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// RUN: %empty-directory(%t)
// RUN: split-file %s %t
// RUN: %target-swift-frontend -typecheck %t/use-cxx-types.swift -typecheck -module-name UseCxx -emit-clang-header-path %t/UseCxx.h -I %t -enable-experimental-cxx-interop -clang-header-expose-decls=all-public -disable-availability-checking
// RUN: %target-interop-build-clangxx -std=c++20 -c %t/use-swift-cxx-types.cpp -I %t -o %t/swift-cxx-execution.o
// RUN: %target-interop-build-swift %t/use-cxx-types.swift -o %t/swift-cxx-execution -Xlinker %t/swift-cxx-execution.o -module-name UseCxx -Xfrontend -entry-point-function-name -Xfrontend swiftMain -I %t -O -Xfrontend -disable-availability-checking
// RUN: %target-codesign %t/swift-cxx-execution
// RUN: %target-run %t/swift-cxx-execution | %FileCheck %s
// REQUIRES: executable_test
//--- header.h
#include <stdio.h>
struct Trivial {
int x, y;
inline Trivial(int x, int y) : x(x), y(y) {}
};
template<class T>
struct NonTrivialTemplate {
T x;
inline NonTrivialTemplate(T x) : x(x) {
puts("create NonTrivialTemplate");
}
inline NonTrivialTemplate(const NonTrivialTemplate<T> &other) : x(other.x) {
puts("copy NonTrivialTemplate");
}
inline NonTrivialTemplate(NonTrivialTemplate<T> &&other) : x(static_cast<T &&>(other.x)) {
puts("move NonTrivialTemplate");
}
inline ~NonTrivialTemplate() {
puts("~NonTrivialTemplate");
}
inline void testPrint() const {
puts("testPrint");
}
};
using NonTrivialTemplateTrivial = NonTrivialTemplate<Trivial>;
class ImmortalFRT {
public:
int x;
} __attribute__((swift_attr("import_reference")))
__attribute__((swift_attr("retain:immortal")))
__attribute__((swift_attr("release:immortal")));
class SharedFRT {
public:
SharedFRT() {}
SharedFRT(int x) : x(x) {}
int x;
} __attribute__((swift_attr("import_reference")))
__attribute__((swift_attr("retain:retainShared")))
__attribute__((swift_attr("release:releaseShared")));
inline void retainShared(SharedFRT *r) { puts("retainShared"); }
inline void releaseShared(SharedFRT *r) { puts("releaseShared"); }
inline SharedFRT* createSharedFRT() { return new SharedFRT(); }
//--- module.modulemap
module CxxTest {
header "header.h"
requires cplusplus
}
//--- use-cxx-types.swift
import CxxTest
public func consumeNonTrivial(_ x: consuming NonTrivialTemplateTrivial) -> CInt {
print("x and y: \(x.x.x), \(x.x.y)")
return x.x.x
}
public struct TakesNonTrivial {
public init(_ x: NonTrivialTemplateTrivial) {
self.prop = x
}
public var prop: NonTrivialTemplateTrivial
}
public func consumeImmortalFRT(_ x: consuming ImmortalFRT) {
print("immortal frt x \(x.x)")
}
public func consumeSharedFRT(_ x : consuming SharedFRT) {
print("consume shared frt x \(x.x)")
}
public func takeSharedFRT(_ x : SharedFRT) {
print("take shared frt x \(x.x)")
}
public func genericConsumingFunc<T>(_ p: consuming T) {
print("generic consuming function")
}
public func returnSharedFRT(_ x : SharedFRT) -> SharedFRT {
print("return shared frt x \(x.x)")
return x
}
public func returnSharedFRT2() -> SharedFRT {
return createSharedFRT()
}
public struct ValueWrapper {
let sharedFRT: SharedFRT
public init(_ x: SharedFRT) {
self.sharedFRT = x
}
}
public func consumeValueWrapper(_ x: consuming ValueWrapper) {
print("return shared frt x \(x.sharedFRT.x)")
}
//--- use-swift-cxx-types.cpp
#include "header.h"
#include "UseCxx.h"
#include <assert.h>
int main() {
{
auto x = NonTrivialTemplate(Trivial(1, 2));
UseCxx::consumeNonTrivial(x);
puts("DoneCall");
}
// CHECK: create NonTrivialTemplate
// CHECK-NEXT: copy NonTrivialTemplate
// CHECK-NEXT: x and y: 1, 2
// CHECK-NEXT: ~NonTrivialTemplate
// CHECK-NEXT: DoneCall
// CHECK-NEXT: ~NonTrivialTemplate
{
auto x = NonTrivialTemplate(Trivial(-4, 0));
puts("call");
auto swiftVal = UseCxx::TakesNonTrivial::init(x);
puts("DoneCall");
swiftVal.setProp(x);
}
// CHECK-NEXT: create NonTrivialTemplate
// CHECK-NEXT: call
// CHECK-NEXT: copy NonTrivialTemplate
// CHECK-NEXT: copy NonTrivialTemplate
// CHECK-NEXT: ~NonTrivialTemplate
// CHECK-NEXT: DoneCall
// CHECK-NEXT: copy NonTrivialTemplate
// CHECK-NEXT: ~NonTrivialTemplate
// CHECK-NEXT: copy NonTrivialTemplate
// CHECK-NEXT: ~NonTrivialTemplate
// CHECK-NEXT: ~NonTrivialTemplate
// CHECK-NEXT: ~NonTrivialTemplate
{
ImmortalFRT frt;
frt.x = 2;
UseCxx::consumeImmortalFRT(&frt);
}
// CHECK-NEXT: immortal frt x 2
{
SharedFRT sfrt;
sfrt.x = 2;
UseCxx::takeSharedFRT(&sfrt);
// CHECK-NEXT: retainShared
// CHECK-NEXT: releaseShared
// CHECK-NEXT: take shared frt x 2
UseCxx::consumeSharedFRT(&sfrt);
// CHECK-NEXT: retainShared
// CHECK-NEXT: releaseShared
// CHECK-NEXT: consume shared frt x 2
SharedFRT *sfrtptr = UseCxx::returnSharedFRT(&sfrt);
// CHECK-NEXT: retainShared
// CHECK-NEXT: return shared frt x 2
SharedFRT *sfrtptr2 = UseCxx::returnSharedFRT2();
// No retain or release here.
}
{
SharedFRT sfrt;
sfrt.x = 4;
auto wrapper = UseCxx::ValueWrapper::init(&sfrt);
// consumeValueWrapper creates a defensive copy in the thunk.
UseCxx::consumeValueWrapper(wrapper);
// CHECK-NEXT: retainShared
// CHECK-NEXT: retainShared
// CHECK-NEXT: releaseShared
// CHECK-NEXT: return shared frt x 4
// CHECK-NEXT: releaseShared
}
{
SharedFRT sfrt;
sfrt.x = 4;
auto wrapper = UseCxx::ValueWrapper::init(&sfrt);
UseCxx::genericConsumingFunc(wrapper);
// CHECK-NEXT: retainShared
// CHECK-NEXT: retainShared
// CHECK-DAG: releaseShared
// CHECK-DAG: generic consuming function
// CHECK-NEXT: releaseShared
}
puts("EndOfTest");
// CHECK-NEXT: EndOfTest
return 0;
}
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