001: /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
002: /*
003: This file was auto generated, but has been modified since then. If we
004: need to regenerate it for some reason we should be careful to look at
005: the notes below.
006:
007: All BeanShell modifications are demarcated by "Begin BeanShell
008: Modification - ... " and "End BeanShell Modification - ..."
009:
010: Note: Please leave the ^M carriage return in the above auto-generated line
011: or JavaCC will complain about version on Win systems.
012:
013: BeanShell Modification to generated file
014: ----------------------------------------
015:
016: - Added sourceFile attribute
017: setErrorSourceFile()
018: getErrorSourceFile()
019: - Modified getMessage() to print more tersely except on debug
020: (removed "Was expecting one of...)
021: - Added sourceFile info to getMessage()
022: - Made ParseException extend EvalError
023: - Modified constructors to use EvalError
024: - Override
025: getErrorLineNumber()
026: getErrorText()
027: - Add
028: toString()
029:
030: */
031:
032: package org.gjt.sp.jedit.bsh;
033:
034: /**
035: * This exception is thrown when parse errors are encountered.
036: * You can explicitly create objects of this exception type by
037: * calling the method generateParseException in the generated
038: * parser.
039: *
040: * You can modify this class to customize your error reporting
041: * mechanisms so long as you retain the public fields.
042: */
043:
044: // Begin BeanShell Modification - public, extend EvalError
045: public class ParseException extends EvalError {
046: // End BeanShell Modification - public, extend EvalError
047:
048: // Begin BeanShell Modification - sourceFile
049:
050: String sourceFile = "<unknown>";
051:
052: /**
053: Used to add source file info to exception
054: */
055: public void setErrorSourceFile(String file) {
056: this .sourceFile = file;
057: }
058:
059: public String getErrorSourceFile() {
060: return sourceFile;
061: }
062:
063: // End BeanShell Modification - sourceFile
064:
065: /**
066: * This constructor is used by the method "generateParseException"
067: * in the generated parser. Calling this constructor generates
068: * a new object of this type with the fields "currentToken",
069: * "expectedTokenSequences", and "tokenImage" set. The boolean
070: * flag "specialConstructor" is also set to true to indicate that
071: * this constructor was used to create this object.
072: * This constructor calls its super class with the empty string
073: * to force the "toString" method of parent class "Throwable" to
074: * print the error message in the form:
075: * ParseException: <result of getMessage>
076: */
077: public ParseException(Token currentTokenVal,
078: int[][] expectedTokenSequencesVal, String[] tokenImageVal) {
079: // Begin BeanShell Modification - constructor
080: this ();
081: // End BeanShell Modification - constructor
082: specialConstructor = true;
083: currentToken = currentTokenVal;
084: expectedTokenSequences = expectedTokenSequencesVal;
085: tokenImage = tokenImageVal;
086: }
087:
088: /**
089: * The following constructors are for use by you for whatever
090: * purpose you can think of. Constructing the exception in this
091: * manner makes the exception behave in the normal way - i.e., as
092: * documented in the class "Throwable". The fields "errorToken",
093: * "expectedTokenSequences", and "tokenImage" do not contain
094: * relevant information. The JavaCC generated code does not use
095: * these constructors.
096: */
097:
098: public ParseException() {
099: // Begin BeanShell Modification - constructor
100: this ("");
101: // End BeanShell Modification - constructor
102: specialConstructor = false;
103: }
104:
105: public ParseException(String message) {
106: // Begin BeanShell Modification - super constructor args
107: // null node, null callstack, ParseException knows where the error is.
108: super (message, null, null);
109: // End BeanShell Modification - super constructor args
110: specialConstructor = false;
111: }
112:
113: /**
114: * This variable determines which constructor was used to create
115: * this object and thereby affects the semantics of the
116: * "getMessage" method (see below).
117: */
118: protected boolean specialConstructor;
119:
120: /**
121: * This is the last token that has been consumed successfully. If
122: * this object has been created due to a parse error, the token
123: * followng this token will (therefore) be the first error token.
124: */
125: public Token currentToken;
126:
127: /**
128: * Each entry in this array is an array of integers. Each array
129: * of integers represents a sequence of tokens (by their ordinal
130: * values) that is expected at this point of the parse.
131: */
132: public int[][] expectedTokenSequences;
133:
134: /**
135: * This is a reference to the "tokenImage" array of the generated
136: * parser within which the parse error occurred. This array is
137: * defined in the generated ...Constants interface.
138: */
139: public String[] tokenImage;
140:
141: // Begin BeanShell Modification - moved body to overloaded getMessage()
142: public String getMessage() {
143: return getMessage(false);
144: }
145:
146: // End BeanShell Modification - moved body to overloaded getMessage()
147:
148: /**
149: * This method has the standard behavior when this object has been
150: * created using the standard constructors. Otherwise, it uses
151: * "currentToken" and "expectedTokenSequences" to generate a parse
152: * error message and returns it. If this object has been created
153: * due to a parse error, and you do not catch it (it gets thrown
154: * from the parser), then this method is called during the printing
155: * of the final stack trace, and hence the correct error message
156: * gets displayed.
157: */
158: // Begin BeanShell Modification - added debug param
159: public String getMessage(boolean debug) {
160: // End BeanShell Modification - added debug param
161: if (!specialConstructor) {
162: return super .getMessage();
163: }
164: String expected = "";
165: int maxSize = 0;
166: for (int i = 0; i < expectedTokenSequences.length; i++) {
167: if (maxSize < expectedTokenSequences[i].length) {
168: maxSize = expectedTokenSequences[i].length;
169: }
170: for (int j = 0; j < expectedTokenSequences[i].length; j++) {
171: expected += tokenImage[expectedTokenSequences[i][j]]
172: + " ";
173: }
174: if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
175: expected += "...";
176: }
177: expected += eol + " ";
178: }
179: // Begin BeanShell Modification - added sourceFile info
180: String retval = "In file: " + sourceFile + " Encountered \"";
181: // End BeanShell Modification - added sourceFile info
182: Token tok = currentToken.next;
183: for (int i = 0; i < maxSize; i++) {
184: if (i != 0)
185: retval += " ";
186: if (tok.kind == 0) {
187: retval += tokenImage[0];
188: break;
189: }
190: retval += add_escapes(tok.image);
191: tok = tok.next;
192: }
193: retval += "\" at line " + currentToken.next.beginLine
194: + ", column " + currentToken.next.beginColumn + "."
195: + eol;
196:
197: // Begin BeanShell Modification - made conditional on debug
198: if (debug) {
199: if (expectedTokenSequences.length == 1) {
200: retval += "Was expecting:" + eol + " ";
201: } else {
202: retval += "Was expecting one of:" + eol + " ";
203: }
204:
205: retval += expected;
206: }
207: // End BeanShell Modification - made conditional on debug
208:
209: return retval;
210: }
211:
212: /**
213: * The end of line string for this machine.
214: */
215: protected String eol = System.getProperty("line.separator", "\n");
216:
217: /**
218: * Used to convert raw characters to their escaped version
219: * when these raw version cannot be used as part of an ASCII
220: * string literal.
221: */
222: protected String add_escapes(String str) {
223: StringBuffer retval = new StringBuffer();
224: char ch;
225: for (int i = 0; i < str.length(); i++) {
226: switch (str.charAt(i)) {
227: case 0:
228: continue;
229: case '\b':
230: retval.append("\\b");
231: continue;
232: case '\t':
233: retval.append("\\t");
234: continue;
235: case '\n':
236: retval.append("\\n");
237: continue;
238: case '\f':
239: retval.append("\\f");
240: continue;
241: case '\r':
242: retval.append("\\r");
243: continue;
244: case '\"':
245: retval.append("\\\"");
246: continue;
247: case '\'':
248: retval.append("\\\'");
249: continue;
250: case '\\':
251: retval.append("\\\\");
252: continue;
253: default:
254: if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
255: String s = "0000" + Integer.toString(ch, 16);
256: retval.append("\\u"
257: + s.substring(s.length() - 4, s.length()));
258: } else {
259: retval.append(ch);
260: }
261: continue;
262: }
263: }
264: return retval.toString();
265: }
266:
267: // Begin BeanShell Modification - override error methods and toString
268:
269: public int getErrorLineNumber() {
270: return currentToken.next.beginLine;
271: }
272:
273: public String getErrorText() {
274: // copied from generated getMessage()
275: int maxSize = 0;
276: for (int i = 0; i < expectedTokenSequences.length; i++) {
277: if (maxSize < expectedTokenSequences[i].length)
278: maxSize = expectedTokenSequences[i].length;
279: }
280:
281: String retval = "";
282: Token tok = currentToken.next;
283: for (int i = 0; i < maxSize; i++) {
284: if (i != 0)
285: retval += " ";
286: if (tok.kind == 0) {
287: retval += tokenImage[0];
288: break;
289: }
290: retval += add_escapes(tok.image);
291: tok = tok.next;
292: }
293:
294: return retval;
295: }
296:
297: public String toString() {
298: return getMessage();
299: }
300:
301: // End BeanShell Modification - override error methods and toString
302:
303: }
|