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Mixins for haxe

Haxe 99.82% Batchfile 0.18%

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mixin's Issues

Haxe for VSCode crashes when using mixins

I have some very basic usage of the library, which compiles and runs successfully, but for some reason fails when trying to get completions from the VSCode extension.

mixins/MovingObject.hx

package mixins;

@mixin interface MovingObject {
    public var speed: Int;
}

objects/Car.hx

package objects;
import mixins.MovingObject;

class Car implements MovingObject {
    public function isFast(): Boolean {
         return // Here I press Ctrl + Space to get completions
    }
}

And the following error message appears in the debug window of the extension:

Code: -32603 
/home/bary/haxelib/mixin/0,9,5/lib/mixin/Mixin.hx:229: characters 26-47 : Invalid field access : baseImplements
?:1: characters 1048575-8796094070782 : Called from
Aborted

If I add @baseImplements() to the mixin, I get a different error

 Code: -32603 
/home/bary/haxelib/mixin/0,9,5/lib/mixin/Mixin.hx:89: characters 3-8 : Mixin with mixins.MovingObject already existed...
/home/bary/haxelib/mixin/0,9,5/lib/mixin/Mixin.hx:48: characters 19-32 : Called from
?:1: characters 1-7 : Called from
Aborted
[]

@:baseExtends(Class) @:baseImplements(Interface)

mixin level metadata
add a bunch of @:base methods
or something like that

@:base @:mixin should check superClasses on include

@:mixin fields can overlap existing fields
@:base can be a part of superClass

static methods and var

support for static method can be supported adding for example with annotations. marking an instance method of an interface as static

interface A {
@:static function sum(a,b) {}
}

makeSureFieldIsExplicitlyTyped should be called only on mixin fields

dont even touch class fields :)

make it possible to call $base methods from anywhere

One mixin to extend another?

Should work more like concating two mixins: fields should be merged, raise exception on name conflicts.

Cannot return `null` from Void-function

I want to use Mixins to add (empty) function stubs in case they aren't defined in the base class and to call the base class's implementation if the function is defined there. However this doesn't seem possible, as it will throw this compilation error Cannot return `null` from Void-function. Is there any way around this?

@mixin interface SomeMixin {
    @overwrite(addIfAbsent=true) function update():Void {
        $base.update();
    }
}

PS: I really like the library so far, very useful!

class Test {
    static function main() {
        var t = new Test();
        t.val++;
        trace(t.val);
    }
    
    @:isVar
    var val(get,set):Int;
    
    function get_val():Int {    
        function injected() return val;
        
        return injected();
	}
    
    function set_val(v:Int):Int {
        return val = v;
    }
    
    function new()
	{
        val = 0;
	}
}