TokenManager


1   package persistence.antlr;
2   
3   /* ANTLR Translator Generator
4    * Project led by Terence Parr at http://www.jGuru.com
5    * Software rights: http://www.antlr.org/license.html
6    *
7    */
8   
9   import java.util.Hashtable  ;
10  import java.util.Enumeration  ;
11  
12  import persistence.antlr.collections.impl.Vector;
13  
14  /** Interface that describes the set of defined tokens */
15  interface TokenManager {
16      public Object   clone();
17  
18      /** define a token symbol */
19      public void define(TokenSymbol ts);
20  
21      /** Get the name of the token manager */
22      public String   getName();
23  
24      /** Get a token string by index */
25      public String   getTokenStringAt(int idx);
26  
27      /** Get the TokenSymbol for a string */
28      public TokenSymbol getTokenSymbol(String   sym);
29  
30      public TokenSymbol getTokenSymbolAt(int idx);
31  
32      /** Get an enumerator over the symbol table */
33      public Enumeration   getTokenSymbolElements();
34  
35      public Enumeration   getTokenSymbolKeys();
36  
37      /** Get the token vocabulary (read-only).
38       * @return A Vector of Strings indexed by token type */
39      public Vector getVocabulary();
40  
41      /** Is this token manager read-only? */
42      public boolean isReadOnly();
43  
44      public void mapToTokenSymbol(String   name, TokenSymbol sym);
45  
46      /** Get the highest token type in use */
47      public int maxTokenType();
48  
49      /** Get the next unused token type */
50      public int nextTokenType();
51  
52      public void setName(String   n);
53  
54      public void setReadOnly(boolean ro);
55  
56      /** Is a token symbol defined? */
57      public boolean tokenDefined(String   symbol);
58  }
59
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