Cleaned Code by Removing Location Tracking for Errors

MathPad/MPSumFunction.m

@@ -11,6 +11,8 @@
 
 #import "MPEvaluationContext.h"
 
+#import "MPExpressionTree.h"
+
 @implementation MPSumFunction
 
 MPFunctionAccessorImplementation(StartExpression, _startExpression)
@@ -24,7 +26,7 @@ MPFunctionAccessorImplementation(SumExpression, _sumExpression)
 
 #pragma mark Evaluating Functions
 
-- (BOOL)validate:(MPParseError *__autoreleasing *)error
+- (BOOL)validate:(NSError *__autoreleasing *)error
 {
     MPExpressionTree *startTree = [self.startExpression parse];
     if (![startTree validateExpectingVariableDefinition:YES error:error]) {
@@ -67,21 +69,6 @@ MPFunctionAccessorImplementation(SumExpression, _sumExpression)
 }
 
 #pragma mark Working With Functions
-/*
-- (BOOL)isEqualToFunction:(MPFunction *)aFunction
-{
-    if (![aFunction isKindOfClass:[MPSumFunction class]]) {
-        return NO;
-    }
-    MPSumFunction *sumFunction = (MPSumFunction *)aFunction;
-    if (![self.startExpression isEqualToExpression:sumFunction.startExpression]) {
-        return NO;
-    }
-    if (![self.targetExpression isEqualToExpression:sumFunction.targetExpression]) {
-        return NO;
-    }
-    return [self.sumExpression isEqualToExpression:sumFunction.sumExpression];
-}*/
 
 - (NSString *)description
 {