PRIOR

Language support for PRIOR, the tiny declarative language for trading strategies.

when $NVDA at [lower_bollinger std=1]
  buy [5% portfolio]

sell when $NVDA at [middle_bollinger]
  or [stop 1.5%]
  or [after 5 bars]

Features

• Syntax highlighting for .prior files — keywords, tags, tickers, spreads, timeframes
• Completions for the full tag vocabulary, with parameter placeholders and per-tag docs
• Hovers — what [lower_bollinger] actually expands to, every parameter and default, prebuilt universe contents
• Diagnostics as you type — the real compiler's errors, line-precise, with did-you-mean suggestions
• Formatting — prior fmt as the document formatter (canonical statement order and spacing)
• Snippets — strategy-meanreversion, strategy-momentum, strategy-wheel, strategy-pairs, strategy-mixed

Requirements

Highlighting, completions, and hovers work out of the box. Diagnostics and formatting shell out to the prior CLI so the editor reports exactly what the compiler will say:

pip install prior-lang

If prior isn't on your PATH, the extension falls back to python3 -m prior_lang.cli, or set prior.command in settings.

Settings

Learn more

• Language specification
• Tag reference
• Guides and tutorials

PRIOR is built and stewarded by AutoQuant.