LSP & Editor Support

OpenPine includes a full Language Server Protocol (LSP) implementation and a VS Code extension.

Features

The LSP supports 20+ capabilities:

Feature	Description
Diagnostics	Real-time error and warning reporting
Completions	Context-aware code completions
Signature Help	Function parameter hints
Hover	Type information and documentation on hover
Go to Definition	Jump to function/type/variable definitions
Go to Type Definition	Jump to the type of a symbol
Find References	Find all usages of a symbol
Document Highlights	Highlight all occurrences of a symbol
Document Symbols	Outline of functions, types, variables
Workspace Symbols	Search symbols across files
Rename	Rename a symbol across the project
Document Colors	Color preview for color literals
Formatting	Auto-format Pine Script code
On-Type Formatting	Format as you type
Semantic Tokens	Rich syntax highlighting
Inlay Hints	Inline type and parameter hints
Code Lens	Inline actions above functions
Folding Ranges	Code folding for blocks
Call Hierarchy	Incoming/outgoing call trees

VS Code Extension

Installation

The VS Code extension is located at crates/lsp/editors/vscode/.

Build and install:

cd crates/lsp/editors/vscode
npm install
npm run build
npm run package
code --install-extension openpine-0.1.0.vsix --force

Features

• Syntax highlighting via TextMate grammar
• All LSP features listed above
• Pine Script file association (.pine files)

Running the LSP Server

Stdio Mode (default)

cargo run -p openpine-lsp

TCP Mode

cargo run -p openpine-lsp -- --tcp --port 9257

Using the Analyzer API

For programmatic use, the Analyzer struct provides direct access to LSP features:

use openpine_lsp::Analyzer;

let analyzer = Analyzer::new(loader);
let result = analyzer.analyze("script.pine", source);

// Get diagnostics
let diagnostics = result.diagnostics();

// Get completions at a position
let completions = result.completions_at(position);

// Go to definition
let definition = result.definition_at(position);

// Find all references
let references = result.references_at(position, include_declaration);

// Get document symbols
let symbols = result.document_symbols();

// Get document colors
let colors = result.document_colors();

Neovim Setup

For Neovim with nvim-lspconfig:

local lspconfig = require('lspconfig')
local configs = require('lspconfig.configs')

configs.openpine = {
  default_config = {
    cmd = { 'path/to/openpine-lsp' },
    filetypes = { 'pine' },
    root_dir = lspconfig.util.find_git_ancestor,
  },
}

lspconfig.openpine.setup{}