An implementation of a hygienic syntactic macro system for JavaScript

Arai, Hiroshi; Wakita, Ken

doi:10.1145/1942793.1942798

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…2 Now the macro definition has been removed and an occurrence of the let macro usage has been expanded according to the corresponding replacement template and is replaced by a lambda application. It should be noted that the hygienic macro expander has renamed the variable introduced by the macro template, namely V-a and V-b to fresh names V-where_200_ and V-a_200_, respectively.…”

Section: Macro Expansion Phasementioning

confidence: 99%

“…The implementation of our previous work [2] is done in about the same lines of code of Scheme. However, in this work the implementation of the parser relied on an ad-hoc extention of a top-down operator precedence parser and that implementation suffered from poor extensibility, was difficult to understand, and posed restricted meta-syntax.…”

Section: Performance Of Macro Expansionmentioning

confidence: 99%

“…Our previous work [2] and sweet.js 5 are two hygienic macro systems for JavaScript. Both systems support macro features similar to R 6 RS syntax-rules, such as pattern match and dots.…”

Section: Interference With the Precedence Rulementioning

confidence: 99%

“…In our framework, macro expansion is delegated to the macro expander of a Scheme interpreter, following the technique that we have previously proposed [2]. The macro-enhanced program described in the host programming language is converted to S-expression, which is expanded by the macro expander of Scheme to generate a macro-free S-expression, which finally is converted back to the host programming language.…”

Section: Introductionmentioning

confidence: 99%

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Hygienic Macro System for JavaScript and Its Light-weight Implementation Framework

Wakita

Homizu

Sasaki

2014

Proceedings of ILC 2014 on 8th International Lisp Conference

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In spite of its soundness, ease of use, and descriptive power, few hygienic macro systems have been incorporated to non-LISP programming languages. The difficulty lies in the self-describing nature of the macro system. Proposed is the design and a systematic implementation framework of hygienic macro systems for general programming languages. In addition to the standard syntax-rules macro features, our macro system incorporates handling of punctuations and keywords, introduces invisible blocks of code called phantom groups, and proposes the notion of suffix pattern to address problems due to recursive macro definitions. These features have been introduced to deal with richer syntax of general programming languages. The proposed implementation framework incorporates staged parser architecture, a parser generation technique using parsing expression grammars, and mutual conversion technique between the macro-enabled host language and Scheme that allows our macro system to delegate actual macro expansion task to a Scheme interpreter, instead of building hygienic macro expander from scratch. ExJS, our prototype implementation of a hygienic macro system for JavaScript, is implemented in less than 2,000 lines of JavaScript and Scheme, and exhibits its flexible syntactic extensibility.

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Section: Macro Expansion Phasementioning

confidence: 99%

Section: Performance Of Macro Expansionmentioning

confidence: 99%

“…Our previous work [2] and sweet.js 5 are two hygienic macro systems for JavaScript. Both systems support macro features similar to R 6 RS syntax-rules, such as pattern match and dots.…”

Section: Interference With the Precedence Rulementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hygienic Macro System for JavaScript and Its Light-weight Implementation Framework

Wakita

Homizu

Sasaki

2014

Proceedings of ILC 2014 on 8th International Lisp Conference

Self Cite

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“…Lexical macro systems," such as the C preprocessor, transform the code before compilation. Lexical macros are ignorant of the grammar of the core programming language and therefore sometimes result in ill-formed programs and in accidental capture of identifiers [3]. They only require lexical analysis;…”

Section: What Are Macros?mentioning

confidence: 99%

Adding Syntax Parameters to the Sweet.JS Macro Library for JavaScript

Kumar

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Adding Syntax Parameters to the Sweet.JS Macro Library for JavaScript by Vimal Kumar Lisp and Scheme have demonstrated the power of macros to enable programmers to evolve and craft languages. A macro is a rule or pattern that specifies how a certain input sequence should be mapped to an output sequence according to some defined procedure. Using a macro system a programmer can introduce new syntactic elements to the programming language. Macros found in a program are expanded by a macro expander and allow a programmer to enable code reuse. Mozilla Sweet.JS provides a way for developers to enrich their JavaScript code by adding new syntax to the language through the use of macros. Sweet.JS provides the possibility to define hygienic macros inspired by Scheme. " In this paper, I present the implementation of a "syntax parameter" feature for the Sweet.JS library. A syntax parameter is a mechanism for rebinding a macro definition within the dynamic context of a macro expansions thereby introducing implicit identifiers in a hygienic fashion. Some time hygienic macro bindings are insufficient such as with "anaphoric conditionals" where the value of the tested expression is available as an it binding. With syntax parameters, instead of introducing the binding unhygienically each time, we instead create one binding for the keyword, which we can then adjust later when we want the keyword to have a different meaning. As no new bindings are introduced hygiene is preserved. " ACKNOWLEDGMENTS This project would not have been possible without the kind support and help of many individuals. I would like to extend my sincere thanks to all of them. I am highly indebted to Dr. Thomas Austin, and Tim Disney, for their guidance and constant supervision as well as for providing necessary information regarding the project & also for their support in completing the project. I would like to thank my

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Honu

Rafkind

Flatt

2012

Proceedings of the 11th International Conference on Generative Programming and Component Engineering

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An implementation of a hygienic syntactic macro system for JavaScript

Cited by 6 publications

References 12 publications

Hygienic Macro System for JavaScript and Its Light-weight Implementation Framework

Hygienic Macro System for JavaScript and Its Light-weight Implementation Framework

Adding Syntax Parameters to the Sweet.JS Macro Library for JavaScript

Honu

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