VS Code Extension¶

MOL ships with a VS Code extension for syntax highlighting and code snippets.

Installation¶

From Source¶

# Symlink the extension
ln -s /path/to/MOL/mol-vscode ~/.vscode/extensions/mol-lang

# Or copy it
cp -r mol-vscode ~/.vscode/extensions/mol-lang

Restart VS Code. All .mol files will have syntax highlighting.

Features¶

Syntax Highlighting¶

The extension highlights:

Keywords — let, be, show, if, define, pipeline, guard, etc.
Operators — |>, +, -, *, /, ==, !=, and, or, not
Types — Thought, Memory, Node, Document, Embedding, etc.
Built-in functions — All 90+ stdlib functions
Comments — -- comment
Strings — "text" with escape sequences
Numbers — integers and floats

Code Snippets¶

Prefix	Snippet
`mol-let`	Variable declaration
`mol-fn`	Function definition
`mol-if`	If/else block
`mol-for`	For loop
`mol-while`	While loop
`mol-pipe`	Pipe chain
`mol-guard`	Guard assertion
`mol-pipeline`	Pipeline definition
`mol-thought`	Thought constructor
`mol-node`	Node constructor
`mol-rag`	RAG pipeline template

File Association¶

The extension associates .mol files with the MOL language, providing:

Syntax-aware bracket matching
Auto-closing pairs (", (, [, {)
Comment toggling (--)
Folding markers (if/end, define/end, for/end, etc.)

Extension Structure¶

mol-vscode/
├── package.json                 # Extension manifest
├── language-configuration.json  # Language settings
├── syntaxes/
│   └── mol.tmLanguage.json     # TextMate grammar
└── snippets/
    └── mol.json                # Code snippets