'Num lines' presentation slideshows

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; . ;

457 views • 38 slides

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; . ;

460 views • 38 slides

More on flex

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Programming language syntax

Programming language syntax. Three aspects of languages Syntax How are sentences formed? Semantics What does a sentence mean? Pragmatics How to use the language? Only syntax can be described formally Regular expressions and context-free grammars. Regular expressions (RE).

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Introduction to Lex

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Introduction to Lex

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Flex

Flex. Fast LEX analyzer CMPS 450. Lexical analysis terms + A token is a group of characters having collective meaning. + A lexeme is an actual character sequence forming a specific instance of a token, such as num. + A pattern is a rule expressed as a regular expression

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Last Lecture Review

Last Lecture Review. ?. Lexical analyzer generator. State convention graph. Regular expression. Computer realization. Regular expression grammar. Equivalence. Equivalence. Subset construction. Nondeterministic finite automaton. Minimalist deterministic finite automaton.

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CSE870 Homework #5 Design Pattern Case Studies with C++

CSE870 Homework #5 Design Pattern Case Studies with C++. by Rajat Joy Rahul Kalaskar Amal Latif Prakarn Unachak. pg. 108. /** * Options this class contains the cmd line options parse_args method used * to assign value to the function ptr compare */

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