initialise the loop detector . concode_field_sep long loopStart concode_elem_sep boolean isLooping concode_elem_sep long loopEnd concode_field_sep void addStep concode_elem_sep long loopStart concode_elem_sep boolean isLooping concode_elem_sep void removePrecedingStates concode_elem_sep long loopEnd concode_elem_sep void backtrack
void function ( ) { isLooping = false ; loopStart = loopEnd = - 1 ; }