org.nuiton.jaxx.compiler.java.parser.TokenMgrError Maven / Gradle / Ivy
/*
* #%L
* JAXX :: Compiler
* %%
* Copyright (C) 2008 - 2020 Code Lutin, Ultreia.io
* %%
* 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. TokenMgrError.java Version 3.0 */
package org.nuiton.jaxx.compiler.java.parser;
public class TokenMgrError extends Error {
/*
* Ordinals for various reasons why an Error of this type can be thrown.
*/
/** Lexical error occured. */
static final int LEXICAL_ERROR = 0;
/** An attempt wass made to create a second instance of a static token manager. */
static final int STATIC_LEXER_ERROR = 1;
/** Tried to change to an invalid lexical state. */
static final int INVALID_LEXICAL_STATE = 2;
/** Detected (and bailed out of) an infinite loop in the token manager. */
static final int LOOP_DETECTED = 3;
/**
* Indicates the reason why the exception is thrown. It will have
* one of the above 4 values.
*/
int errorCode;
private static final long serialVersionUID = -9131500865453532454L;
/**
* Replaces unprintable characters by their espaced (or unicode escaped)
* equivalents in the given string
*
* @param str text to treate
* @return the treated text
*/
protected static String addEscapes(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");
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").append(s.substring(s.length() - 4, s.length()));
} else {
retval.append(ch);
}
}
}
return retval.toString();
}
/**
* @param EOFSeen : indicates if EOF caused the lexicl error
* @param lexState : lexical state in which this error occured
* @param errorLine : line number when the error occured
* @param errorColumn : column number when the error occured
* @param errorAfter : prefix that was seen before this error occured
* @param curChar : the offending character
* Note: You can customize the lexical error message by modifying this method.
* @return a detailed message for the Error when it is thrown by the
* token manager to indicate a lexical error.
*/
protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
return "Lexical error at line " +
errorLine + ", column " +
errorColumn + ". Encountered: " +
(EOFSeen ? " " : "\"" + addEscapes(String.valueOf(curChar)) + "\"" + " (" + (int) curChar + "), ") +
"after : \"" + addEscapes(errorAfter) + "\"";
}
/**
* You can also modify the body of this method to customize your error messages.
* For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
* of end-users concern, so you can return something like :
*
* "Internal Error : Please file a bug report .... "
*
* from this method for such cases in the release version of your parser.
*/
@Override
public String getMessage() {
return super.getMessage();
}
/*
* Constructors of various flavors follow.
*/
public TokenMgrError() {
}
public TokenMgrError(String message, int reason) {
super(message);
errorCode = reason;
}
public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
}
}