Preprocessor Macro Problem

i have macro this:

code:

#define intmethods(lower, cap, parameter) \  - (mmexpressiontype)symboliccapwithint:(sint64)parameter\  {\  	return [(mmexpressiontype)self symboliccap:[[mmterm alloc] initwithinteger:parameter]];\  }\  \  - (mmexpressiontype)lowerwithint:(sint64)parameter\  {\  	return [(mmexpressiontype)self lower:[[mmterm alloc] initwithinteger:parameter]];\  }

it supposed replace repetitive set of implementations, hope understand trying do. code here gets errors, seems think i'm literally using symboliccap etc. instead of using macro parameter.
here desired output input if don't understand.

code:

intmethods(add, add, addend)

should equivalent to

code:

- (mmexpressiontype)symbolicaddwithint:(sint64)exponent  {  	return [(mmexpressiontype)self symbolicadd:[[mmterm alloc] initwithinteger:addend]];  }    - (mmexpressiontype)addwithint:(sint64)exponent  {  	return [(mmexpressiontype)self add:[[mmterm alloc] initwithinteger:addend]];  }

help appreciated.

 

http://gcc.gnu.org/onlinedocs/cpp/concatenation.html

google search terms: c preprocessor token pasting

far complex feature of preprocessor, , has quirks. recommend reading more 1 reference, , looking @ more 1 example.

 

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