| package com.googlecode.prolog_cafe.builtin; |
| import com.googlecode.prolog_cafe.lang.IntegerTerm; |
| import com.googlecode.prolog_cafe.lang.Operation; |
| import com.googlecode.prolog_cafe.lang.Predicate; |
| import com.googlecode.prolog_cafe.lang.Prolog; |
| import com.googlecode.prolog_cafe.lang.SymbolTerm; |
| import com.googlecode.prolog_cafe.lang.Term; |
| import com.googlecode.prolog_cafe.lang.Token; |
| /** |
| * <code>'$atom_type0'/2</code><br> |
| * @author Mutsunori Banbara (banbara@kobe-u.ac.jp) |
| * @author Naoyuki Tamura (tamura@kobe-u.ac.jp) |
| * @version 1.0 |
| */ |
| class PRED_$atom_type0_2 extends Predicate.P2 { |
| public PRED_$atom_type0_2(Term a1, Term a2, Operation cont){ |
| arg1 = a1; |
| arg2 = a2; |
| this.cont = cont; |
| } |
| |
| @Override |
| public Operation exec(Prolog engine) { |
| engine.setB0(); |
| Term a1, a2; |
| int type; |
| a1 = arg1; |
| a2 = arg2; |
| |
| a1 = a1.dereference(); |
| if(! (a1 instanceof SymbolTerm)) |
| return engine.fail(); |
| type = Token.getStringType(((SymbolTerm)a1).name()); |
| if(! a2.unify(new IntegerTerm(type), engine.trail)) |
| return engine.fail(); |
| return cont; |
| } |
| } |