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1   /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 4.1 */
2   /* JavaCCOptions:KEEP_LINE_COL=null */
3   /** 
4    * JSP Parser for PMD.
5    * @author Pieter ? Application Engineers NV/SA ? http://www.ae.be
6    */
7   
8   package net.sourceforge.pmd.jsp.ast;
9   
10  /**
11   * This exception is thrown when parse errors are encountered.
12   * You can explicitly create objects of this exception type by
13   * calling the method generateParseException in the generated
14   * parser.
15   *
16   * You can modify this class to customize your error reporting
17   * mechanisms so long as you retain the public fields.
18   */
19  public class ParseException extends net.sourceforge.pmd.ast.ParseException {
20  
21    /**
22     * This constructor is used by the method "generateParseException"
23     * in the generated parser.  Calling this constructor generates
24     * a new object of this type with the fields "currentToken",
25     * "expectedTokenSequences", and "tokenImage" set.  The boolean
26     * flag "specialConstructor" is also set to true to indicate that
27     * this constructor was used to create this object.
28     * This constructor calls its super class with the empty string
29     * to force the "toString" method of parent class "Throwable" to
30     * print the error message in the form:
31     *     ParseException: <result of getMessage>
32     */
33    public ParseException(Token currentTokenVal,
34                          int[][] expectedTokenSequencesVal,
35                          String[] tokenImageVal
36                         )
37    {
38      super("");
39      specialConstructor = true;
40      currentToken = currentTokenVal;
41      expectedTokenSequences = expectedTokenSequencesVal;
42      tokenImage = tokenImageVal;
43    }
44  
45    /**
46     * The following constructors are for use by you for whatever
47     * purpose you can think of.  Constructing the exception in this
48     * manner makes the exception behave in the normal way - i.e., as
49     * documented in the class "Throwable".  The fields "errorToken",
50     * "expectedTokenSequences", and "tokenImage" do not contain
51     * relevant information.  The JavaCC generated code does not use
52     * these constructors.
53     */
54  
55    public ParseException() {
56      super();
57      specialConstructor = false;
58    }
59  
60    /** Constructor with message. */
61    public ParseException(String message) {
62      super(message);
63      specialConstructor = false;
64    }
65  
66    /**
67     * This variable determines which constructor was used to create
68     * this object and thereby affects the semantics of the
69     * "getMessage" method (see below).
70     */
71    protected boolean specialConstructor;
72  
73    /**
74     * This is the last token that has been consumed successfully.  If
75     * this object has been created due to a parse error, the token
76     * followng this token will (therefore) be the first error token.
77     */
78    public Token currentToken;
79  
80    /**
81     * Each entry in this array is an array of integers.  Each array
82     * of integers represents a sequence of tokens (by their ordinal
83     * values) that is expected at this point of the parse.
84     */
85    public int[][] expectedTokenSequences;
86  
87    /**
88     * This is a reference to the "tokenImage" array of the generated
89     * parser within which the parse error occurred.  This array is
90     * defined in the generated ...Constants interface.
91     */
92    public String[] tokenImage;
93  
94    /**
95     * This method has the standard behavior when this object has been
96     * created using the standard constructors.  Otherwise, it uses
97     * "currentToken" and "expectedTokenSequences" to generate a parse
98     * error message and returns it.  If this object has been created
99     * due to a parse error, and you do not catch it (it gets thrown
100    * from the parser), then this method is called during the printing
101    * of the final stack trace, and hence the correct error message
102    * gets displayed.
103    */
104   public String getMessage() {
105     if (!specialConstructor) {
106       return super.getMessage();
107     }
108     StringBuffer expected = new StringBuffer();
109     int maxSize = 0;
110     for (int i = 0; i < expectedTokenSequences.length; i++) {
111       if (maxSize < expectedTokenSequences[i].length) {
112         maxSize = expectedTokenSequences[i].length;
113       }
114       for (int j = 0; j < expectedTokenSequences[i].length; j++) {
115         expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
116       }
117       if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
118         expected.append("...");
119       }
120       expected.append(eol).append("    ");
121     }
122     String retval = "Encountered \"";
123     Token tok = currentToken.next;
124     for (int i = 0; i < maxSize; i++) {
125       if (i != 0) retval += " ";
126       if (tok.kind == 0) {
127         retval += tokenImage[0];
128         break;
129       }
130       retval += " " + tokenImage[tok.kind];
131       retval += " \"";
132       retval += add_escapes(tok.image);
133       retval += " \"";
134       tok = tok.next;
135     }
136     retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
137     retval += "." + eol;
138     if (expectedTokenSequences.length == 1) {
139       retval += "Was expecting:" + eol + "    ";
140     } else {
141       retval += "Was expecting one of:" + eol + "    ";
142     }
143     retval += expected.toString();
144     return retval;
145   }
146 
147   /**
148    * The end of line string for this machine.
149    */
150   protected String eol = System.getProperty("line.separator", "\n");
151 
152   /**
153    * Used to convert raw characters to their escaped version
154    * when these raw version cannot be used as part of an ASCII
155    * string literal.
156    */
157   protected String add_escapes(String str) {
158       StringBuffer retval = new StringBuffer();
159       char ch;
160       for (int i = 0; i < str.length(); i++) {
161         switch (str.charAt(i))
162         {
163            case 0 :
164               continue;
165            case '\b':
166               retval.append("\\b");
167               continue;
168            case '\t':
169               retval.append("\\t");
170               continue;
171            case '\n':
172               retval.append("\\n");
173               continue;
174            case '\f':
175               retval.append("\\f");
176               continue;
177            case '\r':
178               retval.append("\\r");
179               continue;
180            case '\"':
181               retval.append("\\\"");
182               continue;
183            case '\'':
184               retval.append("\\\'");
185               continue;
186            case '\\':
187               retval.append("\\\\");
188               continue;
189            default:
190               if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
191                  String s = "0000" + Integer.toString(ch, 16);
192                  retval.append("\\u" + s.substring(s.length() - 4, s.length()));
193               } else {
194                  retval.append(ch);
195               }
196               continue;
197         }
198       }
199       return retval.toString();
200    }
201 
202 }
203 /* JavaCC - OriginalChecksum=47ba7a613b44c98f64aa3789642241bf (do not edit this line) */