When used with different implicit invocation approaches, the advantages and disadvantages of each technique must be analyzed and compared to determine the best one for each particular situation. Note that the resulting class must be inserted into the global namespace, otherwise. This approach has been implemented in other languages by incorporating an interpreter in the program, which works directly with. This makes scheme the ideal language almost for creating programs that are transformed no massive parsing is needed to parse the program, and scheme itself is a listprocessing language. Essentially, metaprogramming is an operation in which a central control system controls hundreds of thousands of programs operating in parallel simultaneously. The scheme community is a notable exception, as we discuss in section 10. See how to build a code generator and get a closer look at languagesensitive macro programming in scheme. Authoring of web pages, xml documents and pdf papers. Starting off the list for examples of metaprogramming is monkey patching. The bedrock structured programming system combining generative metaprogramming and hoare logic in an extensible program veri. Programming and metaprogramming in scheme springerlink. Metaprogramming cs251 programming languages spring 2017, lyn turbak department of computer science wellesley college these slides borrow heavily from ben woods fall 15 slides. Metaprogramming in commonlisp is about the metaobjectprotocol.
Copyright c 20, decorators with args 47 from functools import wraps def debugprefix. If youre looking for a free download links of programming and metaprogramming in scheme undergraduate texts in computer science pdf, epub, docx and torrent then this site is not for you. Download programming and metaprogramming in scheme. This is a teaching material about functional programming in scheme.
Lisp and scheme we use the programming language scheme in this material. Metaprogramming is a programming technique in which computer programs have the ability to treat other programs as their data. I not really metaprogramming no code manipulation happening i example of a runtime object model. If youre looking for a free download links of programming and meta programming in scheme undergraduate texts in computer science pdf, epub, docx and torrent then this site is not for you. Monkey patching is an object oriented programming technique that allows developers to. Subsequent chapters describe special forms, numerous data abstractions. Metaprogramming is the writing of computer programs that write or manipulate other programs or themselves as their data, or that do part of the work at compile time that would otherwise be done at runtime. In section 4, we present two implementations of the speci. The r7rs small language specification pdf was approved in may 20 and endorsed by the scheme language steering committee later that year. In smalltalk, it is about hacking doesnotunderstand.
Therefore it is natural to start with a brief discussion of the family of languages, to which scheme belongs. Metaml to facilitate the construction of metaprograms and then provide a trans. Metaprogramming concepts of programming languages alexander schramm. Scheme or how to interact with it that is the subject of the mit gnu scheme users manual. In some cases, this allows programmers to minimize the number of lines of code to. A comprehensive first course in scheme, covering all of its major features. An important theme throughout is that of metaprogramming. In some cases, this allows programmers to minimize the number of lines of code to express.
Programming and metaprogramming in scheme undergraduate. Template metaprogramming is in fact turingcomplete, meaning that any computation expressible by a computer program can be computed, in some form, by a template metaprogram. Metaprogramming through typeful code representation. Programming and metaprogramming in scheme undergraduate texts in computer science jon pearce on. Although the primary goal is to teach students to program in scheme, this will be suitable for anyone taking. Metaprogramming at first may seem to be an advanced topic, suitable only for programming language gurus, but its not really that difficult once you know how to. Sexpressions an sexpression is either i an atom a identi. Metaprogramming in scheme with an arbitrary number of stages and crossstage persistence. It means that a program can be designed to read, generate, analyze or transform other programs, and even modify itself while running. Of course, boolean expressions evaluate to boolean values and influence what code is executed when and how many times. Racket is a generalpurpose, multiparadigm programming language based on the scheme dialect of lisp. This chapter summarizes the semantics of scheme, briefly describes the mit gnu scheme programming environment, and explains the syntactic and lexical conventions of the language. Learn why metaprogramming is necessary and look at some of the components of metaprogramming textual macro languages, specialized code generators. Mathematica stack exchange is a question and answer site for users of wolfram mathematica.
Meta programming in scheme with an arbitrary number of stages and crossstage persistence. A stepper for scheme macros northeastern university. In addition to the core racket language, racket is also used to refer to the family of programming languages and set of tools supporting development on and with racket. Scheme and the art of programming unm computer science. It is designed to be a platform for programming language design and implementation. A survey of metaprogramming languages acm digital library. Modellinghomogeneousgenerative metaprogramming martin berger1, laurence tratt2, and christian urban2 1university of sussex 2kings college london abstract homogeneous generative metaprogramming hgmp enables the generation of program fragments at compiletime or runtime. Like with all operating systems, however, racket actually supports a host of programming languages, so you 7. In section 3, we describe our requirements on the underlying pro. Common lisp, emacs lisp, and scheme, exemplify this kind of reflective programming 42, 27, 21, 28. In the scheme programming language, the language itself is represented as a linked list and the scheme programming language is built for list processing. An unofficial list of r7rs errata is being collected.
By now, scheme is a wellestablished programming language and is finding. As well as providing a thorough grounding in scheme, the author discusses in depth different programming paradigms. From m s w ord, pdf files have been generated using adobe acrobat. Programming and metaprogramming in scheme jon pearce. That is the subset of metaprogramming called generativeprogramming. In computer science, functional programming is a programming paradigm where programs are constructed by applying and composing functions.
First, the macro transformer itself may raise a runtime exception. Lisp lecture 2 slide 2 lisp was invented by john mccarthy in the late fifties. In structural re ection, the metalevel entities are determined in some way by pro. Metaprogramming cs251 programming languages fall 2017, lyn turbak department of computer science wellesley college these slides borrow heavily from ben woods fall 15 slides. Metaprogramming python 3 patterns, recipes and idioms. Metaprogramming is writing a program which outputs another program. In this paper, therefore, we present the design of a compiletime metaprogramming extension of haskell, a stronglytyped, purelyfunctional language. Directly reflective metaprogramming college of liberal arts. Application and interpretation version second edition shriram krishnamurthi april 14, 2017 1. Scheme has a convenient syntax for representing data literals. Given appropriate inputs, a lisp macro can go wrong in two ways. It is a declarative programming paradigm in which function definitions are trees of expressions that each return a value, rather than a sequence of imperative statements which change the state of the program or world in functional programming. By now, scheme is a wellestablished programming language and is finding increasing popularity in programming courses for undergraduates.
Kent dybvig the scheme programming language2nd edition. Scheme macro programming is therefore functional programming with a rich algebraic datatype. Scheme programs share a common printed representation with scheme data structures. We also provide interesting examples in support of this design. Yes, its a weird name, but its a powerful and dangerous tool. An introduction to metaprogramming for scientific computing dr conrad sanderson senior research scientist version 1. In these languages, it is possible to view any program as a. I dont know who wrote the above, but i think it is wrong. Comparative study of the pros and cons of programming. One of the most underused programming techniques is writing programs that generate programs or program parts. Scheme dybvig 2009 was the first language with a hygienic macro system, pioneered by. Metaprogramming applied to numerical problems mario mulansky and karsten ahnert department of physics and astronomy, university of potsdam metaprogramming is a programming technique where a computer program is written that writes or manipulates another program or itself that then solves a. The first programming language that integrated support for metaprogramming was list processor lisp language in late 1950s.
145 211 1643 446 938 215 181 129 59 1264 1544 1342 844 667 575 516 951 638 570 1001 164 1235 1257 1126 557 1161 406 1628 170 724 989 447 629 636 1395 925 1121 1092 526 104 1017 1259 232 96 1494