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

What is use case and use case diagram, What is use case and use case diagra...

What is use case and use case diagram? A use case is a coherent piece of functionality that a system can give by interacting with actors. Use case includes one or more actors a

What are semaphores, What are semaphores? Semaphore : A semaphore is a...

What are semaphores? Semaphore : A semaphore is a synchronization tool which gives a general-purpose solution to controlling access to critical sections. It s an abstract data

What controls the screen flow, What controls the screen flow? The SET ...

What controls the screen flow? The SET SCREEN and LEAVE SCREEN statements controls screen flow.

What is sisd, What is SISD?  Single Instruction stream, Single Data str...

What is SISD?  Single Instruction stream, Single Data stream (SISD) shows the organization of a single computer having a control unit, a processor unit, and a memory unit. Inst

Design a multiplier, how can we design a multiplier by using ASM chart and ...

how can we design a multiplier by using ASM chart and then design the data controller ?!!

Replacement and substitution, Replacement and substitution: However, e...

Replacement and substitution: However, equivalences allow us to change one sentence with another without affecting the meaning, it means we know already that replacing one sid

What is an unsigned integer constant, What is an unsigned integer constant?...

What is an unsigned integer constant? An integer constant is the number in the range of - 32768 to + 32767; because an integer constant always gets two bytes in memory and in t

What are the different sections of a report, What are the different section...

What are the different sections of a report? A report is categorized into many sections: The Report header: In this you place a control which must appear only at the startin

What is binary, Binary is an alternative number system which works very goo...

Binary is an alternative number system which works very good for computers. Humans have ten fingers; that's probably why we use ten digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) in our

What is assembler, Q. What is Assembler? An assembly program is used to...

Q. What is Assembler? An assembly program is used to transfer assembly language mnemonics to binary code for every instruction after the complete program has been written with

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