19. The method as recited in claim 14 , wherein directly executing the nonlinear program element comprises: inserting the executed body of the loop construct at the head of the input token stream; and directly executing the body of the loop construct until the loop execution ends.
19. The method as recited in claim 14 , wherein directly executing the nonlinear program element comprises: inserting the executed body of the loop construct at the head of the input token stream; and directly executing the body of the loop construct until the loop execution ends. 20. The method as recited in claim 19 , further comprising forming an iterator comprising tokens representing the body of the loop construct and adding the iterator to a token stack.