initial Commit

Private/Resolve-ConfigurationDataVariable.ps1

@@ -0,0 +1,32 @@
+function Resolve-ConfigurationDataVariable {
+    [CmdletBinding()]
+    Param(
+        [Parameter(Mandatory=$true)]
+        [string]
+        $Name,
+
+        [Parameter(Mandatory=$true)]
+        $Context
+    )
+
+    if($Context.Variables.ContainsKey($Name)){
+        return $Context.Variables[$Name]
+    }
+
+    if(-not $Context.VariableDefinitions.ContainsKey($Name)){
+        throw "Variable [$Name] is not defined."
+    }
+
+    if($Context.ResolvingVariables.ContainsKey($Name)){
+        throw "Circular variable reference detected for variable [$Name]."
+    }
+
+    $Context.ResolvingVariables[$Name] = $true
+    try {
+        $Resolved = Resolve-ConfigurationDataValue -Value $Context.VariableDefinitions[$Name] -Context $Context
+        $Context.Variables[$Name] = $Resolved
+        return $Resolved
+    } finally {
+        $Context.ResolvingVariables.Remove($Name)
+    }
+}