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src/java.xml/share/classes/com/sun/org/apache/xalan/internal/xsltc/compiler/Predicate.java

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   1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * @LastModified: Oct 2017
   4  */
   5 /*
   6  * Licensed to the Apache Software Foundation (ASF) under one or more
   7  * contributor license agreements.  See the NOTICE file distributed with
   8  * this work for additional information regarding copyright ownership.
   9  * The ASF licenses this file to You under the Apache License, Version 2.0
  10  * (the "License"); you may not use this file except in compliance with
  11  * the License.  You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21 
  22 package com.sun.org.apache.xalan.internal.xsltc.compiler;
  23 


  35 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.BooleanType;
  36 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  37 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.FilterGenerator;
  38 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.IntType;
  39 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  40 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.NumberType;
  41 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ReferenceType;
  42 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ResultTreeType;
  43 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TestGenerator;
  44 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  45 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  46 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
  47 import com.sun.org.apache.xalan.internal.xsltc.runtime.Operators;
  48 import java.util.ArrayList;
  49 import java.util.List;
  50 
  51 /**
  52  * @author Jacek Ambroziak
  53  * @author Santiago Pericas-Geertsen
  54  * @author Morten Jorgensen

  55  */
  56 final class Predicate extends Expression implements Closure {
  57 
  58     /**
  59      * The predicate's expression.
  60      */
  61     private Expression _exp = null;
  62 
  63     /**
  64      * This flag indicates if optimizations are turned on. The
  65      * method <code>dontOptimize()</code> can be called to turn
  66      * optimizations off.
  67      */
  68     private boolean _canOptimize = true;
  69 
  70     /**
  71      * Flag indicatig if the nth position optimization is on. It
  72      * is set in <code>typeCheck()</code>.
  73      */
  74     private boolean _nthPositionFilter = false;


   1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

   3  */
   4 /*
   5  * Licensed to the Apache Software Foundation (ASF) under one or more
   6  * contributor license agreements.  See the NOTICE file distributed with
   7  * this work for additional information regarding copyright ownership.
   8  * The ASF licenses this file to You under the Apache License, Version 2.0
   9  * (the "License"); you may not use this file except in compliance with
  10  * the License.  You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  */
  20 
  21 package com.sun.org.apache.xalan.internal.xsltc.compiler;
  22 


  34 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.BooleanType;
  35 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  36 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.FilterGenerator;
  37 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.IntType;
  38 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  39 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.NumberType;
  40 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ReferenceType;
  41 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ResultTreeType;
  42 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TestGenerator;
  43 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  44 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  45 import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
  46 import com.sun.org.apache.xalan.internal.xsltc.runtime.Operators;
  47 import java.util.ArrayList;
  48 import java.util.List;
  49 
  50 /**
  51  * @author Jacek Ambroziak
  52  * @author Santiago Pericas-Geertsen
  53  * @author Morten Jorgensen
  54  * @LastModified: Oct 2017
  55  */
  56 final class Predicate extends Expression implements Closure {
  57 
  58     /**
  59      * The predicate's expression.
  60      */
  61     private Expression _exp = null;
  62 
  63     /**
  64      * This flag indicates if optimizations are turned on. The
  65      * method <code>dontOptimize()</code> can be called to turn
  66      * optimizations off.
  67      */
  68     private boolean _canOptimize = true;
  69 
  70     /**
  71      * Flag indicatig if the nth position optimization is on. It
  72      * is set in <code>typeCheck()</code>.
  73      */
  74     private boolean _nthPositionFilter = false;


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