Scamper

A mini-Scheme implementation designed for teaching, targeting multimedia applications on the web.

Development

To run a local instance of Scamper for development purposes:

$> npm install    # Install NPM dependencies
$> npm run dev    # Spawns a local vite server to serve the application

Follow the terminal instructions to connect to your local Scamper instance.

Deployment

The deployment script builds Scamper and copies it to <server>:<root>/<version> and adds <server>:<root>/index.html which redirects to this latest version. The deployment script also requires that you are on Mac/Linux and the compsci host points to the correct web server.

$> npm run deploy   # Deploys Scamper

Information about the AST

The parser now outputs a ParserOutput object containing an abstract syntax tree in addition to the lowered scamper code. To access the tree, either run the parser yourself and access the ast field of the ParserOutput, or if you have access to a Scamper object (one is created to run code in ide.ts), you can access the Scamper object's parseroutput.ast field.

The AST object itself is defined in ast.ts, along with SyntaxNode. The tree holds a collection of nodes, and each node holds a textual description and a list of children. Better documentation forthcoming.