Private/Metrics/Measure-FunctionTrapCatchCodePath.ps1
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Function Measure-FunctionTrapCatchCodePath { <# .SYNOPSIS Gets the number of additional code paths due to Trap statements and Catch clauses in Try statements. .DESCRIPTION Gets the number of additional code paths due to Trap statements and Catch clauses in Try statements, in the specified function definition. .PARAMETER FunctionDefinition To specify the function definition to analyze. .EXAMPLE PS C:\> Measure-FunctionTrapCatchCodePath -FunctionDefinition $MyFunctionAst Gets the number of additional code paths due to Trap statements and Catch clauses in Try statements, in the specified function definition. .OUTPUTS System.Int32 .NOTES #> [CmdletBinding()] [OutputType([System.Int32])] Param ( [Parameter(Position=0, Mandatory)] [System.Management.Automation.Language.FunctionDefinitionAst]$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) $TrapStatements = $FunctionAst.FindAll({ $args[0] -is [System.Management.Automation.Language.TrapStatementAst] }, $True) $CatchClauses = $FunctionAst.FindAll({ $args[0] -is [System.Management.Automation.Language.CatchClauseAst] }, $True) [int]$ErrorHandlingCodePaths = $TrapStatements.Count + $CatchClauses.Count return $ErrorHandlingCodePaths } |