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9d59044bb1
Add ability to automatically chaining the bridging headers discovered from all dependencies module when doing swift caching build. This will eliminate all implicit bridging header imports from the build and make the bridging header importing behavior much more reliable, while keep the compatibility at maximum. For example, if the current module A depends on module B and C, and both B and C are binary modules that uses bridging header, when building module A, dependency scanner will construct a new header that chains three bridging headers together with the option to build a PCH from it. This will make all importing errors more obvious while improving the performance.
57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
//===--- CompileJobCacheKey.h - compile cache key methods -------*- 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 - 2017 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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//
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// This file contains declarations of utility methods for creating cache keys
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// for compilation jobs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_COMPILEJOBCACHEKEY_H
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#define SWIFT_COMPILEJOBCACHEKEY_H
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/Basic/FileTypes.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/CAS/CASReference.h"
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#include "llvm/CAS/ObjectStore.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/raw_ostream.h"
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namespace swift {
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/// Compute CompileJobBaseKey from swift-frontend command-line arguments.
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/// CompileJobBaseKey represents the core inputs and arguments, and is used as a
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/// base to compute keys for each compiler outputs.
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// TODO: switch to create key from CompilerInvocation after we can canonicalize
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// arguments.
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llvm::Expected<llvm::cas::ObjectRef>
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createCompileJobBaseCacheKey(llvm::cas::ObjectStore &CAS,
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ArrayRef<const char *> Args);
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/// Compute CompileJobKey for the compiler outputs. The key for the output
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/// is computed from the base key for the compilation and the input file index
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/// which is the index for the input among all the input files (not just the
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/// output producing inputs).
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llvm::Expected<llvm::cas::ObjectRef>
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createCompileJobCacheKeyForOutput(llvm::cas::ObjectStore &CAS,
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llvm::cas::ObjectRef BaseKey,
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unsigned InputIndex);
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/// Print the CompileJobKey for debugging purpose.
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llvm::Error printCompileJobCacheKey(llvm::cas::ObjectStore &CAS,
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llvm::cas::ObjectRef Key,
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llvm::raw_ostream &os);
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} // namespace swift
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#endif
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