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POC# Preprocessor
 

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    <p>While the C# spec does include a pre-processor and basic directives (#define, #if, etc), the language does not have the same flexible pre-processor found in languages such as C/C++. I believe the lack of such a flexible pre-processor was a design decision made by Anders Hejlsberg (although, unfortunately, I can't find reference to this now). From experience, this is certainly a good decision, as there were some really terrible un-maintainable macros created back when I was doing a lot of C/C++. </p> <p>That said, there are a number of scenarios where I could find a slightly more flexible pre-processor to be useful. Code such as the following could be improved by some simple pre-processor directives:</p> <pre><code>public string MyProperty { get { return _myProperty; } set { if (value != _myProperty) { _myProperty = value; NotifyPropertyChanged("MyProperty"); // This line above could be improved by replacing the literal string with // a pre-processor directive like "#Property", which could be translated // to the string value "MyProperty" This new notify call would be as follows: // NotifyPropertyChanged(#Property); } } } </code></pre> <p>Would it be a good idea to write a pre-processor to handle extremely simple cases like this? Steve McConnell wrote in <a href="http://rads.stackoverflow.com/amzn/click/0735619670" rel="nofollow noreferrer">Code Complete</a> (p208):</p> <blockquote> <p><em>Write your own preprocessor</em> If a language doesn't include a preprocessor, it's fairly easy to write one...</p> </blockquote> <p>I am torn. It was a design decision to leave such a flexible pre-processor out of C#. However, an author I highly respect mentions it may be ok in some circumstances.</p> <p><strong>Should I build a C# pre-processor? Is there one available that does the simple things I want to do?</strong></p>
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    1. CODid you find a good solution for this? Repeating "IsDirty" flags and accessors all over the place sucks.
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    2. COI didn't find a perfect solution, but we had great success with IL Weaving via [NotifyPropertyWeaver](https://github.com/SimonCropp/NotifyPropertyWeaver).
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    3. COFor what it's worth, I've written a C# preprocessor that I use for various purposes. I recently answered another question here at SO by posting a simple "proof-of-concept" C# preprocessor: http://stackoverflow.com/a/18158212/253938
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