What is a possible reason why the Lexer and the parser are two different entities? Group of answer choices The lexer does not need to deal with external environment necessities, like identifying tokens Parsers cannot do all the work that lexers do CFGs are easier to understand using lexers than parser based Regular expressions Regular Expression based lexers are easier to automate than CFG parsers
What is a possible reason why the Lexer and the parser are two different entities? Group of answer choices The lexer does not need to deal with external environment necessities, like identifying tokens Parsers cannot do all the work that lexers do CFGs are easier to understand using lexers than parser based Regular expressions Regular Expression based lexers are easier to automate than CFG parsers
Programming Logic & Design Comprehensive
9th Edition
ISBN:9781337669405
Author:FARRELL
Publisher:FARRELL
Chapter2: Elements Of High-quality Programs
Section: Chapter Questions
Problem 9RQ
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What is a possible reason why the Lexer and the parser are two different entities?
Group of answer choices
The lexer does not need to deal with external environment necessities, like identifying tokens
Parsers cannot do all the work that lexers do
CFGs are easier to understand using lexers than parser based Regular expressions
Regular Expression based lexers are easier to automate than CFG parsers
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