projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a4d82fc JJ |
1 | //===- RenderingSupport.h - output stream rendering support functions ----===// |
| 2 | // | |
| 3 | // The LLVM Compiler Infrastructure | |
| 4 | // | |
| 5 | // This file is distributed under the University of Illinois Open Source | |
| 6 | // License. See LICENSE.TXT for details. | |
| 7 | // | |
| 8 | //===----------------------------------------------------------------------===// | |
| 9 | ||
| 10 | #ifndef LLVM_COV_RENDERINGSUPPORT_H | |
| 11 | #define LLVM_COV_RENDERINGSUPPORT_H | |
| 12 | ||
| 13 | #include "llvm/Support/raw_ostream.h" | |
| 14 | #include <utility> | |
| 15 | ||
| 16 | namespace llvm { | |
| 17 | ||
| 18 | /// \brief A helper class that resets the output stream's color if needed | |
| 19 | /// when destroyed. | |
| 20 | class ColoredRawOstream { | |
| 21 | ColoredRawOstream(const ColoredRawOstream &OS) LLVM_DELETED_FUNCTION; | |
| 22 | ||
| 23 | public: | |
| 24 | raw_ostream &OS; | |
| 25 | bool IsColorUsed; | |
| 26 | ||
| 27 | ColoredRawOstream(raw_ostream &OS, bool IsColorUsed) | |
| 28 | : OS(OS), IsColorUsed(IsColorUsed) {} | |
| 29 | ||
| 30 | ColoredRawOstream(ColoredRawOstream &&Other) | |
| 31 | : OS(Other.OS), IsColorUsed(Other.IsColorUsed) { | |
| 32 | // Reset the other IsColorUsed so that the other object won't reset the | |
| 33 | // color when destroyed. | |
| 34 | Other.IsColorUsed = false; | |
| 35 | } | |
| 36 | ||
| 37 | ~ColoredRawOstream() { | |
| 38 | if (IsColorUsed) | |
| 39 | OS.resetColor(); | |
| 40 | } | |
| 41 | }; | |
| 42 | ||
| 43 | template <typename T> | |
| 44 | inline raw_ostream &operator<<(const ColoredRawOstream &OS, T &&Value) { | |
| 45 | return OS.OS << std::forward<T>(Value); | |
| 46 | } | |
| 47 | ||
| 48 | /// \brief Change the color of the output stream if the `IsColorUsed` flag | |
| 49 | /// is true. Returns an object that resets the color when destroyed. | |
| 50 | inline ColoredRawOstream colored_ostream(raw_ostream &OS, | |
| 51 | raw_ostream::Colors Color, | |
| 52 | bool IsColorUsed = true, | |
| 53 | bool Bold = false, bool BG = false) { | |
| 54 | if (IsColorUsed) | |
| 55 | OS.changeColor(Color, Bold, BG); | |
| 56 | return ColoredRawOstream(OS, IsColorUsed); | |
| 57 | } | |
| 58 | } | |
| 59 | ||
| 60 | #endif // LLVM_COV_RENDERINGSUPPORT_H |