initial Commit

Private/Invoke-ConfigurationDataExpression.ps1

@@ -0,0 +1,38 @@
+function Invoke-ConfigurationDataExpression {
+    [CmdletBinding()]
+    Param(
+        [Parameter(Mandatory=$true)]
+        [string]
+        $Expression,
+
+        [Parameter(Mandatory=$true)]
+        $Context
+    )
+
+    $Expression = $Expression.Trim()
+
+    if($Expression -match "^'(.*)'$"){
+        return $Matches[1]
+    }
+
+    if($Expression -match "^-?\d+$"){
+        return [int]$Expression
+    }
+
+    if($Expression -match "^(?i:true|false)$"){
+        return [bool]::Parse($Expression)
+    }
+
+    if($Expression -notmatch "^([A-Za-z][A-Za-z0-9]*)\((.*)\)$"){
+        throw "Invalid configuration data expression [$Expression]."
+    }
+
+    $FunctionName = $Matches[1]
+    $ArgumentText = $Matches[2]
+    $Arguments = @()
+    foreach($Argument in @(Split-ConfigurationDataExpressionArguments -ArgumentText $ArgumentText)){
+        $Arguments += ,(Invoke-ConfigurationDataExpressionArgument -Argument $Argument -Context $Context)
+    }
+
+    return Invoke-ConfigurationDataExpressionFunction -Name $FunctionName -Arguments $Arguments -Context $Context
+}