Concepts Of Programming Languages
12th Edition
ISBN: 9780134997186
Author: Sebesta, Robert W.
Publisher: Pearson,
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Chapter 4, Problem 4PS
Explanation of Solution
Extended Backus-Naur Form (EBNF):
BNF is a natural notation for describing syntax described by John Backus and Peter Naur. By extending it, we had EBNF which only enhances the readability and writability of BNF.
The recursive descent parser works on the following EBNF for the arithmetic expressions:
{(+|-)}
{(*|/)}
id|int_constant|()
We know that, the following tokens are returned by the lexical analyzer for the lexemes:
| Token | Lexeme |
| 11 | Identifier |
| 21 | + Operator |
| 23 | * Operator |
| 25 | ( |
| 26 | ) |
In the table the left column having the heading token refers to the token codes to the different types of the categories like:-
a) 11 = identifier
b) 21 =ADD operator
c) 23 = MULTIPLY operator
d) 25 = left brace lexeme
The example given in the problem is
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You are working as a Devops Administrator.
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ou’ve been
t
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d
evopsedu/emp
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This Node
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image
is available
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ockerHub with the following name:
m
ongo
You are required to deploy this application on Kubernetes:
•
NodeJS is available on port 8888 in the container
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t
27017 for mongo database connection
•
MongoDB will be accepting connections on
port 27017
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I
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NodeJS application and verify by
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Hint:
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Chapter 4 Solutions
Concepts Of Programming Languages
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - What was Knuths insight in developing the LR...Ch. 4 - Prob. 25RQCh. 4 - Prob. 26RQCh. 4 - Is left recursion a problem for LR parsers?Ch. 4 - Prob. 1PSCh. 4 - Prob. 2PSCh. 4 - Prob. 3PSCh. 4 - Prob. 4PSCh. 4 - Prob. 7PSCh. 4 - Prob. 8PS
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