feat: Add global variable declarations

NewSource/Socordia.CodeAnalysis/Parsing/Parser.ParsePoints.cs

@@ -30,6 +30,7 @@ public void InitParsePoints()
 
         AddDeclarationParsePoint<FunctionDefinitionParser>(TokenType.Function);
         AddDeclarationParsePoint<RulesForDeclarationParser>(TokenType.Rules);
+        AddDeclarationParsePoint<VariableStatementParser>(TokenType.Let);
 
         /*  AddDeclarationParsePoint<ConstructorDeclarationParser>(TokenType.Constructor);
           AddDeclarationParsePoint<DestructorDeclaration>(TokenType.Destructor);

NewSource/SocordiaC/Compilation/Listeners/CollectFunctionsListener.cs

@@ -22,7 +22,7 @@ protected override void ListenToNode(Driver context, FunctionDefinition node)
 
         var returnType = GetReturnType(node, type);
         var method = type.CreateMethod(node.Signature.Name.Name,
-            returnType, [..parameters], attrs);
+            returnType, [.. parameters], attrs);
 
         if (!node.Modifiers.Contains(Modifier.Extern))
         {

NewSource/SocordiaC/Compilation/Listeners/CollectGlobalVariablesListener.cs

@@ -0,0 +1,18 @@
+namespace SocordiaC.Compilation.Listeners;
+
+public class CollectGlobalVariablesListener : Listeners<Driver, AstNode, VariableStatement>
+{
+    protected override void ListenToNode(Driver context, VariableStatement node)
+    {
+        var type = context.GetFunctionType(context.GetNamespaceOf(node));
+        var varType = Utils.GetTypeFromNode(node.Type, type);
+        var field = type.CreateField(node.Name, varType, FieldAttributes.Public | FieldAttributes.Static);
+
+        Mappings.Variables.Add(node, field);
+    }
+
+    protected override bool ShouldListenToChildren(Driver context, VariableStatement node)
+    {
+        return false;
+    }
+}

NewSource/SocordiaC/Stages/CollectTypesStage.cs

@@ -26,10 +26,14 @@ public async Task<Driver> HandleAsync(Driver context, Func<Driver, Task<Driver>>
         }
 
         var functionCollector = new CollectFunctionsListener();
+        var globalVarListener = new CollectGlobalVariablesListener();
         foreach (var tree in context.Trees)
-        foreach (var decl in tree.Declarations.Children)
         {
-            functionCollector.Listen(context, decl);
+            foreach (var decl in tree.Declarations.Children)
+            {
+                functionCollector.Listen(context, decl);
+                globalVarListener.Listen(context, decl);
+            }
         }
 
         return await next.Invoke(context);

NewSource/SocordiaC/hello.scs

@@ -5,6 +5,8 @@ public enum Color {
     Blue
 }
 
+let defaultColor: Color;
+
 func main()
 {
      let mut x = 12;