#define LLVM_SUPPORT_FORMATTEDSTREAM_H
#include "llvm/Support/raw_ostream.h"
+#include <utility>
namespace llvm {
/// formatted_raw_ostream - A raw_ostream that wraps another one and keeps track
-/// of column position, allowing padding out to specific column boundaries.
+/// of line and column position, allowing padding out to specific column
+/// boundaries and querying the number of lines written to the stream.
///
class formatted_raw_ostream : public raw_ostream {
-public:
- /// DELETE_STREAM - Tell the destructor to delete the held stream.
- ///
- static const bool DELETE_STREAM = true;
-
- /// PRESERVE_STREAM - Tell the destructor to not delete the held
- /// stream.
- ///
- static const bool PRESERVE_STREAM = false;
-
-private:
/// TheStream - The real stream we output to. We set it to be
/// unbuffered, since we're already doing our own buffering.
///
raw_ostream *TheStream;
- /// DeleteStream - Do we need to delete TheStream in the
- /// destructor?
- ///
- bool DeleteStream;
-
- /// ColumnScanned - The current output column of the data that's
+ /// Position - The current output column and line of the data that's
/// been flushed and the portion of the buffer that's been
- /// scanned. The column scheme is zero-based.
+ /// scanned. The line and column scheme is zero-based.
///
- unsigned ColumnScanned;
+ std::pair<unsigned, unsigned> Position;
/// Scanned - This points to one past the last character in the
/// buffer we've scanned.
///
const char *Scanned;
- virtual void write_impl(const char *Ptr, size_t Size) LLVM_OVERRIDE;
+ void write_impl(const char *Ptr, size_t Size) override;
/// current_pos - Return the current position within the stream,
/// not counting the bytes currently in the buffer.
- virtual uint64_t current_pos() const LLVM_OVERRIDE {
+ uint64_t current_pos() const override {
// Our current position in the stream is all the contents which have been
// written to the underlying stream (*not* the current position of the
// underlying stream).
return TheStream->tell();
}
- /// ComputeColumn - Examine the given output buffer and figure out which
- /// column we end up in after output.
+ /// ComputePosition - Examine the given output buffer and figure out the new
+ /// position after output.
///
- void ComputeColumn(const char *Ptr, size_t size);
+ void ComputePosition(const char *Ptr, size_t size);
+
+ void setStream(raw_ostream &Stream) {
+ releaseStream();
+
+ TheStream = &Stream;
+
+ // This formatted_raw_ostream inherits from raw_ostream, so it'll do its
+ // own buffering, and it doesn't need or want TheStream to do another
+ // layer of buffering underneath. Resize the buffer to what TheStream
+ // had been using, and tell TheStream not to do its own buffering.
+ if (size_t BufferSize = TheStream->GetBufferSize())
+ SetBufferSize(BufferSize);
+ else
+ SetUnbuffered();
+ TheStream->SetUnbuffered();
+
+ Scanned = nullptr;
+ }
public:
/// formatted_raw_ostream - Open the specified file for
/// so it doesn't want another layer of buffering to be happening
/// underneath it.
///
- formatted_raw_ostream(raw_ostream &Stream, bool Delete = false)
- : raw_ostream(), TheStream(0), DeleteStream(false), ColumnScanned(0) {
- setStream(Stream, Delete);
+ formatted_raw_ostream(raw_ostream &Stream)
+ : TheStream(nullptr), Position(0, 0) {
+ setStream(Stream);
}
- explicit formatted_raw_ostream()
- : raw_ostream(), TheStream(0), DeleteStream(false), ColumnScanned(0) {
- Scanned = 0;
+ explicit formatted_raw_ostream() : TheStream(nullptr), Position(0, 0) {
+ Scanned = nullptr;
}
- ~formatted_raw_ostream() {
+ ~formatted_raw_ostream() override {
flush();
releaseStream();
}
- void setStream(raw_ostream &Stream, bool Delete = false) {
- releaseStream();
-
- TheStream = &Stream;
- DeleteStream = Delete;
-
- // This formatted_raw_ostream inherits from raw_ostream, so it'll do its
- // own buffering, and it doesn't need or want TheStream to do another
- // layer of buffering underneath. Resize the buffer to what TheStream
- // had been using, and tell TheStream not to do its own buffering.
- if (size_t BufferSize = TheStream->GetBufferSize())
- SetBufferSize(BufferSize);
- else
- SetUnbuffered();
- TheStream->SetUnbuffered();
-
- Scanned = 0;
- }
-
/// PadToColumn - Align the output to some column number. If the current
/// column is already equal to or more than NewCol, PadToColumn inserts one
/// space.
/// \param NewCol - The column to move to.
formatted_raw_ostream &PadToColumn(unsigned NewCol);
+ /// getColumn - Return the column number
+ unsigned getColumn() { return Position.first; }
+
+ /// getLine - Return the line number
+ unsigned getLine() { return Position.second; }
+
+ raw_ostream &resetColor() override {
+ TheStream->resetColor();
+ return *this;
+ }
+
+ raw_ostream &reverseColor() override {
+ TheStream->reverseColor();
+ return *this;
+ }
+
+ raw_ostream &changeColor(enum Colors Color, bool Bold, bool BG) override {
+ TheStream->changeColor(Color, Bold, BG);
+ return *this;
+ }
+
+ bool is_displayed() const override {
+ return TheStream->is_displayed();
+ }
+
private:
void releaseStream() {
- // Delete the stream if needed. Otherwise, transfer the buffer
- // settings from this raw_ostream back to the underlying stream.
+ // Transfer the buffer settings from this raw_ostream back to the underlying
+ // stream.
if (!TheStream)
return;
- if (DeleteStream)
- delete TheStream;
- else if (size_t BufferSize = GetBufferSize())
+ if (size_t BufferSize = GetBufferSize())
TheStream->SetBufferSize(BufferSize);
else
TheStream->SetUnbuffered();
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