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Pass a std::unique_ptr& to the create??? methods is lib/Object.

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This makes the buffer ownership on error conditions very natural. The buffer
is only moved out of the argument if an object is constructed that now
owns the buffer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211546 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-06-23 22:00:37 +00:00
parent 20732d55c2
commit b138caba43
16 changed files with 68 additions and 53 deletions
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15
lib/Object/MachOObjectFile.cpp
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@ -1811,22 +1811,21 @@ void MachOObjectFile::ReadULEB128s(uint64_t Index,
}
}
ErrorOr<ObjectFile *> ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
ErrorOr<ObjectFile *>
ObjectFile::createMachOObjectFile(std::unique_ptr<MemoryBuffer> &Buffer) {
StringRef Magic = Buffer->getBuffer().slice(0, 4);
std::error_code EC;
std::unique_ptr<MachOObjectFile> Ret;
if (Magic == "\xFE\xED\xFA\xCE")
Ret.reset(new MachOObjectFile(Buffer, false, false, EC));
Ret.reset(new MachOObjectFile(Buffer.release(), false, false, EC));
else if (Magic == "\xCE\xFA\xED\xFE")
Ret.reset(new MachOObjectFile(Buffer, true, false, EC));
Ret.reset(new MachOObjectFile(Buffer.release(), true, false, EC));
else if (Magic == "\xFE\xED\xFA\xCF")
Ret.reset(new MachOObjectFile(Buffer, false, true, EC));
Ret.reset(new MachOObjectFile(Buffer.release(), false, true, EC));
else if (Magic == "\xCF\xFA\xED\xFE")
Ret.reset(new MachOObjectFile(Buffer, true, true, EC));
else {
delete Buffer;
Ret.reset(new MachOObjectFile(Buffer.release(), true, true, EC));
else
return object_error::parse_failed;
}
if (EC)
return EC;