Implemented Evaluation

MathPad/MPParseError.m

@@ -0,0 +1,28 @@
+//
+//  MPParseError.m
+//  MathPad
+//
+//  Created by Kim Wittenburg on 06.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPParseError.h"
+
+@implementation MPParseError
+
+- (instancetype)initWithErrorIndex:(NSUInteger)errorIndex errorMessageKey:(NSString *)errorMessageKey
+{
+    self = [super init];
+    if (self) {
+        _errorIndex = errorIndex;
+        _localizedErrorMessage = NSLocalizedString(errorMessageKey, nil);
+    }
+    return self;
+}
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"MPParseError<at=%ld message=\"%@\">", self.errorIndex, self.localizedErrorMessage];
+}
+
+@end