gnu.prolog.vm
Class ExecuteOnlyCode
java.lang.Object
extended by gnu.prolog.vm.ExecuteOnlyCode
- All Implemented Interfaces:
- Installable, PrologCode
- Direct Known Subclasses:
- DateTimePrologCode, Predicate_abolish, Predicate_append, Predicate_arg, Predicate_assert, Predicate_at_end_of_stream, Predicate_atom, Predicate_atom_chars, Predicate_atom_codes, Predicate_atom_concat, Predicate_atom_length, Predicate_atomic, Predicate_bagof, Predicate_call, Predicate_char_code, Predicate_char_conversion, Predicate_clause, Predicate_close, Predicate_compare, Predicate_compound, Predicate_copy_term, Predicate_current_char_conversion, Predicate_current_functor, Predicate_current_input, Predicate_current_op, Predicate_current_output, Predicate_current_predicate, Predicate_current_prolog_flag, Predicate_debugging, Predicate_dialog, Predicate_ensure_loaded, Predicate_equal, Predicate_findall, Predicate_float, Predicate_flush_output, Predicate_functor, Predicate_get_byte, Predicate_get_char, Predicate_get_time, Predicate_greater_than, Predicate_greater_than_or_equal, Predicate_halt, Predicate_integer, Predicate_is, Predicate_is_list, Predicate_java_classname, Predicate_java_object, Predicate_java_to_string, Predicate_length, Predicate_less_than, Predicate_less_than_or_equal, Predicate_listing, Predicate_member, Predicate_msort, Predicate_nonvar, Predicate_nospy, Predicate_nospyall, Predicate_not_equal, Predicate_not_unifiable, Predicate_notrace, Predicate_number, Predicate_number_chars, Predicate_number_codes, Predicate_op, Predicate_open, Predicate_peek_byte, Predicate_peek_char, Predicate_predsort, Predicate_put_byte, Predicate_put_char, Predicate_read_term, Predicate_retract, Predicate_set_input, Predicate_set_output, Predicate_set_prolog_flag, Predicate_set_stream_position, Predicate_sort, Predicate_spy, Predicate_stacktrace, Predicate_stream_property, Predicate_sub_atom, Predicate_term_greater_then, Predicate_term_greater_then_or_equal, Predicate_term_identical, Predicate_term_less_then, Predicate_term_less_then_or_equal, Predicate_term_not_identical, Predicate_trace, Predicate_tracing, Predicate_unify, Predicate_unify_with_occurs_check, Predicate_univ, Predicate_uuid, Predicate_var, Predicate_write_term, UndefinedPredicateCode
public abstract class ExecuteOnlyCode
- extends Object
- implements PrologCode
For Predicates which do not need to be installed or uninstalled. So that they
don't all need to have empty methods.
- Author:
- Daniel Thomas
|
Method Summary |
abstract int |
execute(Interpreter interpreter,
boolean backtrackMode,
Term[] args)
this method is used for execution of code |
void |
install(Environment env)
Just an empty method as we don't need to do anything here. |
void |
uninstall(Environment env)
Just an empty method as we don't need to do anything here. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ExecuteOnlyCode
public ExecuteOnlyCode()
execute
public abstract int execute(Interpreter interpreter,
boolean backtrackMode,
Term[] args)
throws PrologException
- Description copied from interface:
PrologCode
- this method is used for execution of code
- Specified by:
execute in interface PrologCode
- Parameters:
interpreter - interpreter in which context code is executedbacktrackMode - true if predicate is called on backtracking and false otherwiseargs - arguments of code
- Returns:
- either SUCCESS, SUCCESS_LAST, or FAIL.
- Throws:
PrologException
install
public void install(Environment env)
- Just an empty method as we don't need to do anything here.
- Specified by:
install in interface Installable
- Parameters:
env - Environment to install the predicate- See Also:
Installable.install(gnu.prolog.vm.Environment)
uninstall
public void uninstall(Environment env)
- Just an empty method as we don't need to do anything here.
- Specified by:
uninstall in interface Installable
- Parameters:
env - Environment to install the predicate- See Also:
Installable.uninstall(gnu.prolog.vm.Environment)