| /* |
| * Copyright (C) 2015, 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. |
| */ |
| |
| #pragma once |
| |
| #include "aidl_language.h" |
| |
| #include <iostream> |
| |
| // We must include windows.h before android-base/logging.h on Windows. |
| #ifdef _WIN32 |
| #include <windows.h> |
| #endif |
| |
| #include <android-base/logging.h> |
| |
| // Generic point for printing any error in the AIDL compiler. |
| class AidlErrorLog { |
| public: |
| AidlErrorLog(bool fatal, const AidlLocation& location) |
| : os_(std::cerr), fatal_(fatal), location_(location) { |
| sHadError = true; |
| |
| os_ << "ERROR: "; |
| os_ << location << ": "; |
| } |
| AidlErrorLog(bool fatal, const std::string& filename) |
| : AidlErrorLog(fatal, AidlLocation(filename, AidlLocation::Source::EXTERNAL)) {} |
| AidlErrorLog(bool fatal, const AidlNode& node) : AidlErrorLog(fatal, node.location_) {} |
| AidlErrorLog(bool fatal, const AidlNode* node) : AidlErrorLog(fatal, *node) {} |
| |
| template <typename T> |
| AidlErrorLog(bool fatal, const std::unique_ptr<T>& node) : AidlErrorLog(fatal, *node) {} |
| ~AidlErrorLog() { |
| os_ << std::endl; |
| if (fatal_) abort(); |
| if (location_.IsInternal()) { |
| os_ << "Logging an internal location should not happen. Offending location: " << location_ |
| << std::endl; |
| abort(); |
| } |
| } |
| |
| // AidlErrorLog is a single use object. No need to copy or move |
| AidlErrorLog(const AidlErrorLog&) = delete; |
| AidlErrorLog(AidlErrorLog&&) = delete; |
| AidlErrorLog& operator=(const AidlErrorLog&) = delete; |
| AidlErrorLog& operator=(AidlErrorLog&&) = delete; |
| |
| std::ostream& os_; |
| |
| static void clearError() { sHadError = false; } |
| static bool hadError() { return sHadError; } |
| |
| private: |
| bool fatal_; |
| const AidlLocation location_; |
| static bool sHadError; |
| }; |
| |
| // A class used to make it obvious to clang that code is going to abort. This |
| // informs static analyses of the aborting behavior of `AIDL_FATAL`, and |
| // helps generate slightly faster/smaller code. |
| class AidlAbortOnDestruction { |
| public: |
| __attribute__((noreturn)) ~AidlAbortOnDestruction() { abort(); } |
| }; |
| |
| #define AIDL_ERROR(CONTEXT) ::AidlErrorLog(false /*fatal*/, (CONTEXT)).os_ |
| #define AIDL_FATAL(CONTEXT) \ |
| (::AidlAbortOnDestruction(), ::AidlErrorLog(true /*fatal*/, (CONTEXT)).os_) |
| #define AIDL_FATAL_IF(CONDITION, CONTEXT) \ |
| if (CONDITION) AIDL_FATAL(CONTEXT) << "Bad internal state: " << #CONDITION << ": " |