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Fix MemoryBuffer::getSTDIN to *not* return null if stdin is empty, this is a lame API.

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Also, Stringrefify some more MemoryBuffer functions, and add two performance FIXMEs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86630 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
2009-11-10 00:43:58 +00:00
parent 0855dee564
commit d65267ee62
4 changed files with 33 additions and 41 deletions
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21
include/llvm/Support/MemoryBuffer.h
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@@ -57,7 +57,7 @@ public:
/// MemoryBuffer if successful, otherwise returning null. If FileSize is
/// specified, this means that the client knows that the file exists and that
/// it has the specified size.
static MemoryBuffer *getFile(const char *Filename,
static MemoryBuffer *getFile(StringRef Filename,
std::string *ErrStr = 0,
int64_t FileSize = -1);
@@ -84,29 +84,18 @@ public:
/// memory allocated by this method. The memory is owned by the MemoryBuffer
/// object.
static MemoryBuffer *getNewUninitMemBuffer(size_t Size,
const char *BufferName = "");
StringRef BufferName = "");
/// getSTDIN - Read all of stdin into a file buffer, and return it. This
/// returns null if stdin is empty.
/// getSTDIN - Read all of stdin into a file buffer, and return it.
static MemoryBuffer *getSTDIN();
/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
/// if the Filename is "-". If an error occurs, this returns null and fills
/// in *ErrStr with a reason. If stdin is empty, this API (unlike getSTDIN)
/// returns an empty buffer.
static MemoryBuffer *getFileOrSTDIN(const char *Filename,
/// in *ErrStr with a reason.
static MemoryBuffer *getFileOrSTDIN(StringRef Filename,
std::string *ErrStr = 0,
int64_t FileSize = -1);
/// getFileOrSTDIN - Open the specified file as a MemoryBuffer, or open stdin
/// if the Filename is "-". If an error occurs, this returns null and fills
/// in *ErrStr with a reason.
static MemoryBuffer *getFileOrSTDIN(const std::string &FN,
std::string *ErrStr = 0,
int64_t FileSize = -1) {
return getFileOrSTDIN(FN.c_str(), ErrStr, FileSize);
}
};
} // end namespace llvm