YES.

您可以混合使用

Swift

C

C++

Objective-C

Objective-C++

Xpre

C

// Declaration: C.h#ifndef C_h#define C_h#ifdef __cplusplusextern "C" {#endif    void hello_c(const char * name);#ifdef __cplusplus}#endif#endif // Definition: C.c#include "C.h"#include <stdio.h>void hello_c(const char * name) {    printf("Hello %s in Cn", name);}

C++

// Declaration: CPP.hpp#pragma once#include <string>class CPP {public:    void hello_cpp(const std::string& name);};// Definition: CPP.cpp#include "CPP.hpp"#include <iostream>using namespace std;void CPP::hello_cpp(const std::string& name) {    cout << "Hello " << name << " in C++" << endl;}

Objective-C wrapper for C++

// Declaration: CPP-Wrapper.h#import <Foundation/Foundation.h>@interface CPP_Wrapper : NSObject- (void)hello_cpp_wrapped:(NSString *)name;@end// Definition: CPP-Wrapper.mm#import "CPP-Wrapper.h"#include "CPP.hpp"@implementation CPP_Wrapper- (void)hello_cpp_wrapped:(NSString *)name {    CPP cpp;    cpp.hello_cpp([name cStringUsingEncoding:NSUTF8StringEncoding]);}@end

Objective-C

// Declaration: Objective-C.h#import <Foundation/Foundation.h>@interface Objective_C : NSObject- (void)hello_objectiveC:(NSString *)name;@end// Definition: Objective-C.m#import "Objective-C.h"@implementation Objective_C- (void)hello_objectiveC:(NSString*)name {    printf("Hello %s in Objective-Cn", [name cStringUsingEncoding:NSUTF8StringEncoding]);}@end

Objective-C++

// Declaration: Objective-CPP.h#import <Foundation/Foundation.h>@interface Objective_CPP : NSObject- (void)hello_objectiveCpp:(NSString *)name;@end// Definition: Objective-CPP.mm#include <iostream>#import "Objective-CPP.h"using namespace std;@implementation Objective_CPP- (void)hello_objectiveCpp:(NSString *)name {    cout << "Hello " << [name cStringUsingEncoding:NSUTF8StringEncoding] << " in Objective-C++n";}@end

Swift

// Declaration & definition: Swift.swiftfunc hello_swift(_ name: String) {    print("Hello (name) in Swift")}

Bridging-Header.h

Cannot import

CPP.hpp

class

#import "C.h"#import "CPP-Wrapper.h"#import "Objective-C.h"#import "Objective-CPP.h"

Invocation from Swift

// Invoke Chello_c("World".cStringUsingEncoding(NSUTF8StringEncoding))// Can't Invoke C++ without a wrapper// CPP().hello_cpp("World".cStringUsingEncoding(NSUTF8StringEncoding))// Invoke C++ through Objective-CCPP_Wrapper().hello_cpp_wrapped("World")// Invoke Objective-CObjective_C().hello_objectiveC("World")// Invoke Objective-C++Objective_CPP().hello_objectiveCpp("World")// Invoke SwiftSwift().hello_swift("World")

.h (Headers)

(See item 3 in this Stack Overflow
answer)

.h: this is the tricky part, since they are ambiguously used for all flavors
of C, or not, Objective or not. When a .h does not contain a single C
keyword, like class, it can be added to the …Bridging-Header.h, and will
expose whatever function the corresponding .c or .cpp functionalities it
declares. Otherwise, that header must be wrapped in either a pure C or
Objective-C API.

Output

Hello World in CHello World in C++Hello World in Objective-CHello World in Objective-C++Hello World in Swift

Comments

Cy-4AH :

Yes. You only need wrap

C++

C

Objective-C

Swift

Tommy

Indeed, I have a project that does exactly that.

C++

C

Objective-C

C++

Swift

Swift

NSdocument

C

MaddTheSane

Added the

extern "C"

void hello_c(const char * name)

hello_cpp(const std::string& name)

#include "C.h"

hello_c(name.c_str());

Keith Adler

The newSO-32541268: Now
with parameters!

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on Swift Recipes.