Code quality updates (#2267)

.editorconfig

@@ -22,8 +22,12 @@ indent_size = 2
 
 # Code style defaults
 csharp_using_directive_placement = outside_namespace:suggestion
+csharp_style_implicit_object_creation_when_type_is_apparent = true:suggestion
+csharp_preferred_modifier_order.severity = suggestion
 dotnet_sort_system_directives_first = true
 dotnet_style_readonly_field = true:suggestion
+dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
+dotnet_style_prefer_simplified_interpolation = true:suggestion
 
 # License header
 file_header_template = Copyright (c) Microsoft Corporation.\nLicensed under the MIT License.
@@ -42,9 +46,17 @@ dotnet_style_prefer_conditional_expression_over_assignment = true:suggestion
 dotnet_style_prefer_conditional_expression_over_return = true:suggestion
 csharp_prefer_simple_default_expression = true:suggestion
 
+# Pattern matching
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_prefer_not_pattern = true:suggestion
+csharp_style_prefer_switch_expression = false:none
+csharp_style_prefer_pattern_matching = false:none
+
 # Prefer "var" everywhere
 csharp_style_var_for_built_in_types = true:suggestion
 csharp_style_var_when_type_is_apparent = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
 csharp_style_var_elsewhere = true:suggestion
 
 # Define the 'private_fields' symbol group:

src/PSRule.Rules.Azure.BuildTool/Models.cs

@@ -78,7 +78,7 @@ namespace PSRule.Rules.Azure.BuildTool
         {
             get
             {
-                return _Expanded.ZoneMappings == null ? null : _Expanded.ZoneMappings.Select(x => new AvailabilityZoneMappingMin { Location = x.Location, Zones = x.Zones }).ToArray();
+                return _Expanded.ZoneMappings?.Select(x => new AvailabilityZoneMappingMin { Location = x.Location, Zones = x.Zones }).ToArray();
             }
         }
     }

src/PSRule.Rules.Azure.BuildTool/Program.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace PSRule.Rules.Azure.BuildTool
 {
-    class Program
+    static class Program
     {
         /// <summary>
         /// Entry point for build tool.

src/PSRule.Rules.Azure/Common/EnvironmentHelper.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation.
+// Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
 using System;
@@ -7,7 +7,7 @@ namespace PSRule.Rules.Azure
 {
     internal sealed class EnvironmentHelper
     {
-        public static readonly EnvironmentHelper Default = new EnvironmentHelper();
+        public static readonly EnvironmentHelper Default = new();
 
         internal bool TryBool(string key, out bool value)
         {
@@ -15,7 +15,7 @@ namespace PSRule.Rules.Azure
             return TryVariable(key, out var variable) && TryParseBool(variable, out value);
         }
 
-        private bool TryVariable(string key, out string variable)
+        private static bool TryVariable(string key, out string variable)
         {
             variable = Environment.GetEnvironmentVariable(key);
             return variable != null;

src/PSRule.Rules.Azure/Configuration/DeploymentOption.cs

@@ -14,7 +14,7 @@ namespace PSRule.Rules.Azure.Configuration
     {
         private const string DEFAULT_NAME = "ps-rule-test-deployment";
 
-        internal readonly static DeploymentOption Default = new()
+        internal static readonly DeploymentOption Default = new()
         {
             Name = DEFAULT_NAME
         };

src/PSRule.Rules.Azure/Configuration/ManagementGroupOption.cs

@@ -22,7 +22,7 @@ namespace PSRule.Rules.Azure.Configuration
 
         private const string DEFAULT_TYPE = "/providers/Microsoft.Management/managementGroups";
 
-        internal readonly static ManagementGroupOption Default = new()
+        internal static readonly ManagementGroupOption Default = new()
         {
             Name = DEFAULT_NAME,
             Properties = new ManagementGroupProperties(DEFAULT_DISPLAYNAME, DEFAULT_TENANTID),

src/PSRule.Rules.Azure/Configuration/ParameterDefaultsOption.cs

@@ -14,7 +14,7 @@ namespace PSRule.Rules.Azure.Configuration
     [System.Diagnostics.CodeAnalysis.SuppressMessage("Naming", "CA1710:Identifiers should have correct suffix", Justification = "Not a generic dictionary.")]
     public sealed class ParameterDefaultsOption : IEquatable<ParameterDefaultsOption>, IDictionary<string, object>
     {
-        internal readonly static ParameterDefaultsOption Default = new();
+        internal static readonly ParameterDefaultsOption Default = new();
 
         private readonly Dictionary<string, object> _Defaults;
 

src/PSRule.Rules.Azure/Configuration/ResourceGroupOption.cs

@@ -24,7 +24,7 @@ namespace PSRule.Rules.Azure.Configuration
         private const string ID_PREFIX = "/subscriptions/";
         private const string RGID_PREFIX = "/resourceGroups/";
 
-        internal readonly static ResourceGroupOption Default = new()
+        internal static readonly ResourceGroupOption Default = new()
         {
             SubscriptionId = DEFAULT_SUBSCRIPTIONID,
             Name = DEFAULT_NAME,

src/PSRule.Rules.Azure/Configuration/SubscriptionOption.cs

@@ -20,7 +20,7 @@ namespace PSRule.Rules.Azure.Configuration
 
         private const string ID_PREFIX = "/subscriptions/";
 
-        internal readonly static SubscriptionOption Default = new()
+        internal static readonly SubscriptionOption Default = new()
         {
             SubscriptionId = DEFAULT_SUBSCRIPTIONID,
             TenantId = DEFAULT_TENANTID,

src/PSRule.Rules.Azure/Configuration/TenantOption.cs

@@ -18,7 +18,7 @@ namespace PSRule.Rules.Azure.Configuration
 
         private const string ID_PREFIX = "/tenants/";
 
-        internal readonly static TenantOption Default = new()
+        internal static readonly TenantOption Default = new()
         {
             CountryCode = DEFAULT_COUNTRYCODE,
             TenantId = DEFAULT_TENANTID,

src/PSRule.Rules.Azure/Data/Bicep/BicepHelper.cs

@@ -407,7 +407,7 @@ namespace PSRule.Rules.Azure.Data.Bicep
 
                 try
                 {
-                    using (var reader = new JsonTextReader(new StringReader(bicep.GetOutput())))
+                    using var reader = new JsonTextReader(new StringReader(bicep.GetOutput()));
                     return JObject.Load(reader);
                 }
                 catch (Exception e)

src/PSRule.Rules.Azure/Data/Policy/Exceptions.cs

@@ -132,6 +132,7 @@ namespace PSRule.Rules.Azure.Data.Policy
         /// Creates an empty condition exception based on an assignment and policy definition.
         /// </summary>
         /// <param name="message">The detail of the exception.</param>
+        /// <param name="sourceFile">The source file.</param>
         /// <param name="assignmentId">Specifies Id of the assignment the exception relates to.</param>
         /// <param name="policyDefinitionId">Specifies the Id of the policy definition the exception relates to.</param>
         internal PolicyDefinitionEmptyConditionException(string message, string sourceFile, string assignmentId, string policyDefinitionId)

src/PSRule.Rules.Azure/Data/ResourceLoader.cs

@@ -17,7 +17,7 @@ namespace PSRule.Rules.Azure.Data
         /// <summary>
         /// Create an instance of the resource loader.
         /// </summary>
-        internal protected ResourceLoader() { }
+        protected internal ResourceLoader() { }
 
         /// <summary>
         /// Get the content of a resource stream by name.

src/PSRule.Rules.Azure/Data/Template/ExpressionStream.cs

@@ -36,8 +36,8 @@ namespace PSRule.Rules.Azure.Data.Template
         private const char ParenthesesClose = ')';
         private const char BracketOpen = '[';
         private const char BracketClose = ']';
-        private readonly static char[] FunctionNameStopCharacter = new char[] { '(', ']', '[', ')', '\'', ' ', ',' };
-        private readonly static char[] PropertyStopCharacters = new char[] { '(', ']', '[', ',', ')', ' ', '\'', '.', '\r', '\n' };
+        private static readonly char[] FunctionNameStopCharacter = new char[] { '(', ']', '[', ')', '\'', ' ', ',' };
+        private static readonly char[] PropertyStopCharacters = new char[] { '(', ']', '[', ',', ')', ' ', '\'', '.', '\r', '\n' };
 
         internal ExpressionStream(string expression)
         {

src/PSRule.Rules.Azure/Data/Template/Functions.cs

@@ -36,7 +36,7 @@ namespace PSRule.Rules.Azure.Data.Template
         private const char SINGLE_QUOTE = '\'';
         private const char DOUBLE_QUOTE = '"';
 
-        internal readonly static IFunctionDescriptor[] Common = new IFunctionDescriptor[]
+        internal static readonly IFunctionDescriptor[] Common = new IFunctionDescriptor[]
         {
             // Array and object
             new FunctionDescriptor("array", Array),
@@ -168,7 +168,7 @@ namespace PSRule.Rules.Azure.Data.Template
         /// Functions specific to Azure Policy.
         /// See <seealso href="https://learn.microsoft.com/azure/governance/policy/concepts/definition-structure#policy-functions">Policy Functions</seealso>.
         /// </summary>
-        internal readonly static IFunctionDescriptor[] Policy = new IFunctionDescriptor[]
+        internal static readonly IFunctionDescriptor[] Policy = new IFunctionDescriptor[]
         {
             //new FunctionDescriptor("addDays", AddDays),
             //new FunctionDescriptor("field", Field),

src/PSRule.Rules.Azure/Data/Template/TemplateVisitor.cs

@@ -307,7 +307,7 @@ namespace PSRule.Rules.Azure.Data.Template
 
             public void UpdateResourceScope(JObject resource)
             {
-                if (!TryResourceScope(resource, out string scopeId) &&
+                if (!TryResourceScope(resource, out var scopeId) &&
                     !TryParentScope(resource, out scopeId))
                     return;
 
@@ -1152,8 +1152,7 @@ namespace PSRule.Rules.Azure.Data.Template
                     continue;
 
                 var r = ResourceInstance(context, instance, copyIndex);
-                if (symbol != null)
-                    symbol.Configure(r);
+                symbol?.Configure(r);
 
                 yield return r;
             }

src/PSRule.Rules.Azure/Pipeline/Output/JsonOutputWriter.cs

@@ -14,10 +14,8 @@ namespace PSRule.Rules.Azure.Pipeline.Output
 
         protected override string Serialize(object[] o)
         {
-            using (var stringWriter = new StringWriter())
-            {
-                using (var jsonTextWriter = new JsonCommentWriter(stringWriter))
-                {
+            using var stringWriter = new StringWriter();
+            using var jsonTextWriter = new JsonCommentWriter(stringWriter);
             var jsonSerializer = new JsonSerializer
             {
                 NullValueHandling = NullValueHandling.Ignore
@@ -32,5 +30,3 @@ namespace PSRule.Rules.Azure.Pipeline.Output
         }
     }
 }
-    }
-}

src/PSRule.Rules.Azure/Pipeline/PolicyAssignmentSource.cs

@@ -3,10 +3,20 @@
 
 namespace PSRule.Rules.Azure.Pipeline
 {
+    /// <summary>
+    /// A policy assignment source file.
+    /// </summary>
     public sealed class PolicyAssignmentSource
     {
+        /// <summary>
+        /// The assignment source file.
+        /// </summary>
         public string AssignmentFile { get; }
 
+        /// <summary>
+        /// Create an assignment instance.
+        /// </summary>
+        /// <param name="assignmentFile">The assignment source file.</param>
         public PolicyAssignmentSource(string assignmentFile)
         {
             AssignmentFile = assignmentFile;