Error: Declaration is not yet implemented in CTFE

[bitwise via Digitalmars-d]

On Friday, 28 November 2014 at 19:24:33 UTC, Daniel Kozak via 
Digitalmars-d wrote:
> Dne Fri, 28 Nov 2014 20:01:41 +0100 bitwise via Digitalmars-d 
> <digitalmars-d at puremagic.com> napsal(a):
>
>> The docs for template mixins do show mixins inside functions, 
>> so is this a bug, or is there something else I'm doing wrong?
>>
>> //**************************
>> module main;
>> import std.traits;
>>
>> class ModInfo {
>>
>> }
>>
>> mixin template moduleInfo(alias MODULE) {
>> 	static const(ModInfo) __module_info = new ModInfo;
>> }
>>
>> const(ModInfo) getModuleInfo(alias mod)() {
>> 	static if(__traits(hasMember, mod, "__module_info")) {
>> 		return __traits(getMember, mod, "__module_info");
>> 	} else {
>> 		mixin moduleInfo!mod;      // ERROR [1]
>> 		return __module_info;
>> 	}
>> }
>>
>> void main() {
>> 	static const(ModInfo) info = getModuleInfo!(main);
>> }
>> //**************************
>>
>> [1] main.d(17,3): Error: Declaration mixin moduleInfo!(main);
>>  is not yet implemented in CTFE
>> main.d(23,31):        called from here: getModuleInfo()
>
>
> module main;
>
> immutable class ModInfo {
> 	
> }
>
> static moduleInfo(alias MODULE)() {
> 	return new ModInfo();
> }
>
> static getModuleInfo(alias mod)() {
> 	static if(__traits(hasMember, mod, "__module_info")) {
> 		return __traits(getMember, mod, "__module_info");
> 	} else {
> 		return moduleInfo!mod;
> 	}
> }
>
> void main() {
> 	immutable info = getModuleInfo!(main);
> }

Thanks, but this still doesn't fix my problem. The idea is that 
getModuleInfo should return the same static copy of ModInfo at 
each call to avoid duplication. ModInfo is a recursive reflection 
of an entire module, so it could be huge.

My goal is that someone could create a global (ModInfo 
__module_info) object inside their own module through a mixin 
template, which would allow reflection of private members in that 
module. If getModuleInfo() was called for a module that was 
missing __ module_info, a static copy would be created inside 
getModuleInfo(). This would be the case if someone wanted to 
reflect a static library that they themselves did not compile.