string_r_R

String_r_R.cyan

package metaobjectTest


@doc{*
    This is a literal string annotation, an identifier precedes a literal
    string. The string should be a regular expression as expected by 
    prototype cyan.lang.RegExpr. The same regular expression language 
    is used by java.util.regex.Pattern. The annotation
        r"regexpr"   or R"regexpr"
    is replaced by
        RegExpr("regexpr")
*}
object String_r_R

    func run {
        var ok = "aabc" ~= r"a*b*c";
        assert ok;
        
        ok = "aabc" ~= r"a+b*c+";
        assert ok;
        
        ok = "0bc" ~= R"[0-9]b*cc*";
        assert ok;
        
        ok = "012aaabbc" ~= R"[0-2]*a+D?b*c";
        assert ok;
        
    }

end