package net.sourceforge.pmd.lang.vm.ast;
/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
public class TokenMgrError extends RuntimeException {
/*
* Ordinals for various reasons why an Error of this type can be thrown.
*/
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* 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;
/*
* Constructors of various flavors follow.
*/
public TokenMgrError() {
}
public TokenMgrError(final String message, final int reason) {
super(message);
errorCode = reason;
}
public TokenMgrError(final boolean eofSeen, final int lexState, final int errorLine, final int errorColumn,
final String errorAfter, final char curChar, final int reason) {
this(lexicalError(eofSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
}
/**
* Replaces unprintable characters by their espaced (or unicode escaped)
* equivalents in the given string
*/
protected static final String addEscapes(final String str) {
final StringBuffer retval = new StringBuffer();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i)) {
case 0:
break;
case '\b':
retval.append("\\b");
break;
case '\t':
retval.append("\\t");
break;
case '\n':
retval.append("\\n");
break;
case '\f':
retval.append("\\f");
break;
case '\r':
retval.append("\\r");
break;
case '\"':
retval.append("\\\"");
break;
case '\'':
retval.append("\\\'");
break;
case '\\':
retval.append("\\\\");
break;
default:
ch = str.charAt(i);
if (ch < 0x20 || ch > 0x7e) {
final String s = "0000" + Integer.toString(ch, 16);
retval.append("\\u" + s.substring(s.length() - 4, s.length()));
} else {
retval.append(ch);
}
break;
}
}
return retval.toString();
}
/**
* Returns a detailed message for the Error when it is thrown by the token
* manager to indicate a lexical error. Parameters : EOFSeen : indicates if
* EOF caused the lexicl error curLexState : lexical state in which this
* error occured errorLine : line number when the error occured errorColumn
* : column number when the error occured errorAfter : prefix that was seen
* before this error occured curchar : the offending character Note: You can
* customize the lexical error message by modifying this method.
*/
protected static String lexicalError(final boolean eofSeen, final int lexState, final int errorLine,
final int errorColumn, final String errorAfter, final char curChar) {
return ("Lexical error at line " + errorLine + ", column " + errorColumn + ". Encountered: "
+ (eofSeen ? "<EOF> "
: ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int) curChar + "), ")
+ "after : \"" + addEscapes(errorAfter) + "\"");
}
}