MAML for Visual Studio Code

Language support for MAML (Minimal Abstract Markup Language).

Features

Syntax highlighting — full TextMate grammar for .maml files
Validation — real-time parse error diagnostics
Formatting — format documents with consistent style (Shift+Alt+F)
Document outline — navigate keys and structure via the Outline panel (Ctrl+Shift+O)
Folding — collapse objects, arrays, and raw strings
Hover — type and value information on hover
Completion — keywords (true, false, null), structure snippets, and known keys from the document
Bracket matching — auto-close {}, [], ""
Comment toggling — toggle # line comments (Ctrl+/)

Settings

Setting	Default	Description
`maml.validate`	`true`	Enable/disable validation diagnostics
`maml.format.enable`	`true`	Enable/disable document formatting

What is MAML?

MAML is a minimal, human-readable data format. Think JSON, but cleaner:

{
  project: "MAML"
  tags: [
    "minimal"
    "readable"
  ]

  # Comments are supported
  spec: {
    version: 1
    author: "Anton Medvedev"
  }

  notes: """
Raw multiline strings.
No escaping needed.
"""
}

Key differences from JSON:

# comments
Unquoted keys
Optional commas (newlines work as separators)
Raw multiline strings with """
No trailing comma errors

Learn more at maml.dev.

Development

npm install
npm run build
npm run watch   # rebuild on changes
npm run lint    # type-check

To test locally, press F5 in VS Code to open an Extension Development Host.

License

MIT

MAML Language