TokenManager


1   package antlr;
2   
3   /* ANTLR Translator Generator
4    * Project led by Terence Parr at http://www.jGuru.com
5    * Software rights: http://www.antlr.org/RIGHTS.html
6    *
7    * $Id: //depot/code/org.antlr/main/main/antlr/TokenManager.java#4 $
8    */
9   
10  import java.util.Hashtable  ;
11  import java.util.Enumeration  ;
12  
13  import antlr.collections.impl.Vector;
14  
15  /** Interface that describes the set of defined tokens */
16  interface TokenManager {
17      public Object   clone();
18  
19      /** define a token symbol */
20      public void define(TokenSymbol ts);
21  
22      /** Get the name of the token manager */
23      public String   getName();
24  
25      /** Get a token string by index */
26      public String   getTokenStringAt(int idx);
27  
28      /** Get the TokenSymbol for a string */
29      public TokenSymbol getTokenSymbol(String   sym);
30  
31      public TokenSymbol getTokenSymbolAt(int idx);
32  
33      /** Get an enumerator over the symbol table */
34      public Enumeration   getTokenSymbolElements();
35  
36      public Enumeration   getTokenSymbolKeys();
37  
38      /** Get the token vocabulary (read-only).
39       * @return A Vector of Strings indexed by token type */
40      public Vector getVocabulary();
41  
42      /** Is this token manager read-only? */
43      public boolean isReadOnly();
44  
45      public void mapToTokenSymbol(String   name, TokenSymbol sym);
46  
47      /** Get the highest token type in use */
48      public int maxTokenType();
49  
50      /** Get the next unused token type */
51      public int nextTokenType();
52  
53      public void setName(String   n);
54  
55      public void setReadOnly(boolean ro);
56  
57      /** Is a token symbol defined? */
58      public boolean tokenDefined(String   symbol);
59  }
60
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