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b3edb56485
This encapsulates how we handle the coverage regions of a file or function. In the old model, the user had to deal with nested regions, so they needed to maintain their own auxiliary data structures to get any useful information out of this. The new API provides a sequence of non-overlapping coverage segments, which makes it possible to render coverage information in a single pass and avoids a fair amount of extra work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217975 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
//===- RenderingSupport.h - output stream rendering support functions ----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_COV_RENDERINGSUPPORT_H
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#define LLVM_COV_RENDERINGSUPPORT_H
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#include "llvm/Support/raw_ostream.h"
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#include <utility>
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namespace llvm {
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/// \brief A helper class that resets the output stream's color if needed
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/// when destroyed.
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class ColoredRawOstream {
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ColoredRawOstream(const ColoredRawOstream &OS) LLVM_DELETED_FUNCTION;
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public:
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raw_ostream &OS;
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bool IsColorUsed;
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ColoredRawOstream(raw_ostream &OS, bool IsColorUsed)
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: OS(OS), IsColorUsed(IsColorUsed) {}
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ColoredRawOstream(ColoredRawOstream &&Other)
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: OS(Other.OS), IsColorUsed(Other.IsColorUsed) {
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// Reset the other IsColorUsed so that the other object won't reset the
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// color when destroyed.
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Other.IsColorUsed = false;
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}
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~ColoredRawOstream() {
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if (IsColorUsed)
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OS.resetColor();
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}
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};
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template <typename T>
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inline raw_ostream &operator<<(const ColoredRawOstream &OS, T &&Value) {
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return OS.OS << std::forward<T>(Value);
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}
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/// \brief Change the color of the output stream if the `IsColorUsed` flag
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/// is true. Returns an object that resets the color when destroyed.
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inline ColoredRawOstream colored_ostream(raw_ostream &OS,
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raw_ostream::Colors Color,
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bool IsColorUsed = true,
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bool Bold = false, bool BG = false) {
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if (IsColorUsed)
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OS.changeColor(Color, Bold, BG);
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return ColoredRawOstream(OS, IsColorUsed);
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}
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}
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#endif // LLVM_COV_RENDERINGSUPPORT_H
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