Language Processors
The macro processor must perform

expand macro calls and substitute arguments
All of these
recognize macro definitions and macro calls
save the macro definitions

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Language Processors
The function(s) of the Syntax phase is/ are:

to parse the source program into the basic elements or tokens of the language
to build a uniform symbol table
to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs
to build a literal table and an identifier table

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