ScriptBlock/ScriptBlock.ps1

#region Copyright & License

# Copyright © 2012 - 2020 François Chabot
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#endregion

using namespace System.Management.Automation.Internal
using namespace System.Runtime.Serialization

Set-StrictMode -Version Latest

function Convert-ScriptBlockParametersToDynamicParameters {
    [CmdletBinding()]
    [OutputType([System.Management.Automation.RuntimeDefinedParameterDictionary])]
    param(
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [scriptblock]
        $ScriptBlock
    )
    begin {
        # https://stackoverflow.com/questions/26910789/is-it-possible-to-reuse-a-param-block-across-multiple-functions
        $commonParameterNames = [FormatterServices]::GetUninitializedObject([CommonParameters]) |
            Get-Member -MemberType Properties |
            Select-Object -ExpandProperty Name
        $dynamicParameters = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary
    }
    process {
        $ScriptBlock.Ast.ParamBlock | Select-Object -ExpandProperty Parameters |
        Where-Object -FilterScript { $commonParameterNames -notcontains $_.Name.VariablePath.UserPath } |
        ForEach-Object -Process {
            $paramName = $_.Name.VariablePath.UserPath
            $paramAttributes = New-Object System.Collections.ObjectModel.Collection[System.Attribute]
            $_.Attributes | ForEach-Object -Process {
                $attributeType = Invoke-Expression -Command "[$($_.TypeName.FullName)]"
                if ([System.Management.Automation.Internal.CmdletMetadataAttribute].IsAssignableFrom($attributeType)) {
                    $attribute = New-Object -TypeName $attributeType.FullName -ArgumentList @($_.PositionalArguments | ForEach-Object Value)
                    $_.NamedArguments | ForEach-Object -Process {
                        $attribute.($_.ArgumentName) = Invoke-Expression -Command ($_.Argument.Extent.Text)
                    }
                    $paramAttributes.Add($attribute)
                }
            }
            $param = New-Object System.Management.Automation.RuntimeDefinedParameter $paramName, $_.StaticType, $paramAttributes
            $dynamicParameters.Add($paramName, $param)
        }
    }
    end {
        $dynamicParameters
    }
}

function Invoke-ScriptBlock {
    [CmdletBinding()]
    [OutputType([void])]
    param(
        [Parameter(Mandatory = $true)]
        [ValidateNotNull()]
        [scriptblock]
        $ScriptBlock,

        [Parameter(Mandatory = $true)]
        [ValidateNotNull()]
        [hashtable]
        $Parameters
    )
    begin {
        Resolve-ActionPreference -Cmdlet $PSCmdlet -SessionState $ExecutionContext.SessionState
    }
    process {
        $expectedParameters = @( $ScriptBlock.Ast.ParamBlock | Select-Object -ExpandProperty Parameters | ForEach-Object -Process { $_.Name.VariablePath.UserPath } )
        $unexpectedParameters = @( $Parameters.Keys | Where-Object -FilterScript { $_ -notin $expectedParameters } )
        $unexpectedParameters | ForEach-Object -Process { $Parameters.Remove($_) | Out-Null }
        & $ScriptBlock @Parameters
    }
}

# SIG # Begin signature block
# MIII0QYJKoZIhvcNAQcCoIIIwjCCCL4CAQExCzAJBgUrDgMCGgUAMGkGCisGAQQB
# gjcCAQSgWzBZMDQGCisGAQQBgjcCAR4wJgIDAQAABBAfzDtgWUsITrck0sYpfvNR
# AgEAAgEAAgEAAgEAAgEAMCEwCQYFKw4DAhoFAAQU/K4cqecHe3x8o02X03RVU3et
# hRqgggVMMIIFSDCCAzCgAwIBAgIJAJkr3mJdTBkUMA0GCSqGSIb3DQEBCwUAMEEx
# PzA9BgNVBAMeNgBpAGMAcgBhAGYAdABzAG8AZgB0AHcAYQByAGUAQABzAHQAYQB0
# AGUAbABlAHMAcwAuAGIAZTAeFw0yMTA2MjUxNDEyMjNaFw00MTA2MjAxNDEyMjNa
# MEExPzA9BgNVBAMeNgBpAGMAcgBhAGYAdABzAG8AZgB0AHcAYQByAGUAQABzAHQA
# YQB0AGUAbABlAHMAcwAuAGIAZTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoC
# ggIBAOeqdUHBv7sxSeX3aj6yPKj7PAvs8izpVXjyEBl5aR8mQneVcXuF53AH7EW1
# 6E5p4+Az5pJPGUD5c3tXhiGMF7vgLhQjO6hlaVBRIqiIYHikNLwMNy6YBMc/QQYM
# rPhqHEFsZ53dkBIIj3M8e3kFcTFA09n25yDtTPDab4nd9yUhc9Qc8+nfpIzfYsoP
# 1pZ3nCzhw6hN2/44v1dkQrG3dRYwt+px65p6NPNZWEJpt4VCJjIFh+lBYJdxm9d4
# X/rAnlHIkbv7liOavWDzgHVabS3hdAWtcDmynm+7+FcZDFqPWNCl3e4SS7xe4s/R
# CKFKA0IsfKkSk9YJlLgeSQIEXUOOWXJAGaLqnRD8xWLZsc4Oi9GZg7XV1mv/S88c
# oztXnwtAN3OOlRKBh2QbomMgxeMO0GvsLE/cq5Q/YKAoz+KGr/7LcZq9jzQ8IPus
# ZvWLeDXmxPiwJjpZc1koLgfGIEX2NStQTT3QmacWr9thrWcKvI+4uBmI4exS9B4a
# R3nV91w5EY+2RoYsHqej9LWwNamO96+jMX9pxprTX+EkLUuMAikw/po8sBC9MUUn
# 5pMWmUv7DCtQOLGGBDDMMMkn4ZcjpCEEdPGHRKfqNnD27ssGtDjiNzfQrsm67toU
# bBwUF+gyJq/YckWquYJhA9ZOFWEADuIwGnsOzsoRvuQyY+p9AgMBAAGjQzBBMA4G
# A1UdDwEB/wQEAwIHgDAWBgNVHSUBAf8EDDAKBggrBgEFBQcDAzAXBgNVHREEEDAO
# ggxzdGF0ZWxlc3MuYmUwDQYJKoZIhvcNAQELBQADggIBACithYM3qckZRc9+Xbfu
# a6gWr3HwjrW+FHKgjfrcOm8ZnLVapb9xFqsqrRQqd3RXWQDINEGrtI2rSfrzyfoK
# UiTgldIfQNP1ZcGY229d++90t3hdo2mlt05hjYlbMENloJHpsEP0vQZmwOcEimCT
# ex1pymYM+P9pj3j8UD1PT1eIZot6or8fBRl63UybyDSrM7L4UOkkAOniKxWy5pW6
# 6duS8SR+SZpr3Bv44NyXPj0Nv+MIpLmsLrd7XPBFmnGxzY01ZO9vzi9KEhM2wT5i
# jPqHDNOvfPiADtAa+EyUBzdJiqy9heCz/TMZQgMWGwtfqJNxWZmsHcha2anW4Qt+
# mzrLO4GojWoVog9uVSAq+l0a+YQsd1u1kUmm4vgZCFyUA+lEp4LkI7ca2VBHkLPD
# w+u2DoDMRiqFPZjO7BCKjGc0jj9B/qGR3JVt+tqDdB621xXf2YGF2oFvxZQ/keGt
# 0ujfJ+JwN3nCulDAA4773q6KUnfykyrvAgITNbRJL6TngeRKtw9VIJBPxzqMzLpV
# 5ggXNituwLaD1CCBJ1oo9DZHpL9gplXp1wGrelJOTiJhh+pdNsPtRH7CrranWa5h
# LFLuigqin0eewQ5giJ1VaiBVEseOmiZog+27UpFIv40aDzgGL3YxB/Mu0ojwrQtp
# WLmqJCmWnR5qxOm0yK+zNWe0MYIC7zCCAusCAQEwTjBBMT8wPQYDVQQDHjYAaQBj
# AHIAYQBmAHQAcwBvAGYAdAB3AGEAcgBlAEAAcwB0AGEAdABlAGwAZQBzAHMALgBi
# AGUCCQCZK95iXUwZFDAJBgUrDgMCGgUAoHgwGAYKKwYBBAGCNwIBDDEKMAigAoAA
# oQKAADAZBgkqhkiG9w0BCQMxDAYKKwYBBAGCNwIBBDAcBgorBgEEAYI3AgELMQ4w
# DAYKKwYBBAGCNwIBFTAjBgkqhkiG9w0BCQQxFgQUGh9X5FKKsux4RTi2y8AQv5o5
# 9GcwDQYJKoZIhvcNAQEBBQAEggIAiRmbuJzV2/yW5bnfapOeRf19qjwIUr17hXyD
# ObWeWu8WH24bwhgOGNuYU+w/H7srTiMI3nvCHxqs4Q14IJpkVUmUymPoM4fQ/wyw
# QpYAyyzySdtghL4yeakFGq55eEyvjOJFhWk16qAe9exJgw+ZScy2g9SROG0QtBRc
# TVM/5KgvKWNfTjMcoNxryOOsXcc8NYCeAyjOP9k6PW6bAExRoGCoRG38bSr/wZMt
# iCNYPRmszrnshNizcCZsiOJIOCXkae2D0hPPBTRcWugg9ZQ+aVItR89xV+1OcYoR
# pvrpTGIGLyEzNo0udLTdB1RhQ8ZA0O9Wi4URPbWVUgkQfbwxNLA18zxVkPXodUZ7
# h9c/v5z7lYOXq46bS6peVXLS73RfXuiPRQ7iRo9SS5+WOJr5a8uxz9kPU7e/SVdk
# kLNHN2WC4o/ub4x4DhbGh4u5l+gAmbwb+JHdu1GbSOiUYKFOeiYx5Aj8N1DuNw+9
# y7zwhYv/hlRhtJqyHWqUWNAmzH7Jo2YqQ5zBMj4VdBj7i7nKmWerg86Bmg8AbZ4z
# Fl/nwHS6IltyhXdNa8FoOIqF/+WpFJiyQAfqVlSSOW2GnfBlQzEe1PqA3vHg6IT9
# DSdcYWDneES+b+MYZvB4CwXskPlD/BYiFU+PVLbPL2ziGk1idhd2uN+vNOCgvbkz
# CNDobrM=
# SIG # End signature block