'Expr expr' presentation slideshows

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CMP 339/692 Programming Languages Day 4 Thursday, February 9, 2011

CMP 339/692 Programming Languages Day 4 Thursday, February 9, 2011. Rhys Eric Rosholt. Office: Office Phone: Web Site: Email Address:. Gillet Hall - Room 304 718-960-8663 http://comet.lehman.cuny.edu/rosholt/ rhys.rosholt @ lehman.cuny.edu. Getting Racket.

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Transformation and Analysis of Haskell Source Code

Transformation and Analysis of Haskell Source Code. ?. ?. Neil Mitchell www.cs.york.ac.uk/~ndm. Why Haskell?. Functional programming language Short, beautiful programs Referential transparency Easier to reason about and manipulate Lazy Beta-reduction holds Can inline easily. ?. Goals.

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CMPE 152: Compiler Design October 17 Class Meeting

CMPE 152: Compiler Design October 17 Class Meeting. Department of Computer Engineering San Jose State University Fall 2019 Instructor: Ron Mak www.cs.sjsu.edu/~mak. Backus Naur Form (BNF). A text-based way to describe source language syntax. Named after John Backus and Peter Naur .

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COP 3402 Systems Software

COP 3402 Systems Software. Euripides Montagne University of Central Florida. COP 3402 Systems Software. Syntax analysis (Parser). Outline. Parsing Context Free Grammars Ambiguous Grammars Unambiguous Grammars. Parsing. In a regular language nested structures can not be expressed.

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Parsing VI The LR(1) Table Construction

N.B.: This lecture uses a left-recursive version of the SheepNoise grammar. The book uses a right-recursive version. The derivations (& the tables) are different. Parsing VI The LR(1) Table Construction. Copyright 2003, Keith D. Cooper, Ken Kennedy & Linda Torczon, all rights reserved.

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Recursive Data Structures and Grammars

Recursive Data Structures and Grammars. Themes Recursive Description of Data Structures Grammars and Parsing Recursive Definitions of Properties of Data Structures Recursive Algorithms for Manipulating and Traversing Data Structures Examples Lists Trees Expressions and Expression Trees.

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COP 3402 Systems Software

COP 3402 Systems Software. Euripides Montagne University of Central Florida. COP 3402 Systems Software. Syntax analysis (Parser). Outline. Parsing Context Free Grammars Ambiguous Grammars Unambiguous Grammars. Parsing. In a regular language nested structures can not be expressed.

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Describing Syntax and Semantics Chapter 3

Describing Syntax and Semantics Chapter 3. Describing Syntax and Semantics. SYNTAX - the form of the expressions, statements and program units in a programming language. SEMANTICS - the meaning of those expressions, statements and program units. Describing Syntax.

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Outline Notes (not in presentation)

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CUP

CUP. Lecture 11 Fri, Feb 20, 2004. The CUP Parser Generator. CUP creates Java source code for an LR parser that uses the LALR algorithm. LALR = L ook- A head LR . LALR is similar to LR(1), whose tables are much larger than the LR(0) tables.

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Outline Notes (not in presentation)

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YACC

YACC. Introduction. What is YACC ? a tool for automatically generating a parser given a grammar written in a yacc specification (.y file)

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Lecture 7

Lecture 7. CUP: An LALR Parser Generator for Java. 1. Introduction and Example. CUP: a system for generating LALR parsers from simple specifications. like yacc, but written in Java, uses specifications including embedded Java code, and produces parsers which are implemented in Java.

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Lecture # 7

Lecture # 7. Chapter 4: Syntax Analysis. What is the job of Syntax Analysis?. Syntax Analysis is also called Parsing or Hierarchical Analysis. A Parser implements grammar of the language may it be C, C++ etc

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SymPy A Symbolic Mathematics package in and for Python

SymPy A Symbolic Mathematics package in and for Python. Getting Started. x,y = symbols('x y') a = 2*x ? y a + y expand(a**3) factor(x**3+3*x**2+3*x+1) simplify(x**2-y**2-(x+y)*(x-y)). Substitution. expr = cos(x) + 1 expr.subs(x,y) expr.subs(x,0) expr = x**y expr = expr.subs(y,x**y)

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OCAML

OCAML. nucleo funzionale puro funzioni (ricorsive) tipi e pattern matching trascriviamo pezzi della semantica operazionale primitive utili: liste componente imperativo variabili e assegnamento primitive utili: arrays moduli e oggetti. Espressioni pure.

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Chapter 7

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