash);
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const importedModule = this._module;
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hash.update(
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(importedModule &&
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(!importedModule.buildMeta || importedModule.buildMeta.exportsType)) +
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""
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);
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hash.update((importedModule && importedModule.id) + "");
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}
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disconnect() {
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super.disconnect();
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this.redirectedModule = undefined;
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}
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}
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module.exports = HarmonyImportDependency;
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const importEmittedMap = new WeakMap();
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HarmonyImportDependency.Template = class HarmonyImportDependencyTemplate {
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apply(dep, source, runtime) {
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// no-op
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}
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getHarmonyInitOrder(dep) {
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return dep.sourceOrder;
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}
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static isImportEmitted(dep, source) {
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let sourceInfo = importEmittedMap.get(source);
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if (!sourceInfo) return false;
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const key = dep._module || dep.request;
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return key && sourceInfo.emittedImports.get(key);
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}
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harmonyInit(dep, source, runtime, dependencyTemplates) {
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let sourceInfo = importEmittedMap.get(source);
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if (!sourceInfo) {
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importEmittedMap.set(
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source,
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(sourceInfo = {
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emittedImports: new Map()
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})
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);
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}
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const key = dep._module || dep.request;
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if (key && sourceInfo.emittedImports.get(key)) return;
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sourceInfo.emittedImports.set(key, true);
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const content = dep.getImportStatement(false, runtime);
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source.insert(-1, content);
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}
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};
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