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[interop][SwiftToCxx] guard inline emitted Stdlib module

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This commit is contained in:
Alex Lorenz
2022-10-03 11:30:37 -07:00
parent 6c518bd311
commit f8b54e7ea7
4 changed files with 17 additions and 3 deletions
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8
lib/PrintAsClang/ModuleContentsWriter.cpp
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@@ -773,7 +773,10 @@ EmittedClangHeaderDependencyInfo swift::printModuleContentsAsCxx(
// FIXME: refactor.
if (!prologueOS.str().empty()) {
os << "#endif\n";
// FIXME: This is a workaround for prologue being emitted outside of
// __cplusplus.
if (!M.isStdlibModule())
os << "#endif\n";
os << "#ifdef __cplusplus\n";
os << "namespace ";
M.ValueDecl::getName().print(os);
@@ -784,7 +787,8 @@ EmittedClangHeaderDependencyInfo swift::printModuleContentsAsCxx(
os << prologueOS.str();
os << "\n#ifdef __cplusplus\n";
if (!M.isStdlibModule())
os << "\n#ifdef __cplusplus\n";
os << "}\n";
os << "}\n";
os << "}\n";

5
lib/PrintAsClang/PrintAsClang.cpp
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@@ -528,7 +528,12 @@ bool swift::printAsClangHeader(raw_ostream &os, ModuleDecl *M,
if (defaultDependencyBehavior && deps.dependsOnStandardLibrary) {
assert(!M->isStdlibModule());
SwiftToClangInteropContext interopContext(*M->getASTContext().getStdlibModule(), irGenOpts);
auto macroGuard =
computeMacroGuard(M->getASTContext().getStdlibModule());
os << "#ifndef " << macroGuard << "\n";
os << "#define " << macroGuard << "\n";
printModuleContentsAsCxx(os, *M->getASTContext().getStdlibModule(), interopContext, /*requiresExposedAttribute=*/true);
os << "#endif // " << macroGuard << "\n";
}
os << moduleContents.str();

2
lib/PrintAsClang/experimental-interoperability-version.json
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@@ -1 +1 @@
2
3

5
test/Interop/SwiftToCxx/stdlib/stdlib-dep-inline-in-cxx.swift
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@@ -1,9 +1,14 @@
// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -typecheck %s -typecheck -module-name UseOptional -enable-experimental-cxx-interop -emit-clang-header-path %t/stdlib.h
// RUN: %target-swift-frontend -typecheck %s -typecheck -module-name UseOptional2 -enable-experimental-cxx-interop -emit-clang-header-path %t/stdlib2.h
// RUN: %FileCheck %s < %t/stdlib.h
// RUN: cat %t/stdlib.h %t/stdlib2.h > %t/two_includes.h
// RUN: %check-generic-interop-cxx-header-in-clang(%t/two_includes.h -Wno-unused-private-field -Wno-unused-function -Wno-shadow -Wno-documentation)
@_expose(Cxx)
public func test() -> String {
return ""