Error.cpp revision 287506 
1//===- Error.cxx - system_error extensions for llvm-cxxdump -----*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This defines a new error_category for the llvm-cxxdump tool.
11//
12//===----------------------------------------------------------------------===//
13
14#include "Error.h"
15#include "llvm/Support/ErrorHandling.h"
16
17using namespace llvm;
18
19namespace {
20class cxxdump_error_category : public std::error_category {
21public:
22  const char *name() const LLVM_NOEXCEPT override { return "llvm.cxxdump"; }
23  std::string message(int ev) const override {
24    switch (static_cast<cxxdump_error>(ev)) {
25    case cxxdump_error::success:
26      return "Success";
27    case cxxdump_error::file_not_found:
28      return "No such file.";
29    case cxxdump_error::unrecognized_file_format:
30      return "Unrecognized file type.";
31    }
32    llvm_unreachable(
33        "An enumerator of cxxdump_error does not have a message defined.");
34  }
35};
36} // namespace
37
38namespace llvm {
39const std::error_category &cxxdump_category() {
40  static cxxdump_error_category o;
41  return o;
42}
43} // namespace llvm
44