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