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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#include "rustllvm.h"
#include "llvm/Object/Archive.h"
#if LLVM_VERSION_MINOR >= 7
#include "llvm/Object/ArchiveWriter.h"
#endif
using namespace llvm;
using namespace llvm::object;
struct LLVMRustArchiveMember {
const char *filename;
const char *name;
Archive::Child child;
LLVMRustArchiveMember(): filename(NULL), name(NULL), child(NULL, NULL) {}
~LLVMRustArchiveMember() {}
};
#if LLVM_VERSION_MINOR >= 6
typedef OwningBinary<Archive> RustArchive;
#define GET_ARCHIVE(a) ((a)->getBinary())
#else
typedef Archive RustArchive;
#define GET_ARCHIVE(a) (a)
#endif
extern "C" void*
LLVMRustOpenArchive(char *path) {
ErrorOr<std::unique_ptr<MemoryBuffer>> buf_or = MemoryBuffer::getFile(path,
-1,
false);
if (!buf_or) {
LLVMRustSetLastError(buf_or.getError().message().c_str());
return nullptr;
}
#if LLVM_VERSION_MINOR >= 6
ErrorOr<std::unique_ptr<Archive>> archive_or =
Archive::create(buf_or.get()->getMemBufferRef());
if (!archive_or) {
LLVMRustSetLastError(archive_or.getError().message().c_str());
return nullptr;
}
OwningBinary<Archive> *ret = new OwningBinary<Archive>(
std::move(archive_or.get()), std::move(buf_or.get()));
#else
std::error_code err;
Archive *ret = new Archive(std::move(buf_or.get()), err);
if (err) {
LLVMRustSetLastError(err.message().c_str());
return nullptr;
}
#endif
return ret;
}
extern "C" void
LLVMRustDestroyArchive(RustArchive *ar) {
delete ar;
}
struct RustArchiveIterator {
Archive::child_iterator cur;
Archive::child_iterator end;
};
extern "C" RustArchiveIterator*
LLVMRustArchiveIteratorNew(RustArchive *ra) {
Archive *ar = GET_ARCHIVE(ra);
RustArchiveIterator *rai = new RustArchiveIterator();
rai->cur = ar->child_begin();
rai->end = ar->child_end();
return rai;
}
extern "C" const Archive::Child*
LLVMRustArchiveIteratorNext(RustArchiveIterator *rai) {
if (rai->cur == rai->end)
return NULL;
const Archive::Child *cur = rai->cur.operator->();
Archive::Child *ret = new Archive::Child(*cur);
++rai->cur;
return ret;
}
extern "C" void
LLVMRustArchiveChildFree(Archive::Child *child) {
delete child;
}
extern "C" void
LLVMRustArchiveIteratorFree(RustArchiveIterator *rai) {
delete rai;
}
extern "C" const char*
LLVMRustArchiveChildName(const Archive::Child *child, size_t *size) {
ErrorOr<StringRef> name_or_err = child->getName();
if (name_or_err.getError())
return NULL;
StringRef name = name_or_err.get();
*size = name.size();
return name.data();
}
extern "C" const char*
LLVMRustArchiveChildData(Archive::Child *child, size_t *size) {
StringRef buf = child->getBuffer();
*size = buf.size();
return buf.data();
}
extern "C" LLVMRustArchiveMember*
LLVMRustArchiveMemberNew(char *Filename, char *Name, Archive::Child *child) {
LLVMRustArchiveMember *Member = new LLVMRustArchiveMember;
Member->filename = Filename;
Member->name = Name;
if (child)
Member->child = *child;
return Member;
}
extern "C" void
LLVMRustArchiveMemberFree(LLVMRustArchiveMember *Member) {
delete Member;
}
extern "C" int
LLVMRustWriteArchive(char *Dst,
size_t NumMembers,
const LLVMRustArchiveMember **NewMembers,
bool WriteSymbtab) {
#if LLVM_VERSION_MINOR >= 7
std::vector<NewArchiveIterator> Members;
for (size_t i = 0; i < NumMembers; i++) {
auto Member = NewMembers[i];
assert(Member->name);
if (Member->filename) {
Members.push_back(NewArchiveIterator(Member->filename, Member->name));
} else {
Members.push_back(NewArchiveIterator(Member->child, Member->name));
}
}
auto pair = writeArchive(Dst, Members, WriteSymbtab);
if (!pair.second)
return 0;
LLVMRustSetLastError(pair.second.message().c_str());
#else
LLVMRustSetLastError("writing archives not supported with this LLVM version");
#endif
return -1;
}
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