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薛智文 cwhsueh@csie.ntu.tw csie.ntu.tw/~cwhsueh/ 97 Spring

薛智文 cwhsueh@csie.ntu.tw csie.ntu.tw/~cwhsueh/ 97 Spring

Lexical Analysis — Scanner (textbook ch#3.1–3.4, 3.6, 3.7, 3.5, 3.8). 薛智文 cwhsueh@csie.ntu.edu.tw http://www.csie.ntu.edu.tw/~cwhsueh/ 97 Spring. Lexical Analyzer vs. Parser. source program. semantic analysis. Lexical Analyzer. token. Parser. getNextToken. Symbol Table.

By butch
(404 views)

AWK: The Duct Tape of Computer Science Research

AWK: The Duct Tape of Computer Science Research

AWK: The Duct Tape of Computer Science Research. Tim Sherwood UC Santa Barbara. Duct Tape. Systems Research Environment Lots of simulators, data, and analysis tools Since it is research, nothing works together Unix pipes are the ducts Awk is the duct tape

By channery
(178 views)

CSc 337

CSc 337

CSc 337. Lecture 25: Regular Expressions. What is form validation ?. validation : ensuring that form's values are correct some types of validation: preventing blank values (email address) ensuring the type of values

By cato
(169 views)

>>>>>>>>>>>>>>>>>>>>>> softwaretestinggenius <<

>>>>>>>>>>>>>>>>>>>>>> softwaretestinggenius <<

A Quick Revision of HP QTP 10.0 An Advanced Solution to Functional & Regression Test Automation Part - 2. >>>>>>>>>>>>>>>>>>>>>> www.softwaretestinggenius.com <<<<<<<<<<<<<<<<<<<<<<. Recovery Scenarios Keyword Driven Testing Framework Script Debugging Database Management by SQL Queries

By luciano
(148 views)

Chunk Parsing

Chunk Parsing

Chunk Parsing . CS1573: AI Application Development, Spring 2003 (modified from Steven Bird’s notes). Light Parsing . Difficulties with full parsing Motivations for Parsing Light (or “partial”) parsing Chunk parsing (a type of light parsing) Introduction Advantages Implementations

By eugenia
(397 views)

Chomsky Hierarchy Language Operations and Properties

Chomsky Hierarchy Language Operations and Properties

Chomsky Hierarchy Language Operations and Properties. You don’t have to know this line. The Chomsky Hierarchy. The Chomsky Hierarchy. Recursively Enumerable Languages. {<M>, H(<M>)}. Recursive Languages. {a n b n c n , n ≥ 0}. Context Free Languages. {a n b n , n ≥ 0}.

By vin
(313 views)

Review: Compiler Phases:

Review: Compiler Phases:

Review: Compiler Phases:. Source program. Front End. Lexical analyzer. Syntax analyzer. Symbol table manager. Error handler. Semantic analyzer. Intermediate code generator. Code optimizer. Backend. Code generator. Chapter 3: Lexical Analysis.

By elina
(266 views)

Lecture 1 String and Language

Lecture 1 String and Language

Lecture 1 String and Language. String. string is a finite sequence of symbols. For example, string ( s, t, r, i, n, g) CS4384 ( C, S, 4, 3, 8) 101001 (1, 0) Symbols are given through alphabet. An alphabet is a finite set of symbols.

By orpah
(131 views)

03-60-214 Lexical analysis

03-60-214 Lexical analysis

S. a, b. B. a. 03-60-214 Lexical analysis. Jianguo Lu University of Windsor. lexical analyzer. symbol table. parser. Lexical analysis in perspective. LEXICAL ANALYZER: Transforms character stream to token stream Also called scanner, lexer , linear analyzer. LEXICAL ANALYZER

By adamma
(345 views)

Deep Packet Inspection: Where are We? CCW’08

Deep Packet Inspection: Where are We? CCW’08

Deep Packet Inspection: Where are We? CCW’08. Michela Becchi. Assumption. The packet payload is not encrypted and can therefore be inspected. Background: Rule-set complexity. Practical rule-sets: Snort, as of November 2007 8536 rules, 5549 Perl Compatible Regular Expressions

By inge
(232 views)

Regular Expressions and DFAs

Regular Expressions and DFAs

Regular Expressions and DFAs. COP 3402 (Summer 2010). Regular Expression. Notation to specify a set of strings. Examples. Exercise 1. Let ∑ be a finite set of symbols ∑ = {10, 11}, ∑* = ?. Answer. Answer: ∑* = {є, 10, 11, 1010, 1011, 1110, 1111, …}. Exercises 2.

By layne
(172 views)

Internet Librarian International 2008

Internet Librarian International 2008

Internet Librarian International 2008. Maintaining Search Quality or How to Beat the Search Engine Crunch Karen Blakeman RBA Information Services . Photo by Florian Knust http://www.flickr.com/photos/florianknust/471111469/.

By fairfax
(81 views)

Command-line arguments

Command-line arguments

Command-line arguments. python myprogram.py 10 100 output.txt sys.argv: [ “myprogram.py”, 10, 100, “output.txt” ] First item in sys.argv list: program name, next items are command-line arguments. Long headers in Fasta file. >AC121234 Medicago truncatula clone mth2-19o7, WO

By sanam
(96 views)

Chomsky Hierarchy Language Operations and Properties

Chomsky Hierarchy Language Operations and Properties

Chomsky Hierarchy Language Operations and Properties. The Chomsky Hierarchy. You don’t have to know this. The Chomsky Hierarchy. Partially Computable Languages. {M, H(<M>)}. Computable Languages. {a n b n c n , n ≥ 0}. Context Free Languages. {a n b n , n ≥ 0}. Regular Languages.

By tavon
(145 views)

CS 211 Regular Expressions

CS 211 Regular Expressions

CS 211 Regular Expressions. Today’s Lecture. Review Chapter 4 Go over exercises. Processing Input. If we know how to read in a line of input, what else might we want to do with it? Analyze it in some way, based on some pattern Extract certain values out of it, based on some pattern

By Olivia
(245 views)

Regular Expressions Theory and Practice

Regular Expressions Theory and Practice

Regular Expressions Theory and Practice. Jeff Schoolcraft MDCFUG 12/13/2005. Who am I?. Jeff Schoolcraft Senior Architect / Operations Manager at RGII Technologies. Speaker at Usergroups President WinProTeam Vienna Usergroup (.NET) TDD Evangelist Tool guy. What can you expect?.

By morey
(112 views)

Regular Expressions and Non-regular Languages

Regular Expressions and Non-regular Languages

Regular Expressions and Non-regular Languages. http://cis.k.hosei.ac.jp/~yukita/. Expressions and their values. Definition 1.26. The values of atomic expressions. Example 1.27. Units for the binary operations. Theorem 1.28.

By argus
(135 views)

Solution Exercise 1.43

Solution Exercise 1.43

e. e. e. a. e. r’. r. s’. q’. q. b. b. b. A’. Solution Exercise 1.43. a. A. Input : Automaton A accepting L Output : Automaton AD accepting DROP-OUT(L) Process : 1) Let A’ be a duplicate of A

By talulah
(163 views)

3.2 Pumping Lemma for Regular Languages

3.2 Pumping Lemma for Regular Languages

3.2 Pumping Lemma for Regular Languages .

By chapa
(410 views)

Pertemuan 3 - 6 Lexical Analysis (Scanning)

Pertemuan 3 - 6 Lexical Analysis (Scanning)

Matakuliah : T0174 / Teknik Kompilasi Tahun : 2005 Versi : 1/6. Pertemuan 3 - 6 Lexical Analysis (Scanning). Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Mahasiswa dapat memberikan definisi lexical analysis (Scaner) dan peranannya dalam compiler (C1)

By mallorie
(204 views)

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