Parse d source file by using compiler

[tcak via Digitalmars-d-learn]

I checked for a flag in this page http://dlang.org/dmd-linux.html 
, but couldn't have found any for this purpose.

Is there a way to parse a d source file so it generates a tree in 
JSON, XML, or something-that-can-be-processed-easily file format?

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My real purpose:

I need to generate hash code (e.g. MD5) for a part of source code 
(let's say a class, struct, or a function). So whether the codes 
are changed or not can be detected. As you will guess, comments, 
text formatting etc. shouldn't affect the hash result.


Use-Case:

I am writing a code generator/back up system. It will check the 
last available code file. If important changes are done in a 
specific part of code, it will increase version number by 1.