bsh.ParseException Maven / Gradle / Ivy
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/*
* #%L
* The AIBench Shell Plugin
* %%
* Copyright (C) 2006 - 2017 Daniel Glez-Peña and Florentino Fdez-Riverola
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
/*
This file was auto generated, but has been modified since then. If we
need to regenerate it for some reason we should be careful to look at
the notes below.
All BeanShell modifications are demarcated by "Begin BeanShell
Modification - ... " and "End BeanShell Modification - ..."
Note: Please leave the ^M carriage return in the above auto-generated line
or JavaCC will complain about version on Win systems.
BeanShell Modification to generated file
----------------------------------------
- Added sourceFile attribute
setErrorSourceFile()
getErrorSourceFile()
- Modified getMessage() to print more tersely except on debug
(removed "Was expecting one of...)
- Added sourceFile info to getMessage()
- Made ParseException extend EvalError
- Modified constructors to use EvalError
- Override
getErrorLineNumber()
getErrorText()
- Add
toString()
*/
package bsh;
/**
* 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.
*/
// Begin BeanShell Modification - public, extend EvalError
public class ParseException extends EvalError {
// End BeanShell Modification - public, extend EvalError
// Begin BeanShell Modification - sourceFile
String sourceFile = "";
/**
* Used to add source file info to exception.
*
* @param file the source file to add.
*/
public void setErrorSourceFile(String file) {
this.sourceFile = file;
}
public String getErrorSourceFile() {
return sourceFile;
}
// End BeanShell Modification - sourceFile
/**
* 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: ParseException: <result of getMessage>
*
* @param currentTokenVal the current value of the token.
* @param expectedTokenSequencesVal the expected token sequence values.
* @param tokenImageVal the token imagen value.
*/
public ParseException(Token currentTokenVal, int[][] expectedTokenSequencesVal, String[] tokenImageVal) {
// Begin BeanShell Modification - constructor
this();
// End BeanShell Modification - constructor
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() {
// Begin BeanShell Modification - constructor
this("");
// End BeanShell Modification - constructor
specialConstructor = false;
}
public ParseException(String message) {
// Begin BeanShell Modification - super constructor args
// null node, null callstack, ParseException knows where the
// error is.
super(message, null, null);
// End BeanShell Modification - super constructor args
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;
// Begin BeanShell Modification - moved body to overloaded getMessage()
public String getMessage() {
return getMessage(false);
}
// End BeanShell Modification - moved body to overloaded getMessage()
/**
* 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.
*
* @param debug whether the debug mode is enabled or not.
* @return the error message.
*/
// Begin BeanShell Modification - added debug param
public String getMessage(boolean debug) {
// End BeanShell Modification - added debug param
if (!specialConstructor) {
return super.getMessage();
}
String expected = "";
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 += tokenImage[expectedTokenSequences[i][j]] + " ";
}
if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
expected += "...";
}
expected += eol + " ";
}
// Begin BeanShell Modification - added sourceFile info
String retval = "In file: " + sourceFile + " Encountered \"";
// End BeanShell Modification - added sourceFile info
Token tok = currentToken.next;
for (int i = 0; i < maxSize; i++) {
if (i != 0)
retval += " ";
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 + "." + eol;
// Begin BeanShell Modification - made conditional on debug
if (debug) {
if (expectedTokenSequences.length == 1) {
retval += "Was expecting:" + eol + " ";
} else {
retval += "Was expecting one of:" + eol + " ";
}
retval += expected;
}
// End BeanShell Modification - made conditional on debug
return retval;
}
/**
* The end of line string for this machine.
*/
protected String eol = System.getProperty("line.separator", "\n");
/**
* Used to convert raw characters to their escaped version when these raw
* version cannot be used as part of an ASCII string literal.
*
* @param str the string to escape.
* @return the escaped string.
*/
protected String add_escapes(String str) {
StringBuffer retval = new StringBuffer();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i)) {
case 0:
continue;
case '\b':
retval.append("\\b");
continue;
case '\t':
retval.append("\\t");
continue;
case '\n':
retval.append("\\n");
continue;
case '\f':
retval.append("\\f");
continue;
case '\r':
retval.append("\\r");
continue;
case '\"':
retval.append("\\\"");
continue;
case '\'':
retval.append("\\\'");
continue;
case '\\':
retval.append("\\\\");
continue;
default:
if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
String s = "0000" + Integer.toString(ch, 16);
retval.append("\\u" + s.substring(s.length() - 4, s.length()));
} else {
retval.append(ch);
}
continue;
}
}
return retval.toString();
}
// Begin BeanShell Modification - override error methods and toString
public int getErrorLineNumber() {
return currentToken.next.beginLine;
}
public String getErrorText() {
// copied from generated getMessage()
int maxSize = 0;
for (int i = 0; i < expectedTokenSequences.length; i++) {
if (maxSize < expectedTokenSequences[i].length)
maxSize = expectedTokenSequences[i].length;
}
String retval = "";
Token tok = currentToken.next;
for (int i = 0; i < maxSize; i++) {
if (i != 0)
retval += " ";
if (tok.kind == 0) {
retval += tokenImage[0];
break;
}
retval += add_escapes(tok.image);
tok = tok.next;
}
return retval;
}
public String toString() {
return getMessage();
}
// End BeanShell Modification - override error methods and toString
}
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