A CodeMirror 6 extension that highlights Assembly code and assembles it incrementally.

This package uses the DefAssembler core package to generate binary dumps from Assembly code. For a demonstration of the plugin in action, I recommend checking out the GitHub Pages site, or alternatively, the Code Golf editor, where you can also run your programs and submit them to the site.

The package exports the assembly() function, which returns an extension that can be added to the editor. The configuration object passed to the function may include the following boolean fields:

• byteDumps - whether to display the results of the assembly on the side of the editor
• debug - whether to enable toggling debug mode when pressing F3
• errorMarking - whether to draw a red underline beneath segments of code that cause errors
• errorTooltips - whether to show a tooltip on these segments explaining the cause of the error
• highlighting - whether to enable syntax highlighting using a LanguageSupport object

By default, all of these fields, except for debug, are set to true. Additionally, an assemblyConfig field may be provided to be passed into the AssemblyState constructor.

The AssemblyState object associated with the editor may be accessed through the ASMStateField state field, as such:

import { assembly, ASMStateField } from "@defasm/codemirror";
new EditorView({
    dispatch: tr => {
        const result = editor.update([tr]);
        const state = editor.state.field(ASMStateField);
        byteCount = state.head.length();
        return result;
    },
    state: EditorState.create({ extensions: [assembly()] })
});