ProtoScript

ProtoScript is a C reimplementation of an ECMAScript 1 core (almost JavaScript 1.3), designed as a minimal, embeddable scripting language.

It is a standalone command-line interpreter and does not target browsers, the DOM, HTML, or any client-side runtime.

The engine uses a glyph-based Unicode model (UTF-8), not UTF-16.

ProtoScript does not aim for modern JavaScript or browser compatibility.

Manifest

Prototype-Based Languages: A Different Way to Think

Demo

You can test ProtoScript immediately thanks to a demo running on the web via WebAssembly (compiled with emscripten):

Try it now: ppyne.github.io/ProtoScript/

Documentation

• The technical foundation: Object Creation with ES1
• User guide: docs/user_guide/toc.md
• Language reference: docs/language_reference.md
• ES1 deviations: docs/es1-notes.md
• String model spec: docs/string-spec.md
• Io module spec: docs/io_spec.md
• GC spec: docs/gc_spec.md
• ECMA-262 Edition 1 (June 1997): docs/ECMA-262_1st_edition_june_1997.pdf
• License (BSD-3-Clause): LICENSE

Build

No external dependencies are required.

make

Tests

make test

Examples

Run an example:

./protoscript examples/hello.js

Usage (file or stdin):

./protoscript script.js
cat script.js | ./protoscript
echo 'Io.print("Hello world\n");'| ./protoscript
./protoscript < script.js
./protoscript - < script.js

Other examples:

• examples/basics.js
• examples/arrays.js
• examples/strings.js
• examples/objects.js