Which looping construct is more popular? (an example of source code mining)

[Hridesh Rajan]

# Which looping construct is more popular?

p: Project = input;

do_count: output sum of int;

for_count: output sum of int;

while_count: output sum of int;

analyze_while := function(ws: Statement) {

    

    switch(ws.condition.kind) {

        case ExpressionKind.ANNOTATION: break;

        default:

            break;

    }

    

}; 

visit(p, visitor {

# only look at the latest snapshot

before n: CodeRepository -> {

snapshot := getsnapshot(n);

foreach (i: int; def(snapshot[i]))

visit(snapshot[i]);

stop;

}

before node: Statement -> {

   switch (node.kind) {

      case StatementKind.ASSERT: break;

      case StatementKind.BLOCK:  break;

      case StatementKind.BREAK:  break;

      case StatementKind.CASE:   break;

      case StatementKind.CATCH:  break;

      case StatementKind.CONTINUE: break;

      case StatementKind.DO: do_count << 1; break;

      case StatementKind.EMPTY:  break;

      case StatementKind.EXPRESSION: break;

      case StatementKind.FOR: for_count << 1; break;

      case StatementKind.IF:  break;

      case StatementKind.LABEL:  break;

      case StatementKind.OTHER:  break;

      case StatementKind.RETURN: break;

      case StatementKind.SWITCH: break;

      case StatementKind.SYNCHRONIZED: break;

      case StatementKind.THROW: break;

      case StatementKind.TRY:   break;

      case StatementKind.TYPEDECL: break;

      case StatementKind.WHILE: while_count <<1; analyze_while(node); break;

      default:

    break;

   }

}

});