Inline Parameters Extended for VSCode

Now with Golang and Python support!

This extension implements the new Inlay Hints API to add Inline Parameters for Golang, Java, Lua, PHP, and Python.

This is a feature that was popularized by JetBrains' IDEs that can give you additional context when reading your code, making it easier to understand what different function parameters refer to by showing the parameter's name inline.

Speed up your development with parameter hints!

Language Support

Currently, this extension supports the following languages:

• Golang
• Java
• Lua (with Sumneko's Lua language server)
• PHP (with the Intelephense language server)
• Python

Settings

The extension provides a handful of configuration settings you can use to customise the look and behaviour of the parameters.

Name	Description	Default
inline-parameters.go.enabled	Show inline parameters for Go	true
inline-parameters.go.executablePath	Path to golang executable.	go
inline-parameters.go.hintBeforeParameter	Should the inlay hint appear before the parameter. If this is set to false the hint will appear after the parameter.	true
inline-parameters.go.showVariadicNumbers	Show the number of times a variadic parameter has been called	true
inline-parameters.go.suppressWhenArgumentMatchesName	If the value given to a parameter is the same as the parameter name, hide the parameter name	true
inline-parameters.java.enabled	Show inline parameters for Java	true
inline-parameters.java.hintBeforeParameter	Should the inlay hint appear before the parameter. If this is set to false the hint will appear after the parameter.	true
inline-parameters.java.showVariadicNumbers	Show the number of times a variadic parameter has been called	true
inline-parameters.java.suppressWhenArgumentMatchesName	If the value given to a parameter is the same as the parameter name, hide the parameter name	true
inline-parameters.lua.enabled	Show inline parameters for Lua	true
inline-parameters.lua.hintBeforeParameter	Should the inlay hint appear before the parameter. If this is set to false the hint will appear after the parameter.	true
inline-parameters.lua.suppressWhenArgumentMatchesName	If the value given to a parameter is the same as the parameter name, hide the parameter name	true
inline-parameters.php.enabled	Show inline parameters for PHP	true
inline-parameters.php.hintBeforeParameter	Should the inlay hint appear before the parameter. If this is set to false the hint will appear after the parameter.	true
inline-parameters.php.showDollarSign	Show the $ character before PHP parameter names	false
inline-parameters.php.showVariadicNumbers	Show the number of times a variadic parameter has been called	true
inline-parameters.php.suppressWhenArgumentMatchesName	If the value given to a parameter is the same as the parameter name, hide the parameter name	true
inline-parameters.python.enabled	Show inline parameters for Python	true
inline-parameters.python.executablePath	Path to python executable. Setting this overrides the default of using the same path as ms-python or the default shell path if ms-python is not installed.
inline-parameters.python.hintBeforeParameter	Should the inlay hint appear before the parameter. If this is set to false the hint will appear after the parameter.	true
inline-parameters.python.showVariadicNumbers	Show the number of times a variadic parameter has been called	true
inline-parameters.python.suppressWhenArgumentMatchesName	If the value given to a parameter is the same as the parameter name, hide the parameter name	true

Inlay Hint Settings

This extension utilizes the Inlay-Hints API provided by VSCode. Here are some additional settings provided by VSCode.

Name	Description	Default
editor.inlayHints.enabled	Enables Inlay Hints for the editor.	true
editor.inlayHints.fontFamily	Controls font family of inlay hints in the editor. When set to empty, the #editor.fontFamily# is used.	""
editor.inlayHints.fontSize	Controls font size of inlay hints in the editor. A default of 90% of #editor.fontSize# is used when the configured value is less than 5 or greater than the editor font size.	0

There are also several settings to enable Inlay Hints for both JavaScript and TypeScript. These settings are available in the following setting sections.

javascript.inlayHints typescript.inlayHints

Contributions

Additional language support is welcome as pull requests, and highly encouraged. You can see the source code to see how existing languages have been implemented.

Currently, the extension has 2 major steps that all language drivers must implement:

1. Parsing the source code of the currently active file (Using an AST library - AST Explorer can assist in navigating it) to retrieve a list of positions where annotations should be inserted.
2. Getting the name of the parameters to use as the annotations. Existing language drivers do this by triggering the hover providers for the function being called, and extracting the parameter names from the description.

Credits / Links

• Benjamin Lannon for the (no longer maintained) VSCode JS Annotations extension (where some AST parsing for the Javascript languages was borrowed from)
• Bobby Zrncev for the IntelliJ Parameter Hints extension which achieves the same for PHP
• jrieken
• Liam Hammett
• RichardLuo0
• VSCode's Extension Samples, which was a huge help to get started
• All Contributors

License

The MIT License (MIT). Please see the license file for more information.