Convert FlashRuntimeExtensions.h from C++ to Golang/Rust for ANE development within Golang/Rust

al-sabr commented 2 years ago

Description

We all use C++ right now for ANE development but it is also possible to write DLLs & SO directly from Golang. It is much more easy developing in Golang than in C++ IMHO and we could also have access to an amazing range of libraries from the Go world in a instant inside of AS3.

Will this change the current API? How?

Not really but it will need further exploration and writing code and examples for people to learn

Who will benefit from this feature?

ANE developers

al-sabr commented 2 years ago

I used this project to generate part of the transpiling https://github.com/elliotchance/c2go

Which give this result:

/*
    Package main - transpiled by c2go version: v0.26.0 Erbium 2020-03-17

    If you have found any issues, please raise an issue at:
    https://github.com/elliotchance/c2go/
*/

package main

import "unsafe"

type uintptr_t uint32
type va_list *byte
type size_t uint32
type ptrdiff_t int32
type intptr_t int32
type __vcrt_bool int8
type wchar_t uint16
type int8_t int8
type int16_t int16
type int32_t int32
type int64_t int64
type uint8_t uint8
type uint16_t uint16
type uint32_t uint32
type uint64_t uint64
type int_least8_t int8
type int_least16_t int16
type int_least32_t int32
type int_least64_t int64
type uint_least8_t uint8
type uint_least16_t uint16
type uint_least32_t uint32
type uint_least64_t uint64
type int_fast8_t int8
type int_fast16_t int32
type int_fast32_t int32
type int_fast64_t int64
type uint_fast8_t uint8
type uint_fast16_t uint32
type uint_fast32_t uint32
type uint_fast64_t uint64
type intmax_t int64
type uintmax_t uint64
type FREContext unsafe.Pointer
type FREObject unsafe.Pointer
type FREFunction func(FREContext, unsafe.Pointer, uint32, *FREObject) FREObject
type FRENamedFunction_ struct {
    name         *uint8
    functionData unsafe.Pointer
    function     FREFunction
}
type FRENamedFunction FRENamedFunction_
type FREContextInitializer func(unsafe.Pointer, *uint8, FREContext, *uint32, **FRENamedFunction)
type FREContextFinalizer func(FREContext)
type FREInitializer func(*unsafe.Pointer, FREContextInitializer, FREContextFinalizer)
type FREFinalizer func(unsafe.Pointer)

const FRE_OK int32 = 0
const FRE_NO_SUCH_NAME int32 = 1
const FRE_INVALID_OBJECT int32 = 2
const FRE_TYPE_MISMATCH int32 = 3
const FRE_ACTIONSCRIPT_ERROR int32 = 4
const FRE_INVALID_ARGUMENT int32 = 5
const FRE_READ_ONLY int32 = 6
const FRE_WRONG_THREAD int32 = 7
const FRE_ILLEGAL_STATE int32 = 8
const FRE_INSUFFICIENT_MEMORY int32 = 9
const FREResult_ENUMPADDING int32 = 1048575

type FREResult int32

const FRE_TYPE_OBJECT int32 = 0
const FRE_TYPE_NUMBER int32 = 1
const FRE_TYPE_STRING int32 = 2
const FRE_TYPE_BYTEARRAY int32 = 3
const FRE_TYPE_ARRAY int32 = 4
const FRE_TYPE_VECTOR int32 = 5
const FRE_TYPE_BITMAPDATA int32 = 6
const FRE_TYPE_BOOLEAN int32 = 7
const FRE_TYPE_NULL int32 = 8
const FREObjectType_ENUMPADDING int32 = 1048575

type FREObjectType int32
type FREBitmapData struct {
    width           uint32
    height          uint32
    hasAlpha        uint32
    isPremultiplied uint32
    lineStride32    uint32
    bits32          *uint32
}
type FREBitmapData2 struct {
    width           uint32
    height          uint32
    hasAlpha        uint32
    isPremultiplied uint32
    lineStride32    uint32
    isInvertedY     uint32
    bits32          *uint32
}
type FREByteArray struct {
    length uint32
    bytes  *uint8
}

al-sabr commented 2 years ago

As you can see there are some missing elements:

// ADOBE CONFIDENTIAL
//
// Copyright 2011 Adobe Systems Incorporated All Rights Reserved.
//
// NOTICE: All information contained herein is, and remains the property of
// Adobe Systems Incorporated and its suppliers, if any. The intellectual and
// technical concepts contained herein are proprietary to Adobe Systems
// Incorporated and its suppliers and may be covered by U.S. and Foreign
// Patents, patents in process, and are protected by trade secret or copyright
// law. Dissemination of this information or reproduction of this material
// is strictly forbidden unless prior written permission is obtained from
// Adobe Systems Incorporated.

// AdobePatentID="P969E1"

#ifdef WIN32
    typedef unsigned __int32    uint32_t;
    typedef unsigned __int8     uint8_t;
    typedef          __int32    int32_t;
#else
    #include <stdint.h>
#endif

#ifndef FRNATIVEEXTENSIONS_H_
#define FRNATIVEEXTENSIONS_H_

#ifdef __cplusplus
extern "C" {
#endif

typedef void *      FREContext;
typedef void *      FREObject;

/* Initialization *************************************************************/

/**
 * Defines the signature for native calls that can be invoked via an
 * instance of the AS ExtensionContext class.
 *
 * @return    The return value corresponds to the return value
 *            from the AS ExtensionContext class call() method. It defaults to
 *            FRE_INVALID_OBJECT, which is reported as null in AS.
 */

typedef FREObject (*FREFunction)(
        FREContext ctx,
        void*      functionData,
        uint32_t   argc,
        FREObject  argv[]
);

typedef struct FRENamedFunction_ {
    const uint8_t* name;
    void*          functionData;
    FREFunction    function;
} FRENamedFunction;

/**
 * Defines the signature for the initializer that is called each time
 * a new AS ExtensionContext object is created.
 *
 * @param extData The extension client data provided to the FREInitializer function as extDataToSet.
 *
 * @param ctxType Pointer to the contextType string (UTF8) as provided to the AS createExtensionContext call.
 *
 * @param ctx The FREContext being initialized.
 *
 * @param numFunctionsToSet The number of elements in the functionsToSet array.
 *
 * @param functionsToSet A pointer to an array of FRENamedFunction elements.
 */

typedef void (*FREContextInitializer)(
        void*                    extData          ,
        const uint8_t*           ctxType          ,
        FREContext               ctx              ,
        uint32_t*                numFunctionsToSet,
        const FRENamedFunction** functionsToSet
);

/**
 * Defines the signature for the finalizer that is called each time
 * an ExtensionContext instance is disposed.
 */

typedef void (*FREContextFinalizer)(
        FREContext ctx
);

/**
 * The initialization function provided by each extension must conform
 * to the following signature.
 *
 * @param extDataToSet Provided for the extension to store per-extension instance data. 
 *            For example, if the extension creates
 *            globals per-instance, it can store a pointer to them here.
 *
 * @param ctxInitializerToSet Must be set to a pointer to a function
 *            of type FREContextInitializer. Will be invoked whenever
 *            the ActionScript code creates a new context for this extension.
 *
 * @param ctxFinalizerToSet Must be set to a pointer to a function
 *            of type FREContextFinalizer.
 */

typedef void (*FREInitializer)(
        void**                 extDataToSet       ,
        FREContextInitializer* ctxInitializerToSet,
        FREContextFinalizer*   ctxFinalizerToSet
);

/** 
 * Called iff the extension is unloaded from the process. Extensions
 * are not guaranteed to be unloaded; the runtime process may exit without
 * doing so.
 */

typedef void (*FREFinalizer)(
        void* extData
);

/* Result Codes ***************************************************************/
/** 
 * These values must not be changed.
 */

typedef enum {
    FRE_OK                  = 0,
    FRE_NO_SUCH_NAME        = 1,
    FRE_INVALID_OBJECT      = 2,
    FRE_TYPE_MISMATCH       = 3,
    FRE_ACTIONSCRIPT_ERROR  = 4,
    FRE_INVALID_ARGUMENT    = 5,
    FRE_READ_ONLY           = 6,
    FRE_WRONG_THREAD        = 7,
    FRE_ILLEGAL_STATE       = 8,
    FRE_INSUFFICIENT_MEMORY = 9,
    FREResult_ENUMPADDING   = 0xfffff /* will ensure that C and C++ treat this enum as the same size. */
} FREResult;

/* Context Data ************************************************************/

/**
 * @returns FRE_OK
 *          FRE_WRONG_THREAD
 *          FRE_INVALID_ARGUMENT If nativeData is null.
 */

FREResult FREGetContextNativeData( FREContext ctx, void** nativeData );

/**
 * @returns FRE_OK
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 */

FREResult FRESetContextNativeData( FREContext ctx, void*  nativeData );

/**
 * @returns FRE_OK
 *          FRE_WRONG_THREAD
 *          FRE_INVALID_ARGUMENT If actionScriptData is null.
 */

FREResult FREGetContextActionScriptData( FREContext ctx, FREObject *actionScriptData );

/**
 * @returns FRE_OK
 *          FRE_WRONG_THREAD
 */

FREResult FRESetContextActionScriptData( FREContext ctx, FREObject  actionScriptData );

/* Primitive Types ************************************************************/
/**
 * These values must not be changed.
 */

typedef enum {
    FRE_TYPE_OBJECT           = 0,
    FRE_TYPE_NUMBER           = 1,
    FRE_TYPE_STRING           = 2,
    FRE_TYPE_BYTEARRAY        = 3,
    FRE_TYPE_ARRAY            = 4,
    FRE_TYPE_VECTOR           = 5,
    FRE_TYPE_BITMAPDATA       = 6,
    FRE_TYPE_BOOLEAN          = 7,
    FRE_TYPE_NULL             = 8,
    FREObjectType_ENUMPADDING = 0xfffff /* will ensure that C and C++ treat this enum as the same size. */
} FREObjectType;

/**
 * @returns FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_WRONG_THREAD
 *          FRE_INVALID_ARGUMENT If objectType is null.
 */

FREResult FREGetObjectType( FREObject object, FREObjectType *objectType );

/**
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 */

FREResult FREGetObjectAsInt32 ( FREObject object, int32_t  *value );
FREResult FREGetObjectAsUint32( FREObject object, uint32_t *value );
FREResult FREGetObjectAsDouble( FREObject object, double   *value );
FREResult FREGetObjectAsBool  ( FREObject object, uint32_t *value );

/**
 * @return  FRE_OK
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 */

FREResult FRENewObjectFromInt32 ( int32_t  value, FREObject *object );
FREResult FRENewObjectFromUint32( uint32_t value, FREObject *object );
FREResult FRENewObjectFromDouble( double   value, FREObject *object );
FREResult FRENewObjectFromBool  ( uint32_t value, FREObject *object );

/**
 * Retrieves a string representation of the object referred to by
 * the given object. The referenced string is immutable and valid 
 * only for duration of the call to a registered function. If the 
 * caller wishes to keep the the string, they must keep a copy of it.
 *
 * @param object The string to be retrieved.
 *
 * @param length The size, in bytes, of the string. Includes the
 *               null terminator.
 *
 * @param value  A pointer to a possibly temporary copy of the string.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 */

FREResult FREGetObjectAsUTF8(
        FREObject       object,
        uint32_t*       length,
        const uint8_t** value
);

/** 
 * Creates a new String object that contains a copy of the specified
 * string.
 *
 * @param length The length, in bytes, of the original string. Must include
 *               the null terminator.
 *
 * @param value  A pointer to the original string.
 *
 * @param object Receives a reference to the new string object.
 * 
 * @return  FRE_OK
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 */

FREResult FRENewObjectFromUTF8(
        uint32_t        length,
        const uint8_t*  value ,
        FREObject*      object
);

/* Object Access **************************************************************/

/**
 * @param className UTF8-encoded name of the class being constructed.
 *
 * @param thrownException A pointer to a handle that can receive the handle of any ActionScript 
 *            Error thrown during execution. May be null if the caller does not
 *            want to receive this handle. If not null and no error occurs, is set an
 *            invalid handle value.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_ACTIONSCRIPT_ERROR If an ActionScript exception results from calling this method.
 *              In this case, thrownException will be set to the handle of the thrown value. 
 *          FRE_ILLEGAL_STATE If a ByteArray or BitmapData has been acquired and not yet released.
 *          FRE_NO_SUCH_NAME
 *          FRE_WRONG_THREAD
 */

FREResult FRENewObject(
        const uint8_t* className      ,
        uint32_t       argc           ,
        FREObject      argv[]         ,
        FREObject*     object         ,
        FREObject*     thrownException
);

/**
 * @param propertyName UTF8-encoded name of the property being fetched.
 *
 * @param thrownException A pointer to a handle that can receive the handle of any ActionScript 
 *            Error thrown during getting the property. May be null if the caller does not
 *            want to receive this handle. If not null and no error occurs, is set an
 *            invalid handle value.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *
 *          FRE_ACTIONSCRIPT_ERROR If an ActionScript exception results from getting this property.
 *              In this case, thrownException will be set to the handle of the thrown value. 
 *
 *          FRE_NO_SUCH_NAME If the named property doesn't exist, or if the reference is ambiguous
 *              because the property exists in more than one namespace.
 *
 *          FRE_ILLEGAL_STATE If a ByteArray or BitmapData has been acquired and not yet released.
 *
 *          FRE_WRONG_THREAD
 */

FREResult FREGetObjectProperty(
        FREObject       object         ,
        const uint8_t*  propertyName   ,
        FREObject*      propertyValue  ,
        FREObject*      thrownException
);

/**
 * @param propertyName UTF8-encoded name of the property being set.
 *
 * @param thrownException A pointer to a handle that can receive the handle of any ActionScript 
 *            Error thrown during method execution. May be null if the caller does not
 *            want to receive this handle. If not null and no error occurs, is set an
 *            invalid handle value.
 *
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_ACTIONSCRIPT_ERROR If an ActionScript exception results from getting this property.
 *              In this case, thrownException will be set to the handle of the thrown value. 
 *
 *          FRE_NO_SUCH_NAME If the named property doesn't exist, or if the reference is ambiguous
 *              because the property exists in more than one namespace.
 *
 *          FRE_ILLEGAL_STATE If a ByteArray or BitmapData has been acquired and not yet released.
 *
 *          FRE_READ_ONLY
 *          FRE_WRONG_THREAD
 */

FREResult FRESetObjectProperty(
        FREObject       object         ,
        const uint8_t*  propertyName   ,
        FREObject       propertyValue  ,
        FREObject*      thrownException
);

/**
 * @param methodName UTF8-encoded null-terminated name of the method being invoked.
 *
 * @param thrownException A pointer to a handle that can receive the handle of any ActionScript 
 *            Error thrown during method execution. May be null if the caller does not
 *            want to receive this handle. If not null and no error occurs, is set an
 *            invalid handle value.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_ACTIONSCRIPT_ERROR If an ActionScript exception results from calling this method.
 *              In this case, thrownException will be set to the handle of the thrown value. 
 *
 *          FRE_NO_SUCH_NAME If the named method doesn't exist, or if the reference is ambiguous
 *              because the method exists in more than one namespace.
 *
 *          FRE_ILLEGAL_STATE If a ByteArray or BitmapData has been acquired and not yet released.
 *
 *          FRE_WRONG_THREAD
 */

FREResult FRECallObjectMethod (
        FREObject      object         ,
        const uint8_t* methodName     ,
        uint32_t       argc           ,
        FREObject      argv[]         ,
        FREObject*     result         ,
        FREObject*     thrownException
);

/* BitmapData Access **********************************************************/

typedef struct {
    uint32_t  width;           /* width of the BitmapData bitmap */
    uint32_t  height;          /* height of the BitmapData bitmap */
    uint32_t  hasAlpha;        /* if non-zero, pixel format is ARGB32, otherwise pixel format is _RGB32, host endianness */
    uint32_t  isPremultiplied; /* pixel color values are premultiplied with alpha if non-zero, un-multiplied if zero */
    uint32_t  lineStride32;    /* line stride in number of 32 bit values, typically the same as width */
    uint32_t* bits32;          /* pointer to the first 32-bit pixel of the bitmap data */
} FREBitmapData;

typedef struct {
    uint32_t  width;           /* width of the BitmapData bitmap */
    uint32_t  height;          /* height of the BitmapData bitmap */
    uint32_t  hasAlpha;        /* if non-zero, pixel format is ARGB32, otherwise pixel format is _RGB32, host endianness */
    uint32_t  isPremultiplied; /* pixel color values are premultiplied with alpha if non-zero, un-multiplied if zero */
    uint32_t  lineStride32;    /* line stride in number of 32 bit values, typically the same as width */
    uint32_t  isInvertedY;     /* if non-zero, last row of pixels starts at bits32, otherwise, first row of pixels starts at bits32. */
    uint32_t* bits32;          /* pointer to the first 32-bit pixel of the bitmap data */
} FREBitmapData2;

/**
 * Referenced data is valid only for duration of the call
 * to a registered function.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 *          FRE_ILLEGAL_STATE
 */

FREResult FREAcquireBitmapData(
        FREObject      object         , 
        FREBitmapData* descriptorToSet
);

/**
 * Referenced data is valid only for duration of the call
 * to a registered function.
 *
 * Use of this API requires that the extension and application must be packaged for 
 * the 3.1 namespace or later.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 *          FRE_ILLEGAL_STATE
 */

FREResult FREAcquireBitmapData2(
        FREObject      object         , 
        FREBitmapData2* descriptorToSet
);

/**
 * BitmapData must be acquired to call this. Clients must invalidate any region
 * they modify in order to notify AIR of the changes. Only invalidated regions
 * are redrawn.
 *
 * @return  FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_WRONG_THREAD
 *          FRE_ILLEGAL_STATE
 *          FRE_TYPE_MISMATCH
 */

FREResult FREInvalidateBitmapDataRect(
        FREObject object,
        uint32_t x      ,
        uint32_t y      ,
        uint32_t width  ,
        uint32_t height
);
/**
 * @return  FRE_OK
 *          FRE_WRONG_THREAD
 *          FRE_ILLEGAL_STATE
 *          FRE_TYPE_MISMATCH
 */

FREResult FREReleaseBitmapData( FREObject object );

/**
 * Referenced data is valid only for duration of the call
 * to a registered function.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_WRONG_THREAD
 */

/* ByteArray Access ***********************************************************/

typedef struct {
    uint32_t length;
    uint8_t* bytes;
} FREByteArray;

/**
 * Referenced data is valid only for duration of the call
 * to a registered function.
 *
 * @return  FRE_OK
 *          FRE_TYPE_MISMATCH
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_WRONG_THREAD
 *          FRE_ILLEGAL_STATE
 */

FREResult FREAcquireByteArray(
    FREObject     object        ,
    FREByteArray* byteArrayToSet
);

/**
 * @return  FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_ILLEGAL_STATE
 *          FRE_WRONG_THREAD
 */

FREResult FREReleaseByteArray( FREObject object );

/* Array and Vector Access ****************************************************/

/**
 * @return  FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_INVALID_ARGUMENT
 *          FRE_ILLEGAL_STATE
 *          FRE_TYPE_MISMATCH
 *          FRE_WRONG_THREAD
 */

FREResult FREGetArrayLength(
        FREObject  arrayOrVector,
        uint32_t*  length
);

/**
 * @return  FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_TYPE_MISMATCH
 *          FRE_ILLEGAL_STATE
 *          FRE_INVALID_ARGUMENT If length is greater than 2^32.
 *
 *          FRE_READ_ONLY   If the handle refers to a Vector
 *              of fixed size.
 *
 *          FRE_WRONG_THREAD
 *          FRE_INSUFFICIENT_MEMORY
 */

FREResult FRESetArrayLength(
        FREObject  arrayOrVector,
        uint32_t   length
);

/**
 * If an Array is sparse and an element that isn't defined is requested, the
 * return value will be FRE_OK but the handle value will be invalid.
 *
 * @return  FRE_OK
 *          FRE_ILLEGAL_STATE
 *
 *          FRE_INVALID_ARGUMENT If the handle refers to a vector and the index is
 *              greater than the size of the array.
 *
 *          FRE_INVALID_OBJECT
 *          FRE_TYPE_MISMATCH
 *          FRE_WRONG_THREAD
 */

FREResult FREGetArrayElementAt(
        FREObject  arrayOrVector,
        uint32_t   index        ,
        FREObject* value
);

/**
 *
 * @return  FRE_OK
 *          FRE_INVALID_OBJECT
 *          FRE_ILLEGAL_STATE
 *
 *          FRE_TYPE_MISMATCH If an attempt to made to set a value in a Vector
 *              when the type of the value doesn't match the Vector's item type.
 *
 *          FRE_WRONG_THREAD
 */

FREResult FRESetArrayElementAt(
        FREObject  arrayOrVector,
        uint32_t   index        ,
        FREObject  value
);

/* Callbacks ******************************************************************/

/** 
 * Causes a StatusEvent to be dispatched from the associated
 * ExtensionContext object.
 *
 * Dispatch happens asynchronously, even if this is called during
 * a call to a registered function.
 *
 * The ActionScript portion of this extension can listen for that event
 * and, upon receipt, query the native portion for details of the event
 * that occurred.
 *
 * This call is thread-safe and may be invoked from any thread. The string
 * values are copied before the call returns.
 *
 * @return  FRE_OK In all circumstances, as the referenced object cannot
 *              necessarily be checked for validity on the invoking thread.
 *              However, no event will be dispatched if the object is
 *              invalid or not an EventDispatcher.
 *          FRE_INVALID_ARGUMENT If code or level is NULL
 */

FREResult FREDispatchStatusEventAsync(
        FREContext     ctx  ,
        const uint8_t* code ,
        const uint8_t* level
);

#ifdef __cplusplus
}
#endif

#endif /* #ifndef _FLASH_RUNTIME_EXTENSIONS_H_ */

ajwfrost commented 2 years ago

It's not just the header though, you'd need some way to marshall the calls from the AIR runtime (C++) to the Golang library. I don't even know if Golang supports dynamic libraries .. can you create .dll and .so files using that? But if so, there would either need to be some shim layer created in C in order to do the necessary translations, or we'd need to incorporate this directly into the runtime (like currently there are implementations of the interfaces for C and for Java).

Interesting concept though! - so if you do have any info on how we could get our C++ code to call into an initializer in Go and get function pointers so that it can call the other extension functions - and to have a set of function pointers where the extension can call back the FRExxx functions - then it would be very useful :-)

thanks

al-sabr commented 2 years ago

I have found this project:

https://github.com/z505/goDLL

This is how easy it is in Golang to build a dynamic library

https://developpaper.com/operation-of-compiling-golang-into-dll-file/

SWIG

http://www.swig.org/Doc2.0/Go.html

Other resources

https://pkg.go.dev/cmd/cgo
http://cheesesun.blogspot.com/2010/04/callbacks-in-cgo.html
https://stackoverflow.com/questions/65304131/is-it-possible-to-load-a-go-dll-in-c-dll-on-windows
https://groups.google.com/g/golang-nuts/c/TehYYd5u8gQ#f7d610e08b86d437
https://medium.com/learning-the-go-programming-language/calling-go-functions-from-other-languages-4c7d8bcc69bf

Simplest example of how the code for a DLL in Golang looks like

https://github.com/vladimirvivien/go-cshared-examples/blob/master/awesome.go

al-sabr commented 2 years ago

There's also Rust which is awesome

http://bitboom.github.io/calling-rust-from-cpp
http://hotforknowledge.com/2019/07/14/6-rust-the-new-c/

https://docs.rust-embedded.org/book/interoperability/rust-with-c.html
https://amirkoblog.wordpress.com/2018/07/05/calling-rust-code-from-c-c/
https://users.rust-lang.org/t/how-to-use-dll-libs-created-by-rust/19279/7
https://www.reddit.com/r/rust/comments/6bvd8c/calling_rust_from_c/

al-sabr commented 2 years ago

I don't even know if Golang supports dynamic libraries .. can you create .dll and .so files using that? But if so, there would either need to be some shim layer created in C in order to do the necessary translations, or we'd need to incorporate this directly into the runtime

Yes it is the easiest method from all other languages out there. You can create static and dynamic link libraries on all the platforms from one single command line.

airsdk / Adobe-Runtime-Support

Convert FlashRuntimeExtensions.h from C++ to Golang/Rust for ANE development within Golang/Rust #1454

Description

SWIG