enhancement: CSharp Parser Progress Bars (re #558)

Author: StartAutomating

Commands/Parsers/Parse-CSharp.ps1

@@ -30,23 +30,43 @@ function Parse.CSharp {
     [PSObject]    
     $Source
     )
-    begin {
+    begin {        
         if (-not ('Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree' -as [type])) {
             Add-Type -AssemblyName Microsoft.CodeAnalysis.CSharp
-        }    
+        }
+        $accumulate = [Collections.Queue]::new()
     }
     process {
+        $accumulate.Enqueue([Ordered]@{psParameterSet=$psCmdlet.ParameterSetName} + $PSBoundParameters)
+    }
+    end {
+        $count = 0
+        $total = $accumulate.Count -as [double]
+        if (-not $script:LastProgressID) { $script:LastProgressID = 1}
+        $script:LastProgressID++
         if (-not ('Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree' -as [type])) {
             return
         }
-        if ($Source -is [string]) {
-            [Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree]::ParseText($Source)
-        }
-        elseif ($Source -is [IO.FileInfo]) {
-            if ($Source.Extension -in '.cs', '.csx') {
-                [Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree]::ParseText([IO.File]::ReadAllText($Source), $null, $Source.Fullname)                
+        while ($accumulate.Count) {
+            $dequeue = $accumulate.Dequeue()
+            if ($total -gt 1) {
+                Write-Progress "Parsing PowerShell" " " -Id $script:LastProgressID -PercentComplete $(
+                    $count++
+                    [Math]::Min($count / $total, 1) * 100
+                )
+            }
+            foreach ($kv in $dequeue.GetEnumerator()) {
+                $ExecutionContext.SessionState.PSVariable.Set($kv.Key, $kv.Value)
+            }
+            if ($Source -is [string]) {
+                [Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree]::ParseText($Source)
+            }
+            elseif ($Source -is [IO.FileInfo]) {
+                if ($Source.Extension -in '.cs', '.csx') {
+                    [Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree]::ParseText([IO.File]::ReadAllText($Source), $null, $Source.Fullname)                
+                }
+                
             }
-            
         }
     }
 }