1 /* <lambda>null2 * Copyright (C) 2025 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tools.metalava.model.turbine 18 19 import com.android.tools.metalava.model.item.DefaultCodebase 20 import com.google.turbine.diag.SourceFile 21 import com.google.turbine.tree.Tree.CompUnit 22 23 /** 24 * Creates [TurbineSourceFile]s on demand for a [SourceFile] and caches the result for reuse. 25 * 26 * @param codebase the [DefaultCodebase] of which any created [TurbineSourceFile]s are part. 27 * @param units the [CompUnit]s from which the [TurbineSourceFile]s will be created. 28 */ 29 internal class TurbineSourceFileCache( 30 private val codebase: DefaultCodebase, 31 units: List<CompUnit>, 32 ) { 33 /** Map from [SourceFile.path] to [CompUnit]. */ 34 private val pathToCompUnit = units.associateBy { it.source().path() } 35 36 /** Map from file path to the [TurbineSourceFile]. */ 37 private val turbineSourceFiles = mutableMapOf<String, TurbineSourceFile>() 38 39 /** 40 * Get the [TurbineSourceFile] for a [SourceFile]. 41 * 42 * If none exists then find the [CompUnit] for [sourceFile] by [SourceFile.path], failing if it 43 * could not be found. Then create a [TurbineSourceFile] from that, cache it for future use and 44 * return it. 45 */ 46 internal fun turbineSourceFile(sourceFile: SourceFile): TurbineSourceFile = 47 turbineSourceFiles.computeIfAbsent(sourceFile.path()) { path -> 48 val unit = pathToCompUnit[path] ?: error("cannot find CompUnit for $path") 49 TurbineSourceFile(codebase, unit) 50 } 51 } 52