Function Inspector

A lightweight VS Code extension for exploring functions, methods, and classes across your active file or entire workspace.

Browse code structure, inspect function statistics, jump to implementations, compare functions, and copy source code directly from the sidebar.

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Features

Active File Mode

Command:

Function Inspector: Active File

Shows symbols from the currently open editor.

Displays:

• Functions
• Methods
• Classes
• Nested symbols (language provider dependent)

Includes:

• Function statistics
• Line counts
• Range information
• Collapse / Expand tree support

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Workspace Mode

Command:

Function Inspector: Workspace

Scans supported files across the workspace.

Features:

• File grouping
• File icons (theme dependent)
• Open files directly
• Browse functions by file
• Workspace statistics

Clicking a file node opens the editor.

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Sidebar Controls

Refresh button

Performs a hard refresh by click the refresh symbol in the Function Inspector sidebar.

Clears:

• Symbol cache
• Statistics cache

Then rebuilds the tree.

Useful when:

• symbols stop updating
• language servers refresh
• extensions reload
• parser output changes

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Collapse All

Use the built-in Collapse All button in the tree view toolbar.

Quickly collapse the entire explorer tree.

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Function Actions

Available from function nodes.

Select Function

Opens the source file and selects the full function body.

Copy Function

Copies the full function source to the clipboard.

Compare Functions

Select two functions.

Run:

Function Inspector: Compare Functions

Opens a VS Code diff view comparing both implementations.

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Command Palette Commands

Only these commands appear directly in the Command Palette:

Command
Function Inspector: Active File
Function Inspector: Workspace
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Other actions are available through the explorer UI.

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Language Support

Function Inspector relies on:

vscode.executeDocumentSymbolProvider

Language support depends on installed symbol providers.

Supported File Discovery

.c
.cpp
.cc
.h
.hpp
.cs
.py
.js
.ts
.jsx
.tsx

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Required Extensions

JavaScript / TypeScript

Built into VS Code.

No installation required.

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Python

Install:

Python (Microsoft)

Recommended:

Pylance (Microsoft)

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C / C++

Install:

C/C++ (Microsoft)

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C#

Install ONE of:

C# Dev Kit (Microsoft)

or

C# (OmniSharp)

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Without these extensions:

• no symbols may appear
• workspace results may be empty
• nested symbols may be missing

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Caching

Function Inspector caches:

• document symbols
• calculated statistics

Use Refresh Button to perform a hard reset when results appear stale.

Known Issues

Symbol Availability

Languages expose symbol trees differently.

Examples:

• namespaces
• nested classes
• local functions
• language-specific parser behavior

Results vary by:

• language server
• extension version
• parser implementation

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Large Workspaces

Very large workspaces may experience slower scans.

Workspace mode currently searches supported source files and requests symbol information for discovered files.

Performance depends heavily on language provider performance.

Python isort Server Crashes

Some Python setups may display errors like:

isort client: couldn't create connection to server
The isort server crashed 5 times...

This can be caused by the Python environment or formatter extension.

Missing Functions/Classes

Local functions and nested methods depend on the language provider.

Some languages may omit nested symbols.

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Release Notes

1.0.0

Initial release.

Features:

• Active file explorer
• Workspace mode
• Refresh Button
• Function stats
• Compare functions
• Copy function source
• Function selection
• File opening
• Tree navigation