llvm-project/clang-tools-extra/cpp11-migrate/Transform.cpp

36 lines
1.2 KiB
C++

#include "Transform.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
void collectResults(clang::Rewriter &Rewrite,
FileContentsByPath &Results) {
for (Rewriter::buffer_iterator I = Rewrite.buffer_begin(),
E = Rewrite.buffer_end();
I != E; ++I) {
const FileEntry *Entry = Rewrite.getSourceMgr().getFileEntryForID(I->first);
assert(Entry != 0 && "Expected a FileEntry");
assert(Entry->getName() != 0 &&
"Unexpected NULL return from FileEntry::getName()");
FileContentsByPath::value_type ResultEntry;
ResultEntry.first = Entry->getName();
// Get a copy of the rewritten buffer from the Rewriter.
llvm::raw_string_ostream StringStream(ResultEntry.second);
I->second.write(StringStream);
// Cause results to be written to ResultEntry.second.
StringStream.str();
// FIXME: Use move semantics to avoid copies of the buffer contents if
// benchmarking shows the copies are expensive, especially for large source
// files.
Results.push_back(ResultEntry);
}
}