source: java/FramclipsePlugin/src/main/java/com/framsticks/framclipse/internal/parser/TokenMgrError.java @ 193

Last change on this file since 193 was 193, checked in by Maciej Komosinski, 10 years ago

Set svn:eol-style native for all textual files

  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/plain
File size: 4.1 KB
Line 
1/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
2package com.framsticks.framclipse.internal.parser;
3
4public class TokenMgrError extends Error
5{
6   /*
7    * Ordinals for various reasons why an Error of this type can be thrown.
8    */
9
10   /**
11    * Lexical error occured.
12    */
13   static final int LEXICAL_ERROR = 0;
14
15   /**
16    * An attempt wass made to create a second instance of a static token manager.
17    */
18   static final int STATIC_LEXER_ERROR = 1;
19
20   /**
21    * Tried to change to an invalid lexical state.
22    */
23   static final int INVALID_LEXICAL_STATE = 2;
24
25   /**
26    * Detected (and bailed out of) an infinite loop in the token manager.
27    */
28   static final int LOOP_DETECTED = 3;
29
30   /**
31    * Indicates the reason why the exception is thrown. It will have
32    * one of the above 4 values.
33    */
34   int errorCode;
35
36   /**
37    * Replaces unprintable characters by their espaced (or unicode escaped)
38    * equivalents in the given string
39    */
40   protected static final String addEscapes(String str) {
41      StringBuffer retval = new StringBuffer();
42      char ch;
43      for (int i = 0; i < str.length(); i++) {
44        switch (str.charAt(i))
45        {
46           case 0 :
47              continue;
48           case '\b':
49              retval.append("\\b");
50              continue;
51           case '\t':
52              retval.append("\\t");
53              continue;
54           case '\n':
55              retval.append("\\n");
56              continue;
57           case '\f':
58              retval.append("\\f");
59              continue;
60           case '\r':
61              retval.append("\\r");
62              continue;
63           case '\"':
64              retval.append("\\\"");
65              continue;
66           case '\'':
67              retval.append("\\\'");
68              continue;
69           case '\\':
70              retval.append("\\\\");
71              continue;
72           default:
73              if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
74                 String s = "0000" + Integer.toString(ch, 16);
75                 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
76              } else {
77                 retval.append(ch);
78              }
79              continue;
80        }
81      }
82      return retval.toString();
83   }
84
85   /**
86    * Returns a detailed message for the Error when it is thrown by the
87    * token manager to indicate a lexical error.
88    * Parameters :
89    *    EOFSeen     : indicates if EOF caused the lexicl error
90    *    curLexState : lexical state in which this error occured
91    *    errorLine   : line number when the error occured
92    *    errorColumn : column number when the error occured
93    *    errorAfter  : prefix that was seen before this error occured
94    *    curchar     : the offending character
95    * Note: You can customize the lexical error message by modifying this method.
96    */
97   protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
98      return("Lexical error at line " +
99           errorLine + ", column " +
100           errorColumn + ".  Encountered: " +
101           (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
102           "after : \"" + addEscapes(errorAfter) + "\"");
103   }
104
105   /**
106    * You can also modify the body of this method to customize your error messages.
107    * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
108    * of end-users concern, so you can return something like :
109    *
110    *     "Internal Error : Please file a bug report .... "
111    *
112    * from this method for such cases in the release version of your parser.
113    */
114   public String getMessage() {
115      return super.getMessage();
116   }
117
118   /*
119    * Constructors of various flavors follow.
120    */
121
122   public TokenMgrError() {
123   }
124
125   public TokenMgrError(String message, int reason) {
126      super(message);
127      errorCode = reason;
128   }
129
130   public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
131      this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
132   }
133}
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