[lldb/Plugins] Use default initializers for StructuredData::*SP (NFC)

[mib]

Summary

This patch replaces the ScriptedProcessInterface getters to return
default initializers for StructureData shared pointers instead of
returning a null pointer.

Signed-off-by: Med Ismail Bennani <[e-mail]>

lldb/include/lldb/Interpreter/ScriptedProcessInterface.h

 
 namespace lldb_private {
 class ScriptedProcessInterface : virtual public ScriptedInterface {
 public:
   StructuredData::GenericSP
   CreatePluginObject(llvm::StringRef class_name, ExecutionContext &exe_ctx,
                      StructuredData::DictionarySP args_sp,
                      StructuredData::Generic *script_obj = nullptr) override {
-    return nullptr;
+    return {};
   }
 
   virtual Status Launch() { return Status("ScriptedProcess did not launch"); }
 
   virtual Status Resume() { return Status("ScriptedProcess did not resume"); }
 
   virtual bool ShouldStop() { return true; }
 
   virtual Status Stop() { return Status("ScriptedProcess did not stop"); }
 
   virtual llvm::Optional<MemoryRegionInfo>
   GetMemoryRegionContainingAddress(lldb::addr_t address, Status &error) {
     error.SetErrorString("ScriptedProcess have no memory region.");
     return {};
   }
 
-  virtual StructuredData::DictionarySP GetThreadsInfo() { return nullptr; }
+  virtual StructuredData::DictionarySP GetThreadsInfo() { return {}; }
 
   virtual StructuredData::DictionarySP GetThreadWithID(lldb::tid_t tid) {
-    return nullptr;
+    return {};
   }
 
   virtual StructuredData::DictionarySP GetRegistersForThread(lldb::tid_t tid) {
-    return nullptr;
+    return {};
   }
 
   virtual lldb::DataExtractorSP
   ReadMemoryAtAddress(lldb::addr_t address, size_t size, Status &error) {
-    return nullptr;
+    return {};
   }
 
-  virtual StructuredData::ArraySP GetLoadedImages() { return nullptr; }
+  virtual StructuredData::ArraySP GetLoadedImages() { return {}; }
 
   virtual lldb::pid_t GetProcessID() { return LLDB_INVALID_PROCESS_ID; }
 
   virtual bool IsAlive() { return true; }
 
   virtual llvm::Optional<std::string> GetScriptedThreadPluginName() {
     return llvm::None;
   }
 
-  virtual StructuredData::DictionarySP GetMetadata() { return nullptr; }
+  virtual StructuredData::DictionarySP GetMetadata() { return {}; }
 
 protected:
   friend class ScriptedThread;
   virtual lldb::ScriptedThreadInterfaceSP CreateScriptedThreadInterface() {
-    return nullptr;
+    return {};
   }
 };
 
 class ScriptedThreadInterface : virtual public ScriptedInterface {
 public:
   StructuredData::GenericSP
   CreatePluginObject(llvm::StringRef class_name, ExecutionContext &exe_ctx,
                      StructuredData::DictionarySP args_sp,
                      StructuredData::Generic *script_obj = nullptr) override {
-    return nullptr;
+    return {};
   }
 
   virtual lldb::tid_t GetThreadID() { return LLDB_INVALID_THREAD_ID; }
 
   virtual llvm::Optional<std::string> GetName() { return llvm::None; }
 
   virtual lldb::StateType GetState() { return lldb::eStateInvalid; }
 
   virtual llvm::Optional<std::string> GetQueue() { return llvm::None; }
 
-  virtual StructuredData::DictionarySP GetStopReason() { return nullptr; }
+  virtual StructuredData::DictionarySP GetStopReason() { return {}; }
 
-  virtual StructuredData::ArraySP GetStackFrames() { return nullptr; }
+  virtual StructuredData::ArraySP GetStackFrames() { return {}; }
 
-  virtual StructuredData::DictionarySP GetRegisterInfo() { return nullptr; }
+  virtual StructuredData::DictionarySP GetRegisterInfo() { return {}; }
 
   virtual llvm::Optional<std::string> GetRegisterContext() {
     return llvm::None;
   }
 
-  virtual StructuredData::ArraySP GetExtendedInfo() { return nullptr; }
+  virtual StructuredData::ArraySP GetExtendedInfo() { return {}; }
 };
 } // namespace lldb_private
 
 #endif // LLDB_INTERPRETER_SCRIPTEDPROCESSINTERFACE_H