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

How does tcp achieve reliability, How does TCP achieve reliability? One...

How does TCP achieve reliability? One of the most significant technologies is retransmission. While TCP stands data the sender compensates for packet loss through implementing

What is called when network address prefixed by 1110, Network address prefi...

Network address prefixed by 1110 is a? Network address prefixed through 1110 is a multicast address.

What are the features of client/server computing, What are the features of ...

What are the features of Client/Server Computing? Although there are several different configurations, different hardware and software platforms and even dissimilar network pro

Define congestion, Define Congestion. Congestion: This is uneconomic ...

Define Congestion. Congestion: This is uneconomic to give sufficient equipment to carry all the traffic which could possibly be offered to a telecommunication system. Inside

Implementation and testing, In this stage of the project you are required t...

In this stage of the project you are required to create a Design document, the Design document must contain the following:  Structure chart Pseudo-code Data Dictionary

Is it possible to decrease clock skew to zero, Is it possible to decrease c...

Is it possible to decrease clock skew to zero? Describe your answer? Even if there are clock layout strategies (H-tree) which can into theory reduce clock skew to zero by havi

Program level-parallelism based on granularity size, Program Level : It ...

Program Level : It is the next level consisting of independent programs for parallelism. Coarse Granularity  size is used at this level containing ten thousands of instructions.

Differentiate between http and ftp, Differentiate between http and ftp. ...

Differentiate between http and ftp. HTTP and FTP were developed to make Internet transmission better. FTP is utilized to exchange files among computer accounts, to transfer

Advantages and disadvantages of public key cryptography, What are the advan...

What are the advantages and disadvantages of public key cryptography? Advantages and Disadvantages: Improved security and convenience: private keys never require be trans

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