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038a4f0b80
C++ interop is now enabled in SwiftCompilerSources, so we can remove some of the C bridging layer and use C++ classes directly from Swift. rdar://83361087
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
//===--- BridgingUtils.h - utilities for swift bridging -------------------===//
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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 - 2021 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_BASIC_BRIDGINGUTILS_H
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#define SWIFT_BASIC_BRIDGINGUTILS_H
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#include "swift/Basic/BasicBridging.h"
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#include "swift/Basic/SourceLoc.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/AllocatorBase.h"
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#include <string>
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namespace swift {
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inline BridgedStringRef getBridgedStringRef(llvm::StringRef str) {
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return {(const unsigned char *)str.data(), str.size()};
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}
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inline llvm::StringRef getStringRef(BridgedStringRef str) {
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return llvm::StringRef((const char *)str.data, str.length);
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}
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template <typename T>
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inline llvm::ArrayRef<T> getArrayRef(BridgedArrayRef bridged) {
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return {static_cast<const T *>(bridged.data), bridged.numElements};
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}
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inline CharSourceRange
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getCharSourceRange(const BridgedCharSourceRange &bridged) {
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return CharSourceRange(bridged.start, bridged.byteLength);
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}
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inline BridgedCharSourceRange
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getBridgedCharSourceRange(const CharSourceRange &range) {
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return {range.getStart(), range.getByteLength()};
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}
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/// Copies the string in an malloc'ed memory and the caller is responsible for
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/// freeing it. 'freeBridgedStringRef()' is available in 'BasicBridging.h'
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inline BridgedStringRef
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getCopiedBridgedStringRef(std::string str, bool removeTrailingNewline = false) {
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// A couple of mallocs are needed for passing a std::string to Swift. But
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// it's currently only used or debug descriptions. So, its' maybe not so bad -
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// for now.
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// TODO: find a better way to pass std::strings to Swift.
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llvm::StringRef strRef(str);
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if (removeTrailingNewline)
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strRef.consume_back("\n");
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llvm::MallocAllocator allocator;
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llvm::StringRef copy = strRef.copy(allocator);
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return getBridgedStringRef(copy);
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}
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} // namespace swift
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#endif
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