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Deno Foreign Function Interface (WIP & Need Help)

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Deno Foreign Function Interface.

Example

import * as ffi from "https://deno.land/x/ffi/mod.ts";

type Fn0 = ffi.CFunction<"int add(int, int)">; // { "add": { parameters: ["i32", "i32"]; result: "i32" } }
type Fn1 = ffi.CFunction<"long add(long)">; // { "abs": { parameters: ["i64"]; result: "i64" } }
type Fn2 = ffi.CFunction<"void hello(int)">; // { "hello": { parameters: ["i32"]; result: "void" } }
type Fn3 = ffi.CFunction<"void hello()">; // { "hello": { parameters: []; result: "void" } }
type Fn4 = ffi.CFunction<"void hello(void)">; // { "hello": { parameters: ["void"]; result: "void" } }

License

denoffi is released under the MIT License. See the bundled LICENSE file for details.

denoffi's People

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denoffi's Issues

Question about structs and by value calls

Thank you for maintaining this project.
After browsing the internet I found out that im lacking some use-cases when it comes to deno FFI.

First one is that I do not exactly know to to define an C-Struct Datatype on the deno end. Just given the example
struct color { unsigned char r; unsigned char r; unsigned char b; unsigned char a; }

I thought I should by using 'type' in Typescript. But this seems not to be valid syntax in Deno. Could you please provide me an example?

If this struct would get providden as pointer or reference, I would know what to do. But I get it as 'by value'. Just replacing it with an u8Array was not working for me. Probably I did it wrong.

So the second question is how to use this kind of data as argument.
void setColor(Color c);
Again, using u8Array was not successfull and an 'buffer' seems not to match the signature.
Could you please provide an short sample how to make a function call 'by value' in this case?

Thank you very much

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