WebInterpreter
A javascript-based web interpreter for custom programming languages.
During syntactic analysis, stores nodes which use the Command pattern to be executed. Values are pushed to a stack so that nodes can retrieve them. Nodes also have access to the symbol table and other utilities.
The interpreter is also cached (using service workers) to provide offline access.
Project structure
- Lexical specification: grammar/scanner.jisonlex
- Syntactic/semantic specification: grammar/parser.jison
- Node types: scripts/core/Actions.ts
- Symbol definition: scripts/core/Definitions.ts
- UI customization: scripts/UI.ts, index.html, css/styles.css
The other files, in theory, don't need to be changed at all.
A basic example of how to use this system is implemented.
User interface features
- Up/down arrows: history navigation
- Dot (.): equivalent to the up arrow (better usability for mobile devices)
- Esc: clears the input
- Enter: submits the input
Dependencies
jQuery and requireJS are also dependencies, but make automatically downloads them.
Usage
- Make any changes you want.
make- Open/refresh
index.htmlin your browser.