Language Processors
The macro processor must perform

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

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Language Processors
Assembly code data base is associated with

assembly language version of the program which is created by the code generation phase and is input to the assembly phase
a permanent table which lists all key words and special symbols of the language in symbolic form
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
consists of a full or partial list or the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

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