checks the invariants of the object . concode_field_sep IAST<E> result concode_elem_sep int line concode_elem_sep int column concode_elem_sep int position concode_elem_sep boolean lastCR concode_field_sep int getPosition concode_elem_sep boolean getLastCR concode_elem_sep IAST<E> getResult concode_elem_sep int getLine concode_elem_sep int getColumn
boolean function ( ) { assert position >= 0 ; assert line >= 0 ; return true ; }