New system syntax, along with a better way to create queries:

SYSTEMS:
Cannot create multiple command structs, instead the system introduce the Cmd field, and you can add new commands in it by adding interfaces to the system itself.
To create a query, use RequireQuery(...) or OptionalQuery(...); the generator will automatically replace the method call with an optimized version.
QUERIES:
With<T> was renamed to All<T>
Iterating on a query will not give a tuple anymore; instead you'll be presented with an iteration struct with all components. In the future it will be even more optimized with the generator.

revecs.Generator/CommandGenerator.cs

@@ -129,10 +129,11 @@ void Usings()
         {
             sb.Append(@"using revecs.Core;
 using revecs.Utility;
-using revecs.Query;
+using revecs.Querying;
 using revecs.Systems;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.ComponentModel;
 using revtask.Core;
 using revtask.Helpers;
 
@@ -181,6 +182,8 @@ void BeginCommand()
 
             //var interfaces = source.Header.Select(t => t.GetTypeName());*/
             //sb.AppendLine($"    partial struct {structName} : {string.Join(",\n            ", interfaces)}\n    {{");
+            if (structName.StartsWith("__"))
+                sb.Append("    [EditorBrowsable(EditorBrowsableState.Never)]");
             sb.AppendLine($"    partial struct {structName}\n    {{");
         }
 
@@ -235,7 +238,7 @@ void Init()
 
             sb.AppendLine($@"        public readonly RevolutionWorld World;
 
-        public {source.Name}(RevolutionWorld world)
+        public {source.StructureName ?? source.Name}(RevolutionWorld world)
         {{
             World = world;
 
@@ -319,7 +322,7 @@ public void AddDependencyReader(IJobRunner runner, JobRequest request)
         EndNamespace();
 
         var fileName = $"{(source.Parent == null ? "" : $"{source.Parent.Name}.")}{source.Name}";
-        Context.AddSource($"{Path.GetFileNameWithoutExtension(source.FilePath)}.{fileName}", "#pragma warning disable\n" + sb.ToString());
+        Context.AddSource($"COMMAND.{Path.GetFileNameWithoutExtension(source.FilePath)}.{fileName}", "#pragma warning disable\n" + sb.ToString());
     }
 
     private void CreateCommands()
@@ -340,9 +343,11 @@ private void CreateCommands()
 
                 var symbol = (INamedTypeSymbol) semanticModel.GetDeclaredSymbol(declaredStruct);
 
-                // is query
+                // is system (cancel if found)
+                var systemInterface = symbol!.AllInterfaces.FirstOrDefault(i => i.Name == "IRevolutionSystem");
+                // is command
                 var commandInterface = symbol!.AllInterfaces.FirstOrDefault(i => i.Name == "IRevolutionCommand");
-                if (commandInterface != null)
+                if (systemInterface == null && commandInterface != null)
                 {
                     Log(0, "Found Command: " + symbol.GetTypeName() + ", File: " + tree.FilePath);
 

revecs.Generator/ComponentGenerator.cs

@@ -46,10 +46,9 @@ public string GetInit(string fieldName, string componentType, string worldName)
                 .Replace("[componentType]", componentType, StringComparison.InvariantCultureIgnoreCase);
         }
 
-        public string GetAccess(string valueName, string fieldName, string entityName, string access)
+        public string GetAccess(string fieldName, string entityName, string access)
         {
             return Access
-                .Replace("[value]", valueName, StringComparison.InvariantCultureIgnoreCase)
                 .Replace("[field]", fieldName, StringComparison.InvariantCultureIgnoreCase)
                 .Replace("[access]", access, StringComparison.InvariantCultureIgnoreCase)
                 .Replace("[entity]", entityName, StringComparison.InvariantCultureIgnoreCase);
@@ -266,7 +265,7 @@ void Usings()
         {
             sb.Append(@"using revecs.Core;
 using revecs.Utility;
-using revecs.Query;
+using revecs.Querying;
 using revecs.Systems;
 using System;
 using System.Runtime.CompilerServices;
@@ -377,7 +376,7 @@ void Body()
         var fileName = $"{(source.Parent == null ? "" : $"{source.Parent.Name}.")}{source.Name}";
         FinalMap[fileName] = sb.ToString();
 
-        Context.AddSource($"{Path.GetFileNameWithoutExtension(source.FilePath)}.{fileName}",
+        Context.AddSource($"COMPONENT.{Path.GetFileNameWithoutExtension(source.FilePath)}.{fileName}",
             "#pragma warning disable\n" + sb.ToString());
     }
 

revecs.Generator/Generator.cs

@@ -19,7 +19,7 @@ public void Execute(GeneratorExecutionContext context)
         // retrieve the populated receiver
         if (!(context.SyntaxContextReceiver is SyntaxReceiver receiver))
             return;
-
+        
         var sw = new Stopwatch();
         void start() => sw.Restart();