[Template] Mixins and foreach

[Nicholas Wilson]

struct MyType
{
     void* raw;
     static struct Info
     {
         @(42) int foo;
     }
     mixin generateGetInfo!MyTypeGetInfo;
}

extern(C) void MyTypeGetInfo(void*,int,size_t,void*size_t*);
mixin template generateGetInfo(alias func)
{
     foreach(field; typeof(this).Info.tupleof)
     {
         mixin("@property " ~ typeof(field).stringof ~ " " ~ 
field.stringof ~ "()" ~
                " { " ~
                "    typeof(return) ret;" ~
                func.stringof ~ "(this.tupleof," ~ 
__traits(getAttributes, field)[0] ~ ",ret.sizeof,&ret,null);" ~
               "return ret; }");
     }
}

Fails with
Error: declaration expected, not 'foreach'
Error: no identifier for declarator typeof(this).Info.tupleof
Error: declaration expected, not ')'

I also tried a double mixin, one for the foreach and one for the 
mixin to no avail. How do I do a foreach in a [template] mixin to 
procedurally inject multiple declarations ? Static foreach is not 
an option as I am using LDC.