Explain difference between scanning and parsing, Computer Engineering

Assignment Help:

Explain difference between Scanning and parsing.

Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.


Related Discussions:- Explain difference between scanning and parsing

What is instruction cycle, What is Instruction Cycle The simplest model...

What is Instruction Cycle The simplest model of instruction processing can be of two steps. The CPU reads /fetches instructions (codes) from memory one at a time and executes i

What are modes of operation of centralized spc, What are modes of operation...

What are modes of operation of centralized SPC? In about all the present day electronic switching systems utilizing centralized control, only a two-processor configuration is

Illustrate about the three state table buffers, Three state table buffers ...

Three state table buffers Three state table buffers: A bus system can be constructed with the help of three state gates instead of multiplexers. A three states gate is digital

Digital systems and microprocessors, Your logic function for this assignmen...

Your logic function for this assignment is to be derived from your own student number. The number 1224583 will be used as an example as to how you should derive your function and e

Describe clusters in cellular systems, Question: a) With the help of a...

Question: a) With the help of a diagram, describe clusters in cellular systems. b) Describe the role of the following components in the GSM architecture Radio Sub-Sy

Explain the process of skolemization., Problem 1. Explain briefly the p...

Problem 1. Explain briefly the process of matching production rules against working memory 2. What are the different kinds of knowledge that need to be represented in AI? Ex

How does the computer execute a program, Let's attempt to answer a fundamen...

Let's attempt to answer a fundamental question: 'How does the Computer execute a Program?' Let's describe this with the help of an example from higher level language domain. Pr

What is program annotation packages, Q. What is Program Annotation Packages...

Q. What is Program Annotation Packages? A quite renowned scheme in this field is OpenMP a newly designed industry standard for shared memory programming on architectures with u

What is database integration, What is database integration? Database in...

What is database integration? Database integration is the ability to give user-friendly and cost-effective software solutions for data infrastructure management by the interfac

What is the significance of nonactionattribute, In general, all public proc...

In general, all public processes of a controller class are treated as action processes. If you require prevent this default behaviour, just decorate the public process with NonActi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd