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/*******************************************************************************
* Copyright (c) 2015 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
package org.apache.lucene.demo.html;
/**
* This exception is thrown when parse errors are encountered.
* You can explicitly create objects of this exception type by
* calling the method generateParseException in the generated
* parser.
*
* You can modify this class to customize your error reporting
* mechanisms so long as you retain the public fields.
*/
public class ParseException extends Exception {
private static final long serialVersionUID = 1L;
/**
* This constructor is used by the method "generateParseException"
* in the generated parser. Calling this constructor generates
* a new object of this type with the fields "currentToken",
* "expectedTokenSequences", and "tokenImage" set. The boolean
* flag "specialConstructor" is also set to true to indicate that
* this constructor was used to create this object.
* This constructor calls its super class with the empty string
* to force the "toString" method of parent class "Throwable" to
* print the error message in the form:
* <pre>{@code
* ParseException: <result of getMessage>
* }</pre>
*/
public ParseException(Token currentTokenVal,
int[][] expectedTokenSequencesVal,
String[] tokenImageVal
)
{
super(""); //$NON-NLS-1$
specialConstructor = true;
currentToken = currentTokenVal;
expectedTokenSequences = expectedTokenSequencesVal;
tokenImage = tokenImageVal;
}
/**
* The following constructors are for use by you for whatever
* purpose you can think of. Constructing the exception in this
* manner makes the exception behave in the normal way - i.e., as
* documented in the class "Throwable". The fields "errorToken",
* "expectedTokenSequences", and "tokenImage" do not contain
* relevant information. The JavaCC generated code does not use
* these constructors.
*/
public ParseException() {
super();
specialConstructor = false;
}
public ParseException(String message) {
super(message);
specialConstructor = false;
}
/**
* This variable determines which constructor was used to create
* this object and thereby affects the semantics of the
* "getMessage" method (see below).
*/
protected boolean specialConstructor;
/**
* This is the last token that has been consumed successfully. If
* this object has been created due to a parse error, the token
* followng this token will (therefore) be the first error token.
*/
public Token currentToken;
/**
* Each entry in this array is an array of integers. Each array
* of integers represents a sequence of tokens (by their ordinal
* values) that is expected at this point of the parse.
*/
public int[][] expectedTokenSequences;
/**
* This is a reference to the "tokenImage" array of the generated
* parser within which the parse error occurred. This array is
* defined in the generated ...Constants interface.
*/
public String[] tokenImage;
/**
* This method has the standard behavior when this object has been
* created using the standard constructors. Otherwise, it uses
* "currentToken" and "expectedTokenSequences" to generate a parse
* error message and returns it. If this object has been created
* due to a parse error, and you do not catch it (it gets thrown
* from the parser), then this method is called during the printing
* of the final stack trace, and hence the correct error message
* gets displayed.
*/
@Override
public String getMessage() {
if (!specialConstructor) {
return super.getMessage();
}
StringBuilder expected = new StringBuilder();
int maxSize = 0;
for (int i = 0; i < expectedTokenSequences.length; i++) {
if (maxSize < expectedTokenSequences[i].length) {
maxSize = expectedTokenSequences[i].length;
}
for (int j = 0; j < expectedTokenSequences[i].length; j++) {
expected.append(tokenImage[expectedTokenSequences[i][j]]).append(" "); //$NON-NLS-1$
}
if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
expected.append("..."); //$NON-NLS-1$
}
expected.append(eol).append(" "); //$NON-NLS-1$
}
String retval = "Encountered \""; //$NON-NLS-1$
Token tok = currentToken.next;
for (int i = 0; i < maxSize; i++) {
if (i != 0) retval += " "; //$NON-NLS-1$
if (tok.kind == 0) {
retval += tokenImage[0];
break;
}
retval += add_escapes(tok.image);
tok = tok.next;
}
retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn; //$NON-NLS-1$ //$NON-NLS-2$
retval += "." + eol; //$NON-NLS-1$
if (expectedTokenSequences.length == 1) {
retval += "Was expecting:" + eol + " "; //$NON-NLS-1$ //$NON-NLS-2$
} else {
retval += "Was expecting one of:" + eol + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
retval += expected.toString();
return retval;
}
/**
* The end of line string for this machine.
*/
protected String eol = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$
/**
* Used to convert raw characters to their escaped version
* when these raw version cannot be used as part of an ASCII
* string literal.
*/
protected String add_escapes(String str) {
StringBuilder retval = new StringBuilder();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i))
{
case 0 :
continue;
case '\b':
retval.append("\\b"); //$NON-NLS-1$
continue;
case '\t':
retval.append("\\t"); //$NON-NLS-1$
continue;
case '\n':
retval.append("\\n"); //$NON-NLS-1$
continue;
case '\f':
retval.append("\\f"); //$NON-NLS-1$
continue;
case '\r':
retval.append("\\r"); //$NON-NLS-1$
continue;
case '\"':
retval.append("\\\""); //$NON-NLS-1$
continue;
case '\'':
retval.append("\\\'"); //$NON-NLS-1$
continue;
case '\\':
retval.append("\\\\"); //$NON-NLS-1$
continue;
default:
if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
String s = "0000" + Integer.toString(ch, 16); //$NON-NLS-1$
retval.append("\\u" + s.substring(s.length() - 4, s.length())); //$NON-NLS-1$
} else {
retval.append(ch);
}
continue;
}
}
return retval.toString();
}
}
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