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Lexical Analysis (2 Lectures)

Lexical Analysis (2 Lectures)

Lexical Analysis (2 Lectures). Overview. Basic Concepts Regular Expressions Language Lexical analysis by hand Regular Languages Tools NFA DFA Scanning tools Lex / Flex / JFlex / ANTLR. Scanning Perspective. Purpose Transform a stream of symbols Into a stream of tokens.

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1.24k views • 61 slides
Lexical Analysis

Lexical Analysis

Lexical Analysis. Textbook:Modern Compiler Design Chapter 2.1 http://www.cs.tau.ac.il/~msagiv/courses/wcc11-12.html. A motivating example. Create a program that counts the number of lines in a given input text file. Solution (Flex). int num_lines = 0; %% ++num_lines; . ;

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448 views • 38 slides
Lexical Analysis

Lexical Analysis

Lexical Analysis. Textbook:Modern Compiler Design Chapter 2.1 http://www.cs.tau.ac.il/~msagiv/courses/wcc11-12.html. A motivating example. Create a program that counts the number of lines in a given input text file. Solution (Flex). int num_lines = 0; %% ++num_lines; . ;

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445 views • 38 slides
NFA to DFA Construction

NFA to DFA Construction

NFA to DFA Construction. 1. 0. 0. 3. 0. 0. 0. 1. 0. 1. 2. 0. 1. 1. NFA. DFA. 0. NFA to DFA Construction. 1. 0. 0. 3. 0. 0. 0. 1. 0. 1. 2. 0. 1. 1. NFA. DFA. 0. 0. NFA to DFA Construction. 13. 1. 0. 0. 3. 0. 0. 0. 1. 0. 1. 2. 0. 1. 1. NFA. DFA.

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412 views • 23 slides
DFA Construccion para KMP

DFA Construccion para KMP

DFA Construccion para KMP. Reference: Chapter 19, Algorithms in C, 2 nd Edition, Robert Sedgewick. DFA Construction for KMP. Search Pattern. j. pattern[1..j]. X. next. a. a. b. a. a. a. b. b. a. b. 0. DFA Construction for KMP. Search Pattern. j. pattern[1..j]. X. next. a.

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258 views • 11 slides
DFA Construction for KMP

DFA Construction for KMP

DFA Construction for KMP. Search Pattern. j. pattern[1..j]. X. next. a. a. b. a. a. a. b. b. a. b. 0. DFA Construction for KMP. Search Pattern. j. pattern[1..j]. X. next. a. a. b. a. a. a. b. b. 0. 0. 0. 0. a. 1. b. 0. b. a. 0. 1. DFA Construction for KMP.

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162 views • 9 slides

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