diff --git a/devel/lib/_npm/kaitai-struct-compiler/kaitai-struct-compiler.js b/devel/lib/_npm/kaitai-struct-compiler/kaitai-struct-compiler.js
index 5a2e2c1..bf760a8 100644
--- a/devel/lib/_npm/kaitai-struct-compiler/kaitai-struct-compiler.js
+++ b/devel/lib/_npm/kaitai-struct-compiler/kaitai-struct-compiler.js
@@ -3027,8 +3027,8 @@ function $m_Lio_kaitai_struct_Utils$() {
 function $c_Lio_kaitai_struct_Version$() {
   this.Lio_kaitai_struct_Version$__f_version = null;
   this.Lio_kaitai_struct_Version$__f_gitTime = null;
-  this.Lio_kaitai_struct_Version$__f_version = "0.11-SNAPSHOT20241002.233639.542b241";
-  this.Lio_kaitai_struct_Version$__f_gitTime = "2024-10-02T23:36:39Z"
+  this.Lio_kaitai_struct_Version$__f_version = "0.11-SNAPSHOT20241226.230133.d3b189e";
+  this.Lio_kaitai_struct_Version$__f_gitTime = "2024-12-26T23:01:33Z"
 }
 $c_Lio_kaitai_struct_Version$.prototype = new $h_O();
 $c_Lio_kaitai_struct_Version$.prototype.constructor = $c_Lio_kaitai_struct_Version$;
@@ -51869,8 +51869,11 @@ function $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__attrUs
     } else {
       var tempVarName = $thiz.localTemporaryName__Lio_kaitai_struct_format_Identifier__T(id);
       $thiz.handleAssignmentTempVar__Lio_kaitai_struct_datatype_DataType__T__T__V(dataType, tempVarName, expr);
-      $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__handleAssignment__Lio_kaitai_struct_format_Identifier__T__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, tempVarName, rep, false);
-      $thiz.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V(tempVarName, dataType, assignType)
+      $thiz.tryFinally__F0__F0__V(new $c_sjsr_AnonFunction0((() => {
+        $thiz.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V(tempVarName, dataType, assignType)
+      })), new $c_sjsr_AnonFunction0((() => {
+        $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__handleAssignment__Lio_kaitai_struct_format_Identifier__T__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, tempVarName, rep, false)
+      })))
     }
   }
 }
@@ -65519,8 +65522,20 @@ function $f_Lio_kaitai_struct_languages_components_GoReads__attrUserTypeParse__L
     };
     var newIO = io
   };
-  var expr = $n($thiz.Lio_kaitai_struct_languages_GoCompiler__f_translator).userType__Lio_kaitai_struct_datatype_DataType$UserType__T__Lio_kaitai_struct_translators_ResultLocalVar(dataType, newIO);
-  $f_Lio_kaitai_struct_languages_components_GoReads__handleAssignment__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_translators_TranslatorResult__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, expr, rep, false)
+  var expr = $thiz.parseExpr__Lio_kaitai_struct_datatype_DataType__T__s_Option__T(dataType, newIO, defEndian);
+  var v = new $c_Lio_kaitai_struct_translators_ResultLocalVar($n($thiz.Lio_kaitai_struct_languages_GoCompiler__f_translator).allocateLocalVar__I());
+  var tempVarName = $n($thiz.Lio_kaitai_struct_languages_GoCompiler__f_translator).resToStr__Lio_kaitai_struct_translators_TranslatorResult__T(v);
+  if ($n($n($as_Lio_kaitai_struct_languages_components_LanguageCompiler($thiz)).Lio_kaitai_struct_languages_components_LanguageCompiler__f_config).Lio_kaitai_struct_RuntimeConfig__f_autoRead) {
+    $n($as_Lio_kaitai_struct_languages_components_ValidateOps($thiz)).handleAssignmentTempVar__Lio_kaitai_struct_datatype_DataType__T__T__V(dataType, tempVarName, expr);
+    $thiz.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType$UserType__T__V(tempVarName, dataType, newIO);
+    $n($thiz.Lio_kaitai_struct_languages_GoCompiler__f_translator).outAddErrCheck__V();
+    $f_Lio_kaitai_struct_languages_components_GoReads__handleAssignment__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_translators_TranslatorResult__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, v, rep, false)
+  } else {
+    $n($as_Lio_kaitai_struct_languages_components_ValidateOps($thiz)).handleAssignmentTempVar__Lio_kaitai_struct_datatype_DataType__T__T__V(dataType, tempVarName, expr);
+    $thiz.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType$UserType__T__V(tempVarName, dataType, newIO);
+    $f_Lio_kaitai_struct_languages_components_GoReads__handleAssignment__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_translators_TranslatorResult__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, v, rep, false);
+    $n($thiz.Lio_kaitai_struct_languages_GoCompiler__f_translator).outAddErrCheck__V()
+  }
 }
 function $f_Lio_kaitai_struct_languages_components_GoReads__handleAssignment__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_translators_TranslatorResult__Lio_kaitai_struct_format_RepeatSpec__Z__V($thiz, id, expr, rep, isRaw) {
   var x = $m_Lio_kaitai_struct_format_RepeatEos$();
@@ -85023,54 +85038,6 @@ $c_Lio_kaitai_struct_translators_GoTranslator.prototype.boolToInt__Lio_kaitai_st
   $n(this.Lio_kaitai_struct_translators_GoTranslator__f_out).puts__T__V("}");
   return new $c_Lio_kaitai_struct_translators_ResultLocalVar(v)
 });
-$c_Lio_kaitai_struct_translators_GoTranslator.prototype.userType__Lio_kaitai_struct_datatype_DataType$UserType__T__Lio_kaitai_struct_translators_ResultLocalVar = (function(t, io) {
-  var v = this.allocateLocalVar__I();
-  if ($n(t).isExternal__Lio_kaitai_struct_format_ClassSpec__Z($n(this.Lio_kaitai_struct_translators_GoTranslator__f_provider).Lio_kaitai_struct_ClassTypeProvider__f_nowClass)) {
-    var x1$2___1 = "nil";
-    var x1$2___2 = "nil"
-  } else {
-    var rc8 = false;
-    var x2 = null;
-    var x1 = $n(t).Lio_kaitai_struct_datatype_DataType$UserType__f_forcedParent;
-    matchEnd9: {
-      var parent;
-      if ((x1 instanceof $c_s_Some)) {
-        rc8 = true;
-        x2 = $as_s_Some(x1);
-        var p3 = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2).s_Some__f_value);
-        var x = $m_Lio_kaitai_struct_datatype_DataType$().Lio_kaitai_struct_datatype_DataType$__f_USER_TYPE_NO_PARENT;
-        if (((x === null) ? (p3 === null) : $n(x).equals__O__Z(p3))) {
-          var parent = "nil";
-          break matchEnd9
-        }
-      };
-      if (rc8) {
-        var fp = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2).s_Some__f_value);
-        var parent = this.translate__Lio_kaitai_struct_exprlang_Ast$expr__I__T(fp, 0);
-        break matchEnd9
-      };
-      var x$3 = $m_s_None$();
-      if ((x$3 === x1)) {
-        var parent = "this";
-        break matchEnd9
-      };
-      throw new $c_s_MatchError(x1)
-    };
-    var x1$2___1 = parent;
-    var x1$2___2 = "this._root"
-  };
-  var parent$2 = $as_T(x1$2___1);
-  var root = $as_T(x1$2___2);
-  var this$2 = $n($as_sc_IterableOnceOps($n($n(t).Lio_kaitai_struct_datatype_DataType$UserType__f_args).map__F1__O(new $c_sjsr_AnonFunction1(((a$2) => {
-    var a = $as_Lio_kaitai_struct_exprlang_Ast$expr(a$2);
-    return this.translate__Lio_kaitai_struct_exprlang_Ast$expr__I__T(a, 0)
-  })))));
-  var addParams = $f_sc_IterableOnceOps__mkString__T__T__T__T(this$2, "", ", ", "");
-  $n(this.Lio_kaitai_struct_translators_GoTranslator__f_out).puts__T__V((((((this.localVarName__I__T(v) + " := New") + $m_Lio_kaitai_struct_languages_GoCompiler$().types2class__sci_List__T($n($as_Lio_kaitai_struct_format_ClassSpec($n($n(t).Lio_kaitai_struct_datatype_DataType$UserType__f_classSpec).get__O())).Lio_kaitai_struct_format_ClassSpec__f_name)) + "(") + addParams) + ")"));
-  $n(this.Lio_kaitai_struct_translators_GoTranslator__f_out).puts__T__V((((((((("err = " + this.localVarName__I__T(v)) + ".Read(") + io) + ", ") + parent$2) + ", ") + root) + ")"));
-  this.outAddErrCheck__V();
-  return new $c_Lio_kaitai_struct_translators_ResultLocalVar(v)
-});
 $c_Lio_kaitai_struct_translators_GoTranslator.prototype.trInterpolatedStringLiteral__sci_Seq__Lio_kaitai_struct_translators_TranslatorResult = (function(exprs) {
   if ((exprs !== null)) {
     $n($m_s_package$().s_package$__f_Seq);
@@ -87936,10 +87903,10 @@ $c_Lio_kaitai_struct_translators_PerlTranslator.prototype.anyField__Lio_kaitai_s
   return ((this.translate__Lio_kaitai_struct_exprlang_Ast$expr__I__T(value, 0) + "->") + this.doName__T__T(attrName))
 });
 $c_Lio_kaitai_struct_translators_PerlTranslator.prototype.doLocalName__T__T = (function(s) {
-  return (((s === "_") || (s === "_on")) ? ("$" + s) : (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_INDEX === s) ? this.doName__T__T(s) : ("$self->" + this.doName__T__T(s))))
+  return (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_SWITCH_ON === s) ? "$_on" : ((($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_ITERATOR === s) || ($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_INDEX === s)) ? this.doName__T__T(s) : ("$self->" + this.doName__T__T(s))))
 });
 $c_Lio_kaitai_struct_translators_PerlTranslator.prototype.doName__T__T = (function(s) {
-  return (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_ITERATOR === s) ? "$_" : (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_ITERATOR2 === s) ? "$_buf" : (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_INDEX === s) ? "$i" : (s + "()"))))
+  return (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_ITERATOR === s) ? "$_it" : (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_ITERATOR2 === s) ? "$_buf" : (($m_Lio_kaitai_struct_format_Identifier$().Lio_kaitai_struct_format_Identifier$__f_INDEX === s) ? "$i" : (s + "()"))))
 });
 $c_Lio_kaitai_struct_translators_PerlTranslator.prototype.doInternalName__Lio_kaitai_struct_format_Identifier__T = (function(id) {
   return $m_Lio_kaitai_struct_languages_PerlCompiler$().privateMemberName__Lio_kaitai_struct_format_Identifier__T(id)
@@ -93237,6 +93204,22 @@ $c_Lio_kaitai_struct_languages_CppCompiler.prototype.userTypeDebugRead__T__Lio_k
   var expr = ((!((assignType === null) ? (dataType === null) : $n(assignType).equals__O__Z(dataType))) ? (((("static_cast<" + this.kaitaiType2NativeType__Lio_kaitai_struct_datatype_DataType__Z__T(dataType, false)) + ">(") + id) + ")") : id);
   $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).puts__T__V((expr + "->_read();"))
 });
+$c_Lio_kaitai_struct_languages_CppCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).puts__T__V("try {");
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).dec__V();
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).puts__T__V("} catch(...) {");
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).puts__T__V("throw;");
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).dec__V();
+  $n(this.Lio_kaitai_struct_languages_CppCompiler__f_outSrc).puts__T__V("}");
+  var this$3 = $n(finallyBlock);
+  this$3.apply__O()
+});
 $c_Lio_kaitai_struct_languages_CppCompiler.prototype.switchRequiresIfs__Lio_kaitai_struct_datatype_DataType__Z = (function(onType) {
   return (!((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$IntType) || (onType instanceof $c_Lio_kaitai_struct_datatype_DataType$EnumType)))
 });
@@ -94724,44 +94707,55 @@ $c_Lio_kaitai_struct_languages_GoCompiler.prototype.parseExpr__Lio_kaitai_struct
     return (((((io + ".ReadBitsInt") + $m_Lio_kaitai_struct_Utils$().upperCamelCase__T__T($n(bitEndian$2).toSuffix__T())) + "(") + width) + ")")
   } else if ((dataType instanceof $c_Lio_kaitai_struct_datatype_DataType$UserType)) {
     var x10 = $as_Lio_kaitai_struct_datatype_DataType$UserType(dataType);
-    if ($n(x10).isExternal__Lio_kaitai_struct_format_ClassSpec__Z($n(this.Lio_kaitai_struct_languages_components_LanguageCompiler__f_typeProvider).Lio_kaitai_struct_ClassTypeProvider__f_nowClass)) {
-      var addArgs = ""
-    } else {
-      var rc8 = false;
-      var x2$2 = null;
-      var x1$2 = $n(x10).Lio_kaitai_struct_datatype_DataType$UserType__f_forcedParent;
-      matchEnd9: {
-        var parent;
-        if ((x1$2 instanceof $c_s_Some)) {
-          rc8 = true;
-          x2$2 = $as_s_Some(x1$2);
-          var p3 = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2$2).s_Some__f_value);
-          var x = $m_Lio_kaitai_struct_datatype_DataType$().Lio_kaitai_struct_datatype_DataType$__f_USER_TYPE_NO_PARENT;
-          if (((x === null) ? (p3 === null) : $n(x).equals__O__Z(p3))) {
-            var parent = "null";
-            break matchEnd9
-          }
-        };
-        if (rc8) {
-          var fp = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2$2).s_Some__f_value);
-          var this$1 = $n(this.Lio_kaitai_struct_languages_GoCompiler__f_translator);
-          var parent = this$1.translate__Lio_kaitai_struct_exprlang_Ast$expr__I__T(fp, 0);
-          break matchEnd9
-        };
-        var x$3 = $m_s_None$();
-        if ((x$3 === x1$2)) {
-          var parent = "this";
-          break matchEnd9
-        };
-        throw new $c_s_MatchError(x1$2)
-      };
-      var addArgs = ((", " + parent) + ", _root")
-    };
-    return (((($m_Lio_kaitai_struct_languages_GoCompiler$().types2class__sci_List__T($n(x10).Lio_kaitai_struct_datatype_DataType$UserType__f_name) + "(") + io) + addArgs) + ")")
+    var this$2 = $n($as_sc_IterableOnceOps($n($n(x10).Lio_kaitai_struct_datatype_DataType$UserType__f_args).map__F1__O(new $c_sjsr_AnonFunction1(((a$2) => {
+      var a = $as_Lio_kaitai_struct_exprlang_Ast$expr(a$2);
+      return $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, a)
+    })))));
+    var addParams = $f_sc_IterableOnceOps__mkString__T__T__T__T(this$2, "", ", ", "");
+    return (((("New" + $m_Lio_kaitai_struct_languages_GoCompiler$().types2class__sci_List__T($n($as_Lio_kaitai_struct_format_ClassSpec($n($n(x10).Lio_kaitai_struct_datatype_DataType$UserType__f_classSpec).get__O())).Lio_kaitai_struct_format_ClassSpec__f_name)) + "(") + addParams) + ")")
   } else {
     throw new $c_s_MatchError(dataType)
   }
 });
+$c_Lio_kaitai_struct_languages_GoCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType$UserType__T__V = (function(id, t, io) {
+  if ($n(t).isExternal__Lio_kaitai_struct_format_ClassSpec__Z($n(this.Lio_kaitai_struct_languages_components_LanguageCompiler__f_typeProvider).Lio_kaitai_struct_ClassTypeProvider__f_nowClass)) {
+    var x1$2___1 = "nil";
+    var x1$2___2 = "nil"
+  } else {
+    var rc8 = false;
+    var x2 = null;
+    var x1 = $n(t).Lio_kaitai_struct_datatype_DataType$UserType__f_forcedParent;
+    matchEnd9: {
+      var parent;
+      if ((x1 instanceof $c_s_Some)) {
+        rc8 = true;
+        x2 = $as_s_Some(x1);
+        var p3 = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2).s_Some__f_value);
+        var x = $m_Lio_kaitai_struct_datatype_DataType$().Lio_kaitai_struct_datatype_DataType$__f_USER_TYPE_NO_PARENT;
+        if (((x === null) ? (p3 === null) : $n(x).equals__O__Z(p3))) {
+          var parent = "nil";
+          break matchEnd9
+        }
+      };
+      if (rc8) {
+        var fp = $as_Lio_kaitai_struct_exprlang_Ast$expr($n(x2).s_Some__f_value);
+        var parent = $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, fp);
+        break matchEnd9
+      };
+      var x$3 = $m_s_None$();
+      if ((x$3 === x1)) {
+        var parent = "this";
+        break matchEnd9
+      };
+      throw new $c_s_MatchError(x1)
+    };
+    var x1$2___1 = parent;
+    var x1$2___2 = "this._root"
+  };
+  var parent$2 = $as_T(x1$2___1);
+  var root = $as_T(x1$2___2);
+  $n(this.Lio_kaitai_struct_languages_GoCompiler__f_out).puts__T__V((((((((("err = " + id) + ".Read(") + io) + ", ") + parent$2) + ", ") + root) + ")"))
+});
 $c_Lio_kaitai_struct_languages_GoCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   $n(this.Lio_kaitai_struct_languages_GoCompiler__f_out).puts__T__V((("switch (" + $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, on)) + ") {"))
 });
@@ -95691,6 +95685,19 @@ $c_Lio_kaitai_struct_languages_JavaScriptCompiler.prototype.bytesPadTermExpr__T_
 $c_Lio_kaitai_struct_languages_JavaScriptCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
   $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).puts__T__V((id + "._read();"))
 });
+$c_Lio_kaitai_struct_languages_JavaScriptCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).puts__T__V("try {");
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).puts__T__V("} finally {");
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_JavaScriptCompiler__f_out).puts__T__V("}")
+});
 $c_Lio_kaitai_struct_languages_JavaScriptCompiler.prototype.switchRequiresIfs__Lio_kaitai_struct_datatype_DataType__Z = (function(onType) {
   return (!((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$IntType) || ((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$BooleanType) || ((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$EnumType) || (onType instanceof $c_Lio_kaitai_struct_datatype_DataType$StrType)))))
 });
@@ -96548,6 +96555,19 @@ $c_Lio_kaitai_struct_languages_PHPCompiler.prototype.bytesPadTermExpr__T__s_Opti
 $c_Lio_kaitai_struct_languages_PHPCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
   $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).puts__T__V((id + "->_read();"))
 });
+$c_Lio_kaitai_struct_languages_PHPCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).puts__T__V("try {");
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).puts__T__V("} finally {");
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).puts__T__V("}")
+});
 $c_Lio_kaitai_struct_languages_PHPCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_translator).detectType__Lio_kaitai_struct_exprlang_Ast$expr__Lio_kaitai_struct_datatype_DataType(on);
   $n(this.Lio_kaitai_struct_languages_PHPCompiler__f_out).puts__T__V((("switch (" + $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, on)) + ") {"));
@@ -96772,12 +96792,6 @@ $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.createSubstream__Lio_kaita
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.createSubstreamFixedSize__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesLimitType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T = (function(id, blt, io, rep, defEndian) {
   return $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__createSubstreamBuffered__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T(this, id, blt, io, rep, defEndian)
 });
-$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.handleAssignmentTempVar__Lio_kaitai_struct_datatype_DataType__T__T__V = (function(dataType, id, expr) {
-  $m_s_Predef$().$qmark$qmark$qmark__E()
-});
-$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
-  $m_s_Predef$().$qmark$qmark$qmark__E()
-});
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.instanceCalculate__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(instName, dataType, value) {
   $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__instanceCalculate__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_exprlang_Ast$expr__V(this, instName, dataType, value)
 });
@@ -97120,6 +97134,8 @@ $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.handleAssignmentRepeatExpr
   this.handleAssignmentRepeatEos__Lio_kaitai_struct_format_Identifier__T__V(id, expr)
 });
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.condRepeatUntilHeader__Lio_kaitai_struct_format_Identifier__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, io, dataType, untilExpr) {
+  this.blockScopeHeader__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V((("my " + $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_translator).doName__T__T("_")) + ";"));
   $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("do {");
   $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).inc__V()
 });
@@ -97141,11 +97157,22 @@ $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.handleAssignmentRepeatUnti
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.condRepeatUntilFooter__Lio_kaitai_struct_format_Identifier__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, io, dataType, untilExpr) {
   $n(this.Lio_kaitai_struct_languages_components_LanguageCompiler__f_typeProvider).Lio_kaitai_struct_ClassTypeProvider__f__currentIteratorType = new $c_s_Some(dataType);
   $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).dec__V();
-  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V((("} until (" + $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, untilExpr)) + ");"))
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V((("} until (" + $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, untilExpr)) + ");"));
+  this.universalFooter__V()
 });
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.handleAssignmentSimple__Lio_kaitai_struct_format_Identifier__T__V = (function(id, expr) {
   $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V(((($m_Lio_kaitai_struct_languages_PerlCompiler$().privateMemberName__Lio_kaitai_struct_format_Identifier__T(id) + " = ") + expr) + ";"))
 });
+$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.handleAssignmentTempVar__Lio_kaitai_struct_datatype_DataType__T__T__V = (function(dataType, id, expr) {
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V((((("my " + id) + " = ") + expr) + ";"))
+});
+$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.blockScopeHeader__V = (function() {
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("{");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).inc__V()
+});
+$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.blockScopeFooter__V = (function() {
+  this.universalFooter__V()
+});
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.parseExpr__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__T__s_Option__T = (function(dataType, assignType, io, defEndian) {
   if ($is_Lio_kaitai_struct_datatype_DataType$ReadableType(dataType)) {
     var x2 = $as_Lio_kaitai_struct_datatype_DataType$ReadableType(dataType);
@@ -97248,6 +97275,30 @@ $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.bytesPadTermExpr__T__s_Opt
   };
   return expr2
 });
+$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V((id + "->_read();"))
+});
+$c_Lio_kaitai_struct_languages_PerlCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("eval {");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("1;");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("} or do {");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).inc__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("$failed = 1;");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("$err = $@;");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("};");
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("if ($failed) {");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).inc__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("die $err;");
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PerlCompiler__f_out).puts__T__V("}")
+});
 $c_Lio_kaitai_struct_languages_PerlCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   /*<skip>*/
 });
@@ -98420,6 +98471,22 @@ $c_Lio_kaitai_struct_languages_CSharpCompiler.prototype.userTypeDebugRead__T__Li
   var expr = ((!((assignType === null) ? (dataType === null) : $n(assignType).equals__O__Z(dataType))) ? (((("((" + $m_Lio_kaitai_struct_languages_CSharpCompiler$().kaitaiType2NativeType__Lio_kaitai_struct_ImportList__Lio_kaitai_struct_datatype_DataType__T(this.Lio_kaitai_struct_languages_CSharpCompiler__f_importList, dataType)) + ") (") + id) + "))") : id);
   $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V((expr + "._read();"))
 });
+$c_Lio_kaitai_struct_languages_CSharpCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("try");
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("{");
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("}");
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("finally");
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("{");
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_CSharpCompiler__f_out).puts__T__V("}")
+});
 $c_Lio_kaitai_struct_languages_CSharpCompiler.prototype.switchRequiresIfs__Lio_kaitai_struct_datatype_DataType__Z = (function(onType) {
   return (!((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$IntType) || ((onType instanceof $c_Lio_kaitai_struct_datatype_DataType$EnumType) || (onType instanceof $c_Lio_kaitai_struct_datatype_DataType$StrType))))
 });
@@ -99297,6 +99364,21 @@ $c_Lio_kaitai_struct_languages_LuaCompiler.prototype.bytesPadTermExpr__T__s_Opti
 $c_Lio_kaitai_struct_languages_LuaCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
   $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V((id + ":_read()"))
 });
+$c_Lio_kaitai_struct_languages_LuaCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V("local success, err = pcall(function()");
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V("end)");
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V("if not success then");
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).inc__V();
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V("error(err)");
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_LuaCompiler__f_out).puts__T__V("end")
+});
 $c_Lio_kaitai_struct_languages_LuaCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   /*<skip>*/
 });
@@ -99444,6 +99526,9 @@ $c_Lio_kaitai_struct_languages_NimCompiler.prototype.createSubstream__Lio_kaitai
 $c_Lio_kaitai_struct_languages_NimCompiler.prototype.createSubstreamFixedSize__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesLimitType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T = (function(id, blt, io, rep, defEndian) {
   return $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__createSubstreamBuffered__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T(this, id, blt, io, rep, defEndian)
 });
+$c_Lio_kaitai_struct_languages_NimCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $m_s_Predef$().$qmark$qmark$qmark__E()
+});
 $c_Lio_kaitai_struct_languages_NimCompiler.prototype.attrParse__Lio_kaitai_struct_format_AttrLikeSpec__Lio_kaitai_struct_format_Identifier__s_Option__V = (function(attr, id, defEndian) {
   $f_Lio_kaitai_struct_languages_components_CommonReads__attrParse__Lio_kaitai_struct_format_AttrLikeSpec__Lio_kaitai_struct_format_Identifier__s_Option__V(this, attr, id, defEndian)
 });
@@ -100910,6 +100995,19 @@ $c_Lio_kaitai_struct_languages_RubyCompiler.prototype.bytesPadTermExpr__T__s_Opt
 $c_Lio_kaitai_struct_languages_RubyCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
   $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).puts__T__V((id + "._read"))
 });
+$c_Lio_kaitai_struct_languages_RubyCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).puts__T__V("begin");
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).puts__T__V("ensure");
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).puts__T__V("end")
+});
 $c_Lio_kaitai_struct_languages_RubyCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   $n(this.Lio_kaitai_struct_languages_RubyCompiler__f_out).puts__T__V(("case " + $f_Lio_kaitai_struct_languages_components_ObjectOrientedLanguage__expression__Lio_kaitai_struct_exprlang_Ast$expr__T(this, on)))
 });
@@ -101126,6 +101224,9 @@ $c_Lio_kaitai_struct_languages_RustCompiler.prototype.results__Lio_kaitai_struct
 $c_Lio_kaitai_struct_languages_RustCompiler.prototype.createSubstreamFixedSize__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesLimitType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T = (function(id, blt, io, rep, defEndian) {
   return $f_Lio_kaitai_struct_languages_components_EveryReadIsExpression__createSubstreamBuffered__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType$BytesType__T__Lio_kaitai_struct_format_RepeatSpec__s_Option__T(this, id, blt, io, rep, defEndian)
 });
+$c_Lio_kaitai_struct_languages_RustCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $m_s_Predef$().$qmark$qmark$qmark__E()
+});
 $c_Lio_kaitai_struct_languages_RustCompiler.prototype.attrDebugStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_datatype_DataType__s_Option__Lio_kaitai_struct_format_RepeatSpec__V = (function(attrId, attrType, io, repeat) {
   /*<skip>*/
 });
@@ -104000,6 +104101,19 @@ $c_Lio_kaitai_struct_languages_JavaCompiler.prototype.userTypeDebugRead__T__Lio_
   };
   $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).puts__T__V((expr + "._read();"))
 });
+$c_Lio_kaitai_struct_languages_JavaCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).puts__T__V("try {");
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).puts__T__V("} finally {");
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_JavaCompiler__f_out).puts__T__V("}")
+});
 $c_Lio_kaitai_struct_languages_JavaCompiler.prototype.switchCasesRender__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__sci_Map__F1__F1__V = (function(id, on, cases, normalCaseProc, elseCaseProc) {
   var onType = $as_Lio_kaitai_struct_datatype_DataType($n($n(this.Lio_kaitai_struct_languages_components_LanguageCompiler__f_typeProvider).Lio_kaitai_struct_ClassTypeProvider__f__currentSwitchType).get__O());
   var isNullable = (onType instanceof $c_Lio_kaitai_struct_datatype_DataType$EnumType);
@@ -104968,6 +105082,18 @@ $c_Lio_kaitai_struct_languages_PythonCompiler.prototype.bytesPadTermExpr__T__s_O
 $c_Lio_kaitai_struct_languages_PythonCompiler.prototype.userTypeDebugRead__T__Lio_kaitai_struct_datatype_DataType__Lio_kaitai_struct_datatype_DataType__V = (function(id, dataType, assignType) {
   $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).puts__T__V((id + "._read()"))
 });
+$c_Lio_kaitai_struct_languages_PythonCompiler.prototype.tryFinally__F0__F0__V = (function(tryBlock, finallyBlock) {
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).puts__T__V("try:");
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).inc__V();
+  var this$1 = $n(tryBlock);
+  this$1.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).dec__V();
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).puts__T__V("finally:");
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).inc__V();
+  var this$2 = $n(finallyBlock);
+  this$2.apply__O();
+  $n(this.Lio_kaitai_struct_languages_PythonCompiler__f_out).dec__V()
+});
 $c_Lio_kaitai_struct_languages_PythonCompiler.prototype.switchStart__Lio_kaitai_struct_format_Identifier__Lio_kaitai_struct_exprlang_Ast$expr__V = (function(id, on) {
   /*<skip>*/
 });