Go Interface Detector is a lightweight Visual Studio Code extension that brings the familiar GoLand-like gutter icons and CodeLens functionality to Go interfaces and their implementations. It provides a visual indicator to rapidly see which types implement which interfaces, along with robust bi-directional navigation.
Features
Gutter Icons: Automatically displays a distinctive green check gutter icon next to interface methods and the receiver methods of structs that implement them.
CodeLens: Adds "N implementation(s)" and "implements " floating hints directly in your code.
Bi-Directional Navigation: Navigate instantly from an interface to its implementing types, or vice versa, either using the built-in Peek panel or an interactive Quick Pick dropdown menu.
Extension Settings
This extension contributes the following settings that can be customized in your user or workspace settings (settings.json):
goInterfaceDetector.navigationBehavior: Determines how multiple target locations are displayed when navigating.
"peek"(default): Opens the standard, inline VS Code Peek References panel showing all matches.
"quickPick": Opens a compact, interactive VS Code Quick Pick dropdown showing the filename and line number, allowing for swift keyboard-driven navigation.
Usage
When you open a Go file (.go):
Look for the gutter icons (green check marks) next to receiver methods that successfully satisfy an interface.
Click the N implementation(s) CodeLens above interface methods to see what structs implement them.
Click the implements InterfaceName CodeLens above a struct's receiver method to jump directly to the interface definition.
Development & Building
To build the extension locally:
npm install
npm run compile
Press F5 in VS Code to spawn a new Extension Development Host window with the extension loaded.
