1 //===--- Diagnostic.cpp - Framework for clang diagnostics tools ----------===//
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 //  Implements classes to support/store diagnostics refactoring.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/Tooling/Core/Diagnostic.h"
14 #include "clang/Basic/SourceManager.h"
15 #include "llvm/ADT/STLExtras.h"
16 
17 namespace clang {
18 namespace tooling {
19 
20 DiagnosticMessage::DiagnosticMessage(llvm::StringRef Message)
21     : Message(Message), FileOffset(0) {}
22 
23 DiagnosticMessage::DiagnosticMessage(llvm::StringRef Message,
24                                      const SourceManager &Sources,
25                                      SourceLocation Loc)
26     : Message(Message), FileOffset(0) {
27   assert(Loc.isValid() && Loc.isFileID());
28   FilePath = Sources.getFilename(Loc);
29 
30   // Don't store offset in the scratch space. It doesn't tell anything to the
31   // user. Moreover, it depends on the history of macro expansions and thus
32   // prevents deduplication of warnings in headers.
33   if (!FilePath.empty())
34     FileOffset = Sources.getFileOffset(Loc);
35 }
36 
37 Diagnostic::Diagnostic(llvm::StringRef DiagnosticName,
38                        Diagnostic::Level DiagLevel, StringRef BuildDirectory)
39     : DiagnosticName(DiagnosticName), DiagLevel(DiagLevel),
40       BuildDirectory(BuildDirectory) {}
41 
42 Diagnostic::Diagnostic(llvm::StringRef DiagnosticName,
43                        const DiagnosticMessage &Message,
44                        const SmallVector<DiagnosticMessage, 1> &Notes,
45                        Level DiagLevel, llvm::StringRef BuildDirectory)
46     : DiagnosticName(DiagnosticName), Message(Message), Notes(Notes),
47       DiagLevel(DiagLevel), BuildDirectory(BuildDirectory) {}
48 
49 const llvm::StringMap<Replacements> *selectFirstFix(const Diagnostic& D) {
50    if (!D.Message.Fix.empty())
51     return &D.Message.Fix;
52   auto Iter = llvm::find_if(D.Notes, [](const tooling::DiagnosticMessage &D) {
53     return !D.Fix.empty();
54   });
55   if (Iter != D.Notes.end())
56     return &Iter->Fix;
57   return nullptr;
58 }
59 
60 } // end namespace tooling
61 } // end namespace clang
62