Narcissus: Difference between revisions

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(info on running, moved development info to separate page)
 
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== Downloading ==
== Downloading ==


Narcissus is included in the main SpiderMonkey source code tree. To download it, follow the instructions for [https://developer.mozilla.org/en/SpiderMonkey_Build_Documentation downloading and building the SpiderMonkey source], and run the "njs" script from the build directory.
Narcissus is not currently available as a standalone distribution. It is included in the main SpiderMonkey source code tree. To download it, follow the instructions for [https://developer.mozilla.org/en/SpiderMonkey_Build_Documentation downloading and building the SpiderMonkey source].


== Terminology ==
== Running at the command-line ==


Since JavaScript is both the language of the implementation and the language being implemented, it's helpful to distinguish the two levels conceptually. We use the term '''host''' ("host code," "host JavaScript," etc) to describe the JavaScript code of the implementation and '''user''' ("user code," "user JavaScript," etc)  to describe the JavaScript code being interpreted.
After building SpiderMonkey, your build directory includes a Python script called <code>njs</code>.


Usage: njs
Options:
  -h, --help            show this help message and exit
  -f FILE, --file=FILE  JS file to load
  -e JS_EXPS, --expression=JS_EXPS
                        JS expression to evaluate
  -i, --interactive    enable interactive shell
  -H, --harmony        enable ECMAScript Harmony mode
== Running in the browser ==
Not yet supported. We're working on it.
== Development ==
See [[Narcissus/Development]].


== Contributors ==
== Contributors ==

Latest revision as of 17:57, 7 August 2010

Narcissus is a JavaScript interpreter written in pure JavaScript, using the SpiderMonkey engine.

Originally a proof-of-concept by Brendan Eich, Narcissus is being revived as a test-bed for rapidly prototyping new language features for the JavaScript language (and ECMAScript standard).

Downloading

Narcissus is not currently available as a standalone distribution. It is included in the main SpiderMonkey source code tree. To download it, follow the instructions for downloading and building the SpiderMonkey source.

Running at the command-line

After building SpiderMonkey, your build directory includes a Python script called njs. 

Usage: njs

Options:
  -h, --help            show this help message and exit
  -f FILE, --file=FILE  JS file to load
  -e JS_EXPS, --expression=JS_EXPS
                        JS expression to evaluate
  -i, --interactive     enable interactive shell
  -H, --harmony         enable ECMAScript Harmony mode

Running in the browser

Not yet supported. We're working on it.

Development

See Narcissus/Development.

Contributors

  • Tom Austin
  • Brendan Eich
  • Andreas Gal
  • Shu-yu Guo
  • Dave Herman
  • Dimitris Vardoulakis
  • Patrick Walton
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