diff options
author | Lang Hames <lhames@gmail.com> | 2016-07-13 21:13:05 +0000 |
---|---|---|
committer | Lang Hames <lhames@gmail.com> | 2016-07-13 21:13:05 +0000 |
commit | 9b42acafff06fbba8d335fa77079fc4e72002ac4 (patch) | |
tree | 00632ed82e9606126df11f3acc0853b96bbc7214 /tools/llvm-nm | |
parent | 3d35f0d482cf5ce6cf87d10a108ade79e7cc2065 (diff) |
[Object] Change Archive::child_iterator for better interop with Error/Expected.
See http://reviews.llvm.org/D22079
Changes the Archive::child_begin and Archive::children to require a reference
to an Error. If iterator increment fails (because the archive header is
damaged) the iterator will be set to 'end()', and the error stored in the
given Error&. The Error value should be checked by the user immediately after
the loop. E.g.:
Error Err;
for (auto &C : A->children(Err)) {
// Do something with archive child C.
}
// Check the error immediately after the loop.
if (Err)
return Err;
Failure to check the Error will result in an abort() when the Error goes out of
scope (as guaranteed by the Error class).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275316 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-nm')
-rw-r--r-- | tools/llvm-nm/llvm-nm.cpp | 74 |
1 files changed, 35 insertions, 39 deletions
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp index 2cd0ede4a53..9b2f5220bad 100644 --- a/tools/llvm-nm/llvm-nm.cpp +++ b/tools/llvm-nm/llvm-nm.cpp @@ -1109,30 +1109,31 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { } } - for (Archive::child_iterator I = A->child_begin(), E = A->child_end(); - I != E; ++I) { - if (error(I->getError())) - return; - auto &C = I->get(); - Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(&Context); - if (!ChildOrErr) { - if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) - error(std::move(E), Filename, C); - continue; - } - if (SymbolicFile *O = dyn_cast<SymbolicFile>(&*ChildOrErr.get())) { - if (!checkMachOAndArchFlags(O, Filename)) - return; - if (!PrintFileName) { - outs() << "\n"; - if (isa<MachOObjectFile>(O)) { - outs() << Filename << "(" << O->getFileName() << ")"; - } else - outs() << O->getFileName(); - outs() << ":\n"; + { + Error Err; + for (auto &C : A->children(Err)) { + Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(&Context); + if (!ChildOrErr) { + if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError())) + error(std::move(E), Filename, C); + continue; + } + if (SymbolicFile *O = dyn_cast<SymbolicFile>(&*ChildOrErr.get())) { + if (!checkMachOAndArchFlags(O, Filename)) + return; + if (!PrintFileName) { + outs() << "\n"; + if (isa<MachOObjectFile>(O)) { + outs() << Filename << "(" << O->getFileName() << ")"; + } else + outs() << O->getFileName(); + outs() << ":\n"; + } + dumpSymbolNamesFromObject(*O, false, Filename); } - dumpSymbolNamesFromObject(*O, false, Filename); } + if (Err) + error(std::move(Err), A->getFileName()); } return; } @@ -1174,12 +1175,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { } else if (Expected<std::unique_ptr<Archive>> AOrErr = I->getAsArchive()) { std::unique_ptr<Archive> &A = *AOrErr; - for (Archive::child_iterator AI = A->child_begin(), - AE = A->child_end(); - AI != AE; ++AI) { - if (error(AI->getError())) - return; - auto &C = AI->get(); + Error Err; + for (auto &C : A->children(Err)) { Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(&Context); if (!ChildOrErr) { @@ -1209,6 +1206,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { ArchitectureName); } } + if (Err) + error(std::move(Err), A->getFileName()); } else { consumeError(AOrErr.takeError()); error(Filename + " for architecture " + @@ -1247,12 +1246,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { } else if (Expected<std::unique_ptr<Archive>> AOrErr = I->getAsArchive()) { std::unique_ptr<Archive> &A = *AOrErr; - for (Archive::child_iterator AI = A->child_begin(), - AE = A->child_end(); - AI != AE; ++AI) { - if (error(AI->getError())) - return; - auto &C = AI->get(); + Error Err; + for (auto &C : A->children(Err)) { Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(&Context); if (!ChildOrErr) { @@ -1272,6 +1267,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { dumpSymbolNamesFromObject(*O, false, ArchiveName); } } + if (Err) + error(std::move(Err), A->getFileName()); } else { consumeError(AOrErr.takeError()); error(Filename + " for architecture " + @@ -1316,11 +1313,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { } else if (Expected<std::unique_ptr<Archive>> AOrErr = I->getAsArchive()) { std::unique_ptr<Archive> &A = *AOrErr; - for (Archive::child_iterator AI = A->child_begin(), AE = A->child_end(); - AI != AE; ++AI) { - if (error(AI->getError())) - return; - auto &C = AI->get(); + Error Err; + for (auto &C : A->children(Err)) { Expected<std::unique_ptr<Binary>> ChildOrErr = C.getAsBinary(&Context); if (!ChildOrErr) { @@ -1349,6 +1343,8 @@ static void dumpSymbolNamesFromFile(std::string &Filename) { dumpSymbolNamesFromObject(*O, false, ArchiveName, ArchitectureName); } } + if (Err) + error(std::move(Err), A->getFileName()); } else { consumeError(AOrErr.takeError()); error(Filename + " for architecture " + |