Triangle tools from the text book Programming Processors in Java.
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Triangle-Tools/Triangle.Compiler/src/main/java/triangle/ErrorReporter.java

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/*
* @(#)ErrorReporter.java 2.1 2003/10/07
*
* Copyright (C) 1999, 2003 D.A. Watt and D.F. Brown
* Dept. of Computing Science, University of Glasgow, Glasgow G12 8QQ Scotland
* and School of Computer and Math Sciences, The Robert Gordon University,
* St. Andrew Street, Aberdeen AB25 1HG, Scotland.
* All rights reserved.
*
* This software is provided free for educational use only. It may
* not be used for commercial purposes without the prior written permission
* of the authors.
*/
package triangle;
import triangle.syntacticAnalyzer.SourcePosition;
public class ErrorReporter {
int numErrors;
ErrorReporter() {
numErrors = 0;
}
public void reportError(String message, String tokenName, SourcePosition pos) {
System.out.print("ERROR: ");
for (int p = 0; p < message.length(); p++)
if (message.charAt(p) == '%')
System.out.print(tokenName);
else
System.out.print(message.charAt(p));
System.out.println(" " + pos.start + ".." + pos.finish);
numErrors++;
}
public void reportRestriction(String message) {
System.out.println("RESTRICTION: " + message);
}
}