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8e2ed1643a
StringSaver now always saves to a BumpPtrAllocator. The only reason for having the virtual saveImpl is so lld can have a thread safe version. The reason for the distinct BumpPtrStringSaver class is to avoid the virtual destructor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239669 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
//===- llvm/Support/StringSaver.h -------------------------------*- 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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#ifndef LLVM_SUPPORT_STRINGSAVER_H
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#define LLVM_SUPPORT_STRINGSAVER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/Allocator.h"
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namespace llvm {
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/// \brief Saves strings in the inheritor's stable storage and returns a stable
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/// raw character pointer.
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class StringSaver {
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protected:
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~StringSaver() {}
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virtual const char *saveImpl(StringRef S);
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public:
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StringSaver(BumpPtrAllocator &Alloc) : Alloc(Alloc) {}
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const char *save(const char *S) { return save(StringRef(S)); }
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const char *save(StringRef S) { return saveImpl(S); }
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const char *save(const Twine &S) { return save(StringRef(S.str())); }
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const char *save(std::string &S) { return save(StringRef(S)); }
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private:
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BumpPtrAllocator &Alloc;
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};
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class BumpPtrStringSaver final : public StringSaver {
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public:
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BumpPtrStringSaver(BumpPtrAllocator &Alloc) : StringSaver(Alloc) {}
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};
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}
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#endif
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