aboutsummaryrefslogtreecommitdiff
path: root/llvm/lib/Support/WithColor.cpp
blob: abc9fb3e5d60638c795a7e17d1cde7ce94a29407 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
//===- 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 "DebugOptions.h"

#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ManagedStatic.h"

using namespace llvm;

cl::OptionCategory &llvm::getColorCategory() {
  static cl::OptionCategory ColorCategory("Color Options");
  return ColorCategory;
}
namespace {
struct CreateUseColor {
  static void *call() {
    return new cl::opt<cl::boolOrDefault>(
        "color", cl::cat(getColorCategory()),
        cl::desc("Use colors in output (default=autodetect)"),
        cl::init(cl::BOU_UNSET));
  }
};
} // namespace
static ManagedStatic<cl::opt<cl::boolOrDefault>, CreateUseColor> UseColor;
void llvm::initWithColorOptions() { *UseColor; }

static bool DefaultAutoDetectFunction(const raw_ostream &OS) {
  return *UseColor == cl::BOU_UNSET ? OS.has_colors()
                                    : *UseColor == cl::BOU_TRUE;
}

WithColor::AutoDetectFunctionType WithColor::AutoDetectFunction =
    DefaultAutoDetectFunction;

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 AutoDetectFunction(OS);
  }
  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';
  });
}

WithColor::AutoDetectFunctionType WithColor::defaultAutoDetectFunction() {
  return DefaultAutoDetectFunction;
}

void WithColor::setAutoDetectFunction(
    AutoDetectFunctionType NewAutoDetectFunction) {
  AutoDetectFunction = NewAutoDetectFunction;
}