Add @:copyValue

src/reflaxe/config/Meta.hx

@@ -12,7 +12,18 @@ enum abstract Meta(String) from String to String {
 		If used on a type, temporary variables that might have been generated
 		by the Haxe compiler (only used once) will be removed and inlined.
 
-		See `reflaxe/compiler/TemporaryVarRemover.hx`.
+		See `reflaxe/preprocessors/implementations/RemoveTemporaryVariablesImpl.hx`.
 	**/
-	var AvoidTemporaries = ":avoid_temporaries";
+	var AvoidTemporaries = ":avoidTemporaries";
+
+	/**
+		Indicates this type is "copied" instead of referenced when assigned.
+		This is used by `RemoveLocalVariableAliases` to ensure only aliases
+		that are references are removed.
+
+		At the current moment this is only used by `RemoveLocalVariableAliases`.
+
+		See `reflaxe/preprocessors/implementations/RemoveLocalVariableAliasesImpl.hx`.
+	**/
+	var CopyValue = ":copyValue";
 }

src/reflaxe/preprocessors/implementations/RemoveLocalVariableAliasesImpl.hx

@@ -10,6 +10,7 @@ import reflaxe.helpers.Context;
 import haxe.macro.Type;
 
 using reflaxe.helpers.NameMetaHelper;
+using reflaxe.helpers.NullableMetaAccessHelper;
 using reflaxe.helpers.NullHelper;
 using reflaxe.helpers.TypedExprHelper;
 using reflaxe.helpers.TypeHelper;
@@ -42,6 +43,7 @@ class RemoveLocalVariableAliasesImpl {
 		final innerType = Context.followWithAbstracts(t);
 		return switch(innerType) {
 			case TAbstract(_.get() => abs, []): abs.hasMeta(":runtimeValue");
+			case _ if(innerType.getMeta().maybeHas(":copyValue")): true;
 			case _ if(innerType.isString()): true;
 			case _: false;
 		}

src/reflaxe/preprocessors/implementations/RemoveTemporaryVariablesImpl.hx

@@ -22,7 +22,7 @@ using reflaxe.helpers.TypedExprHelper;
 enum RemoveTemporaryVariablesMode {
 	/**
 		Only variables assigned from class fields with the
-		`@:avoid_temporaries` metadata are removed. This meta
+		`@:avoidTemporaries` metadata are removed. This meta
 		can be placed on the field itself, or the class declaration
 		of the type the field is using.
 
@@ -33,7 +33,7 @@ enum RemoveTemporaryVariablesMode {
 
 		```haxe
 		// Given a Rect class like this...
-		@:avoid_temporaries
+		@:avoidTemporaries
 		class Rect { ... }
 
 		// This would be converted...
@@ -205,15 +205,15 @@ class RemoveTemporaryVariablesImpl {
 	/**
 		Given a `TVar` and its expression, check if it should be removed
 		on the basis of its type or field declaration having the
-		`@:avoid_temporaries` metadata.
+		`@:avoidTemporaries` metadata.
 	**/
 	static function shouldRemoveVariableBeauseAvoidTemporaries(tvar: TVar, maybeExpr: Null<TypedExpr>) {
 		final fieldAccess = isField(maybeExpr);
 		if(fieldAccess == null) {
 			return false;
 		}
 
-		// Check if type has `@:avoid_temporaries`.
+		// Check if type has `@:avoidTemporaries`.
 		final isAvoidTemporariesType = switch(tvar.t) {
 			case TInst(clsRef, _): clsRef.get().hasMeta(Meta.AvoidTemporaries);
 			case TAbstract(absRef, _): absRef.get().hasMeta(Meta.AvoidTemporaries);
@@ -222,7 +222,7 @@ class RemoveTemporaryVariablesImpl {
 		}
 		if(isAvoidTemporariesType) { return true; }
 
-		// Check if field has `@:avoid_temporaries`.
+		// Check if field has `@:avoidTemporaries`.
 		return switch(fieldAccess) {
 			case FInstance(_, _, cf) | FStatic(_, cf): cf.get().hasMeta(Meta.AvoidTemporaries);
 			case _: false;