| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * 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 androidx.room.solver.binderprovider |
| |
| import androidx.room.parser.ParsedQuery |
| import androidx.room.processing.XDeclaredType |
| import androidx.room.processor.Context |
| import androidx.room.solver.QueryResultBinderProvider |
| import androidx.room.solver.query.result.QueryResultBinder |
| import com.squareup.javapoet.TypeName |
| |
| /** |
| * Common functionality for binder providers that require an additional artifact |
| */ |
| fun QueryResultBinderProvider.requireArtifact( |
| context: Context, |
| requiredType: TypeName, |
| missingArtifactErrorMsg: String |
| ): QueryResultBinderProvider = QueryResultBinderProviderWithRequiredArtifact( |
| context = context, |
| requiredType = requiredType, |
| missingArtifactErrorMsg = missingArtifactErrorMsg, |
| delegate = this |
| ) |
| |
| private class QueryResultBinderProviderWithRequiredArtifact( |
| val context: Context, |
| val requiredType: TypeName, |
| val missingArtifactErrorMsg: String, |
| val delegate: QueryResultBinderProvider |
| ) : QueryResultBinderProvider { |
| private val hasRequiredArtifact by lazy(LazyThreadSafetyMode.NONE) { |
| context.processingEnv.findTypeElement(requiredType) != null |
| } |
| |
| override fun provide(declared: XDeclaredType, query: ParsedQuery): QueryResultBinder { |
| return delegate.provide(declared, query) |
| } |
| |
| override fun matches(declared: XDeclaredType): Boolean { |
| val result = delegate.matches(declared) |
| if (result && !hasRequiredArtifact) { |
| context.logger.e(missingArtifactErrorMsg) |
| } |
| return result |
| } |
| } |