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65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===--- ClangSourceBufferImporter.h - Map Clang buffers over ---*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_CLANGIMPORTER_CLANGSOURCEBUFFERIMPORTER_H
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#define SWIFT_CLANGIMPORTER_CLANGSOURCEBUFFERIMPORTER_H
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#include "swift/Basic/LLVM.h"
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#include "swift/Basic/SourceLoc.h"
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#include "clang/Basic/SourceLocation.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/IntrusiveRefCntPtr.h"
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#include "llvm/ADT/SmallVector.h"
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namespace llvm {
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class MemoryBuffer;
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}
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namespace clang {
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class SourceManager;
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}
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namespace swift {
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class SourceManager;
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namespace importer {
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/// A helper class used to keep alive the Clang source managers where
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/// diagnostics have been reported.
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///
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/// This is a bit of a hack, but LLVM's source manager (and by extension
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/// Swift's) does not support buffers going away, so if we want to report
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/// diagnostics in them we have to do it this way.
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class ClangSourceBufferImporter {
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// This is not using SmallPtrSet or similar because we need the
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// IntrusiveRefCntPtr to stay a ref-counting pointer.
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SmallVector<llvm::IntrusiveRefCntPtr<const clang::SourceManager>, 4>
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sourceManagersWithDiagnostics;
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llvm::DenseMap<const char *, unsigned> mirroredBuffers;
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SourceManager &swiftSourceManager;
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public:
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explicit ClangSourceBufferImporter(SourceManager &sourceMgr)
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: swiftSourceManager(sourceMgr) {}
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/// Returns a Swift source location that points into a Clang buffer.
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///
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/// This will keep the Clang buffer alive as long as this object.
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SourceLoc resolveSourceLocation(const clang::SourceManager &clangSrcMgr,
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clang::SourceLocation clangLoc);
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};
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} // end namespace importer
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} // end namespace swift
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#endif
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