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.SymbolTerm;
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>'$sort'/4</code> defined in builtins.pl<br>
@author Mutsunori Banbara (banbara@kobe-u.ac.jp)
@author Naoyuki Tamura (tamura@kobe-u.ac.jp)
@version 1.0
*/
class PRED_$sort_4 extends Predicate {
static SymbolTerm s1 = SymbolTerm.makeSymbol("[]");
static Predicate _fail_0 = new PRED_fail_0();
static Predicate _$sort_4_var = new PRED_$sort_4_var();
static Predicate _$sort_4_var_1 = new PRED_$sort_4_var_1();
static Predicate _$sort_4_var_2 = new PRED_$sort_4_var_2();
static Predicate _$sort_4_lis = new PRED_$sort_4_lis();
static Predicate _$sort_4_lis_1 = new PRED_$sort_4_lis_1();
static Predicate _$sort_4_1 = new PRED_$sort_4_1();
static Predicate _$sort_4_2 = new PRED_$sort_4_2();
static Predicate _$sort_4_3 = new PRED_$sort_4_3();
public Term arg1, arg2, arg3, arg4;
public PRED_$sort_4(Term a1, Term a2, Term a3, Term a4, Predicate cont) {
arg1 = a1;
arg2 = a2;
arg3 = a3;
arg4 = a4;
this.cont = cont;
}
public PRED_$sort_4(){}
public void setArgument(Term[] args, Predicate cont) {
arg1 = args[0];
arg2 = args[1];
arg3 = args[2];
arg4 = args[3];
this.cont = cont;
}
public int arity() { return 4; }
public String toString() {
return "$sort(" + arg1 + "," + arg2 + "," + arg3 + "," + arg4 + ")";
}
public Predicate exec(Prolog engine) {
engine.aregs[1] = arg1;
engine.aregs[2] = arg2;
engine.aregs[3] = arg3;
engine.aregs[4] = arg4;
engine.cont = cont;
engine.setB0();
return engine.switch_on_term(_$sort_4_var, _fail_0, _fail_0, _$sort_4_1, _fail_0, _$sort_4_lis);
}
}
class PRED_$sort_4_var extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
return engine.jtry(_$sort_4_1, _$sort_4_var_1);
}
}
class PRED_$sort_4_var_1 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
return engine.retry(_$sort_4_2, _$sort_4_var_2);
}
}
class PRED_$sort_4_var_2 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
return engine.trust(_$sort_4_3);
}
}
class PRED_$sort_4_lis extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
return engine.jtry(_$sort_4_2, _$sort_4_lis_1);
}
}
class PRED_$sort_4_lis_1 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
return engine.trust(_$sort_4_3);
}
}
class PRED_$sort_4_1 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
// '$sort'([],[],A,B):-true
Term a1, a2, a3, a4;
Predicate cont;
a1 = engine.aregs[1];
a2 = engine.aregs[2];
a3 = engine.aregs[3];
a4 = engine.aregs[4];
cont = engine.cont;
// '$sort'([],[],A,B):-[]
a1 = a1.dereference();
if (a1.isSymbol()){
if (! a1.equals(s1))
return engine.fail();
} else if (a1.isVariable()){
((VariableTerm) a1).bind(s1, engine.trail);
} else {
return engine.fail();
}
a2 = a2.dereference();
if (a2.isSymbol()){
if (! a2.equals(s1))
return engine.fail();
} else if (a2.isVariable()){
((VariableTerm) a2).bind(s1, engine.trail);
} else {
return engine.fail();
}
return cont;
}
}
class PRED_$sort_4_2 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
// '$sort'([A],[A],B,C):-true
Term a1, a2, a3, a4, a5;
Predicate cont;
a1 = engine.aregs[1];
a2 = engine.aregs[2];
a3 = engine.aregs[3];
a4 = engine.aregs[4];
cont = engine.cont;
// '$sort'([A],[A],B,C):-[]
a1 = a1.dereference();
if (a1.isList()){
Term[] args = {((ListTerm)a1).car(), ((ListTerm)a1).cdr()};
a5 = args[0];
if (! s1.unify(args[1], engine.trail))
return engine.fail();
} else if (a1.isVariable()){
a5 = new VariableTerm(engine);
((VariableTerm) a1).bind(new ListTerm(a5, s1), engine.trail);
} else {
return engine.fail();
}
a2 = a2.dereference();
if (a2.isList()){
Term[] args = {((ListTerm)a2).car(), ((ListTerm)a2).cdr()};
if (! a5.unify(args[0], engine.trail))
return engine.fail();
if (! s1.unify(args[1], engine.trail))
return engine.fail();
} else if (a2.isVariable()){
((VariableTerm) a2).bind(new ListTerm(a5, s1), engine.trail);
} else {
return engine.fail();
}
return cont;
}
}
class PRED_$sort_4_3 extends PRED_$sort_4 {
public Predicate exec(Prolog engine) {
// '$sort'([A,B|C],D,E,F):-'$halve'(C,[B|C],G,H),'$sort'([A|G],I,E,F),'$sort'(H,J,E,F),'$merge'(I,J,D,E,F)
Term a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14;
Predicate p1, p2, p3;
Predicate cont;
a1 = engine.aregs[1];
a2 = engine.aregs[2];
a3 = engine.aregs[3];
a4 = engine.aregs[4];
cont = engine.cont;
// '$sort'([A,B|C],D,E,F):-['$halve'(C,[B|C],G,H),'$sort'([A|G],I,E,F),'$sort'(H,J,E,F),'$merge'(I,J,D,E,F)]
a1 = a1.dereference();
if (a1.isList()){
Term[] args = {((ListTerm)a1).car(), ((ListTerm)a1).cdr()};
a5 = args[0];
a6 = args[1];
} else if (a1.isVariable()){
a5 = new VariableTerm(engine);
a6 = new VariableTerm(engine);
((VariableTerm) a1).bind(new ListTerm(a5, a6), engine.trail);
} else {
return engine.fail();
}
a6 = a6.dereference();
if (a6.isList()){
Term[] args = {((ListTerm)a6).car(), ((ListTerm)a6).cdr()};
a7 = args[0];
a8 = args[1];
} else if (a6.isVariable()){
a7 = new VariableTerm(engine);
a8 = new VariableTerm(engine);
((VariableTerm) a6).bind(new ListTerm(a7, a8), engine.trail);
} else {
return engine.fail();
}
a9 = new ListTerm(a7, a8);
a10 = new VariableTerm(engine);
a11 = new VariableTerm(engine);
a12 = new ListTerm(a5, a10);
a13 = new VariableTerm(engine);
a14 = new VariableTerm(engine);
p1 = new PRED_$merge_5(a13, a14, a2, a3, a4, cont);
p2 = new PRED_$sort_4(a11, a14, a3, a4, p1);
p3 = new PRED_$sort_4(a12, a13, a3, a4, p2);
return new PRED_$halve_4(a8, a9, a10, a11, p3);
}
}