Helfer SpecialType

Jan Burse, erstellt 15. Okt 2018
package jekpro.reference.structure;
import jekpro.model.inter.AbstractSpecial;
import jekpro.model.inter.Engine;
import jekpro.model.molec.BindCount;
import jekpro.tools.term.AbstractSkel;
import jekpro.tools.term.SkelAtom;
import jekpro.tools.term.SkelCompound;
import jekpro.tools.term.SkelVar;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* <p>Provides built-in predicates for type checking.</p>
* <p/>
* Warranty & Liability
* To the extent permitted by applicable law and unless explicitly
* otherwise agreed upon, XLOG Technologies GmbH makes no warranties
* regarding the provided information. XLOG Technologies GmbH assumes
* no liability that any problems might be solved with the information
* provided by XLOG Technologies GmbH.
* <p/>
* Rights & License
* All industrial property rights regarding the information - copyright
* and patent rights in particular - are the sole property of XLOG
* Technologies GmbH. If the company was not the originator of some
* excerpts, XLOG Technologies GmbH has at least obtained the right to
* reproduce, change and translate the information.
* <p/>
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
* <p/>
* Restrictions
* Only to be distributed with programs that add significant and primary
* functionality to the library. Not to be distributed with additional
* software intended to replace any components of the library.
* <p/>
* Trademarks
* Jekejeke is a registered trademark of XLOG Technologies GmbH.
*/
public final class SpecialType extends AbstractSpecial {
private final static int SPECIAL_INTEGER = 0;
private final static int SPECIAL_FLOAT = 1;
private final static int SPECIAL_ATOM = 2;
private final static int SPECIAL_COMPOUND = 3;
private final static int SPECIAL_REFERENCE = 4;
private final static int SPECIAL_DECIMAL = 5;
private final static int SPECIAL_NUMBER = 6;
private final static int SPECIAL_CALLABLE = 7;
private final static int SPECIAL_ATOMIC = 8;
private final static int SPECIAL_FLOAT32 = 9;
private final static int SPECIAL_FLOAT64 = 10;
/**
* <p>Create a tyoe special.</p>
*
* @param i The id.
*/
public SpecialType(int i) {
super(i);
}
/**
* <p>Logically evaluate a goal in a list of goals for the first time.</p>
* <p>The goal is passed via the skel and display of the engine.</p>
* <p>The continuation is passed via the r and u of the engine.</p>
* <p>The new continuation is returned via the skel and display of the engine.</p>
*
* @param en The engine.
* @return True if the predicate succeeded, otherwise false.
*/
public final boolean moniFirst(Engine en) {
switch (id) {
case SPECIAL_INTEGER:
Object[] temp = ((SkelCompound) en.skel).args;
BindCount[] ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Integer) && !(en.skel instanceof BigInteger))
return false;
return en.getNextRaw();
case SPECIAL_FLOAT:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Float) && !(en.skel instanceof Double))
return false;
return en.getNextRaw();
case SPECIAL_ATOM:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof SkelAtom))
return false;
return en.getNextRaw();
case SPECIAL_COMPOUND:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof SkelCompound))
return false;
return en.getNextRaw();
case SPECIAL_REFERENCE:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (en.skel instanceof AbstractSkel || en.skel instanceof Number)
return false;
return en.getNextRaw();
case SPECIAL_DECIMAL:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Long) && !(en.skel instanceof BigDecimal))
return false;
return en.getNextRaw();
case SPECIAL_NUMBER:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Number))
return false;
return en.getNextRaw();
case SPECIAL_CALLABLE:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof SkelAtom) && !(en.skel instanceof SkelCompound))
return false;
return en.getNextRaw();
case SPECIAL_ATOMIC:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (en.skel instanceof SkelVar || en.skel instanceof SkelCompound)
return false;
return en.getNextRaw();
case SPECIAL_FLOAT32:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Float))
return false;
return en.getNextRaw();
case SPECIAL_FLOAT64:
temp = ((SkelCompound) en.skel).args;
ref = en.display;
en.skel = temp[0];
en.display = ref;
en.deref();
if (!(en.skel instanceof Double))
return false;
return en.getNextRaw();
default:
throw new IllegalArgumentException(AbstractSpecial.OP_ILLEGAL_SPECIAL);
}
}
}

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