Pine Script Language Server

The definitive Visual Studio Code extension for Pine Script™ development.

This extension provides a rich set of language support features for Pine Script™, the programming language for creating custom indicators and strategies on TradingView. It leverages real-time linting via TradingView's API and combines it with powerful local parsing to deliver an intelligent and responsive coding experience.

📋 Requirements

• VS Code: Version 1.96.0 or newer.
• ErrorLens Extension: This extension is highly recommended for the best experience, as it's used to display linting errors and warnings inline.

✨ Features

Syntax Highlighting & Themes

• Advanced Syntax Highlighting: Detailed and accurate syntax grammar for all Pine Script keywords, types, functions, and operators.
• Embedded Highlighting: Pine Script code blocks within Markdown files (.md) are also highlighted correctly. (Not in md Preview however.)
• Extensive Theme Collection: Comes bundled with over 20 custom themes designed for Pine Script, including a variety of dark and light options like Pine-Preferred, Pine-V4-Classic, and Pine-1980, extended schemes that work well across other languages as well.

IntelliSense & Code Assistance

• Advanced Autocompletion:
  • Built-in & User-Defined Symbols: Get suggestions for all built-in and user-defined functions, variables, constants, and User-Defined Types (UDTs).
  • Context-Aware Methods: Receive type-aware suggestions for methods (e.g., array.push(), table.cell()).
  • Argument Completions: Get suggestions for function parameter names and valid values (e.g., plot.style options).
  • UDT Support: Autocompletes UDT constructors (MyType.new(...)) and their fields (myInstance.fieldName).
  • Typo Tolerance: A fuzzy-matching algorithm provides suggestions even with minor typos.
• Inline "Ghost Text" Completions: Subtle, single-line suggestions for functions and arguments appear directly in your editor as you type.
• Signature Help (Parameter Info): A tooltip appears as you type a function call, showing its parameters, documentation, and highlighting the active one. Supports function overloads.
• Rich Hover Information: Hover over any symbol (function, variable, etc.) to get detailed information, including syntax, a full description, parameter details, and a link to the official documentation.
• Library Import Support:
  • Library Completion: Autocompletes library import paths (e.g., import johndoe/MyLibrary/1).
  • Library Hover: Hover over an import statement to see the library's details and source code.

Code Analysis & Quality

• Real-time Linting:
  • Errors and warnings are detected as you type, powered by the engine behind the TradingView Pine Editor.
  • Issues are underlined and displayed inline (via ErrorLens) and listed in the "Problems" panel.
  • Supports Pine Script v5 and v6.
• Local Code Parsing: The extension maintains an in-memory model of your code, parsing user-defined functions, types (UDTs), and docstrings (@function, @param) for intelligent features without needing to save.

Code Generation & Manipulation

• Docstring Generator: Automatically generate structured documentation blocks for your functions, types, and enums with the pine.docString command.
• Code Templates: Quickly start a new project with built-in templates for Indicators, Strategies, and Libraries.
• Typify (Experimental): The pine.typify command analyzes your code and automatically adds explicit type annotations to variable declarations where the type can be inferred.
• Rename Symbol (F2): Safely rename variables and functions within the current file. (Not yyet scope, but whole file)

UI & Visual Enhancements

• Inline Color Picker: A color swatch appears in the gutter for any Pine Script color literal. Clicking it opens a full color picker.
• Built-in Script Browser: The pine.getStandardList command opens a menu to browse and open any of TradingView's built-in indicators.
• Context Menu Integration: Right-click in the editor to quickly access relevant commands like generating docstrings or creating new scripts.

🚀 Commands

Access these via the Command Palette (Ctrl+Shift+P or Cmd+Shift+P) or the right-click context menu.

🛠️ Technical Overview

This extension is built with a modular architecture for maintainability and performance.

• PineDocsManager: Manages all built-in documentation and integrates information parsed from the user's active code and imported libraries.
• PineParser: A local parser using regular expressions to understand user-defined functions, types (UDTs), and enums in real-time.
• PineRequest: An HTTP client responsible for all communication with the pine-facade.tradingview.com API for linting and library data.
• PineLint: Orchestrates the linting process and displays diagnostics in the editor.
• PineCompletionService: A centralized service that consolidates completion items from all sources before they are passed to the VS Code UI.
• Providers: The extension registers individual providers for each of VS Code's language features (e.g., PineHoverProvider, PineCompletionProvider), which consume the services above.