A JavaScript implementation of SOM, a minimal Smalltalk for teaching and research.

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Frameworks ohm-som
Overview

ohm-som

A JavaScript implementation of SOM, a minimal Smalltalk for teaching and research. Just a hobby, won't be big and professional like TruffleSOM.

Status

2021-05-23: ⚠️ Under construction ⚠️ , but it now passes the majority of the SOM test suite.

Usage

Example:

node bin/som.mjs --classpath test/data HelloWorld

Scripts

  • npm test runs the smaller unit / integration tests (should all pass)
  • npm run som-test-suite runs the SOM test suite (not expected to pass yet)

Debugging

There are two environment variables you can set to make debugging easier.

Use DEBUG_GENERATED_CLASSES=true to write out the generated JS code for all SOM classes as they are loaded. These are written to the same directory as the original SOM source. E.g., for Array.som, the generated code will be written to Array.som.js.

If you set USE_PREGENERATED_CLASSES=true, the runtime will use the pre-generated JS code from the appropriate .som.js file if it exists. This allows you to easily insert console.log statements, etc. into the JavaScript code, making it easier to debug runtime issues.

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Comments
  • Upgrade to Ohm v16 pre-release

    Upgrade to Ohm v16 pre-release

    • Fix semantic actions that were relying on the default _iter action to explicitly map over the iter node's children. For example, someIter.toJS() is changed to someIter.children.map(c => c.toJS()).
    • Use the new @ohm-js/cli package to generate a recipe for the grammar, which is a standalone module from which we can directly import and instance of the grammar.
    opened by pdubroy 0
Owner
Patrick Dubroy
Patrick Dubroy
GitHub
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