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//===--- GenClangType.cpp - Swift IR Generation For Types -----------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Wrapper functions for creating Clang types from Swift types.
//
//===----------------------------------------------------------------------===//
#include "IRGenModule.h"
#include "swift/AST/ASTContext.h"
#include "swift/AST/Types.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/CanonicalType.h"
#include "clang/AST/Type.h"
using namespace swift;
using namespace irgen;
clang::CanQualType IRGenModule::getClangType(CanType type) {
auto *ty = type->getASTContext().getClangTypeForIRGen(type);
return ty ? ty->getCanonicalTypeUnqualified() : clang::CanQualType();
}
clang::CanQualType IRGenModule::getClangType(SILType type) {
return getClangType(type.getASTType());
}
clang::CanQualType IRGenModule::getClangType(SILParameterInfo params,
CanSILFunctionType funcTy) {
auto paramTy = params.getSILStorageType(getSILModule(), funcTy,
getMaximalTypeExpansionContext());
auto clangType = getClangType(paramTy);
// @block_storage types must be @inout_aliasable and have
// special lowering
if (!paramTy.is<SILBlockStorageType>()) {
if (params.isIndirectMutating()) {
return getClangASTContext().getPointerType(clangType);
}
if (params.isFormalIndirect() &&
// Sensitive return types are represented as indirect return value in SIL,
// but are returned as values (if small) in LLVM IR.
!paramTy.isSensitive()) {
auto constTy =
getClangASTContext().getCanonicalType(clangType.withConst());
return getClangASTContext().getPointerType(constTy);
}
}
return clangType;
}
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