// Syntax: void method() no exceptions { doSomething(); }

// (rethrows all inner exceptions as runtime exceptions)

//

// Alternative syntax: void method() ctex { doSomething(); }

// (ctex for catches thrown exceptions or something like that)

!592 1000265 // auto-importer, standard function adder 

public class main {

  public static void main(String[] args) throws Exception {

    String s = loadMainJava();

    Pattern regex = Pattern.compile("\\s+(no\\s+exceptions|ctex|null on exception)\\s*\\{");

    for (int i = 0; i < 100; i++) {

      Matcher matcher = regex.matcher(s);

      if (!matcher.find())

        break;

      String kind = matcher.group(1);

      System.out.println("Iteration " + (i+1));

      int start = matcher.start(), end = matcher.end();

      int endOfBlock = findEndOfBlock(s, end);

      String catchBlock, catchWhat;

      if (kind.startsWith("null")) {

        catchBlock = "return null;";

        catchWhat = "Throwable";

      } else {

        catchBlock = "throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e);";

        catchWhat = "Throwable";

      }

      String tryBlock = " { try {\n " +

        s.substring(end, endOfBlock) + "\n} catch (" + catchWhat + " __e) { " + catchBlock + " }";

      s = s.substring(0, start) + tryBlock + s.substring(endOfBlock);

    }

    saveMainJava(s);

  }

  // start is the index AFTER the opening bracket

  // returns index OF closing bracket

  static int findEndOfBlock(String s, int start) {

    int level = 1;

    for (int i = start; i < s.length(); i++) {

      if (s.charAt(i) == '{') ++level;

      else if (s.charAt(i) == '}') --level;

      if (level == 0)

        return i;

    }

    return s.length();

  }

}