Function Inspector

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

Function Inspector provides a tree-based view of your code structure with support for function statistics, source navigation, multi-selection, copying, comparison, and customizable display options.

Features

Active File Mode

Command:

Function Inspector: Active File

Shows symbols from the currently opened file editor.

Displays:

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

Includes:

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

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.

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

Collapse All

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

Quickly collapse the entire explorer tree.

Display Settings

Available options include:

Toggle Function Details - Shows Number of lines and range Toggle Parameters - Shows function name (dependent on symbol provider) Toggle Paths - Shows only file name

These settings allow the tree to be customized depending on how much information you want displayed.

Function Actions

Available from nodes in the Function Inspector view

Select Function

Opens the source file and selects the full function body.

Copy Function

Copies the full function source to the clipboard. Multiple functions can be selected and copied at once.

Compare Functions

Select two functions and right click to select compare functions.

Command Palette Commands

Only these commands appear directly in the Command Palette:

Other actions are available through the explorer UI.

Language Support

Symbol discovery is therefore handled by the language provider extensions rather than by a custom parser built into Function Inspector.

This allows Function Inspector to work with any language that provides compatible document symbols.

Without these extensions:

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

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

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.

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

1.6.0

Updated for the love of the game

Features:

• Multiple function copying
• Customizable display settings
• Updated stats
  • Function parameters display
  • Function path display
  • Function detail display
• Expanded symbol support across a wider range of languages