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46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
//===--- FileSystem.h - File helpers that interact with Diags ---*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_FILESYSTEM_H
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#define SWIFT_AST_FILESYSTEM_H
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#include "swift/Basic/FileSystem.h"
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/AST/DiagnosticsCommon.h"
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namespace swift {
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/// A wrapper around swift::atomicallyWritingToFile that handles diagnosing any
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/// filesystem errors and asserts the output path is nonempty.
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///
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/// \returns true if there were any errors, either from the filesystem
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/// operations or from \p action returning true.
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inline bool
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withOutputFile(DiagnosticEngine &diags, StringRef outputPath,
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llvm::function_ref<bool(llvm::raw_pwrite_stream &)> action) {
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assert(!outputPath.empty());
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bool actionFailed = false;
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std::error_code EC = swift::atomicallyWritingToFile(
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outputPath,
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[&](llvm::raw_pwrite_stream &out) { actionFailed = action(out); });
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if (EC) {
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diags.diagnose(SourceLoc(), diag::error_opening_output, outputPath,
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EC.message());
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return true;
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}
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return actionFailed;
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}
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} // end namespace swift
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#endif // SWIFT_AST_FILESYSTEM_H
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