• Ruby The Roobster (4/4) Sep 29 2022 Is there any way one can interface with Rust, such as with a
• mw (5/9) Sep 29 2022 https://code.dlang.org/packages/rust_interop_d
• Ruby The Roobster (2/12) Sep 29 2022 This isn't the issue. I can't interface anything, period.
• Imperatorn (4/20) Sep 29 2022 Show an example of exactly what you're trying to do. Maybe it's
• Ruby The Roobster (51/72) Sep 30 2022 lib.rs:
• mw (7/7) Sep 30 2022 extern(C++)？

Ruby The Roobster <rubytheroobster yandex.com> writes:

Is there any way one can interface with Rust, such as with a 
struct, or a function?

I know that rust has an extern keyword, but I can't get it to 
work.

mw <mingwu gmail.com> writes:

On Thursday, 29 September 2022 at 16:02:43 UTC, Ruby The Roobster 
wrote:
 Is there any way one can interface with Rust, such as with a 
 struct, or a function?

 I know that rust has an extern keyword, but I can't get it to 
 work.

https://code.dlang.org/packages/rust_interop_d


Read the notes on memory management:

Only pass pointers as u64 as value type.

Ruby The Roobster <rubytheroobster yandex.com> writes:

On Thursday, 29 September 2022 at 16:07:59 UTC, mw wrote:
 On Thursday, 29 September 2022 at 16:02:43 UTC, Ruby The 
 Roobster wrote:
 Is there any way one can interface with Rust, such as with a 
 struct, or a function?

 I know that rust has an extern keyword, but I can't get it to 
 work.

 https://code.dlang.org/packages/rust_interop_d


 Read the notes on memory management:

 Only pass pointers as u64 as value type.

This isn't the issue.  I can't interface anything, period.

Imperatorn <johan_forsberg_86 hotmail.com> writes:

On Friday, 30 September 2022 at 00:18:42 UTC, Ruby The Roobster 
wrote:
 On Thursday, 29 September 2022 at 16:07:59 UTC, mw wrote:
 On Thursday, 29 September 2022 at 16:02:43 UTC, Ruby The 
 Roobster wrote:
 Is there any way one can interface with Rust, such as with a 
 struct, or a function?

 I know that rust has an extern keyword, but I can't get it to 
 work.

 https://code.dlang.org/packages/rust_interop_d


 Read the notes on memory management:

 Only pass pointers as u64 as value type.

 This isn't the issue.  I can't interface anything, period.

Show an example of exactly what you're trying to do. Maybe it's 
some detail

Ruby The Roobster <rubytheroobster yandex.com> writes:

On Friday, 30 September 2022 at 06:25:33 UTC, Imperatorn wrote:
 On Friday, 30 September 2022 at 00:18:42 UTC, Ruby The Roobster 
 wrote:
 On Thursday, 29 September 2022 at 16:07:59 UTC, mw wrote:
 On Thursday, 29 September 2022 at 16:02:43 UTC, Ruby The 
 Roobster wrote:
 Is there any way one can interface with Rust, such as with a 
 struct, or a function?

 I know that rust has an extern keyword, but I can't get it 
 to work.

 https://code.dlang.org/packages/rust_interop_d


 Read the notes on memory management:

 Only pass pointers as u64 as value type.

 This isn't the issue.  I can't interface anything, period.

 Show an example of exactly what you're trying to do. Maybe it's 
 some detail

lib.rs:

```rs

     struct Rectangle {
         width: u32,
         height: u32,
     }

     impl Rectangle {
         extern "cdecl" fn area(&self) -> u32 {
             self.width * self.height
         }

         extern "cdecl" fn can_hold(&self, other: &Rectangle) -> 
bool {
             self.width > other.width && self.height > other.height
         }
     }
```

main.d:

```d
     struct Rectangle
     {
         uint width;
         uint hight;
         extern(C++) uint area();
         extern(C++) bool can_hold(Rectangle rhs)
     }

     void main()
     {
         auto rect1 = Rectangle(1,1);
         auto rect2 = Rectangle(0,0);
         assert(rect1.area == 1 && rect2.area == 0 && 
rect1.canHold(rect2));
     }
```

lib.rs was built as a "staticlib" using rustc, and the command I 
used was:

ldc2 -m64 main.d lib.lib

The output:

```
main.obj : error LNK2019: unresolved external symbol "public: 
unsigned int __cdecl Rectangle::area(void)" 
(?area Rectangle  QEAAIXZ) referenced in function _Dmain
main.obj : error LNK2019: unresolved external symbol "public: 
bool __cdecl Rectangle::can_hold(struct Rectangle)" 
(?can_hold Rectangle  QEAA_NU1  Z) referenced in function _Dmain
main.exe : fatal error LNK1120: 2 unresolved externals
Error: C:\Program Files (x86)\Microsoft Visual 
Studio\2022\BuildTools\VC\Tools\MSVC\14.33.31629\bin\HostX64\x64\link.exe
failed with status: 1120
```

Also, is it normal for the .lib file to be 11 megabytes?

mw <mingwu gmail.com> writes:

extern(C++)？

Why do you think Rust export C++ linkage?

And why do you think Rust export some kind of OO object model 
linkage?


Do it in plain C style, you may make it work.

As said, check how it's done in:

https://code.dlang.org/packages/rust_interop_d