Language Processors
In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with

creation of more optional matrix
use of macro processor to produce more optimal assembly code
recognition of basic syntactic constructs through reductions
recognition of basic elements and creation of uniform symbols

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Language Processors
The advantage(s) of incorporating the macro processor into pass 1 is/ are:

All of these
many functions do not have to be implemented twice
more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros
Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler

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Language Processors
A non-relocatable program is one which

cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation
All of these
consists of a program and relevant information for its relocation
can itself perform the relocation of its address-sensitive portions

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Language Processors
Assembly code data base is associated with

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
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
a permanent table which lists all key words and special symbols of the language in symbolic form
assembly language version of the program which is created by the code generation phase and is input to the assembly phase

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