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

Utilization summary, Utilization Summary The Utilization Summary shows ...

Utilization Summary The Utilization Summary shows the status of each processor i.e. how much time (in the form of percentage) have been spent by every processor in busy mode, o

Principles of logic circuits, A logic gate is an electronic circuit that ge...

A logic gate is an electronic circuit that generates a typical output signal which depends on its input signal. Output signal of a gate is a general boolean operation of its input

What is check box, A dialog box, generally square, that records an on or of...

A dialog box, generally square, that records an on or off value.

Programs, A palindrome is a string that reads the same from both the ends. ...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Floating point arithmetic pipelines, Floating point Arithmetic pipelines ...

Floating point Arithmetic pipelines Floating point computations are the finest candidates for pipelining. Take the instance of addition of two floating point numbers. Following

A graph ''g'' with ''n'' nodes is bipartite, A graph 'G' with 'n' nodes is ...

A graph 'G' with 'n' nodes is bipartite if it have  no cycle of odd length.

How do you find out if a linked-list has an end, By 2 pointers you can find...

By 2 pointers you can find it. One of them goes 2 nodes each time. The second one goes at 1 node each time. If there is a cycle, the one that goes 2 nodes every time will eventuall

Evaluation functions, Evaluation Functions: Evaluation functions calcu...

Evaluation Functions: Evaluation functions calculate approximately the score which can be prove of guaranteed if a particular world state is reached. Same like in chess, evalu

Multiple valued logics, Multiple valued logics: Multiple valued logics...

Multiple valued logics: Multiple valued logics, where altered types of truth value such as "unknown" are may be allowed. These have some of the particular advantages of fuzzy

How e-commerce works for the shop owner, E-commerce is working in tandem wi...

E-commerce is working in tandem with the real shop and if all the products are online running the e-commerce shop is becoming simpler. Owner log in on the special admin side of the

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