#DEFINE

Syntax:

    #DEFINE SYMBOL body

Explanation:

#DEFINE allows to declare text-based preprocessor symbols.  

Once the compiler has seen a #DEFINE, it will start replacing further occurrences of symbol with body.    Body may be empty.   The expansion is done recursively, until there is nothing more to expand and the compiler can continue analyzing the resulting code.

#UNDEFINE can be used to make the compiler forget about a #DEFINE.



The compiler replaces a SYMBOL with the value, it then searches the line for constants again and will make any more replacements needed.   It will do this up to 100 times on a line, then it will stop replacing and show an error.   The limitation of 100 iteractions is to prevent something like "#DEFINE Const_A Const_B" and then "#DEFINE Const_B Const_A" from causing an infinite loop in the compiler.



See Also DEFINEs

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