forked from OSchip/llvm-project
56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
//===-- ReplaceAutoPtr.h ------------ std::auto_ptr replacement -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file provides the declaration of the ReplaceAutoPtrTransform
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/// class.
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///
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//===----------------------------------------------------------------------===//
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#ifndef CPP11_MIGRATE_REPLACE_AUTO_PTR_H
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#define CPP11_MIGRATE_REPLACE_AUTO_PTR_H
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#include "Core/Transform.h"
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#include "llvm/Support/Compiler.h"
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/// \brief Subclass of Transform that transforms the deprecated \c std::auto_ptr
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/// into the C++11 \c std::unique_ptr.
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///
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/// Note that both the \c std::auto_ptr type and the transfer of ownership are
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/// transformed. \c std::auto_ptr provides two ways to transfer the ownership,
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/// the copy-constructor and the assignment operator. Unlike most classes theses
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/// operations do not 'copy' the resource but they 'steal' it.
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/// \c std::unique_ptr uses move semantics instead, which makes the intent of
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/// transferring the resource explicit. This difference between the two smart
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/// pointers requires to wrap the copy-ctor and assign-operator with
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/// \c std::move().
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///
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/// For example, given:
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/// \code
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/// std::auto_ptr<int> i, j;
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/// i = j;
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/// \endcode
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/// the code is transformed to:
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/// \code
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/// std::unique_ptr<int> i, j;
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/// i = std::move(j);
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/// \endcode
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class ReplaceAutoPtrTransform : public Transform {
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public:
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ReplaceAutoPtrTransform(const TransformOptions &Options)
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: Transform("ReplaceAutoPtr", Options) {}
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/// \see Transform::run().
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virtual int apply(FileOverrides &InputStates,
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const clang::tooling::CompilationDatabase &Database,
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const std::vector<std::string> &SourcePaths) LLVM_OVERRIDE;
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};
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#endif // CPP11_MIGRATE_REPLACE_AUTO_PTR_H
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