package jp.ac.kobe_u.cs.prolog.builtin;
import jp.ac.kobe_u.cs.prolog.lang.ListTerm;
import jp.ac.kobe_u.cs.prolog.lang.Predicate;
import jp.ac.kobe_u.cs.prolog.lang.Prolog;
import jp.ac.kobe_u.cs.prolog.lang.Term;
import jp.ac.kobe_u.cs.prolog.lang.VariableTerm;
/*
This file is generated by Prolog Cafe.
PLEASE DO NOT EDIT!
*/
/**
<code>'$builtin_member'/2</code> defined in builtins.pl<br>
@author Mutsunori Banbara (banbara@kobe-u.ac.jp)
@author Naoyuki Tamura (tamura@kobe-u.ac.jp)
@version 1.0
*/
class PRED_$builtin_member_2 extends Predicate {
static Predicate _$builtin_member_2_top = new PRED_$builtin_member_2_top();
static Predicate _$builtin_member_2_sub_1 = new PRED_$builtin_member_2_sub_1();
static Predicate _$builtin_member_2_1 = new PRED_$builtin_member_2_1();
static Predicate _$builtin_member_2_2 = new PRED_$builtin_member_2_2();
public Term arg1, arg2;
public PRED_$builtin_member_2(Term a1, Term a2, Predicate cont) {
arg1 = a1;
arg2 = a2;
this.cont = cont;
}
public PRED_$builtin_member_2(){}
public void setArgument(Term[] args, Predicate cont) {
arg1 = args[0];
arg2 = args[1];
this.cont = cont;
}
public int arity() { return 2; }
public String toString() {
return "$builtin_member(" + arg1 + "," + arg2 + ")";
}
public Predicate exec(Prolog engine) {
engine.aregs[1] = arg1;
engine.aregs[2] = arg2;
engine.cont = cont;
return _$builtin_member_2_top;
}
}
class PRED_$builtin_member_2_top extends PRED_$builtin_member_2 {
public Predicate exec(Prolog engine) {
engine.setB0();
return engine.jtry(_$builtin_member_2_1, _$builtin_member_2_sub_1);
}
}
class PRED_$builtin_member_2_sub_1 extends PRED_$builtin_member_2 {
public Predicate exec(Prolog engine) {
return engine.trust(_$builtin_member_2_2);
}
}
class PRED_$builtin_member_2_1 extends PRED_$builtin_member_2 {
public Predicate exec(Prolog engine) {
// '$builtin_member'(A,[A|B]):-true
Term a1, a2;
Predicate cont;
a1 = engine.aregs[1];
a2 = engine.aregs[2];
cont = engine.cont;
// '$builtin_member'(A,[A|B]):-[]
a2 = a2.dereference();
if (a2.isList()){
Term[] args = {((ListTerm)a2).car(), ((ListTerm)a2).cdr()};
if (! a1.unify(args[0], engine.trail))
return engine.fail();
} else if (a2.isVariable()){
((VariableTerm) a2).bind(new ListTerm(a1, new VariableTerm(engine)), engine.trail);
} else {
return engine.fail();
}
return cont;
}
}
class PRED_$builtin_member_2_2 extends PRED_$builtin_member_2 {
public Predicate exec(Prolog engine) {
// '$builtin_member'(A,[B|C]):-'$builtin_member'(A,C)
Term a1, a2, a3;
Predicate cont;
a1 = engine.aregs[1];
a2 = engine.aregs[2];
cont = engine.cont;
// '$builtin_member'(A,[B|C]):-['$builtin_member'(A,C)]
a2 = a2.dereference();
if (a2.isList()){
Term[] args = {((ListTerm)a2).car(), ((ListTerm)a2).cdr()};
a3 = args[1];
} else if (a2.isVariable()){
a3 = new VariableTerm(engine);
((VariableTerm) a2).bind(new ListTerm(new VariableTerm(engine), a3), engine.trail);
} else {
return engine.fail();
}
engine.aregs[1] = a1;
engine.aregs[2] = a3;
engine.cont = cont;
return _$builtin_member_2_top;
}
}