1//===--- LogDiagnosticPrinter.cpp - Log Diagnostic Printer ----------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "clang/Frontend/LogDiagnosticPrinter.h"
10#include "clang/Basic/DiagnosticOptions.h"
11#include "clang/Basic/FileManager.h"
12#include "clang/Basic/PlistSupport.h"
13#include "clang/Basic/SourceManager.h"
14#include "llvm/ADT/SmallString.h"
15#include "llvm/Support/ErrorHandling.h"
16#include "llvm/Support/raw_ostream.h"
17using namespace clang;
18using namespace markup;
19
20LogDiagnosticPrinter::LogDiagnosticPrinter(
21 raw_ostream &os, DiagnosticOptions *diags,
22 std::unique_ptr<raw_ostream> StreamOwner)
23 : OS(os), StreamOwner(std::move(StreamOwner)), LangOpts(nullptr),
24 DiagOpts(diags) {}
25
26static StringRef getLevelName(DiagnosticsEngine::Level Level) {
27 switch (Level) {
28 case DiagnosticsEngine::Ignored: return "ignored";
29 case DiagnosticsEngine::Remark: return "remark";
30 case DiagnosticsEngine::Note: return "note";
31 case DiagnosticsEngine::Warning: return "warning";
32 case DiagnosticsEngine::Error: return "error";
33 case DiagnosticsEngine::Fatal: return "fatal error";
34 }
35 llvm_unreachable("Invalid DiagnosticsEngine level!");
36}
37
38void
39LogDiagnosticPrinter::EmitDiagEntry(llvm::raw_ostream &OS,
40 const LogDiagnosticPrinter::DiagEntry &DE) {
41 OS << " <dict>\n";
42 OS << " <key>level</key>\n"
43 << " ";
44 EmitString(o&: OS, s: getLevelName(Level: DE.DiagnosticLevel)) << '\n';
45 if (!DE.Filename.empty()) {
46 OS << " <key>filename</key>\n"
47 << " ";
48 EmitString(o&: OS, s: DE.Filename) << '\n';
49 }
50 if (DE.Line != 0) {
51 OS << " <key>line</key>\n"
52 << " ";
53 EmitInteger(o&: OS, value: DE.Line) << '\n';
54 }
55 if (DE.Column != 0) {
56 OS << " <key>column</key>\n"
57 << " ";
58 EmitInteger(o&: OS, value: DE.Column) << '\n';
59 }
60 if (!DE.Message.empty()) {
61 OS << " <key>message</key>\n"
62 << " ";
63 EmitString(o&: OS, s: DE.Message) << '\n';
64 }
65 OS << " <key>ID</key>\n"
66 << " ";
67 EmitInteger(o&: OS, value: DE.DiagnosticID) << '\n';
68 if (!DE.WarningOption.empty()) {
69 OS << " <key>WarningOption</key>\n"
70 << " ";
71 EmitString(o&: OS, s: DE.WarningOption) << '\n';
72 }
73 OS << " </dict>\n";
74}
75
76void LogDiagnosticPrinter::EndSourceFile() {
77 // We emit all the diagnostics in EndSourceFile. However, we don't emit any
78 // entry if no diagnostics were present.
79 //
80 // Note that DiagnosticConsumer has no "end-of-compilation" callback, so we
81 // will miss any diagnostics which are emitted after and outside the
82 // translation unit processing.
83 if (Entries.empty())
84 return;
85
86 // Write to a temporary string to ensure atomic write of diagnostic object.
87 SmallString<512> Msg;
88 llvm::raw_svector_ostream OS(Msg);
89
90 OS << "<dict>\n";
91 if (!MainFilename.empty()) {
92 OS << " <key>main-file</key>\n"
93 << " ";
94 EmitString(o&: OS, s: MainFilename) << '\n';
95 }
96 if (!DwarfDebugFlags.empty()) {
97 OS << " <key>dwarf-debug-flags</key>\n"
98 << " ";
99 EmitString(o&: OS, s: DwarfDebugFlags) << '\n';
100 }
101 OS << " <key>diagnostics</key>\n";
102 OS << " <array>\n";
103 for (auto &DE : Entries)
104 EmitDiagEntry(OS, DE);
105 OS << " </array>\n";
106 OS << "</dict>\n";
107
108 this->OS << OS.str();
109}
110
111void LogDiagnosticPrinter::HandleDiagnostic(DiagnosticsEngine::Level Level,
112 const Diagnostic &Info) {
113 // Default implementation (Warnings/errors count).
114 DiagnosticConsumer::HandleDiagnostic(DiagLevel: Level, Info);
115
116 // Initialize the main file name, if we haven't already fetched it.
117 if (MainFilename.empty() && Info.hasSourceManager()) {
118 const SourceManager &SM = Info.getSourceManager();
119 FileID FID = SM.getMainFileID();
120 if (FID.isValid()) {
121 if (OptionalFileEntryRef FE = SM.getFileEntryRefForID(FID))
122 MainFilename = std::string(FE->getName());
123 }
124 }
125
126 // Create the diag entry.
127 DiagEntry DE;
128 DE.DiagnosticID = Info.getID();
129 DE.DiagnosticLevel = Level;
130
131 DE.WarningOption =
132 std::string(DiagnosticIDs::getWarningOptionForDiag(DiagID: DE.DiagnosticID));
133
134 // Format the message.
135 SmallString<100> MessageStr;
136 Info.FormatDiagnostic(OutStr&: MessageStr);
137 DE.Message = std::string(MessageStr);
138
139 // Set the location information.
140 DE.Filename = "";
141 DE.Line = DE.Column = 0;
142 if (Info.getLocation().isValid() && Info.hasSourceManager()) {
143 const SourceManager &SM = Info.getSourceManager();
144 PresumedLoc PLoc = SM.getPresumedLoc(Loc: Info.getLocation());
145
146 if (PLoc.isInvalid()) {
147 // At least print the file name if available:
148 FileID FID = SM.getFileID(SpellingLoc: Info.getLocation());
149 if (FID.isValid()) {
150 if (OptionalFileEntryRef FE = SM.getFileEntryRefForID(FID))
151 DE.Filename = std::string(FE->getName());
152 }
153 } else {
154 DE.Filename = PLoc.getFilename();
155 DE.Line = PLoc.getLine();
156 DE.Column = PLoc.getColumn();
157 }
158 }
159
160 // Record the diagnostic entry.
161 Entries.push_back(Elt: DE);
162}
163
164

source code of clang/lib/Frontend/LogDiagnosticPrinter.cpp