Source Code Cross Referenced for ParseException.java in  » Portal » Open-Portal » com » sun » portal » rproxy » connectionhandler » webdav » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » Open Portal » com.sun.portal.rproxy.connectionhandler.webdav 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 2.1 */
002:        /*
003:         * $Id : $
004:         * $Source : $
005:         * $Log: ParseException.java,v $
006:         * Revision 1.3  2005/11/30 11:27:25  ss150821
007:         * 6356996 - Srap Code base needs to save files in the unix file format and not windows
008:         *
009:         * Revision 1.2  2005/02/23 09:03:11  ss150821
010:         * RFE 6223490 - SRA Should use JDK based logging
011:         *
012:         * Revision 1.1  2003/04/15 05:22:10  mm132998
013:         * WebDAV support
014:         *
015:         *
016:         */
017:        package com.sun.portal.rproxy.connectionhandler.webdav;
018:
019:        /**
020:         * This exception is thrown when parse errors are encountered. You can
021:         * explicitly create objects of this exception type by calling the method
022:         * generateParseException in the generated parser.
023:         * 
024:         * You can modify this class to customize your error reporting mechanisms so
025:         * long as you retain the public fields.
026:         */
027:        public class ParseException extends Exception {
028:
029:            /**
030:             * This constructor is used by the method "generateParseException" in the
031:             * generated parser. Calling this constructor generates a new object of this
032:             * type with the fields "currentToken", "expectedTokenSequences", and
033:             * "tokenImage" set. The boolean flag "specialConstructor" is also set to
034:             * true to indicate that this constructor was used to create this object.
035:             * This constructor calls its super class with the empty string to force the
036:             * "toString" method of parent class "Throwable" to print the error message
037:             * in the form: ParseException: <result of getMessage>
038:             */
039:            public ParseException(Token currentTokenVal,
040:                    int[][] expectedTokenSequencesVal, String[] tokenImageVal) {
041:                super ("");
042:                specialConstructor = true;
043:                currentToken = currentTokenVal;
044:                expectedTokenSequences = expectedTokenSequencesVal;
045:                tokenImage = tokenImageVal;
046:            }
047:
048:            /**
049:             * The following constructors are for use by you for whatever purpose you
050:             * can think of. Constructing the exception in this manner makes the
051:             * exception behave in the normal way - i.e., as documented in the class
052:             * "Throwable". The fields "errorToken", "expectedTokenSequences", and
053:             * "tokenImage" do not contain relevant information. The JavaCC generated
054:             * code does not use these constructors.
055:             */
056:
057:            public ParseException() {
058:                super ();
059:                specialConstructor = false;
060:            }
061:
062:            public ParseException(String message) {
063:                super (message);
064:                specialConstructor = false;
065:            }
066:
067:            /**
068:             * This variable determines which constructor was used to create this object
069:             * and thereby affects the semantics of the "getMessage" method (see below).
070:             */
071:            protected boolean specialConstructor;
072:
073:            /**
074:             * This is the last token that has been consumed successfully. If this
075:             * object has been created due to a parse error, the token followng this
076:             * token will (therefore) be the first error token.
077:             */
078:            public Token currentToken;
079:
080:            /**
081:             * Each entry in this array is an array of integers. Each array of integers
082:             * represents a sequence of tokens (by their ordinal values) that is
083:             * expected at this point of the parse.
084:             */
085:            public int[][] expectedTokenSequences;
086:
087:            /**
088:             * This is a reference to the "tokenImage" array of the generated parser
089:             * within which the parse error occurred. This array is defined in the
090:             * generated ...Constants interface.
091:             */
092:            public String[] tokenImage;
093:
094:            /**
095:             * This method has the standard behavior when this object has been created
096:             * using the standard constructors. Otherwise, it uses "currentToken" and
097:             * "expectedTokenSequences" to generate a parse error message and returns
098:             * it. If this object has been created due to a parse error, and you do not
099:             * catch it (it gets thrown from the parser), then this method is called
100:             * during the printing of the final stack trace, and hence the correct error
101:             * message gets displayed.
102:             */
103:            public String getMessage() {
104:                if (!specialConstructor) {
105:                    return super .getMessage();
106:                }
107:                String expected = "";
108:                int maxSize = 0;
109:                for (int i = 0; i < expectedTokenSequences.length; i++) {
110:                    if (maxSize < expectedTokenSequences[i].length) {
111:                        maxSize = expectedTokenSequences[i].length;
112:                    }
113:                    for (int j = 0; j < expectedTokenSequences[i].length; j++) {
114:                        expected += tokenImage[expectedTokenSequences[i][j]]
115:                                + " ";
116:                    }
117:                    if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
118:                        expected += "...";
119:                    }
120:                    expected += eol + "    ";
121:                }
122:                String retval = "Encountered \"";
123:                Token tok = currentToken.next;
124:                for (int i = 0; i < maxSize; i++) {
125:                    if (i != 0)
126:                        retval += " ";
127:                    if (tok.kind == 0) {
128:                        retval += tokenImage[0];
129:                        break;
130:                    }
131:                    retval += add_escapes(tok.image);
132:                    tok = tok.next;
133:                }
134:                retval += "\" at line " + currentToken.next.beginLine
135:                        + ", column " + currentToken.next.beginColumn;
136:                retval += "." + eol;
137:                if (expectedTokenSequences.length == 1) {
138:                    retval += "Was expecting:" + eol + "    ";
139:                } else {
140:                    retval += "Was expecting one of:" + eol + "    ";
141:                }
142:                retval += expected;
143:                return retval;
144:            }
145:
146:            /**
147:             * The end of line string for this machine.
148:             */
149:            protected String eol = System.getProperty("line.separator", "\n");
150:
151:            /**
152:             * Used to convert raw characters to their escaped version when these raw
153:             * version cannot be used as part of an ASCII string literal.
154:             */
155:            protected String add_escapes(String str) {
156:                StringBuffer retval = new StringBuffer();
157:                char ch;
158:                for (int i = 0; i < str.length(); i++) {
159:                    switch (str.charAt(i)) {
160:                    case 0:
161:                        continue;
162:                    case '\b':
163:                        retval.append("\\b");
164:                        continue;
165:                    case '\t':
166:                        retval.append("\\t");
167:                        continue;
168:                    case '\n':
169:                        retval.append("\\n");
170:                        continue;
171:                    case '\f':
172:                        retval.append("\\f");
173:                        continue;
174:                    case '\r':
175:                        retval.append("\\r");
176:                        continue;
177:                    case '\"':
178:                        retval.append("\\\"");
179:                        continue;
180:                    case '\'':
181:                        retval.append("\\\'");
182:                        continue;
183:                    case '\\':
184:                        retval.append("\\\\");
185:                        continue;
186:                    default:
187:                        if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
188:                            String s = "0000" + Integer.toString(ch, 16);
189:                            retval.append("\\u"
190:                                    + s.substring(s.length() - 4, s.length()));
191:                        } else {
192:                            retval.append(ch);
193:                        }
194:                        continue;
195:                    }
196:                }
197:                return retval.toString();
198:            }
199:
200:        }
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