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package com.jantuomi.borker.exception;
import java.util.HashMap;
import java.util.Map;
/**
* Created by jan on 12.6.2016.
*/
public class InterpreterException extends Exception {
public enum ExceptionType {
IllegalTokenError,
SyntaxError,
TypeError,
ArgumentError,
UndeclaredSymbolError
}
public static Map<ExceptionType, String> errorTexts = new HashMap<>();
static {
errorTexts.put(ExceptionType.IllegalTokenError, "Unknown or illegal token %s found.");
errorTexts.put(ExceptionType.SyntaxError, "Unexpected %s.");
errorTexts.put(ExceptionType.TypeError, "Incompatible types %s and %s.");
errorTexts.put(ExceptionType.ArgumentError, "The parameter list given to function %s is either of wrong length or the parameters are of wrong type. Actual: %s");
errorTexts.put(ExceptionType.UndeclaredSymbolError, "No symbol %s defined, parameters: [%s].");
}
private ExceptionType exceptionType;
private String completeMessage;
public InterpreterException(ExceptionType exceptionType, int line, String... args) {
super(exceptionType.toString(), null, false, false);
this.exceptionType = exceptionType;
this.completeMessage = formatMessage(exceptionType.toString() + ": " + what(exceptionType), line, args);
}
private static String formatMessage(String message, int line, String... args) {
message = String.format(message, args);
return String.format("\nline %d: ", line) + message;
}
public static String what(ExceptionType type) {
return errorTexts.get(type);
}
@Override
public void printStackTrace() {
System.err.println(completeMessage);
}
}
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