Explain parsing techniques, Computer Engineering

Assignment Help:

Explain any three parsing techniques.

Following are three parsing techniques:

Top-down parsing: This parsing can be viewed as an attempt to get left-most derivations of an input-stream through searching for parse trees by using a top-down expansion of the specified formal grammar rules. Tokens are used from left to right. Inclusive option is used to accommodate ambiguity through expanding all alternative right- hand-sides of grammar rules.

Bottom-up parsing: A parser can begin with the input and attempt to rewrite this to the start symbol. Instinctively, the parser attempts to place the most fundamental elements, then the elements having these, and so on. LR parsers are illustrations of bottom-up parsers. The other term used for this type parser is Shift-Reduce parsing.

Recursive descent parsing: This is a top down parsing without backtracking. This parsing technique utilizes a set of recursive processes to perform parsing. Salient features of recursive descent parsing are its generality and simplicity. This can be implemented in any language supporting recursive procedures.


Related Discussions:- Explain parsing techniques

Functions for message passing, Functions for Message Passing: MPI proc...

Functions for Message Passing: MPI processes don't share memory space and one process can't directly access other process's variables. Therefore they need some form of communi

What are addressing modes, What are Addressing Modes Many of instructio...

What are Addressing Modes Many of instructions that a computer actually executes during running of a program concern movement of data to and from memory. It is not possible sim

Quick sort , Write Quick sort non recursive program

Write Quick sort non recursive program

Determine the object oriented features, Object Oriented Analysis  T h...

Object Oriented Analysis  T he basics of object oriented analysis with the help of object oriented features. Analysis  Analysis is not a solution of the problem. We w

Flynns categorization, Normal 0 false false false EN-US...

Normal 0 false false false EN-US X-NONE X-NONE

Final project, I need help coming with an idea for BSCE final project, whic...

I need help coming with an idea for BSCE final project, which is solvable in about a semester

Minimis logic function using K-map, Minimise the logic function F (A, B, C,...

Minimise the logic function F (A, B, C, D) = Π M (1, 2, 3, 8, 9, 10, 11,14) ⋅ d (7, 15) Use Karnaugh map.   Ans. Given function F=∏M(1,2,3,8,9,10,11,14).d(7, 15) F'=B'D+B'C+AC+AB'

How and what data is collected - weather simulation, How and what data is c...

How and what data is collected - Weather simulation -  Sensors measure pressure, relative humidity, temperature and wind speed and wind direction -  Sensors are placed in w

C++, pebble merchant

pebble merchant

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