Concepts Of Programming Languages
12th Edition
ISBN: 9780134997186
Author: Sebesta, Robert W.
Publisher: Pearson,
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Chapter 4, Problem 14RQ
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Recursive-descent parsing subprogram is written for a rule with a single RHS:
A recursive descent parser contains a set of recursive subprograms which produces a parse tree. Syntax of nested structures in a language (certain control structures, parenthesis) are described with the help of recursive grammar rules.
- Each subprogram is written for each corresponding to a non- terminal in the grammar.
- The subprogram corresponding to a particular non terminal scans the input string and builds a parse tree with root as that non terminal and leaves matching the input string.
- Each subprogram should act as a parser for the set of strings which are generated by its corresponding non terminal...
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State and explain the convention followed for writing a recursivedescent parsing subprogram.
How do functional languages typically control repetition?
Group of answer choices
recursion
implication
denotation
iteration
Any TM for a Recursive language will always accept or reject.
True
False
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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- True or False, please have some explanation 3. Grammar with the right recursion can not be converted to grammar for the same language that has only left recursion.arrow_forwardEliminate left recursion in the following grammar.arrow_forwardUsing the syntax of C, write a recursive-descent subprogram named initializer that corresponds to the following rules (taken from the C99 standard): initializer: assignment-expression { initializer-list } { initializer-list,} Note that { and } are terminals, not metasymbols. Assume that recursive-descent subprograms named assignment-expression and initializer-list already exist.arrow_forward
- Describe the notion of tail recursion and what distinguishes it from standard recurion. Detail an example of the benefits of recursion by writing a tail recursive, and standard recursive definition of a function in Scheme and comparing how their corresponding invocations are evaluated.arrow_forwardWhat is parametric polymorphism in a subprogram Include a deltaied example and how this example works.arrow_forwardWrite the grammar for right recursive for expression A = B + C + A J and draw its parse tree.arrow_forward
- Discuss the tradeoffs between pointers and the recursive types that arise naturally in a language with a reference model of variables.arrow_forwardIs left recursion a problem for LR parsers?arrow_forwardGive the left recursion rule in CFG .example What is the significance of left recursive rules?arrow_forward
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