Updating ParameterAST Type Definitions (Fixes #305)

Author: James Brundage

Types/ParameterAST/Alias.psd1

@@ -0,0 +1,11 @@
+@{
+    FriendlyName = "DisplayName"
+    ValueFromPipelineByPropertyName = "ByPropertyName"
+    VBN = "ByPropertyName"
+    VFPBN = "ByPropertyName"
+    ValueByName = "ByPropertyName"
+    VFP = "FromPipeline"
+    ValueFromPipeline = "FromPipeline"
+    ValueFromRemainingArguments = "FromUnbound"
+    ValueFromRemaining = "FromUnbound"
+}

Types/ParameterAST/get_ByPropertyName.ps1

@@ -0,0 +1,18 @@
+foreach ($attr in $this.Attributes) {
+    $reflectedType = $attr.TypeName.GetReflectionType()
+    if ($reflectedType -ne [Management.Automation.ParameterAttribute]) {
+        continue
+    }
+    foreach ($namedArgument in $attr.NamedArguments) {
+        if ($namedArgument.ArgumentName -ne 'ValueFromPipelineByPropertyName') {
+            continue            
+        }
+        if ($namedArgument.Argument -and $namedArgument.Argument.Value) {
+            return $true
+        } elseif (-not $namedArgument.Argument) {
+            return $true
+        }
+    }
+}
+
+return $false

Types/ParameterAST/get_DisplayName.ps1

@@ -0,0 +1,18 @@
+foreach ($attr in $this.Attributes) {
+    $reflectedType = $attr.TypeName.GetReflectionType()
+    if ($reflectedType -ne [Management.Automation.ParameterAttribute]) {
+        continue
+    }
+    foreach ($namedArgument in $attr.NamedArguments) {
+        if ($namedArgument.ArgumentName -ne 'ValueFromPipeline') {
+            continue
+        }
+        if ($namedArgument.Argument -and $namedArgument.Argument.Value) {
+            return $true
+        } elseif (-not $namedArgument.Argument) {
+            return $true
+        }    
+    }
+}
+
+return $false

Types/ParameterAST/get_FromPipeline.ps1

@@ -0,0 +1,28 @@
+$metadata = [Ordered]@{}
+
+foreach ($attr in $this.Attributes) {
+    $reflectedType = $attr.TypeName.GetReflectionType()
+    if ($reflectedType -ne [Reflection.AssemblyMetadataAttribute]) {
+        continue
+    }
+    $key, $value =
+        foreach ($positionalParameter in $attr.PositionalArguments) {
+            $positionalParameter.Value
+        }
+
+    foreach ($namedArgument in $attr.NamedArguments) {
+        if ($namedArgument.ArgumentName -eq 'Key') {
+            $key = $namedArgument.Argument.Value
+        }
+        elseif ($namedArgument.ArgumentName -eq 'Value') {
+            $value = $namedArgument.Argument.Value
+        }
+    }
+    if (-not $metadata[$key]) {
+        $metadata[$key] = $value
+    } else {
+        $metadata[$key] = @($metadata[$key]) + $value
+    }
+}
+
+return $metadata

Types/ParameterAST/get_FromUnbound.ps1

@@ -0,0 +1,17 @@
+$parameterSetNames = @(foreach ($attr in $this.Attributes) {
+    $reflectedType = $attr.TypeName.GetReflectionType()
+    if ($reflectedType -ne [Management.Automation.ParameterAttribute]) {
+        continue
+    }
+    foreach ($namedArgument in $attr.NamedArguments) {
+        if ($namedArgument.ArgumentName -eq 'ParameterSetName') {
+            $namedArgument.Argument.Value
+        }
+    }
+})
+
+if ($parameterSetNames) {
+    $parameterSetNames -as [string[]]
+} else {
+    "__AllParameterSets" -as [string[]]
+}

Types/ParameterAST/get_Metadata.ps1

@@ -0,0 +1,21 @@
+$positions = @(
+:nextAttribute foreach ($attr in $this.Attributes) {
+    $reflectedType = $attr.TypeName.GetReflectionType()
+    if ($reflectedType -ne [Management.Automation.ParameterAttribute]) {
+        continue
+    }
+    foreach ($namedArgument in $attr.NamedArguments) {
+        if ($namedArgument.ArgumentName -eq 'Position') {
+            $namedArgument.Argument.Value
+            continue nextAttribute
+        }
+    }
+})
+
+if ($positions.Length -gt 1) {
+    $positions -as [int[]]
+} elseif ($positions) {
+    $positions[0]
+} else {
+    $null
+}