Page 102 - DCAP507_SYSTEM_SOFTWARE

System Software

Notes 7.1.4 Macro Processor Algorithm and Data Structures

 It is simple to design a two-pass macro processor in which all macro definitions are
accessed throughout the first pass, and all macro invocation statements are extended
during second pass.
 Such a two pass macro processor would not permit the body of one macroinstruction to
enclose definitions of other macros.

Example:

Example:

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