DMD 1.022 and 2.005 releases

[Robert Fraser]

nazo Wrote:

> Walter Bright wrote:
> > Bug fixes. New (and very modest) C++ interface. Library module overhauls 
> > by Andrei Alexandrescu. Brad Roberts is working behind the curtain to 
> > get phobos development much better organized.
> > 
> > http://www.digitalmars.com/d/1.0/changelog.html
> > http://ftp.digitalmars.com/dmd.1.022.zip
> > 
> > http://www.digitalmars.com/d/changelog.html
> > http://ftp.digitalmars.com/dmd.2.005.zip
> 
> great!
> 
> I wrote "C++ constructor/destructor" template for g++ and it works fine!
> 
> #include <iostream>
> using namespace std;
> class D{
>   public:
>     D();
>     ~D();
>     virtual int bar(int i, int j, int k);
> };
> 
> D::D(){
>   printf("start\n");
> }
> 
> D::~D(){
>   printf("end\n");
> }
> 
> int D::bar(int i, int j, int k){
>       cout << "i = " << i << endl;
>       cout << "j = " << j << endl;
>       cout << "k = " << k << endl;
>       return 8;
> };
> 
> import std.metastrings;
> extern (C++){
>   interface D{
>     int bar(int i, int j, int k);
>   }
> }
> 
> extern(C){
>   void* _Znwj(uint);
>   void _ZdlPv(void*);
> }
> 
> template cpp_decl(T){
>   const cpp_decl = "extern(C) extern char* _ZTV"~ToString!(T.stringof.length)~T.stringof~";";
> }
> 
> template cpp_constructor(T, ARGS...){
>   const cpp_constructor = "extern(C) void _ZN"~ToString!(T.stringof.length)~T.stringof~"C1Ev(void*);";//fixme: mangle and type
> }
> 
> template cpp_destructor(T){
>   const cpp_destructor = "extern(C) void _ZN"~ToString!(T.stringof.length)~T.stringof~"D1Ev(void*);";
> }
> 
> T cpp_new(T, ARGS...)(ARGS args){
>   const fn="_ZN"~ToString!(T.stringof.length)~T.stringof~"C1Ev";//fixme: mangle
>   void* rv;
>   rv = _Znwj(T.sizeof);
>   static if(is(typeof(mixin(fn)))){
>     mixin("alias "~fn~" init;");
>     init(rv, args);
>   }else static if(ARGS.length==0){
>     *cast(void**)rv = mixin("&_ZTV"~ToString!(T.stringof.length)~T.stringof)+2;
>   }else static assert(0);
>   return cast(D)rv;
> }
> 
> void cpp_delete(T)(T obj){
>   const fn="_ZN"~ToString!(T.stringof.length)~T.stringof~"D1Ev";
>   static if(is(typeof(mixin(fn)))){
>     mixin("alias "~fn~" term;");
>     term(cast(void*)obj);
>   }
>   _ZdlPv(cast(void*)obj);
> }
> 
> mixin(cpp_decl!(D));
> mixin(cpp_constructor!(D));//if D has constructor
> mixin(cpp_destructor!(D));//if D has destructor
> 
> void main(){
>   D d = cpp_new!(D);
>   d.bar(9,10,11);
>   cpp_delete(d);
> }
> 

Awesome. Just... awesome.