udalist.d

--- bar.d
enum hotload; @hotload:
void foo(){}
float bar(){return 3.14;}

enum hotloadstop; @hotloadstop:
void foobar(){}

--- foo.d
import std;
import bar;

template takeudalist(alias where, alias start,alias end){
	static foreach(I,A;getSymbolsByUDA!(where,start)){
		static if(is(A==end)){
			alias takeudalist=getSymbolsByUDA!(where,start)[0..I];
	}}
	//todo assert end exists or it was written
}
struct foobar{
	int i;
	int j()=>i;
	enum start;@start:
	float f;
	float g()=>f;
	bool b;
	enum end;@end:
	bool c()=>b;
	ubyte u;
}

enum modstart;@modstart:
int a;
bool b;
char c;
enum modend;@modend:
dchar d;

unittest{
	takeudalist!(bar,hotload,hotloadstop).stringof.writeln;
	takeudalist!(foobar,foobar.start,foobar.end).stringof.writeln;
	takeudalist!(mixin(__MODULE__),modstart,modend).stringof.writeln;
}