c :: import "@ffi/c"

Allocator :: struct {
	context ?*mut anyopaque
	alloc @func(context ?*mut anyopaque, size usize, alignment usize) ?*mut u8
	free @func(context ?*mut anyopaque, memory ?*mut u8, size usize, alignment usize) void
}

heap Allocator :: Allocator {
	context = none,
	alloc = func(_ ?*mut anyopaque, size usize, _ usize) ?*mut u8 {
		return ptr_cast(u8, c.malloc(size))
	},
	free = func(_ ?*mut anyopaque, memory ?*mut u8, _ usize, _ usize) void {
		c.free(memory)
	},
}

alloc func(allocator Allocator, size usize, alignment usize) ?*mut u8 {
	return allocator.alloc(allocator.context, size, alignment)
}

free func(allocator Allocator, memory ?*mut u8, size usize, alignment usize) void {
	allocator.free(allocator.context, memory, size, alignment)
}