[js] Convert to using size instead of sentinels

This CL changes the DefineMethod, DefineProps and DefineConsts methods
to pass a size instead of depending on a sentinel value in the
definition arrays.

Change-Id: Ie054544124290c0833a8b21af175a203ca99591a
Reviewed-on: https://pdfium-review.googlesource.com/20551
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

26 files changed, 52 insertions, 75 deletions

diff --git a/fxjs/xfa/cjx_container.cpp b/fxjs/xfa/cjx_container.cpp
index a5d7921090..cf0aca0cbb 100644
--- a/fxjs/xfa/cjx_container.cpp
+++ b/fxjs/xfa/cjx_container.cpp
@@ -16,11 +16,10 @@
 
 const CJX_MethodSpec CJX_Container::MethodSpecs[] = {
     {"getDelta", getDelta_static},
-    {"getDeltas", getDeltas_static},
-    {"", nullptr}};
+    {"getDeltas", getDeltas_static}};
 
 CJX_Container::CJX_Container(CXFA_Node* node) : CJX_Node(node) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Container::~CJX_Container() {}
diff --git a/fxjs/xfa/cjx_datawindow.cpp b/fxjs/xfa/cjx_datawindow.cpp
index 54f32047fc..47c743f8f7 100644
--- a/fxjs/xfa/cjx_datawindow.cpp
+++ b/fxjs/xfa/cjx_datawindow.cpp
@@ -15,12 +15,11 @@ const CJX_MethodSpec CJX_DataWindow::MethodSpecs[] = {
     {"gotoRecord", gotoRecord_static},
     {"isRecordGroup", isRecordGroup_static},
     {"moveCurrentRecord", moveCurrentRecord_static},
-    {"record", record_static},
-    {"", nullptr}};
+    {"record", record_static}};
 
 CJX_DataWindow::CJX_DataWindow(CScript_DataWindow* window)
     : CJX_Object(window) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_DataWindow::~CJX_DataWindow() {}
diff --git a/fxjs/xfa/cjx_delta.cpp b/fxjs/xfa/cjx_delta.cpp
index 1dfad24319..c361bbb256 100644
--- a/fxjs/xfa/cjx_delta.cpp
+++ b/fxjs/xfa/cjx_delta.cpp
@@ -12,11 +12,10 @@
 #include "fxjs/js_resources.h"
 #include "xfa/fxfa/parser/cxfa_delta.h"
 
-const CJX_MethodSpec CJX_Delta::MethodSpecs[] = {{"restore", restore_static},
-                                                 {"", nullptr}};
+const CJX_MethodSpec CJX_Delta::MethodSpecs[] = {{"restore", restore_static}};
 
 CJX_Delta::CJX_Delta(CXFA_Delta* delta) : CJX_Object(delta) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Delta::~CJX_Delta() {}
diff --git a/fxjs/xfa/cjx_desc.cpp b/fxjs/xfa/cjx_desc.cpp
index 7ff58a774a..03ab8f8d21 100644
--- a/fxjs/xfa/cjx_desc.cpp
+++ b/fxjs/xfa/cjx_desc.cpp
@@ -12,11 +12,10 @@
 #include "fxjs/js_resources.h"
 #include "xfa/fxfa/parser/cxfa_desc.h"
 
-const CJX_MethodSpec CJX_Desc::MethodSpecs[] = {{"metadata", metadata_static},
-                                                {"", nullptr}};
+const CJX_MethodSpec CJX_Desc::MethodSpecs[] = {{"metadata", metadata_static}};
 
 CJX_Desc::CJX_Desc(CXFA_Desc* desc) : CJX_Node(desc) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Desc::~CJX_Desc() {}
diff --git a/fxjs/xfa/cjx_eventpseudomodel.cpp b/fxjs/xfa/cjx_eventpseudomodel.cpp
index a109d1cb70..449153c548 100644
--- a/fxjs/xfa/cjx_eventpseudomodel.cpp
+++ b/fxjs/xfa/cjx_eventpseudomodel.cpp
@@ -45,12 +45,11 @@ void BooleanProperty(CFXJSE_Value* pValue, bool& bValue, bool bSetting) {
 
 const CJX_MethodSpec CJX_EventPseudoModel::MethodSpecs[] = {
     {"emit", emit_static},
-    {"reset", reset_static},
-    {"", nullptr}};
+    {"reset", reset_static}};
 
 CJX_EventPseudoModel::CJX_EventPseudoModel(CScript_EventPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_EventPseudoModel::~CJX_EventPseudoModel() {}
diff --git a/fxjs/xfa/cjx_exclgroup.cpp b/fxjs/xfa/cjx_exclgroup.cpp
index 6317736ffa..e24be804e0 100644
--- a/fxjs/xfa/cjx_exclgroup.cpp
+++ b/fxjs/xfa/cjx_exclgroup.cpp
@@ -23,11 +23,10 @@ const CJX_MethodSpec CJX_ExclGroup::MethodSpecs[] = {
     {"execEvent", execEvent_static},
     {"execInitialize", execInitialize_static},
     {"execValidate", execValidate_static},
-    {"selectedMember", selectedMember_static},
-    {"", nullptr}};
+    {"selectedMember", selectedMember_static}};
 
 CJX_ExclGroup::CJX_ExclGroup(CXFA_ExclGroup* group) : CJX_Node(group) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_ExclGroup::~CJX_ExclGroup() {}
diff --git a/fxjs/xfa/cjx_field.cpp b/fxjs/xfa/cjx_field.cpp
index d2cffbc983..4b5f840322 100644
--- a/fxjs/xfa/cjx_field.cpp
+++ b/fxjs/xfa/cjx_field.cpp
@@ -29,11 +29,10 @@ const CJX_MethodSpec CJX_Field::MethodSpecs[] = {
     {"getDisplayItem", getDisplayItem_static},
     {"getItemState", getItemState_static},
     {"getSaveItem", getSaveItem_static},
-    {"setItemState", setItemState_static},
-    {"", nullptr}};
+    {"setItemState", setItemState_static}};
 
 CJX_Field::CJX_Field(CXFA_Field* field) : CJX_Container(field) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Field::~CJX_Field() {}
diff --git a/fxjs/xfa/cjx_form.cpp b/fxjs/xfa/cjx_form.cpp
index 22a7db2135..54f06fe966 100644
--- a/fxjs/xfa/cjx_form.cpp
+++ b/fxjs/xfa/cjx_form.cpp
@@ -23,11 +23,10 @@ const CJX_MethodSpec CJX_Form::MethodSpecs[] = {
     {"execValidate", execValidate_static},
     {"formNodes", formNodes_static},
     {"recalculate", recalculate_static},
-    {"remerge", remerge_static},
-    {"", nullptr}};
+    {"remerge", remerge_static}};
 
 CJX_Form::CJX_Form(CXFA_Form* form) : CJX_Model(form) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Form::~CJX_Form() {}
diff --git a/fxjs/xfa/cjx_hostpseudomodel.cpp b/fxjs/xfa/cjx_hostpseudomodel.cpp
index 20e3bfe496..555381f623 100644
--- a/fxjs/xfa/cjx_hostpseudomodel.cpp
+++ b/fxjs/xfa/cjx_hostpseudomodel.cpp
@@ -61,12 +61,11 @@ const CJX_MethodSpec CJX_HostPseudoModel::MethodSpecs[] = {
     {"print", print_static},
     {"resetData", resetData_static},
     {"response", response_static},
-    {"setFocus", setFocus_static},
-    {"", nullptr}};
+    {"setFocus", setFocus_static}};
 
 CJX_HostPseudoModel::CJX_HostPseudoModel(CScript_HostPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_HostPseudoModel::~CJX_HostPseudoModel() {}
diff --git a/fxjs/xfa/cjx_instancemanager.cpp b/fxjs/xfa/cjx_instancemanager.cpp
index 19c6d72cc3..23048f98a5 100644
--- a/fxjs/xfa/cjx_instancemanager.cpp
+++ b/fxjs/xfa/cjx_instancemanager.cpp
@@ -22,12 +22,11 @@ const CJX_MethodSpec CJX_InstanceManager::MethodSpecs[] = {
     {"insertInstance", insertInstance_static},
     {"moveInstance", moveInstance_static},
     {"removeInstance", removeInstance_static},
-    {"setInstances", setInstances_static},
-    {"", nullptr}};
+    {"setInstances", setInstances_static}};
 
 CJX_InstanceManager::CJX_InstanceManager(CXFA_InstanceManager* mgr)
     : CJX_Node(mgr) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_InstanceManager::~CJX_InstanceManager() {}
diff --git a/fxjs/xfa/cjx_layoutpseudomodel.cpp b/fxjs/xfa/cjx_layoutpseudomodel.cpp
index b80000a0e2..4165a36e57 100644
--- a/fxjs/xfa/cjx_layoutpseudomodel.cpp
+++ b/fxjs/xfa/cjx_layoutpseudomodel.cpp
@@ -43,12 +43,11 @@ const CJX_MethodSpec CJX_LayoutPseudoModel::MethodSpecs[] = {
     {"sheetInBatch", sheetInBatch_static},
     {"w", w_static},
     {"x", x_static},
-    {"y", y_static},
-    {"", nullptr}};
+    {"y", y_static}};
 
 CJX_LayoutPseudoModel::CJX_LayoutPseudoModel(CScript_LayoutPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_LayoutPseudoModel::~CJX_LayoutPseudoModel() {}
diff --git a/fxjs/xfa/cjx_list.cpp b/fxjs/xfa/cjx_list.cpp
index 84bdf7bd07..198804dbed 100644
--- a/fxjs/xfa/cjx_list.cpp
+++ b/fxjs/xfa/cjx_list.cpp
@@ -18,11 +18,10 @@
 const CJX_MethodSpec CJX_List::MethodSpecs[] = {{"append", append_static},
                                                 {"insert", insert_static},
                                                 {"item", item_static},
-                                                {"remove", remove_static},
-                                                {"", nullptr}};
+                                                {"remove", remove_static}};
 
 CJX_List::CJX_List(CXFA_List* list) : CJX_Object(list) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_List::~CJX_List() {}
diff --git a/fxjs/xfa/cjx_logpseudomodel.cpp b/fxjs/xfa/cjx_logpseudomodel.cpp
index e0ed05d0d1..810ddfa008 100644
--- a/fxjs/xfa/cjx_logpseudomodel.cpp
+++ b/fxjs/xfa/cjx_logpseudomodel.cpp
@@ -16,12 +16,11 @@ const CJX_MethodSpec CJX_LogPseudoModel::MethodSpecs[] = {
     {"traceEnabled", traceEnabled_static},
     {"traceActivate", traceActivate_static},
     {"traceDeactivate", traceDeactivate_static},
-    {"trace", trace_static},
-    {"", nullptr}};
+    {"trace", trace_static}};
 
 CJX_LogPseudoModel::CJX_LogPseudoModel(CScript_LogPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_LogPseudoModel::~CJX_LogPseudoModel() {}
diff --git a/fxjs/xfa/cjx_manifest.cpp b/fxjs/xfa/cjx_manifest.cpp
index 6d5da2c60e..0f48b1d28b 100644
--- a/fxjs/xfa/cjx_manifest.cpp
+++ b/fxjs/xfa/cjx_manifest.cpp
@@ -13,11 +13,10 @@
 #include "xfa/fxfa/parser/cxfa_manifest.h"
 
 const CJX_MethodSpec CJX_Manifest::MethodSpecs[] = {
-    {"evaluate", evaluate_static},
-    {"", nullptr}};
+    {"evaluate", evaluate_static}};
 
 CJX_Manifest::CJX_Manifest(CXFA_Manifest* manifest) : CJX_Node(manifest) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Manifest::~CJX_Manifest() {}
diff --git a/fxjs/xfa/cjx_model.cpp b/fxjs/xfa/cjx_model.cpp
index 65084162fb..7ab90e29ba 100644
--- a/fxjs/xfa/cjx_model.cpp
+++ b/fxjs/xfa/cjx_model.cpp
@@ -17,11 +17,10 @@
 const CJX_MethodSpec CJX_Model::MethodSpecs[] = {
     {"clearErrorList", clearErrorList_static},
     {"createNode", createNode_static},
-    {"isCompatibleNS", isCompatibleNS_static},
-    {"", nullptr}};
+    {"isCompatibleNS", isCompatibleNS_static}};
 
 CJX_Model::CJX_Model(CXFA_Node* node) : CJX_Node(node) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Model::~CJX_Model() {}
diff --git a/fxjs/xfa/cjx_node.cpp b/fxjs/xfa/cjx_node.cpp
index dd22fb4ca3..d8a3b1c74f 100644
--- a/fxjs/xfa/cjx_node.cpp
+++ b/fxjs/xfa/cjx_node.cpp
@@ -135,11 +135,10 @@ const CJX_MethodSpec CJX_Node::MethodSpecs[] = {
     {"saveFilteredXML", saveFilteredXML_static},
     {"saveXML", saveXML_static},
     {"setAttribute", setAttribute_static},
-    {"setElement", setElement_static},
-    {"", nullptr}};
+    {"setElement", setElement_static}};
 
 CJX_Node::CJX_Node(CXFA_Node* node) : CJX_Tree(node) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Node::~CJX_Node() = default;
diff --git a/fxjs/xfa/cjx_object.cpp b/fxjs/xfa/cjx_object.cpp
index 81ba1ac3d2..d66483dd74 100644
--- a/fxjs/xfa/cjx_object.cpp
+++ b/fxjs/xfa/cjx_object.cpp
@@ -80,8 +80,9 @@ CJX_Object::~CJX_Object() {
   ClearMapModuleBuffer();
 }
 
-void CJX_Object::DefineMethods(const CJX_MethodSpec method_specs[]) {
-  for (size_t i = 0; method_specs[i].pMethodCall != nullptr; ++i)
+void CJX_Object::DefineMethods(const CJX_MethodSpec method_specs[],
+                               size_t count) {
+  for (size_t i = 0; i < count; ++i)
     method_specs_[method_specs[i].pName] = method_specs[i].pMethodCall;
 }
 
diff --git a/fxjs/xfa/cjx_object.h b/fxjs/xfa/cjx_object.h
index cb8350d2b1..3b9867ed4a 100644
--- a/fxjs/xfa/cjx_object.h
+++ b/fxjs/xfa/cjx_object.h
@@ -116,7 +116,7 @@ class CJX_Object {
   void ThrowParamCountMismatchException(const WideString& method) const;
 
  protected:
-  void DefineMethods(const CJX_MethodSpec method_specs[]);
+  void DefineMethods(const CJX_MethodSpec method_specs[], size_t count);
 
   void MoveBufferMapData(CXFA_Object* pSrcModule, CXFA_Object* pDstModule);
   void SetMapModuleString(void* pKey, const WideStringView& wsValue);
diff --git a/fxjs/xfa/cjx_packet.cpp b/fxjs/xfa/cjx_packet.cpp
index 0040951ac3..2203d9bc9e 100644
--- a/fxjs/xfa/cjx_packet.cpp
+++ b/fxjs/xfa/cjx_packet.cpp
@@ -15,11 +15,10 @@
 const CJX_MethodSpec CJX_Packet::MethodSpecs[] = {
     {"getAttribute", getAttribute_static},
     {"removeAttribute", removeAttribute_static},
-    {"setAttribute", setAttribute_static},
-    {"", nullptr}};
+    {"setAttribute", setAttribute_static}};
 
 CJX_Packet::CJX_Packet(CXFA_Packet* packet) : CJX_Node(packet) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Packet::~CJX_Packet() {}
diff --git a/fxjs/xfa/cjx_signaturepseudomodel.cpp b/fxjs/xfa/cjx_signaturepseudomodel.cpp
index 6b39ac2488..202532c6ca 100644
--- a/fxjs/xfa/cjx_signaturepseudomodel.cpp
+++ b/fxjs/xfa/cjx_signaturepseudomodel.cpp
@@ -16,13 +16,12 @@ const CJX_MethodSpec CJX_SignaturePseudoModel::MethodSpecs[] = {
     {"verify", verifySignature_static},
     {"sign", sign_static},
     {"enumerate", enumerate_static},
-    {"clear", clear_static},
-    {"", nullptr}};
+    {"clear", clear_static}};
 
 CJX_SignaturePseudoModel::CJX_SignaturePseudoModel(
     CScript_SignaturePseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_SignaturePseudoModel::~CJX_SignaturePseudoModel() {}
diff --git a/fxjs/xfa/cjx_source.cpp b/fxjs/xfa/cjx_source.cpp
index 17512b3e63..85742fee18 100644
--- a/fxjs/xfa/cjx_source.cpp
+++ b/fxjs/xfa/cjx_source.cpp
@@ -29,11 +29,10 @@ const CJX_MethodSpec CJX_Source::MethodSpecs[] = {
     {"requery", requery_static},
     {"resync", resync_static},
     {"update", update_static},
-    {"updateBatch", updateBatch_static},
-    {"", nullptr}};
+    {"updateBatch", updateBatch_static}};
 
 CJX_Source::CJX_Source(CXFA_Source* src) : CJX_Node(src) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Source::~CJX_Source() {}
diff --git a/fxjs/xfa/cjx_subform.cpp b/fxjs/xfa/cjx_subform.cpp
index a7e1d2a587..fcf4cffd3e 100644
--- a/fxjs/xfa/cjx_subform.cpp
+++ b/fxjs/xfa/cjx_subform.cpp
@@ -20,11 +20,10 @@ const CJX_MethodSpec CJX_Subform::MethodSpecs[] = {
     {"execCalculate", execCalculate_static},
     {"execEvent", execEvent_static},
     {"execInitialize", execInitialize_static},
-    {"execValidate", execValidate_static},
-    {"", nullptr}};
+    {"execValidate", execValidate_static}};
 
 CJX_Subform::CJX_Subform(CXFA_Node* node) : CJX_Container(node) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Subform::~CJX_Subform() {}
diff --git a/fxjs/xfa/cjx_template.cpp b/fxjs/xfa/cjx_template.cpp
index 48507c3494..8ba2bcab9e 100644
--- a/fxjs/xfa/cjx_template.cpp
+++ b/fxjs/xfa/cjx_template.cpp
@@ -19,11 +19,10 @@ const CJX_MethodSpec CJX_Template::MethodSpecs[] = {
     {"execValidate", execValidate_static},
     {"formNodes", formNodes_static},
     {"recalculate", recalculate_static},
-    {"remerge", remerge_static},
-    {"", nullptr}};
+    {"remerge", remerge_static}};
 
 CJX_Template::CJX_Template(CXFA_Template* tmpl) : CJX_Model(tmpl) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Template::~CJX_Template() {}
diff --git a/fxjs/xfa/cjx_tree.cpp b/fxjs/xfa/cjx_tree.cpp
index 6c5e5abd89..8e3143ecc7 100644
--- a/fxjs/xfa/cjx_tree.cpp
+++ b/fxjs/xfa/cjx_tree.cpp
@@ -21,11 +21,10 @@
 
 const CJX_MethodSpec CJX_Tree::MethodSpecs[] = {
     {"resolveNode", resolveNode_static},
-    {"resolveNodes", resolveNodes_static},
-    {"", nullptr}};
+    {"resolveNodes", resolveNodes_static}};
 
 CJX_Tree::CJX_Tree(CXFA_Object* obj) : CJX_Object(obj) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_Tree::~CJX_Tree() {}
diff --git a/fxjs/xfa/cjx_treelist.cpp b/fxjs/xfa/cjx_treelist.cpp
index bb9e4167f8..b91a0b7541 100644
--- a/fxjs/xfa/cjx_treelist.cpp
+++ b/fxjs/xfa/cjx_treelist.cpp
@@ -16,11 +16,10 @@
 #include "xfa/fxfa/parser/cxfa_treelist.h"
 
 const CJX_MethodSpec CJX_TreeList::MethodSpecs[] = {
-    {"namedItem", namedItem_static},
-    {"", nullptr}};
+    {"namedItem", namedItem_static}};
 
 CJX_TreeList::CJX_TreeList(CXFA_TreeList* list) : CJX_List(list) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_TreeList::~CJX_TreeList() {}
diff --git a/fxjs/xfa/cjx_wsdlconnection.cpp b/fxjs/xfa/cjx_wsdlconnection.cpp
index a1d673fae5..1d0c306f14 100644
--- a/fxjs/xfa/cjx_wsdlconnection.cpp
+++ b/fxjs/xfa/cjx_wsdlconnection.cpp
@@ -13,12 +13,11 @@
 #include "xfa/fxfa/parser/cxfa_wsdlconnection.h"
 
 const CJX_MethodSpec CJX_WsdlConnection::MethodSpecs[] = {
-    {"execute", execute_static},
-    {"", nullptr}};
+    {"execute", execute_static}};
 
 CJX_WsdlConnection::CJX_WsdlConnection(CXFA_WsdlConnection* connection)
     : CJX_Node(connection) {
-  DefineMethods(MethodSpecs);
+  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
 }
 
 CJX_WsdlConnection::~CJX_WsdlConnection() {}