public:
/// Construct a new raw_svector_ostream.
///
- /// \arg O - The vector to write to; this *must* have at least 128 bytes of
- /// free space in it.
+ /// \arg O - The vector to write to; this should generally have at least 128
+ /// bytes free to avoid any extraneous memory overhead.
explicit raw_svector_ostream(SmallVectorImpl<char> &O);
~raw_svector_ostream();
+
+ /// str - Flushes the stream contents to the target vector and return a
+ /// StringRef for the vector contents.
+ StringRef str();
};
/// raw_null_ostream - A raw_ostream that discards all output.
// and we only need to set the vector size when the data is flushed.
raw_svector_ostream::raw_svector_ostream(SmallVectorImpl<char> &O) : OS(O) {
- // Set up the initial external buffer. We enforce that the buffer must have at
+ // Set up the initial external buffer. We make sure that the buffer has at
// least 128 bytes free; raw_ostream itself only requires 64, but we want to
// make sure that we don't grow the buffer unnecessarily on destruction (when
// the data is flushed). See the FIXME below.
- if (OS.capacity() - OS.size() < 128)
- llvm_report_error("Invalid argument, must have at least 128 bytes free!");
+ OS.reserve(OS.size() + 128);
SetBuffer(OS.end(), OS.capacity() - OS.size());
}
uint64_t raw_svector_ostream::current_pos() { return OS.size(); }
+StringRef raw_svector_ostream::str() {
+ flush();
+ return StringRef(OS.begin(), OS.size());
+}
+
//===----------------------------------------------------------------------===//
// raw_null_ostream
//===----------------------------------------------------------------------===//