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ExtensionMethod\n\nCreation of ps1xml file dedicated to the extension methods contained in an assembly.\nFrom an idea of [Bart De Smet's](http://bartdesmet.net/blogs/bart/archive/2007/09/06/extension-methods-in-windows-powershell.aspx)\n\nTo install this module :\n```Powershell\n\n$PSGalleryPublishUri = 'https://www.myget.org/F/ottomatt/api/v2/package'\n$PSGallerySourceUri = 'https://www.myget.org/F/ottomatt/api/v2'\n\nRegister-PSRepository -Name OttoMatt -SourceLocation $PSGallerySourceUri -PublishLocation $PSGalleryPublishUri #-InstallationPolicy Trusted\nInstall-Module ExtensionMethod -Repository OttoMatt\n```\n\nNote : this module depends on the [UncommonSense.PowerShell.TypeData](https://www.powershellgallery.com/packages/UncommonSense.PowerShell.TypeData) module, available on PSGallery.\n\nThis code return all types containing extension methods :\n\n```Powershell\n [psobject].Assembly.ExportedTypes|Find-ExtensionMethod -ExcludeGeneric|%  {$_.ToString()}\n\n#System.Management.Automation.Language.TokenFlags GetTraits(System.Management.Automation.Language.TokenKind)\n#Boolean HasTrait(System.Management.Automation.Language.TokenKind, System.Management.Automation.Language.TokenFlags)\n#System.String Text(System.Management.Automation.Language.TokenKind)\n```\n\nBy default Powershell can not use them, but with [ETS](https://github.com/MicrosoftDocs/PowerShell-Docs/tree/main/reference/docs-conceptual/developer/ets) it is possible to make extension methods available.\n\nThe goal is to adapt each method  :\n\n```xml\n\u003c?xml version=\"1.0\" encoding=\"utf-8\"?\u003e\n\u003cTypes\u003e\n  \u003cType\u003e\n    \u003cName\u003eSystem.Management.Automation.Language.TokenKind\u003c/Name\u003e\n    \u003cMembers\u003e\n      \u003cScriptMethod\u003e\n         \u003cName\u003eHasTrait\u003c/Name\u003e\n       \u003cScript\u003e\n         switch ($args.Count) {\n            1 { [System.Management.Automation.Language.TokenTraits]::HasTrait($this,$args[0])}\n\n            default { throw \"No overload for 'HasTrait' takes the specified number of parameters ($($args.Count)).\" }\n         }\u003c/Script\u003e\n      \u003c/ScriptMethod\u003e\n      \u003cScriptMethod\u003e\n        \u003cName\u003eGetTrait\u003c/Name\u003e\n             ...\n```\n\nThus it is possible to write :\n\n```Powershell\n$code.Ast.EndBlock.BlockKind.HasTrait('MemberName')\n```\n\nThe **New-ExtendedTypeData** function create one or many files from the extension methods contained in an assembly\n\n```Powershell\nAdd-Type -Path $AssemblyPath -Pass|\n New-ExtendedTypeData -Path c:\\temp\\TestPs1Xml\\All.ps1xml -All\n\nWARNING: Excluded method : System.Boolean.ToString()\nWARNING: Excluded method : System.Object.ToString()\nWARNING: Excluded method : System.Char.ToString()\n```\n\n**NOTE**:\nThe ToString() method can be generate recursiv call, they are excluded.\nThe generic methods and those returning a type Interface are excluded.\n\nThe _-All_ parameter group all definitions to a single file :\n\n```Powershell\ndir  -Path c:\\temp\\TestPs1Xml\n\n    Directory: C:\\temp\\TestPs1Xml\n\nMode                LastWriteTime         Length Name\n----                -------------         ------ ----\n-a----       16/02/2017     12:57         269651 All.ps1xml\n```\n\nThe absence of the _-All_ parameter creates a file by type, the filename is the name of the corresponding type :\n\n```Powershell\nAdd-Type -Path $AssemblyPath -Pass|\n New-ExtendedTypeData -Path c:\\temp\\TestPs1Xml\\All.ps1xml\n\ndir  -Path c:\\temp\\TestPs1Xml|more\n\n    Directory: C:\\temp\\TestPs1Xml\n\nMode                LastWriteTime         Length Name\n----                -------------         ------ ----\n-a----       16/02/2017     12:57         269651 All.ps1xml\n-a----       16/02/2017     13:07           5636 System.Array.ps1xml\n-a----       16/02/2017     13:07           1098 System.Boolean.ps1xml\n-a----       16/02/2017     13:07           1122 System.Byte.ps1xml\n-a----       16/02/2017     13:07           4404 System.Byte.Array.ps1xml\n-a----       16/02/2017     13:07           8636 System.Char.ps1xml\n-a----       16/02/2017     13:07            509 System.Collections.Specialized.NameValueCollection.ps1xml\n-a----       16/02/2017     13:07            864 System.Data.Common.DbCommand.ps1xml\n-a----       16/02/2017     13:07           3736 System.Data.Common.DbConnection.ps1xml\n...\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FLaurentDardenne%2FExtensionMethod","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FLaurentDardenne%2FExtensionMethod","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FLaurentDardenne%2FExtensionMethod/lists"}