Domain-specific language

A domain-specific language (DSL) is a computer language specialized to a particular application domain.

This is in contrast to a general-purpose language (GPL), which is broadly applicable across domains.

Description

There are a wide variety of DSLs, ranging from widely used languages for common domains, such as HTML for web pages, down to languages used by only one or a few pieces of software, such as Emacs Lisp for GNU Emacs and XEmacs.

DSLs can be further subdivided by the kind of language, and include domain-specific markup languages, domain-specific modeling languages (more generally, specification languages), and domain-specific programming languages.

Special-purpose computer languages have always existed in the computer age, but the term "domain-specific language" has become more popular due to the rise of domain-specific modeling.

Simpler DSLs, particularly ones used by a single application, are sometimes informally called mini-languages.

The line between general-purpose languages and domain-specific languages is not always sharp, as a language may have specialized features for a particular domain but be applicable more broadly, or conversely may in principle be capable of broad application but in practice used primarily for a specific domain.

For example, Perl was originally developed as a text-processing and glue language, for the same domain as AWK and shell scripts, but was mostly used as a general-purpose programming language later on.

By contrast, PostScript is a Turing complete language, and in principle can be used for any task, but in practice is narrowly used as a page description language.

See also

• Architecture description language
• Cognitive dimensions of notations
• Combinator library
• Domain analysis
• Domain-specific entertainment language
• Domain-specific modeling
• Domain-specific multimodeling
• Configuration file
• Fluent interface
• Metacompiler
• Metalinguistic abstraction
• Metamodeling
• Model-driven engineering
• Multi-paradigm programming language
• Programming domain
• Programming paradigm
• Specification and Description Language
• Probabilistic programming language (PPL)

External links

• Domain-specific language @ Wikipedia.org