| //===- Error.cpp - system_error extensions for lld --------------*- C++ -*-===// |
| // |
| // The LLVM Linker |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lld/Core/Error.h" |
| |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/Mutex.h" |
| |
| #include <string> |
| #include <vector> |
| |
| using namespace lld; |
| |
| class _NativeReaderErrorCategory : public std::error_category { |
| public: |
| const char* name() const LLVM_NOEXCEPT override { |
| return "lld.native.reader"; |
| } |
| |
| std::string message(int ev) const override { |
| if (NativeReaderError(ev) == NativeReaderError::success) |
| return "Success"; |
| if (NativeReaderError(ev) == NativeReaderError::unknown_file_format) |
| return "Unknown file format"; |
| if (NativeReaderError(ev) == NativeReaderError::file_too_short) |
| return "file truncated"; |
| if (NativeReaderError(ev) == NativeReaderError::file_malformed) |
| return "file malformed"; |
| if (NativeReaderError(ev) == NativeReaderError::memory_error) |
| return "out of memory"; |
| if (NativeReaderError(ev) == NativeReaderError::unknown_chunk_type) |
| return "unknown chunk type"; |
| llvm_unreachable("An enumerator of NativeReaderError does not have a " |
| "message defined."); |
| } |
| }; |
| |
| const std::error_category &lld::native_reader_category() { |
| static _NativeReaderErrorCategory o; |
| return o; |
| } |
| |
| class _YamlReaderErrorCategory : public std::error_category { |
| public: |
| const char* name() const LLVM_NOEXCEPT override { |
| return "lld.yaml.reader"; |
| } |
| |
| std::string message(int ev) const override { |
| if (YamlReaderError(ev) == YamlReaderError::success) |
| return "Success"; |
| if (YamlReaderError(ev) == YamlReaderError::unknown_keyword) |
| return "Unknown keyword found in yaml file"; |
| if (YamlReaderError(ev) == YamlReaderError::illegal_value) |
| return "Bad value found in yaml file"; |
| llvm_unreachable("An enumerator of YamlReaderError does not have a " |
| "message defined."); |
| } |
| }; |
| |
| const std::error_category &lld::YamlReaderCategory() { |
| static _YamlReaderErrorCategory o; |
| return o; |
| } |
| |
| class _LinkerScriptReaderErrorCategory : public std::error_category { |
| public: |
| const char *name() const LLVM_NOEXCEPT override { |
| return "lld.linker-script.reader"; |
| } |
| |
| std::string message(int ev) const override { |
| LinkerScriptReaderError e = LinkerScriptReaderError(ev); |
| if (e == LinkerScriptReaderError::success) |
| return "Success"; |
| if (e == LinkerScriptReaderError::parse_error) |
| return "Error parsing linker script"; |
| llvm_unreachable( |
| "An enumerator of LinkerScriptReaderError does not have a " |
| "message defined."); |
| } |
| }; |
| |
| const std::error_category &lld::LinkerScriptReaderCategory() { |
| static _LinkerScriptReaderErrorCategory o; |
| return o; |
| } |
| |
| class _InputGraphErrorCategory : public std::error_category { |
| public: |
| const char *name() const LLVM_NOEXCEPT override { |
| return "lld.inputGraph.parse"; |
| } |
| |
| std::string message(int ev) const override { |
| if (InputGraphError(ev) == InputGraphError::success) |
| return "Success"; |
| llvm_unreachable("An enumerator of InputGraphError does not have a " |
| "message defined."); |
| } |
| }; |
| |
| const std::error_category &lld::InputGraphErrorCategory() { |
| static _InputGraphErrorCategory i; |
| return i; |
| } |
| |
| class _ReaderErrorCategory : public std::error_category { |
| public: |
| const char *name() const LLVM_NOEXCEPT override { |
| return "lld.inputGraph.parse"; |
| } |
| |
| std::string message(int ev) const override { |
| if (ReaderError(ev) == ReaderError::success) |
| return "Success"; |
| else if (ReaderError(ev) == ReaderError::unknown_file_format) |
| return "File format for the input file is not recognized by this flavor"; |
| |
| llvm_unreachable("An enumerator of ReaderError does not have a " |
| "message defined."); |
| } |
| }; |
| |
| const std::error_category &lld::ReaderErrorCategory() { |
| static _ReaderErrorCategory i; |
| return i; |
| } |
| |
| |
| |
| |
| namespace lld { |
| |
| |
| /// Temporary class to enable make_dynamic_error_code() until |
| /// llvm::ErrorOr<> is updated to work with error encapsulations |
| /// other than error_code. |
| class dynamic_error_category : public std::error_category { |
| public: |
| const char *name() const LLVM_NOEXCEPT override { |
| return "lld.dynamic_error"; |
| } |
| |
| std::string message(int ev) const override { |
| assert(ev >= 0); |
| assert(ev < (int)_messages.size()); |
| // The value is an index into the string vector. |
| return _messages[ev]; |
| } |
| |
| int add(std::string msg) { |
| llvm::sys::SmartScopedLock<true> lock(_mutex); |
| // Value zero is always the successs value. |
| if (_messages.empty()) |
| _messages.push_back("Success"); |
| _messages.push_back(msg); |
| // Return the index of the string just appended. |
| return _messages.size() - 1; |
| } |
| |
| private: |
| std::vector<std::string> _messages; |
| llvm::sys::SmartMutex<true> _mutex; |
| }; |
| |
| static dynamic_error_category categorySingleton; |
| |
| std::error_code make_dynamic_error_code(StringRef msg) { |
| return std::error_code(categorySingleton.add(msg), categorySingleton); |
| } |
| |
| std::error_code make_dynamic_error_code(const Twine &msg) { |
| return std::error_code(categorySingleton.add(msg.str()), categorySingleton); |
| } |
| |
| } |
| |