- static error_code getOpenFile(int FD, const char *Filename,
- OwningPtr<MemoryBuffer> &Result,
- uint64_t FileSize,
- bool RequiresNullTerminator = true);
- static error_code getOpenFile(int FD, const char *Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- uint64_t FileSize,
- bool RequiresNullTerminator = true);
-
- /// getMemBuffer - Open the specified memory range as a MemoryBuffer. Note
- /// that InputData must be null terminated if RequiresNullTerminator is true.
- static MemoryBuffer *getMemBuffer(StringRef InputData,
- StringRef BufferName = "",
- bool RequiresNullTerminator = true);
-
- /// getMemBufferCopy - Open the specified memory range as a MemoryBuffer,
- /// copying the contents and taking ownership of it. InputData does not
- /// have to be null terminated.
- static MemoryBuffer *getMemBufferCopy(StringRef InputData,
- StringRef BufferName = "");
-
- /// getNewMemBuffer - Allocate a new MemoryBuffer of the specified size that
- /// is completely initialized to zeros. Note that the caller should
- /// initialize the memory allocated by this method. The memory is owned by
- /// the MemoryBuffer object.
- static MemoryBuffer *getNewMemBuffer(size_t Size, StringRef BufferName = "");
-
- /// getNewUninitMemBuffer - Allocate a new MemoryBuffer of the specified size
- /// that is not initialized. Note that the caller should initialize the
- /// memory allocated by this method. The memory is owned by the MemoryBuffer
- /// object.
- static MemoryBuffer *getNewUninitMemBuffer(size_t Size,
- StringRef BufferName = "");
-
- /// getSTDIN - Read all of stdin into a file buffer, and return it.
- /// If an error occurs, this returns null and sets ec.
- static error_code getSTDIN(OwningPtr<MemoryBuffer> &Result);
- static error_code getSTDIN(std::unique_ptr<MemoryBuffer> &Result);
-
-
- /// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
- /// if the Filename is "-". If an error occurs, this returns null and sets
- /// ec.
- static error_code getFileOrSTDIN(StringRef Filename,
- OwningPtr<MemoryBuffer> &Result,
- int64_t FileSize = -1);
- static error_code getFileOrSTDIN(StringRef Filename,
- std::unique_ptr<MemoryBuffer> &Result,
- int64_t FileSize = -1);
+ ///
+ /// \param IsVolatileSize Set to true to indicate that the file size may be
+ /// changing, e.g. when libclang tries to parse while the user is
+ /// editing/updating the file.
+ static ErrorOr<std::unique_ptr<MemoryBuffer>>
+ getOpenFile(int FD, const Twine &Filename, uint64_t FileSize,
+ bool RequiresNullTerminator = true, bool IsVolatileSize = false);
+
+ /// Open the specified memory range as a MemoryBuffer. Note that InputData
+ /// must be null terminated if RequiresNullTerminator is true.
+ static std::unique_ptr<MemoryBuffer>
+ getMemBuffer(StringRef InputData, StringRef BufferName = "",
+ bool RequiresNullTerminator = true);
+
+ static std::unique_ptr<MemoryBuffer>
+ getMemBuffer(MemoryBufferRef Ref, bool RequiresNullTerminator = true);
+
+ /// Open the specified memory range as a MemoryBuffer, copying the contents
+ /// and taking ownership of it. InputData does not have to be null terminated.
+ static std::unique_ptr<MemoryBuffer>
+ getMemBufferCopy(StringRef InputData, const Twine &BufferName = "");
+
+ /// Allocate a new zero-initialized MemoryBuffer of the specified size. Note
+ /// that the caller need not initialize the memory allocated by this method.
+ /// The memory is owned by the MemoryBuffer object.
+ static std::unique_ptr<MemoryBuffer>
+ getNewMemBuffer(size_t Size, StringRef BufferName = "");
+
+ /// Allocate a new MemoryBuffer of the specified size that is not initialized.
+ /// Note that the caller should initialize the memory allocated by this
+ /// method. The memory is owned by the MemoryBuffer object.
+ static std::unique_ptr<MemoryBuffer>
+ getNewUninitMemBuffer(size_t Size, const Twine &BufferName = "");
+
+ /// Read all of stdin into a file buffer, and return it.
+ static ErrorOr<std::unique_ptr<MemoryBuffer>> getSTDIN();
+
+ /// Open the specified file as a MemoryBuffer, or open stdin if the Filename
+ /// is "-".
+ static ErrorOr<std::unique_ptr<MemoryBuffer>>
+ getFileOrSTDIN(const Twine &Filename, int64_t FileSize = -1,
+ bool RequiresNullTerminator = true);
+
+ /// Map a subrange of the specified file as a MemoryBuffer.
+ static ErrorOr<std::unique_ptr<MemoryBuffer>>
+ getFileSlice(const Twine &Filename, uint64_t MapSize, uint64_t Offset);