Wrong function pointer definition

[Arcnor]

The following C++ definition:

const char* (*GetClipboardTextFn)();

...creates the following Java definition:

public static class @Cast("const char *") GetClipboardTextFn extends FunctionPointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public @Cast("const char *") GetClipboardTextFn(Pointer p) { super(p); }
    protected @Cast("const char *") GetClipboardTextFn() { allocate(); }
    private native void allocate();
    public native @Cast("const char*") BytePointer call();
}

Both the @Cast on the class and the ones on the constructors make this impossible to compile.

I've fixed this in my InfoMap in the meantime by doing infoMap.put(new Info("char* (*)()").pointerTypes("GetClipboardTextFn")), which might also be a bug? (There is no way of referencing this that I can see other than char* (*)(), but that can obviously match with multiple functions)

[saudet]

How did you generate that? When I try this typedef:

typedef const char* (*GetClipboardTextFn)();

The output is as follows and compiles fine:

public static class GetClipboardTextFn extends FunctionPointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public    GetClipboardTextFn(Pointer p) { super(p); }
    protected GetClipboardTextFn() { allocate(); }
    private native void allocate();
    public native @Cast("const char*") BytePointer call();
}

[Arcnor]

I've checked the code, and typedef has special code, so you won't get the @Cast.

This comes from here: https://github.com/ocornut/imgui/blob/master/imgui.h#L761

I've also discovered my workaround is not perfect. The getter/setter for the function pointer will not be created...

[saudet]

Still doesn't happen here. I get this:

public static class GetClipboardTextFn_Pointer extends FunctionPointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public    GetClipboardTextFn_Pointer(Pointer p) { super(p); }
    protected GetClipboardTextFn_Pointer() { allocate(); }
    private native void allocate();
    public native @Cast("const char*") BytePointer call(Pointer user_data);
}
@MemberGetter public native GetClipboardTextFn_Pointer GetClipboardTextFn();

[Arcnor]

Ok, my original report seems wrong. What I'm really getting in Java is:

    public static class @Cast("const char*") BytePointer_GetClipboardTextFn extends FunctionPointer {
        static { Loader.load(); }
        /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
        public    @Cast("const char*") BytePointer_GetClipboardTextFn(Pointer p) { super(p); }
        protected @Cast("const char*") BytePointer_GetClipboardTextFn() { allocate(); }
        private native void allocate();
        public native @Cast("const char*") BytePointer call();
    }
    @MemberGetter public native @Cast("const char*") BytePointer_GetClipboardTextFn GetClipboardTextFn();

... so BytePointer_ is being appended. Since you're not getting it, I can upload the project I'm using for the generation (the mappings for imgui), it will probably be easier to see it there.

[Arcnor]

https://expirebox.com/download/efce5caa04c94eb8c9c481b7a1016a56.html contains the bindings, hopefully you should be able to just do "mvn clean package" and the error will show.

[saudet]

Ah, wait a minute, I had tried the one with the void* argument. Ok, without the void* argument, then it outputs weird, I see.

[saudet]

I've fixed this in the commit above. Thanks for reporting!

[saudet]

And now part of JavaCPP as of version 1.3.2. Thanks again for the feedback!