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...nguage (collective) to incorporate and assimilate external domains (cultures) in order to strengthen itself. The ease of implementing embeddings makes resistance futile. with user-definable operators =-=[23]-=-, overloading of (a fixed set of) operators, syntax macros [30], or grammar formalisms supporting only a subset, such as LL or LALR, of the context-free grammars [13, 2]. The only proviso we make is t...

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...stems require that designers translate their intended visual design into toolkit abstractions, often hindering accessibility. In response, we contribute Protovis, an embedded domain-specific language =-=[19]-=- for constructing visualizations by composing simple graphical marks such as bars, lines and labels. In Protovis, designers specify visualizations as a hierarchy of marks with visual properties define...

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...tructs, 25 such as those for pattern matching or collection attributes. More generally, there are other approaches for specifying languages and language extensions. Embedded domain-specific languages =-=[25,34]-=- and macro systems (whether traditional syntactic [7,33], hygienic [29,9] or programmable [51]) allow the addition of new constructs to a language but they lack an effective way to specify semantic an...

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...nguage as terms and values in the metalanguage. Embedding is especially appropriate for domainspecific object languages because it supports rapid prototyping and integration with the host environment =-=[16]-=-. If the metalanguage supports staging, then the embedding can compile object programs to the metalanguage and avoid the overhead of interpreting them on the fly [23]. A staged definitional interprete...

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... implement optimizing transformations. In Silver, such transformations must be encoded as definitions of higher-order attributes. Other Approaches to Extensibility: Embedded domain-specific languages =-=[11]-=- and macro systems (traditional syntactic, hygienic and programmable [31]) allow the addition of new constructs to a language but lack an effective way to specify semantic analysis and report domain s...

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...meworks mostly help authors develop external DSLs and provide tools that help in the construction and transformation of an abstract syntax tree. We adopt an approach similar to that presented by Hudak=-=[17]-=- and embed our DSLs directly into a host language. Previous work has also shown the benefit of using domain knowledge to enhance the performance of applications: Menon et al demonstrate the benefits o...

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... for arbitrary d-dimensional stencils, and then it automatically produces a highly optimized, cacheefficient, parallel implementation. The Pochoir language can be viewed as a domain-specific language =-=[10, 21, 31]-=- embedded in the base language C++ with the Cilk multithreading extensions [23]. As shown in Figure 4, the Pochoir system operates in two phases, only the second of which involves the Pochoir compiler...