Fix a few build warnings (#56)

Author: SeeminglyScience

src/ClassExplorer/ClassExplorer.csproj

@@ -7,6 +7,8 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Nullable>enable</Nullable>
     <ResXGenerator_NullForgivingOperators>true</ResXGenerator_NullForgivingOperators>
+    <!-- Some AssemblyName properties are depreciated, we don't actually depend on them though. -->
+    <NoWarn>$(NoWarn);SYSLIB0037</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>

src/ClassExplorer/ReflectionCache.cs

@@ -37,13 +37,19 @@ public static string[] GetUsingNamespacesFromTLS()
 
         if (GetExecutionContextFromTLSMethod is null) return null;
 
-        PropertyInfo? getEngineSessionState = ExecutionContextType?.GetProperty("EngineSessionState", flags);
+        MethodInfo? getEngineSessionState = ExecutionContextType
+            ?.GetProperty("EngineSessionState", flags)
+            ?.GetGetMethod(nonPublic: true);
         if (getEngineSessionState is null) return null;
 
-        PropertyInfo? currentScope = getEngineSessionState.GetReturnType()?.GetProperty("CurrentScope", flags);
+        MethodInfo? currentScope = getEngineSessionState?.ReturnType
+            ?.GetProperty("CurrentScope", flags)
+            ?.GetGetMethod(nonPublic: true);
         if (currentScope is null) return null;
 
-        PropertyInfo? typeRes = currentScope.GetReturnType()?.GetProperty("TypeResolutionState", flags);
+        MethodInfo? typeRes = currentScope?.ReturnType
+            ?.GetProperty("TypeResolutionState", flags)
+            ?.GetGetMethod(nonPublic: true);
         if (typeRes is null) return null;
 
         FieldInfo? namespaces = typeRes.GetReturnType()?.GetField("namespaces", flags);
@@ -56,9 +62,9 @@ public static string[] GetUsingNamespacesFromTLS()
                     Expression.Call(
                         Expression.Call(
                             Expression.Call(GetExecutionContextFromTLSMethod),
-                            getEngineSessionState.GetGetMethod(nonPublic: true)),
-                        currentScope.GetGetMethod(nonPublic: true)),
-                    typeRes.GetGetMethod(nonPublic: true)),
+                            getEngineSessionState!),
+                        currentScope!),
+                    typeRes),
                 namespaces),
             "GetUsingNamespacesDynamically",
             [])

src/ClassExplorer/SignatureWriter.cs

@@ -1815,6 +1815,9 @@ public SignatureWriter Member(PropertyInfo property)
             Modifiers(modifiersMethod);
         }
 
+        Poly.Assert(name is not null);
+        Poly.Assert(propertyParameter is not null);
+
         TypeInfo(propertyParameter).Space();
         if (isExplicitImplementation)
         {
@@ -1885,6 +1888,7 @@ public SignatureWriter Member(EventInfo eventInfo)
             eventParameter = removeMethod!.GetParameters().FirstOrDefault();
         }
 
+        Poly.Assert(eventParameter is not null);
         Modifiers(modifiersMethod).Keyword("event").Space().TypeInfo(eventParameter).Space();
         MemberName(eventInfo.Name).Space();
         OpenCurly().Space();

src/ClassExplorer/Signatures/FullMethodSignature.cs

@@ -18,7 +18,7 @@ public override bool IsMatch(MemberInfo subject)
 
         if (subject is ConstructorInfo ctor)
         {
-            if (!ReturnType.IsMatch(ctor.ReflectedType))
+            if (ctor.ReflectedType is null || !ReturnType.IsMatch(ctor.ReflectedType))
             {
                 return false;
             }

src/ClassExplorer/TypeSearch.cs

@@ -142,7 +142,7 @@ protected override void InitializeOtherFilters(List<Filter<Type>> filters, Signa
             {
                 filters.AddFilter(
                     StringMatcher.CreateRegex(_options.FullName),
-                    static (type, matcher) => matcher.IsMatch(type.FullName));
+                    static (type, matcher) => matcher.IsMatch(type.FullName ?? ""));
             }
             else
             {