def p_while_statement(self, p):
        'while_statement : WHILE LPAREN cond RPAREN whilecontent_statement'
        p[0] = WhileStatement(p[3], p[5], lineno=p.lineno(1))
        p.set_lineno(0, p.lineno(1))
def p_while_statement ( self , p ) : p [ 0 ] = WhileStatement ( p [ 3 ] , p [ 5 ] , lineno = p . lineno ( 1 ) ) p . set_lineno ( 0 , p . lineno ( 1 ) )
while_statement : WHILE LPAREN cond RPAREN whilecontent_statement