/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/clang/include/clang/Basic/DiagnosticError.h
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1 | | //===--- DiagnosticError.h - Diagnostic payload for llvm::Error -*- C++ -*-===// |
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 | | #ifndef LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H |
10 | | #define LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H |
11 | | |
12 | | #include "clang/Basic/PartialDiagnostic.h" |
13 | | #include "llvm/Support/Error.h" |
14 | | |
15 | | namespace clang { |
16 | | |
17 | | /// Carries a Clang diagnostic in an llvm::Error. |
18 | | /// |
19 | | /// Users should emit the stored diagnostic using the DiagnosticsEngine. |
20 | | class DiagnosticError : public llvm::ErrorInfo<DiagnosticError> { |
21 | | public: |
22 | | DiagnosticError(PartialDiagnosticAt Diag) : Diag(std::move(Diag)) {} |
23 | | |
24 | 0 | void log(raw_ostream &OS) const override { OS << "clang diagnostic"; } |
25 | | |
26 | | PartialDiagnosticAt &getDiagnostic() { return Diag; } |
27 | 0 | const PartialDiagnosticAt &getDiagnostic() const { return Diag; } |
28 | | |
29 | | /// Creates a new \c DiagnosticError that contains the given diagnostic at |
30 | | /// the given location. |
31 | | static llvm::Error create(SourceLocation Loc, PartialDiagnostic Diag) { |
32 | | return llvm::make_error<DiagnosticError>( |
33 | | PartialDiagnosticAt(Loc, std::move(Diag))); |
34 | | } |
35 | | |
36 | | /// Extracts and returns the diagnostic payload from the given \c Error if |
37 | | /// the error is a \c DiagnosticError. Returns none if the given error is not |
38 | | /// a \c DiagnosticError. |
39 | | static Optional<PartialDiagnosticAt> take(llvm::Error &Err) { |
40 | | Optional<PartialDiagnosticAt> Result; |
41 | | Err = llvm::handleErrors(std::move(Err), [&](DiagnosticError &E) { |
42 | | Result = std::move(E.getDiagnostic()); |
43 | | }); |
44 | | return Result; |
45 | | } |
46 | | |
47 | | static char ID; |
48 | | |
49 | | private: |
50 | | // Users are not expected to use error_code. |
51 | 0 | std::error_code convertToErrorCode() const override { |
52 | 0 | return llvm::inconvertibleErrorCode(); |
53 | 0 | } |
54 | | |
55 | | PartialDiagnosticAt Diag; |
56 | | }; |
57 | | |
58 | | } // end namespace clang |
59 | | |
60 | | #endif // LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H |