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[interop] emit a parsable C++ header for a module that includes namespace declaration for the module interface

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This commit is contained in:
Alex Lorenz
2022-01-20 14:01:01 -08:00
parent e106551028
commit 54b466f983
6 changed files with 141 additions and 62 deletions
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12
lib/PrintAsClang/ModuleContentsWriter.cpp
View File

@@ -619,3 +619,15 @@ swift::printModuleContentsAsObjC(raw_ostream &os,
: AccessLevel::Internal; : AccessLevel::Internal;
ModuleWriter(os, imports, M, requiredAccess).write(); ModuleWriter(os, imports, M, requiredAccess).write();
} }
void swift::printModuleContentsAsCxx(
raw_ostream &os, llvm::SmallPtrSetImpl<ImportModuleTy> &imports,
ModuleDecl &M) {
os << "namespace ";
M.ValueDecl::getName().print(os);
os << " {\n\n";
// TODO (Alex): Emit module contents.
os << "\n} // namespace ";
M.ValueDecl::getName().print(os);
os << "\n\n";
}

8
lib/PrintAsClang/ModuleContentsWriter.h
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@@ -1,4 +1,4 @@
//===--- ModuleContentsWriter.h - Walk a module to print ObjC ---*- C++ -*-===// //===--- ModuleContentsWriter.h - Walk module to print ObjC/C++ -*- C++ -*-===//
// //
// This source file is part of the Swift.org open source project // This source file is part of the Swift.org open source project
// //
@@ -33,6 +33,12 @@ void printModuleContentsAsObjC(raw_ostream &os,
llvm::SmallPtrSetImpl<ImportModuleTy> &imports, llvm::SmallPtrSetImpl<ImportModuleTy> &imports,
ModuleDecl &M); ModuleDecl &M);
/// Prints the declarations of \p M to \p os in C++ language mode and collects
/// imports in \p imports along the way.
void printModuleContentsAsCxx(raw_ostream &os,
llvm::SmallPtrSetImpl<ImportModuleTy> &imports,
ModuleDecl &M);
} // end namespace swift } // end namespace swift
#endif #endif

22
lib/PrintAsClang/OutputLanguageMode.h Normal file
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@@ -0,0 +1,22 @@
//===--- OutputLanguageMode.h - Output mode for clang printer ---*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2022 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
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_PRINTASCLANG_OUTPUTLANGUAGEMODE_H
#define SWIFT_PRINTASCLANG_OUTPUTLANGUAGEMODE_H
namespace swift {
enum class OutputLanguageMode { ObjC, Cxx };
} // end namespace swift
#endif

135
lib/PrintAsClang/PrintAsClang.cpp
View File

@@ -13,6 +13,7 @@
#include "swift/PrintAsClang/PrintAsClang.h" #include "swift/PrintAsClang/PrintAsClang.h"
#include "ModuleContentsWriter.h" #include "ModuleContentsWriter.h"
#include "OutputLanguageMode.h"
#include "swift/AST/ASTContext.h" #include "swift/AST/ASTContext.h"
#include "swift/AST/Module.h" #include "swift/AST/Module.h"
@@ -27,12 +28,14 @@
using namespace swift; using namespace swift;
static void writePrologue(raw_ostream &out, ASTContext &ctx, static void writePrologue(raw_ostream &out, ASTContext &ctx,
StringRef macroGuard) { StringRef macroGuard, OutputLanguageMode Lang) {
out << "// Generated by " << version::getSwiftFullVersion( out << "// Generated by "
ctx.LangOpts.EffectiveLanguageVersion) << "\n" << version::getSwiftFullVersion(ctx.LangOpts.EffectiveLanguageVersion)
// Guard against recursive definition. << "\n"
<< "#ifndef " << macroGuard << "\n" // Guard against recursive definition.
<< "#define " << macroGuard << "\n" << "#ifndef " << macroGuard << "\n"
<< "#define " << macroGuard
<< "\n"
"#pragma clang diagnostic push\n" "#pragma clang diagnostic push\n"
"#pragma clang diagnostic ignored \"-Wgcc-compat\"\n" "#pragma clang diagnostic ignored \"-Wgcc-compat\"\n"
"\n" "\n"
@@ -53,12 +56,18 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"# include <swift/objc-prologue.h>\n" "# include <swift/objc-prologue.h>\n"
"#endif\n" "#endif\n"
"\n" "\n"
"#pragma clang diagnostic ignored \"-Wauto-import\"\n" "#pragma clang diagnostic ignored \"-Wauto-import\"\n";
"#include <Foundation/Foundation.h>\n" if (Lang == OutputLanguageMode::Cxx) {
"#include <stdint.h>\n" out << "#include <cstdint>\n"
"#include <stddef.h>\n" "#include <cstddef>\n"
"#include <stdbool.h>\n" "#include <cstdbool>\n";
"\n" } else {
out << "#include <Foundation/Foundation.h>\n"
"#include <stdint.h>\n"
"#include <stddef.h>\n"
"#include <stdbool.h>\n";
}
out << "\n"
"#if !defined(SWIFT_TYPEDEFS)\n" "#if !defined(SWIFT_TYPEDEFS)\n"
"# define SWIFT_TYPEDEFS 1\n" "# define SWIFT_TYPEDEFS 1\n"
"# if __has_include(<uchar.h>)\n" "# if __has_include(<uchar.h>)\n"
@@ -95,19 +104,19 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"\n" "\n"
"#if __has_attribute(objc_runtime_name)\n" "#if __has_attribute(objc_runtime_name)\n"
"# define SWIFT_RUNTIME_NAME(X) " "# define SWIFT_RUNTIME_NAME(X) "
"__attribute__((objc_runtime_name(X)))\n" "__attribute__((objc_runtime_name(X)))\n"
"#else\n" "#else\n"
"# define SWIFT_RUNTIME_NAME(X)\n" "# define SWIFT_RUNTIME_NAME(X)\n"
"#endif\n" "#endif\n"
"#if __has_attribute(swift_name)\n" "#if __has_attribute(swift_name)\n"
"# define SWIFT_COMPILE_NAME(X) " "# define SWIFT_COMPILE_NAME(X) "
"__attribute__((swift_name(X)))\n" "__attribute__((swift_name(X)))\n"
"#else\n" "#else\n"
"# define SWIFT_COMPILE_NAME(X)\n" "# define SWIFT_COMPILE_NAME(X)\n"
"#endif\n" "#endif\n"
"#if __has_attribute(objc_method_family)\n" "#if __has_attribute(objc_method_family)\n"
"# define SWIFT_METHOD_FAMILY(X) " "# define SWIFT_METHOD_FAMILY(X) "
"__attribute__((objc_method_family(X)))\n" "__attribute__((objc_method_family(X)))\n"
"#else\n" "#else\n"
"# define SWIFT_METHOD_FAMILY(X)\n" "# define SWIFT_METHOD_FAMILY(X)\n"
"#endif\n" "#endif\n"
@@ -122,7 +131,8 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"# define SWIFT_RELEASES_ARGUMENT\n" "# define SWIFT_RELEASES_ARGUMENT\n"
"#endif\n" "#endif\n"
"#if __has_attribute(warn_unused_result)\n" "#if __has_attribute(warn_unused_result)\n"
"# define SWIFT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))\n" "# define SWIFT_WARN_UNUSED_RESULT "
"__attribute__((warn_unused_result))\n"
"#else\n" "#else\n"
"# define SWIFT_WARN_UNUSED_RESULT\n" "# define SWIFT_WARN_UNUSED_RESULT\n"
"#endif\n" "#endif\n"
@@ -143,41 +153,41 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"#if !defined(SWIFT_CLASS)\n" "#if !defined(SWIFT_CLASS)\n"
"# if __has_attribute(objc_subclassing_restricted)\n" "# if __has_attribute(objc_subclassing_restricted)\n"
"# define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) " "# define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) "
"__attribute__((objc_subclassing_restricted)) " "__attribute__((objc_subclassing_restricted)) "
"SWIFT_CLASS_EXTRA\n" "SWIFT_CLASS_EXTRA\n"
"# define SWIFT_CLASS_NAMED(SWIFT_NAME) " "# define SWIFT_CLASS_NAMED(SWIFT_NAME) "
"__attribute__((objc_subclassing_restricted)) " "__attribute__((objc_subclassing_restricted)) "
"SWIFT_COMPILE_NAME(SWIFT_NAME) " "SWIFT_COMPILE_NAME(SWIFT_NAME) "
"SWIFT_CLASS_EXTRA\n" "SWIFT_CLASS_EXTRA\n"
"# else\n" "# else\n"
"# define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) " "# define SWIFT_CLASS(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) "
"SWIFT_CLASS_EXTRA\n" "SWIFT_CLASS_EXTRA\n"
"# define SWIFT_CLASS_NAMED(SWIFT_NAME) " "# define SWIFT_CLASS_NAMED(SWIFT_NAME) "
"SWIFT_COMPILE_NAME(SWIFT_NAME) " "SWIFT_COMPILE_NAME(SWIFT_NAME) "
"SWIFT_CLASS_EXTRA\n" "SWIFT_CLASS_EXTRA\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_RESILIENT_CLASS)\n" "#if !defined(SWIFT_RESILIENT_CLASS)\n"
"# if __has_attribute(objc_class_stub)\n" "# if __has_attribute(objc_class_stub)\n"
"# define SWIFT_RESILIENT_CLASS(SWIFT_NAME) SWIFT_CLASS(SWIFT_NAME) " "# define SWIFT_RESILIENT_CLASS(SWIFT_NAME) SWIFT_CLASS(SWIFT_NAME) "
"__attribute__((objc_class_stub))\n" "__attribute__((objc_class_stub))\n"
"# define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) " "# define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) "
"__attribute__((objc_class_stub)) " "__attribute__((objc_class_stub)) "
"SWIFT_CLASS_NAMED(SWIFT_NAME)\n" "SWIFT_CLASS_NAMED(SWIFT_NAME)\n"
"# else\n" "# else\n"
"# define SWIFT_RESILIENT_CLASS(SWIFT_NAME) " "# define SWIFT_RESILIENT_CLASS(SWIFT_NAME) "
"SWIFT_CLASS(SWIFT_NAME)\n" "SWIFT_CLASS(SWIFT_NAME)\n"
"# define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) " "# define SWIFT_RESILIENT_CLASS_NAMED(SWIFT_NAME) "
"SWIFT_CLASS_NAMED(SWIFT_NAME)\n" "SWIFT_CLASS_NAMED(SWIFT_NAME)\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n"
"\n" "\n"
"#if !defined(SWIFT_PROTOCOL)\n" "#if !defined(SWIFT_PROTOCOL)\n"
"# define SWIFT_PROTOCOL(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) " "# define SWIFT_PROTOCOL(SWIFT_NAME) SWIFT_RUNTIME_NAME(SWIFT_NAME) "
"SWIFT_PROTOCOL_EXTRA\n" "SWIFT_PROTOCOL_EXTRA\n"
"# define SWIFT_PROTOCOL_NAMED(SWIFT_NAME) " "# define SWIFT_PROTOCOL_NAMED(SWIFT_NAME) "
"SWIFT_COMPILE_NAME(SWIFT_NAME) " "SWIFT_COMPILE_NAME(SWIFT_NAME) "
"SWIFT_PROTOCOL_EXTRA\n" "SWIFT_PROTOCOL_EXTRA\n"
"#endif\n" "#endif\n"
"\n" "\n"
"#if !defined(SWIFT_EXTENSION)\n" "#if !defined(SWIFT_EXTENSION)\n"
@@ -187,44 +197,46 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"#if !defined(OBJC_DESIGNATED_INITIALIZER)\n" "#if !defined(OBJC_DESIGNATED_INITIALIZER)\n"
"# if __has_attribute(objc_designated_initializer)\n" "# if __has_attribute(objc_designated_initializer)\n"
"# define OBJC_DESIGNATED_INITIALIZER " "# define OBJC_DESIGNATED_INITIALIZER "
"__attribute__((objc_designated_initializer))\n" "__attribute__((objc_designated_initializer))\n"
"# else\n" "# else\n"
"# define OBJC_DESIGNATED_INITIALIZER\n" "# define OBJC_DESIGNATED_INITIALIZER\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_ENUM_ATTR)\n" "#if !defined(SWIFT_ENUM_ATTR)\n"
"# if defined(__has_attribute) && " "# if defined(__has_attribute) && "
"__has_attribute(enum_extensibility)\n" "__has_attribute(enum_extensibility)\n"
"# define SWIFT_ENUM_ATTR(_extensibility) " "# define SWIFT_ENUM_ATTR(_extensibility) "
"__attribute__((enum_extensibility(_extensibility)))\n" "__attribute__((enum_extensibility(_extensibility)))\n"
"# else\n" "# else\n"
"# define SWIFT_ENUM_ATTR(_extensibility)\n" "# define SWIFT_ENUM_ATTR(_extensibility)\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_ENUM)\n" "#if !defined(SWIFT_ENUM)\n"
"# define SWIFT_ENUM(_type, _name, _extensibility) " "# define SWIFT_ENUM(_type, _name, _extensibility) "
"enum _name : _type _name; " "enum _name : _type _name; "
"enum SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA " "enum SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA "
"_name : _type\n" "_name : _type\n"
"# if __has_feature(generalized_swift_name)\n" "# if __has_feature(generalized_swift_name)\n"
"# define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, " "# define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, "
"_extensibility) " "_extensibility) "
"enum _name : _type _name SWIFT_COMPILE_NAME(SWIFT_NAME); " "enum _name : _type _name SWIFT_COMPILE_NAME(SWIFT_NAME); "
"enum SWIFT_COMPILE_NAME(SWIFT_NAME) " "enum SWIFT_COMPILE_NAME(SWIFT_NAME) "
"SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA _name : _type\n" "SWIFT_ENUM_ATTR(_extensibility) SWIFT_ENUM_EXTRA _name : _type\n"
"# else\n" "# else\n"
"# define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, " "# define SWIFT_ENUM_NAMED(_type, _name, SWIFT_NAME, "
"_extensibility) SWIFT_ENUM(_type, _name, _extensibility)\n" "_extensibility) SWIFT_ENUM(_type, _name, _extensibility)\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_UNAVAILABLE)\n" "#if !defined(SWIFT_UNAVAILABLE)\n"
"# define SWIFT_UNAVAILABLE __attribute__((unavailable))\n" "# define SWIFT_UNAVAILABLE __attribute__((unavailable))\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_UNAVAILABLE_MSG)\n" "#if !defined(SWIFT_UNAVAILABLE_MSG)\n"
"# define SWIFT_UNAVAILABLE_MSG(msg) __attribute__((unavailable(msg)))\n" "# define SWIFT_UNAVAILABLE_MSG(msg) "
"__attribute__((unavailable(msg)))\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_AVAILABILITY)\n" "#if !defined(SWIFT_AVAILABILITY)\n"
"# define SWIFT_AVAILABILITY(plat, ...) __attribute__((availability(plat, __VA_ARGS__)))\n" "# define SWIFT_AVAILABILITY(plat, ...) "
"__attribute__((availability(plat, __VA_ARGS__)))\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_WEAK_IMPORT)\n" "#if !defined(SWIFT_WEAK_IMPORT)\n"
"# define SWIFT_WEAK_IMPORT __attribute__((weak_import))\n" "# define SWIFT_WEAK_IMPORT __attribute__((weak_import))\n"
@@ -233,24 +245,27 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
"# define SWIFT_DEPRECATED __attribute__((deprecated))\n" "# define SWIFT_DEPRECATED __attribute__((deprecated))\n"
"#endif\n" "#endif\n"
"#if !defined(SWIFT_DEPRECATED_MSG)\n" "#if !defined(SWIFT_DEPRECATED_MSG)\n"
"# define SWIFT_DEPRECATED_MSG(...) __attribute__((deprecated(__VA_ARGS__)))\n" "# define SWIFT_DEPRECATED_MSG(...) "
"__attribute__((deprecated(__VA_ARGS__)))\n"
"#endif\n" "#endif\n"
"#if __has_feature(attribute_diagnose_if_objc)\n" "#if __has_feature(attribute_diagnose_if_objc)\n"
"# define SWIFT_DEPRECATED_OBJC(Msg) __attribute__((diagnose_if(1, Msg, \"warning\")))\n" "# define SWIFT_DEPRECATED_OBJC(Msg) __attribute__((diagnose_if(1, "
"Msg, \"warning\")))\n"
"#else\n" "#else\n"
"# define SWIFT_DEPRECATED_OBJC(Msg) SWIFT_DEPRECATED_MSG(Msg)\n" "# define SWIFT_DEPRECATED_OBJC(Msg) SWIFT_DEPRECATED_MSG(Msg)\n"
"#endif\n" "#endif\n";
"#if !defined(IBSegueAction)\n" if (Lang == OutputLanguageMode::ObjC) {
"# define IBSegueAction\n" out << "#if !defined(IBSegueAction)\n"
"#endif\n" "# define IBSegueAction\n"
"#if !defined(SWIFT_EXTERN)\n" "#endif\n";
}
out << "#if !defined(SWIFT_EXTERN)\n"
"# if defined(__cplusplus)\n" "# if defined(__cplusplus)\n"
"# define SWIFT_EXTERN extern \"C\"\n" "# define SWIFT_EXTERN extern \"C\"\n"
"# else\n" "# else\n"
"# define SWIFT_EXTERN extern\n" "# define SWIFT_EXTERN extern\n"
"# endif\n" "# endif\n"
"#endif\n" "#endif\n";
;
static_assert(SWIFT_MAX_IMPORTED_SIMD_ELEMENTS == 4, static_assert(SWIFT_MAX_IMPORTED_SIMD_ELEMENTS == 4,
"need to add SIMD typedefs here if max elements is increased"); "need to add SIMD typedefs here if max elements is increased");
} }
@@ -401,7 +416,8 @@ bool swift::printAsObjC(raw_ostream &os, ModuleDecl *M,
std::string moduleContentsBuf; std::string moduleContentsBuf;
llvm::raw_string_ostream moduleContents{moduleContentsBuf}; llvm::raw_string_ostream moduleContents{moduleContentsBuf};
printModuleContentsAsObjC(moduleContents, imports, *M); printModuleContentsAsObjC(moduleContents, imports, *M);
writePrologue(os, M->getASTContext(), computeMacroGuard(M)); writePrologue(os, M->getASTContext(), computeMacroGuard(M),
OutputLanguageMode::ObjC);
writeImports(os, imports, *M, bridgingHeader); writeImports(os, imports, *M, bridgingHeader);
writePostImportPrologue(os, *M); writePostImportPrologue(os, *M);
os << moduleContents.str(); os << moduleContents.str();
@@ -413,9 +429,14 @@ bool swift::printAsObjC(raw_ostream &os, ModuleDecl *M,
bool swift::printAsCXX(raw_ostream &os, ModuleDecl *M) { bool swift::printAsCXX(raw_ostream &os, ModuleDecl *M) {
llvm::PrettyStackTraceString trace("While generating C++ header"); llvm::PrettyStackTraceString trace("While generating C++ header");
writePrologue(os, M->getASTContext(), computeMacroGuard(M)); SmallPtrSet<ImportModuleTy, 8> imports;
std::string moduleContentsBuf;
llvm::raw_string_ostream moduleContents{moduleContentsBuf};
printModuleContentsAsCxx(moduleContents, imports, *M);
writePrologue(os, M->getASTContext(), computeMacroGuard(M),
OutputLanguageMode::Cxx);
writePostImportPrologue(os, *M); writePostImportPrologue(os, *M);
// TODO (Alex): emit module contents. os << moduleContents.str();
writeEpilogue(os); writeEpilogue(os);
return false; return false;

14
test/PrintAsCxx/empty.swift
View File

@@ -2,7 +2,11 @@
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) %s -typecheck -emit-cxx-header-path %t/empty.h // RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) %s -typecheck -emit-cxx-header-path %t/empty.h
// RUN: %FileCheck %s < %t/empty.h // RUN: %FileCheck %s < %t/empty.h
// RUN: %check-in-clang++ -std=c++14 %t/empty.h
// RUN: %check-in-clang++ -std=c++17 %t/empty.h
// CHECK-NOT: @import Swift; // CHECK-NOT: @import Swift;
// CHECK-NOT: IBSegueAction
// CHECK-LABEL: #ifndef EMPTY_SWIFT_H // CHECK-LABEL: #ifndef EMPTY_SWIFT_H
// CHECK-NEXT: #define EMPTY_SWIFT_H // CHECK-NEXT: #define EMPTY_SWIFT_H
@@ -23,10 +27,9 @@
// CHECK-NEXT: # define __has_warning(x) 0 // CHECK-NEXT: # define __has_warning(x) 0
// CHECK-NEXT: #endif // CHECK-NEXT: #endif
// CHECK-LABEL: #include <Foundation/Foundation.h> // CHECK-LABEL: #include <cstdint>
// CHECK: #include <stdint.h> // CHECK: #include <cstddef>
// CHECK: #include <stddef.h> // CHECK: #include <cstdbool>
// CHECK: #include <stdbool.h>
// CHECK-LABEL: !defined(SWIFT_TYPEDEFS) // CHECK-LABEL: !defined(SWIFT_TYPEDEFS)
// CHECK-NEXT: # define SWIFT_TYPEDEFS 1 // CHECK-NEXT: # define SWIFT_TYPEDEFS 1
@@ -51,4 +54,7 @@
// CHECK: # define SWIFT_EXTENSION(M) // CHECK: # define SWIFT_EXTENSION(M)
// CHECK: # define OBJC_DESIGNATED_INITIALIZER // CHECK: # define OBJC_DESIGNATED_INITIALIZER
// CHECK-LABEL: namespace empty {
// CHECK: } // namespace empty
// CHECK-NOT: @ // CHECK-NOT: @

12
test/PrintAsCxx/lit.local.cfg Normal file
View File

@@ -0,0 +1,12 @@
# Make a local copy of the substitutions.
config.substitutions = list(config.substitutions)
config.substitutions.insert(0, ('%check-in-clang\+\+',
'%%clang --driver-mode=g++ -fsyntax-only -x c++-header '
'-Weverything -Werror -Wno-unused-macros -Wno-incomplete-module '
'-Wno-auto-import -Wno-variadic-macros -Wno-c++98-compat-pedantic '
'-Wno-poison-system-directories '
'-Wno-unused-command-line-argument ' # for -fmodules-cache-path
'-F %%clang-importer-sdk-path/frameworks '
'-I %%clang-include-dir '
'-isysroot %r/Inputs/clang-importer-sdk' % config.test_source_root) )