gistfile1.d

YesNoSometimes assmtfdbkParse(string text) {
	string[] stes = text.split(",");
	foreach(ste; stes) {
		switch(ste) {
			case "Yes definately":
				return YesNoSometimes.Yes;
			case "Depends on the student":
				return YesNoSometimes.Sometimes;
			default:
				return YesNoSometimes.No;
		}
	}
	
	return YesNoSometimes.No;
}

gistfile2.d

mixin template QParse(string name, string defaultv, RET, ARGS...) if ((EnumMembers!RET).length-1 == ARGS.length) {
	mixin("""RET " ~ name ~ "(string text) {
	string[] stes = text.split(\",\");
	foreach(ste; stes) {
		switch(ste) {
" ~ QParseGrabCases!(RET, ARGS) ~ "
			default:
				return RET." ~ defaultv ~ ";
		}
	}
	return RET." ~ defaultv ~ ";
}""");
}

mixin template QParseOther(string name, RET, ARGS...) if ((EnumMembers!RET).length-1 == ARGS.length) {
	mixin("""RET " ~ name ~ "(string text, ref string other) {
	string[] stes = text.split(\",\");
	foreach(ste; stes) {
		switch(ste) {
" ~ QParseGrabCases!(RET, ARGS) ~ "
			case \"Other\":
				continue;
			default:
				other = ste;
				return RET.Other;
		}
	}
	return RET.Other;
}""");
}

pure string QParseGrabCases(RET, ARGS...)() {
	string ret;
	enum members = EnumMembers!RET;
	foreach(i, arg; ARGS) {
		ret ~= "			case \"" ~ arg ~ "\":\n";
		ret ~= "				return " ~ members[i].stringof ~ ";\n";
	}
	return ret;
}

mixin template QParseOtherBitwise(string name, RET, ARGS...) if ((EnumMembers!RET).length-2 == ARGS.length) {
	mixin("""size_t " ~ name ~ "(string text, ref string other) {
    size_t ret;
	string[] stes = text.split(\",\");
	foreach(ste; stes) {
		switch(ste) {
" ~ QParseGrabCasesBitwise!(RET, ARGS) ~ "
			case \"Other\":
				continue;
			default:
				other = ste;
				ret |= RET.Other;
                break;
		}
	}
	return ret;
}""");
}

pure string QParseGrabCasesBitwise(RET, ARGS...)() {
	string ret;
	enum members = (EnumMembers!RET)[1 .. $];
	foreach(i, arg; ARGS) {
		ret ~= "			case \"" ~ arg ~ "\":\n";
		ret ~= "				ret |= " ~ members[i].stringof ~ ";\n";
		ret ~= "                break;\n";
	}
	return ret;
}