How to get access to Voldemort / private thingies

[cy via Digitalmars-d-learn]

On Friday, 17 June 2016 at 19:49:18 UTC, Johan Engelen wrote:
> Hi all,
>   Is there another way to get access to Voldemort class 
> methods, or private class members, other than using 
> "pragma(mangle, ...)" on user symbols?

Well, I'm sure you know that's a horrible idea. Anyway, a trick I 
use in C++ is to copy and paste the class's source into my own 
file, and change everything to public, then just cast to my 
hiijacking class type.

So, in D...

import std.stdio;

final class SeriousBusiness {
private:
	int soconfidential;
	char wow;
	void thisIsTotallyProtectedHonest() {
		// import underlying.implementation;
		// import dependency.hell
		// import kitchen.sink
		writeln("We can totally put sensitive data in here");
	}
	this(int s, char w) {
		this.soconfidential = s;
		this.wow = w;
	}
}

final class ProtectionAttributesSuck {
   int soconfidential;
   char wow;
   void thisIsTotallyProtectedHonest() {
	  // import underlying.implementation;
	  // import dependency.hell
	  // import kitchen.sink
	  writeln("We can totally put sensitive data in here");
	  writeln("see ",wow," for any equipment you need.");
	}
}

void main() {
	SeriousBusiness srs = new SeriousBusiness(42,'Q');
	ProtectionAttributesSuck* hack = 
cast(ProtectionAttributesSuck*)&srs;
	writeln("the answer is ",hack.soconfidential);
	hack.thisIsTotallyProtectedHonest();
}