Alexandre Ganea 6a7efef4af [DebugInfo] Common behavior for error types
Following D50807, and heading towards D50664, this intermediary change does the following:

1. Upgrade all custom Error types in llvm/trunk/lib/DebugInfo/ to use the new StringError behavior (D50807).
2. Implement std::is_error_code_enum and make_error_code() for DebugInfo error enumerations.
3. Rename GenericError -> PDBError (the file will be renamed in a subsequent commit)
4. Update custom error messages to follow the same formatting: (\w\s*)+\.
5. Keep generic "file not found" (ENOENT) errors as they are in PDB code. Previously, there used to be a custom enumeration for that purpose.
6. Remove a few extraneous LF in log() implementations. Printing LF is a responsability at a higher level, not at the error level.

Differential Revision: https://reviews.llvm.org/D51499

llvm-svn: 341228
2018-08-31 17:41:58 +00:00

47 lines
1.8 KiB
C++

//===- MSFError.cpp - Error extensions for MSF files ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/MSF/MSFError.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ManagedStatic.h"
using namespace llvm;
using namespace llvm::msf;
// FIXME: This class is only here to support the transition to llvm::Error. It
// will be removed once this transition is complete. Clients should prefer to
// deal with the Error value directly, rather than converting to error_code.
class MSFErrorCategory : public std::error_category {
public:
const char *name() const noexcept override { return "llvm.msf"; }
std::string message(int Condition) const override {
switch (static_cast<msf_error_code>(Condition)) {
case msf_error_code::unspecified:
return "An unknown error has occurred.";
case msf_error_code::insufficient_buffer:
return "The buffer is not large enough to read the requested number of "
"bytes.";
case msf_error_code::not_writable:
return "The specified stream is not writable.";
case msf_error_code::no_stream:
return "The specified stream does not exist.";
case msf_error_code::invalid_format:
return "The data is in an unexpected format.";
case msf_error_code::block_in_use:
return "The block is already in use.";
}
llvm_unreachable("Unrecognized msf_error_code");
}
};
static llvm::ManagedStatic<MSFErrorCategory> MSFCategory;
const std::error_category &llvm::msf::MSFErrCategory() { return *MSFCategory; }
char MSFError::ID;