Cleanup system_error extensions.

llvm-svn: 149432

1 files changed, 92 insertions, 0 deletions

diff --git a/lld/lib/Core/Error.cpp b/lld/lib/Core/Error.cpp
new file mode 100644
index 00000000000..bbf16da6a9d
--- /dev/null
+++ b/lld/lib/Core/Error.cpp
@@ -0,0 +1,92 @@
+//===- 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/Support/ErrorHandling.h"
+
+using namespace lld;
+
+class _native_reader_error_category : public llvm::_do_message {
+public:
+  virtual const char* name() const {
+    return "lld.native.reader";
+  }
+
+  virtual std::string message(int ev) const {
+    switch (ev) {
+    case native_reader_error::success:
+      return "Success";
+    case native_reader_error::unknown_file_format:
+      return "Unknown file foramt";
+    case native_reader_error::file_too_short:
+      return "file truncated";
+    case native_reader_error::file_malformed:
+      return "file malformed";
+    case native_reader_error::memory_error:
+      return "out of memory";
+    case native_reader_error::unknown_chunk_type:
+      return "unknown chunk type";
+    default:
+      llvm_unreachable("An enumerator of native_reader_error does not have a "
+                       "message defined.");
+    }
+  }
+
+  virtual llvm::error_condition default_error_condition(int ev) const {
+    if (ev == native_reader_error::success)
+      return llvm::errc::success;
+    return llvm::errc::invalid_argument;
+  }
+};
+
+const llvm::error_category &lld::native_reader_category() {
+  static _native_reader_error_category o;
+  return o;
+}
+
+inline llvm::error_code make_error_code(native_reader_error e) {
+  return llvm::error_code(static_cast<int>(e), native_reader_category());
+}
+
+class _yaml_reader_error_category : public llvm::_do_message {
+public:
+  virtual const char* name() const {
+    return "lld.yaml.reader";
+  }
+
+  virtual std::string message(int ev) const {
+    switch (ev) {
+    case yaml_reader_error::success:
+      return "Success";
+    case yaml_reader_error::unknown_keyword:
+      return "Unknown keyword found in yaml file";
+    case yaml_reader_error::illegal_value:
+      return "Bad value found in yaml file";
+    default:
+      llvm_unreachable("An enumerator of yaml_reader_error does not have a "
+                       "message defined.");
+    }
+  }
+
+  virtual llvm::error_condition default_error_condition(int ev) const {
+    if (ev == yaml_reader_error::success)
+      return llvm::errc::success;
+    return llvm::errc::invalid_argument;
+  }
+};
+
+const llvm::error_category &lld::yaml_reader_category() {
+  static _yaml_reader_error_category o;
+  return o;
+}
+
+inline llvm::error_code make_error_code(yaml_reader_error e) {
+  return llvm::error_code(static_cast<int>(e), yaml_reader_category());
+}