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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===--- DiagnosticError.h - Diagnostic payload for llvm::Error -*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |||
| 9 | #ifndef LLVM_CLANG_BASIC_DIAGNOSTICERROR_H |
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| 10 | #define LLVM_CLANG_BASIC_DIAGNOSTICERROR_H |
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| 11 | |||
| 12 | #include "clang/Basic/PartialDiagnostic.h" |
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| 13 | #include "llvm/Support/Error.h" |
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| 14 | #include <optional> |
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| 15 | |||
| 16 | namespace clang { |
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| 17 | |||
| 18 | /// Carries a Clang diagnostic in an llvm::Error. |
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| 19 | /// |
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| 20 | /// Users should emit the stored diagnostic using the DiagnosticsEngine. |
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| 21 | class DiagnosticError : public llvm::ErrorInfo<DiagnosticError> { |
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| 22 | public: |
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| 23 | DiagnosticError(PartialDiagnosticAt Diag) : Diag(std::move(Diag)) {} |
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| 24 | |||
| 25 | void log(raw_ostream &OS) const override { OS << "clang diagnostic"; } |
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| 26 | |||
| 27 | PartialDiagnosticAt &getDiagnostic() { return Diag; } |
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| 28 | const PartialDiagnosticAt &getDiagnostic() const { return Diag; } |
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| 29 | |||
| 30 | /// Creates a new \c DiagnosticError that contains the given diagnostic at |
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| 31 | /// the given location. |
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| 32 | static llvm::Error create(SourceLocation Loc, PartialDiagnostic Diag) { |
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| 33 | return llvm::make_error<DiagnosticError>( |
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| 34 | PartialDiagnosticAt(Loc, std::move(Diag))); |
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| 35 | } |
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| 36 | |||
| 37 | /// Extracts and returns the diagnostic payload from the given \c Error if |
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| 38 | /// the error is a \c DiagnosticError. Returns none if the given error is not |
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| 39 | /// a \c DiagnosticError. |
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| 40 | static std::optional<PartialDiagnosticAt> take(llvm::Error &Err) { |
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| 41 | std::optional<PartialDiagnosticAt> Result; |
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| 42 | Err = llvm::handleErrors(std::move(Err), [&](DiagnosticError &E) { |
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| 43 | Result = std::move(E.getDiagnostic()); |
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| 44 | }); |
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| 45 | return Result; |
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| 46 | } |
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| 47 | |||
| 48 | static char ID; |
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| 49 | |||
| 50 | private: |
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| 51 | // Users are not expected to use error_code. |
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| 52 | std::error_code convertToErrorCode() const override { |
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| 53 | return llvm::inconvertibleErrorCode(); |
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| 54 | } |
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| 55 | |||
| 56 | PartialDiagnosticAt Diag; |
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| 57 | }; |
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| 58 | |||
| 59 | } // end namespace clang |
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| 60 | |||
| 61 | #endif // LLVM_CLANG_BASIC_DIAGNOSTICERROR_H |