| /* |
| * Copyright (C) 2023 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 android.tools.common |
| |
| import kotlin.js.JsExport |
| import kotlin.js.JsName |
| |
| @JsExport |
| interface ITrace<Entry : ITraceEntry> { |
| @JsName("entries") val entries: Array<Entry> |
| |
| @JsName("slice") fun slice(startTimestamp: Timestamp, endTimestamp: Timestamp): ITrace<Entry> |
| |
| /** |
| * @return an entry that matches exactly [timestamp] |
| * @throws if there is no entry in the trace at [timestamp] |
| */ |
| @JsName("getEntryExactlyAt") |
| fun getEntryExactlyAt(timestamp: Timestamp): Entry { |
| return entries.firstOrNull { it.timestamp == timestamp } |
| ?: throw RuntimeException("Entry does not exist for timestamp $timestamp") |
| } |
| |
| /** |
| * @return the entry that is "active' at [timestamp] |
| * ``` |
| * (the entry at [timestamp] or the one before it if no entry exists at [timestamp]) |
| * @throws if |
| * ``` |
| * the provided [timestamp] is before all entries in the trace |
| */ |
| @JsName("getEntryAt") |
| fun getEntryAt(timestamp: Timestamp): Entry { |
| return entries.dropLastWhile { it.timestamp > timestamp }.lastOrNull() |
| ?: error("No entry at or before timestamp $timestamp") |
| } |
| } |