| //===- CXString.h - Routines for manipulating CXStrings -------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines routines for manipulating CXStrings. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_TOOLS_LIBCLANG_CXSTRING_H |
| #define LLVM_CLANG_TOOLS_LIBCLANG_CXSTRING_H |
| |
| #include "clang-c/Index.h" |
| #include "clang/Basic/LLVM.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/Compiler.h" |
| #include <string> |
| #include <vector> |
| |
| namespace clang { |
| namespace cxstring { |
| |
| struct CXStringBuf; |
| |
| /// \brief Create a CXString object for an empty "" string. |
| CXString createEmpty(); |
| |
| /// \brief Create a CXString object for an NULL string. |
| /// |
| /// A NULL string should be used as an "invalid" value in case of errors. |
| CXString createNull(); |
| |
| /// \brief Create a CXString object from a nul-terminated C string. New |
| /// CXString may contain a pointer to \p String. |
| /// |
| /// \p String should not be changed by the caller afterwards. |
| CXString createRef(const char *String); |
| |
| /// \brief Create a CXString object from a nul-terminated C string. New |
| /// CXString will contain a copy of \p String. |
| /// |
| /// \p String can be changed or freed by the caller. |
| CXString createDup(const char *String); |
| |
| /// \brief Create a CXString object from a StringRef. New CXString may |
| /// contain a pointer to the undrelying data of \p String. |
| /// |
| /// \p String should not be changed by the caller afterwards. |
| CXString createRef(StringRef String); |
| |
| /// \brief Create a CXString object from a StringRef. New CXString will |
| /// contain a copy of \p String. |
| /// |
| /// \p String can be changed or freed by the caller. |
| CXString createDup(StringRef String); |
| |
| // Usually std::string is intended to be used as backing storage for CXString. |
| // In this case, call \c createRef(String.c_str()). |
| // |
| // If you need to make a copy, call \c createDup(StringRef(String)). |
| CXString createRef(std::string String) = delete; |
| |
| /// \brief Create a CXString object that is backed by a string buffer. |
| CXString createCXString(CXStringBuf *buf); |
| |
| CXStringSet *createSet(const std::vector<std::string> &Strings); |
| |
| /// \brief A string pool used for fast allocation/deallocation of strings. |
| class CXStringPool { |
| public: |
| ~CXStringPool(); |
| |
| CXStringBuf *getCXStringBuf(CXTranslationUnit TU); |
| |
| private: |
| std::vector<CXStringBuf *> Pool; |
| |
| friend struct CXStringBuf; |
| }; |
| |
| struct CXStringBuf { |
| SmallString<128> Data; |
| CXTranslationUnit TU; |
| |
| CXStringBuf(CXTranslationUnit TU) : TU(TU) {} |
| |
| /// \brief Return this buffer to the pool. |
| void dispose(); |
| }; |
| |
| CXStringBuf *getCXStringBuf(CXTranslationUnit TU); |
| |
| /// \brief Returns true if the CXString data is managed by a pool. |
| bool isManagedByPool(CXString str); |
| |
| } |
| |
| static inline StringRef getContents(const CXUnsavedFile &UF) { |
| return StringRef(UF.Contents, UF.Length); |
| } |
| } |
| |
| #endif |
| |