'Exp exp' diaporamas de présentation

Programming Languages and Compilers (CS 421)

Programming Languages and Compilers (CS 421). Elsa L Gunter 2112 SC, UIUC http://courses.engr.illinois.edu/cs421. Based in part on slides by Mattox Beckman, as updated by Vikram Adve and Gul Agha. Disambiguating a Grammar. <exp>::= 0|1| b<exp> | <exp>a | <exp>m<exp>

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Semantic Analysis

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Banana Algebra:

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Syntax With Binders

Syntax With Binders. COS 441 Princeton University Fall 2004. Quick Review About Binding. Difference between bound and free variables ? x . ( x + y ) ? -equivalence ?x. x = ? ?y. y Capture avoiding substitution (( ? x.(x + y)) x) ! (( ? z. (z + y)) x) ! ? z. (x + y).

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Semantic Analysis

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CS220 Programming Principles

CS220 Programming Principles. ?????? ?? 2002 ???? Class 15: Meta-Circular Evaluator ? ??. Metacircular Evaluator. Implementing Lisp Interpreter : implemented language - Lisp Evaluator itself is a program Implementing language - Lisp

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Automatic compilation

Automatic compilation. Student name: Eldad Uzman Student ID : 036544062 Lecturer : DR Itzhak Aviv. Introduction to compilation. A compiler is a program that translates one programming language to another. Its input is the source language; its output is the target language.

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Type Checking, Inference, & Elaboration

Type Checking, Inference, & Elaboration. CS153: Compilers Greg Morrisett. Statics. After parsing, we have an AST. Critical issue: not all operations are defined on all values. e.g., (3 / 0), sub("foo",5), 42(x) Options don't worry about it (C, C++, etc.)

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????????

????????. ?????? ?????? ?????????????? ????????? ??????? / 2003-2004 ????????? compiler ??? ??? ?????? Minijava. ????????? ???? compiler. ??????? ???????. ?????????? ???????. ????????????? ???????. ???????? ??????. Sablecc 3.0b2.

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Context-Free Languages

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Lab 3: Using ML-Yacc

Lab 3: Using ML-Yacc. Zhong Zhuang dyzz@mail.ustc.edu.cn. How to write a parser?. Write a parser by hand Use a parser generator May not be as efficient as hand-written parser General and robust How it works?. stream of tokens. Parser Specification. Parser. parser generator.

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Abstract Syntax

Abstract Syntax. Mooly Sagiv html://www.cs.tau.ac.il/~msagiv/courses/wcc04.html. Outline. The general idea Bison Motivating example Interpreter for arithmetic expressions The need for abstract syntax Abstract syntax for arithmetic expressions.

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CH. 2 - MEASUREMENT

CH. 2 - MEASUREMENT. I. Using Measurements (p. 44 - 57). A. Accuracy vs. Precision. Accuracy - how close a measurement is to the accepted value Precision - how close a series of measurements are to each other. ACCURATE = CORRECT PRECISE = CONSISTENT. your value. accepted value.

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Buttom-up parsning: Hvor er vi

Leksikalsk- analyse. Syntax- analyse. Semantik- analyse. Mellemk.- optimering. Kode- generering. Kode- optimering. Buttom-up parsning: Hvor er vi. If-token Ident-token. IdentX(type=Int). if viggo == 3 then. Gen(Comp, *Viggo,3) Gen(jump if not, adress).

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CS603 Programming Language Organization

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MEASUREMENT

MEASUREMENT. -Accuracy & Precision - Significant Digits -Scientific Notation. A. Accuracy vs. Precision. Accuracy - how close a measurement is to the accepted value Precision - how close a series of measurements are to each other. ACCURATE = CORRECT PRECISE = CONSISTENT.

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Inductively Defined Data Concrete and Abstract syntax

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CAS810: WEEK 7

CAS810: WEEK 7. LECTURE: DENOTIONAL SEMANTICS OF A SIMPLE LANGUAGE WITH ENVIRONMENTS : INTERPRETATION IN HASKELL PRACTICAL AND DURING THE WEEK: Do practical exercises to be given out. HASKELL IMPLEMENTATION OF LAST WEEKS LANGUAGE.

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Inductively Defined Data Concrete and Abstract syntax

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CS603 Programming Language Organization

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