//===--- DiagnosticError.h - Diagnostic payload for llvm::Error -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
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#define LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
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#include "clang/Basic/PartialDiagnostic.h"
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#include "llvm/Support/Error.h"
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namespace clang {
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/// Carries a Clang diagnostic in an llvm::Error.
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///
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/// Users should emit the stored diagnostic using the DiagnosticsEngine.
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class DiagnosticError : public llvm::ErrorInfo<DiagnosticError> {
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public:
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DiagnosticError(PartialDiagnosticAt Diag) : Diag(std::move(Diag)) {}
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void log(raw_ostream &OS) const override { OS << "clang diagnostic"; }
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PartialDiagnosticAt &getDiagnostic() { return Diag; }
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const PartialDiagnosticAt &getDiagnostic() const { return Diag; }
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/// Creates a new \c DiagnosticError that contains the given diagnostic at
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/// the given location.
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static llvm::Error create(SourceLocation Loc, PartialDiagnostic Diag) {
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return llvm::make_error<DiagnosticError>(
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PartialDiagnosticAt(Loc, std::move(Diag)));
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}
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/// Extracts and returns the diagnostic payload from the given \c Error if
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/// the error is a \c DiagnosticError. Returns none if the given error is not
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/// a \c DiagnosticError.
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static Optional<PartialDiagnosticAt> take(llvm::Error &Err) {
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Optional<PartialDiagnosticAt> Result;
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Err = llvm::handleErrors(std::move(Err), [&](DiagnosticError &E) {
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Result = std::move(E.getDiagnostic());
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});
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return Result;
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}
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static char ID;
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private:
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// Users are not expected to use error_code.
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std::error_code convertToErrorCode() const override {
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return llvm::inconvertibleErrorCode();
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}
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PartialDiagnosticAt Diag;
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};
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} // end namespace clang
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#endif // LLVM_CLANG_BASIC_DIAGNOSTIC_ERROR_H
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