43 import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;
  44 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;
  45 import com.sun.org.apache.xerces.internal.xni.parser.XMLDTDContentModelSource;
  46 import com.sun.org.apache.xerces.internal.xni.parser.XMLDTDSource;
  47 import java.util.ArrayList;
  48 import java.util.HashMap;
  49 import java.util.Map;
  50 
  51 /**
  52  * A DTD grammar. This class implements the XNI handler interfaces
  53  * for DTD information so that it can build the appropriate validation
  54  * structures automatically from the callbacks.
  55  *
  56  * @xerces.internal
  57  *
  58  * @author Eric Ye, IBM
  59  * @author Jeffrey Rodriguez, IBM
  60  * @author Andy Clark, IBM
  61  * @author Neil Graham, IBM
  62  *
  63  * @version $Id: DTDGrammar.java,v 1.4 2010/08/11 07:18:37 joehw Exp $
  64  * @LastModified: Feb 2020
  65  */
  66 public class DTDGrammar
  67     implements XMLDTDHandler, XMLDTDContentModelHandler, EntityState, Grammar {
  68 
  69     //
  70     // Constants
  71     //
  72 
  73     /** Top level scope (-1). */
  74     public static final int TOP_LEVEL_SCOPE = -1;
  75 
  76     // private
  77 
  78     /** Chunk shift (8). */
  79     private static final int CHUNK_SHIFT = 8; // 2^8 = 256
  80 
  81     /** Chunk size (1 << CHUNK_SHIFT). */
  82     private static final int CHUNK_SIZE = (1 << CHUNK_SHIFT);
  83 

  43 import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;
  44 import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;
  45 import com.sun.org.apache.xerces.internal.xni.parser.XMLDTDContentModelSource;
  46 import com.sun.org.apache.xerces.internal.xni.parser.XMLDTDSource;
  47 import java.util.ArrayList;
  48 import java.util.HashMap;
  49 import java.util.Map;
  50 
  51 /**
  52  * A DTD grammar. This class implements the XNI handler interfaces
  53  * for DTD information so that it can build the appropriate validation
  54  * structures automatically from the callbacks.
  55  *
  56  * @xerces.internal
  57  *
  58  * @author Eric Ye, IBM
  59  * @author Jeffrey Rodriguez, IBM
  60  * @author Andy Clark, IBM
  61  * @author Neil Graham, IBM
  62  *

  63  * @LastModified: Feb 2020
  64  */
  65 public class DTDGrammar
  66     implements XMLDTDHandler, XMLDTDContentModelHandler, EntityState, Grammar {
  67 
  68     //
  69     // Constants
  70     //
  71 
  72     /** Top level scope (-1). */
  73     public static final int TOP_LEVEL_SCOPE = -1;
  74 
  75     // private
  76 
  77     /** Chunk shift (8). */
  78     private static final int CHUNK_SHIFT = 8; // 2^8 = 256
  79 
  80     /** Chunk size (1 << CHUNK_SHIFT). */
  81     private static final int CHUNK_SIZE = (1 << CHUNK_SHIFT);
  82