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39 lines
995 B
C++
39 lines
995 B
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef EXECUTABLE_SEMANTICS_COMMON_ERROR_H_
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#define EXECUTABLE_SEMANTICS_COMMON_ERROR_H_
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/raw_ostream.h"
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namespace Carbon {
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// Prints an error and exits. This should be used for non-recoverable errors
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// with user input.
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//
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// For example:
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// FatalUserError() << "Input is not valid!";
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class FatalUserError {
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public:
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FatalUserError() { llvm::errs() << "ERROR: "; }
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~FatalUserError() {
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// Finish with a newline.
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llvm::errs() << "\n";
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exit(-1);
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}
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// Forward output to llvm::errs.
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template <typename T>
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FatalUserError& operator<<(const T& message) {
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llvm::errs() << message;
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return *this;
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}
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};
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} // namespace Carbon
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#endif // EXECUTABLE_SEMANTICS_COMMON_ERROR_H_
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