Private/Metrics/Measure-FunctionForCodePath.ps1
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Function Measure-FunctionForCodePath { <# .SYNOPSIS Gets the number of additional code paths due to For loops. .DESCRIPTION Gets the number of additional code paths due to For loops (where the For statement contains a condition), in the specified function definition. .PARAMETER FunctionDefinition To specify the function definition to analyze. .EXAMPLE PS C:\> Measure-FunctionForCodePath -FunctionDefinition $MyFunctionAst Gets the number of additional code paths due to for loops in the specified function definition. .OUTPUTS System.Int32 .NOTES #> [CmdletBinding()] [OutputType([System.Int32])] Param ( [Parameter(Position=0, Mandatory)] [System.Management.Automation.Language.FunctionDefinitionAst]$FunctionDefinition ) $FunctionText = $FunctionDefinition.Extent.Text # Converting the function definition to a generic ScriptBlockAst because the FindAll method of FunctionDefinitionAst object work strangely $FunctionAst = [System.Management.Automation.Language.Parser]::ParseInput($FunctionText, [ref]$null, [ref]$null) $ForStatements = $FunctionAst.FindAll({ $args[0] -is [System.Management.Automation.Language.ForStatementAst] }, $True) # Taking into account the rare cases where For statements don't contain a condition $ConditionalForStatements = $ForStatements | Where-Object Condition If ( -not($ConditionalForStatements) ) { return [int]0 } return $ConditionalForStatements.Count } |