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

Relationship between distributed and mobile computing, a) Briefly describe...

a) Briefly describe the relationship between distributed computing, mobile computing and pervasive computing. b) Suppose the following scenario, which demonstrate the possibili

Instruction pipeline, example of branching take place in instructon pipelin...

example of branching take place in instructon pipeline

How can we access the correction and transport system, How can we access th...

How can we access the correction and transport system? Each time you make a new object or change an existing object in the ABAP/4 Dictionary, you branch automatically to the W

E-commerce in the market, Considering the fact that a lot of research has b...

Considering the fact that a lot of research has been done concerning e-commerce, what has been brought in this work is that there has been a lot of facts, studies, and experiments.

Hazard, how to calculate delay for hazard?

how to calculate delay for hazard?

What is a binary tree, What is a binary tree? A binary tree 'T' is desc...

What is a binary tree? A binary tree 'T' is described as A finite set of elements, known as nodes, such that: either (i) or (ii) happens: (i) T is empty (known as the 'nu

Speed of memory versus speed of CPU, In the past there was a large gap betw...

In the past there was a large gap between speed of a memory andprocessor. So a subroutine execution for an instruction for illustration floating point addition may have to follow a

Three firm capabilities that are performance in e-commerce, Three firm capa...

Three firm capabilities that are critical for superior firm performance in e-commerce are:- 1.  Information technology capability,  2.  Strategic flexibility, and  3.  Tr

What is a subroutine, What is a subroutine? A subroutine is a named, in...

What is a subroutine? A subroutine is a named, independent section of C code that performs a particular task and optionally returns a value to the calling program.

State any three properties of the neutrons, Q. State any three properties o...

Q. State any three properties of the neutrons. (i) A Neutrons are the constituent particles of all nuclei except hydrogen. (ii) As they are neutral particles they aren't de

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