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llvm-6502/include/llvm/Support/raw_os_ostream.h
Chris Lattner cd0129f5a6 Make some methods const. The only interesting change here is that
it changes raw_fd_ostream::preferred_buffer_size to return zero on
a scary stat failure instead of setting the stream to an error state.
This method really should not mutate the stream.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91740 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-19 01:38:42 +00:00

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//===- raw_os_ostream.h - std::ostream adaptor for raw_ostream --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the raw_os_ostream class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_RAW_OS_OSTREAM_H
#define LLVM_SUPPORT_RAW_OS_OSTREAM_H
#include "llvm/Support/raw_ostream.h"
#include <iosfwd>
namespace llvm {
/// raw_os_ostream - A raw_ostream that writes to an std::ostream. This is a
/// simple adaptor class. It does not check for output errors; clients should
/// use the underlying stream to detect errors.
class raw_os_ostream : public raw_ostream {
std::ostream &OS;
/// write_impl - See raw_ostream::write_impl.
virtual void write_impl(const char *Ptr, size_t Size);
/// current_pos - Return the current position within the stream, not
/// counting the bytes currently in the buffer.
virtual uint64_t current_pos() const;
public:
raw_os_ostream(std::ostream &O) : OS(O) {}
~raw_os_ostream();
};
} // end llvm namespace
#endif