com.google.javascript.jscomp.modules.NonEsModuleProcessor Maven / Gradle / Ivy
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/*
* Copyright 2018 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp.modules;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.javascript.jscomp.deps.ModuleLoader.ModulePath;
import com.google.javascript.jscomp.modules.ModuleMapCreator.ModuleProcessor;
import com.google.javascript.jscomp.modules.ModuleMetadataMap.ModuleMetadata;
import com.google.javascript.rhino.Node;
import java.util.Set;
import javax.annotation.Nullable;
/**
* Catch all module processor for non-ES and non-goog modules that doesn't do any scanning of
* exports but instead will always treat every name as `munged.name`.
*
* This includes goog.provide'd names and CommonJS modules.
*/
// TODO(johnplaisted): It may not be too hard to actually scan these modules and figure out their
// exported keys. At least, assuming we're rigid with what we allow (no dynamic exports).
final class NonEsModuleProcessor implements ModuleProcessor {
private static class NonEsModule extends UnresolvedModule {
private final ModuleMetadata metadata;
private final ModulePath path;
private final Node scriptNode;
NonEsModule(ModuleMetadata metadata, ModulePath path, Node scriptNode) {
this.metadata = metadata;
this.path = path;
this.scriptNode = scriptNode;
}
@Nullable
@Override
public ResolveExportResult resolveExport(
ModuleRequestResolver moduleRequestResolver, String exportName) {
throw new UnsupportedOperationException();
}
@Nullable
@Override
public ResolveExportResult resolveExport(
ModuleRequestResolver moduleRequestResolver,
@Nullable String moduleSpecifier,
String exportName,
Set resolveSet,
Set exportStarSet) {
String namespace = null;
if (moduleSpecifier != null && GoogEsImports.isGoogImportSpecifier(moduleSpecifier)) {
namespace = GoogEsImports.getClosureIdFromGoogImportSpecifier(moduleSpecifier);
} else if (metadata.isGoogProvide()) {
namespace = moduleSpecifier;
}
if (metadata.isCommonJs()) {
// Currently we don't scan require()s, so this only gets hit if an ES module imports a CJS
// module. If so then this module should only have a default export.
if (!exportName.equals("default")) {
return ResolveExportResult.NOT_FOUND;
}
}
return ResolveExportResult.of(
Binding.from(
Export.builder()
.exportName(exportName)
.moduleMetadata(metadata)
.modulePath(path)
.closureNamespace(namespace)
.build(),
scriptNode));
}
@Override
void reset() {}
@Override
public Module resolve(
ModuleRequestResolver moduleRequestResolver, @Nullable String moduleSpecifier) {
String namespace = null;
if (moduleSpecifier != null && GoogEsImports.isGoogImportSpecifier(moduleSpecifier)) {
namespace = GoogEsImports.getClosureIdFromGoogImportSpecifier(moduleSpecifier);
}
return Module.builder()
.path(path)
.metadata(metadata)
.namespace(ImmutableMap.of())
.boundNames(ImmutableMap.of())
.localNameToLocalExport(ImmutableMap.of())
.closureNamespace(namespace)
.unresolvedModule(this)
.build();
}
@Override
ModuleMetadata metadata() {
return metadata;
}
@Override
public ImmutableSet getExportedNames(ModuleRequestResolver moduleRequestResolver) {
throw new UnsupportedOperationException();
}
@Override
public ImmutableSet getExportedNames(
ModuleRequestResolver moduleRequestResolver, Set visited) {
throw new UnsupportedOperationException();
}
}
@Override
public UnresolvedModule process(ModuleMetadata metadata, ModulePath path, Node script) {
return new NonEsModule(metadata, path, script);
}
}