Visit us on the Web: maroc-evasion.info Library of Congress Cataloging-in- Publication Data: Fowler, Martin, Domain-specific languages / Martin Fowler. Domain Specific Languages (DSLs) have been around since I've been in computing, but it's hard to An external DSL is a language that's parsed independently of the host general purpose language: InformIT has epub and pdf versions. Bookreview JFP: Domain-Specific Languages by Martin Fowler The Addison Wesley Signature Series. Article (PDF Available) in Journal of.
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It involves Domain Specific Languages (DSLs) and automatic code .. Martin. Fowler and Eric Evans refer to internal DSL as a fluent. interface. Domain-Specific. Languages. Martin Fowler. With Rebecca Parsons. AAddison- Wesley. Upper Saddle River, NJ • Boston • Indianapolis • San Francisco. Domain Specific Languages Fowler Pdf Download by Wileapili, released 16 . maroc-evasion.info
This improves programmer productivity, which is always valuable.
In particular it may also improve communication with domain experts, which is an important tool for tackling one of the hardest problems in software development. CSS is an excellent example of this, most people who program CSS don't consider themselves to be programming.
Despite this, however, I don't generally think that end-users will usually write in DSLs directly - it's the communication enhancement that's important. Although DSLs have been around for a long time, the lack of knowledge of how to program with them is a significant barrier - which is exactly why I've worked on this book.
The books provides techniques to develop both internal and external DSLs, giving you both the information to choose between them and a good package of information to begin your work. I also stress the importance of layering a DSL over a library, so that you usually build both together.
There's also material on code-generation, which is an occasionally essential part of working with a DSL. Like P of EAA this book is a Duplex Book , providing both a narrative to learn about DSLs and a reference book for the details, so don't be scared by the high page count.
You can get a good grasp of the topic by reading the narrative section pages and use the rest as a reference to dip into when you need it.
Electronic copies of this book are available. site has a version for kindle. InformIT has epub and pdf versions. Apple has an epub version in the ibookstore. Dr Dobbs: Unix shell scripts[ edit ] Unix shell scripts give a good example of a domain-specific language for data  organization. They can manipulate data in files or user input in many different ways.
Domain abstractions and notations include streams such as stdin and stdout and operations on streams such as redirection and pipe. These abstractions combine to make a robust language to describe the flow and organization of data.
The language consists of a simple interface a script for running and controlling processes that perform small tasks. These tasks represent the idioms of organizing data into a desired format such as tables, graphs, charts, etc.
These tasks consist of simple control-flow and string manipulation mechanisms that cover a lot of common usages like searching and replacing string in files, or counting occurrences of strings frequency counting. Even though Unix scripting languages are Turing complete , they differ from general purpose languages. ColdFusion Markup Language[ edit ] ColdFusion 's associated scripting language is another example of a domain-specific language for data-driven websites. This scripting language is used to weave together languages and services such as Java,.
The language is now officially open source and can be downloaded from their website. FilterMeister[ edit ] FilterMeister is a programming environment, with a programming language that is based on C, for the specific purpose of creating Photoshop -compatible image processing filter plug-ins; FilterMeister runs as a Photoshop plug-in itself and it can load and execute scripts or compile and export them as independent plug-ins.
Although the FilterMeister language reproduces a significant portion of the C language and function library, it contains only those features which can be used within the context of Photoshop plug-ins and adds a number of specific features only useful in this specific domain. MediaWiki templates[ edit ] The Template feature of MediaWiki is an embedded domain-specific language whose fundamental purpose is to support the creation of page templates and the transclusion inclusion by reference of MediaWiki pages into other MediaWiki pages.
Software engineering uses[ edit ] There has been much interest in domain-specific languages to improve the productivity and quality of software engineering. Domain-specific language could possibly provide a robust set of tools for efficient software engineering.
Such tools are beginning to make their way into the development of critical software systems. The Software Cost Reduction Toolkit  is an example of this. The toolkit is a suite of utilities including a specification editor to create a requirements specification , a dependency graph browser to display variable dependencies, a consistency checker to catch missing cases in well-formed formulas in the specification, a model checker and a theorem prover to check program properties against the specification, and an invariant generator that automatically constructs invariants based on the requirements.
A newer development is language-oriented programming , an integrated software engineering methodology based mainly on creating, optimizing, and using domain-specific languages.