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//===- WithColor.cpp ------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/WithColor.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
cl::OptionCategory llvm::ColorCategory("Color Options");
static cl::opt<cl::boolOrDefault>
UseColor("color", cl::cat(ColorCategory),
cl::desc("Use colors in output (default=autodetect)"),
cl::init(cl::BOU_UNSET));
WithColor::WithColor(raw_ostream &OS, HighlightColor Color, ColorMode Mode)
: OS(OS), Mode(Mode) {
// Detect color from terminal type unless the user passed the --color option.
if (colorsEnabled()) {
switch (Color) {
case HighlightColor::Address:
OS.changeColor(raw_ostream::YELLOW);
break;
case HighlightColor::String:
OS.changeColor(raw_ostream::GREEN);
break;
case HighlightColor::Tag:
OS.changeColor(raw_ostream::BLUE);
break;
case HighlightColor::Attribute:
OS.changeColor(raw_ostream::CYAN);
break;
case HighlightColor::Enumerator:
OS.changeColor(raw_ostream::MAGENTA);
break;
case HighlightColor::Macro:
OS.changeColor(raw_ostream::RED);
break;
case HighlightColor::Error:
OS.changeColor(raw_ostream::RED, true);
break;
case HighlightColor::Warning:
OS.changeColor(raw_ostream::MAGENTA, true);
break;
case HighlightColor::Note:
OS.changeColor(raw_ostream::BLACK, true);
break;
case HighlightColor::Remark:
OS.changeColor(raw_ostream::BLUE, true);
break;
}
}
}
raw_ostream &WithColor::error() { return error(errs()); }
raw_ostream &WithColor::warning() { return warning(errs()); }
raw_ostream &WithColor::note() { return note(errs()); }
raw_ostream &WithColor::remark() { return remark(errs()); }
raw_ostream &WithColor::error(raw_ostream &OS, StringRef Prefix,
bool DisableColors) {
if (!Prefix.empty())
OS << Prefix << ": ";
return WithColor(OS, HighlightColor::Error,
DisableColors ? ColorMode::Disable : ColorMode::Auto)
.get()
<< "error: ";
}
raw_ostream &WithColor::warning(raw_ostream &OS, StringRef Prefix,
bool DisableColors) {
if (!Prefix.empty())
OS << Prefix << ": ";
return WithColor(OS, HighlightColor::Warning,
DisableColors ? ColorMode::Disable : ColorMode::Auto)
.get()
<< "warning: ";
}
raw_ostream &WithColor::note(raw_ostream &OS, StringRef Prefix,
bool DisableColors) {
if (!Prefix.empty())
OS << Prefix << ": ";
return WithColor(OS, HighlightColor::Note,
DisableColors ? ColorMode::Disable : ColorMode::Auto)
.get()
<< "note: ";
}
raw_ostream &WithColor::remark(raw_ostream &OS, StringRef Prefix,
bool DisableColors) {
if (!Prefix.empty())
OS << Prefix << ": ";
return WithColor(OS, HighlightColor::Remark,
DisableColors ? ColorMode::Disable : ColorMode::Auto)
.get()
<< "remark: ";
}
bool WithColor::colorsEnabled() {
switch (Mode) {
case ColorMode::Enable:
return true;
case ColorMode::Disable:
return false;
case ColorMode::Auto:
return UseColor == cl::BOU_UNSET ? OS.has_colors()
: UseColor == cl::BOU_TRUE;
}
llvm_unreachable("All cases handled above.");
}
WithColor &WithColor::changeColor(raw_ostream::Colors Color, bool Bold,
bool BG) {
if (colorsEnabled())
OS.changeColor(Color, Bold, BG);
return *this;
}
WithColor &WithColor::resetColor() {
if (colorsEnabled())
OS.resetColor();
return *this;
}
WithColor::~WithColor() { resetColor(); }
void WithColor::defaultErrorHandler(Error Err) {
handleAllErrors(std::move(Err), [](ErrorInfoBase &Info) {
WithColor::error() << Info.message() << '\n';
});
}
void WithColor::defaultWarningHandler(Error Warning) {
handleAllErrors(std::move(Warning), [](ErrorInfoBase &Info) {
WithColor::warning() << Info.message() << '\n';
});
}
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