[lldb/ScriptInterpreter] Remove can_reload which is always true (NFC)

The `-r` option for `command script import` is there for legacy
compatibility, however the can_reload flag is always set to true. This
patch removes the flag and any code that relies on it being false.

lldb/include/lldb/Interpreter/ScriptInterpreter.h

@@ -457,7 +457,7 @@ public:
   virtual bool CheckObjectExists(const char *name) { return false; }
 
   virtual bool
-  LoadScriptingModule(const char *filename, bool can_reload, bool init_session,
+  LoadScriptingModule(const char *filename, bool init_session,
                       lldb_private::Status &error,
                       StructuredData::ObjectSP *module_sp = nullptr);
 

lldb/source/Commands/CommandObjectCommands.cpp

@@ -1403,7 +1403,7 @@ protected:
 
       switch (short_option) {
       case 'r':
-        m_allow_reload = true;
+        // NO-OP
         break;
       default:
         llvm_unreachable("Unimplemented option");
@@ -1413,16 +1413,11 @@ protected:
     }
 
     void OptionParsingStarting(ExecutionContext *execution_context) override {
-      m_allow_reload = true;
     }
 
     llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
       return llvm::makeArrayRef(g_script_import_options);
     }
-
-    // Instance variables to hold the values for command options.
-
-    bool m_allow_reload;
   };
 
   bool DoExecute(Args &command, CommandReturnObject &result) override {
@@ -1446,7 +1441,7 @@ protected:
       // more)
       m_exe_ctx.Clear();
       if (GetDebugger().GetScriptInterpreter()->LoadScriptingModule(
-              entry.c_str(), m_options.m_allow_reload, init_session, error)) {
+              entry.c_str(), init_session, error)) {
         result.SetStatus(eReturnStatusSuccessFinishNoResult);
       } else {
         result.AppendErrorWithFormat("module importing failed: %s",

lldb/source/Core/Module.cpp

@@ -1512,11 +1512,9 @@ bool Module::LoadScriptingResourceInTarget(Target *target, Status &error,
             }
             StreamString scripting_stream;
             scripting_fspec.Dump(scripting_stream.AsRawOstream());
-            const bool can_reload = true;
             const bool init_lldb_globals = false;
             bool did_load = script_interpreter->LoadScriptingModule(
-                scripting_stream.GetData(), can_reload, init_lldb_globals,
-                error);
+                scripting_stream.GetData(), init_lldb_globals, error);
             if (!did_load)
               return false;
           }

lldb/source/Interpreter/ScriptInterpreter.cpp

@@ -43,8 +43,8 @@ void ScriptInterpreter::CollectDataForWatchpointCommandCallback(
 }
 
 bool ScriptInterpreter::LoadScriptingModule(
-    const char *filename, bool can_reload, bool init_session,
-    lldb_private::Status &error, StructuredData::ObjectSP *module_sp) {
+    const char *filename, bool init_session, lldb_private::Status &error,
+    StructuredData::ObjectSP *module_sp) {
   error.SetErrorString(
       "This script interpreter does not support importing modules.");
   return false;

lldb/source/Plugins/OperatingSystem/Python/OperatingSystemPython.cpp

@@ -90,13 +90,12 @@ OperatingSystemPython::OperatingSystemPython(lldb_private::Process *process,
         python_module_path.GetFilename().AsCString(""));
     if (!os_plugin_class_name.empty()) {
       const bool init_session = false;
-      const bool allow_reload = true;
       char python_module_path_cstr[PATH_MAX];
       python_module_path.GetPath(python_module_path_cstr,
                                  sizeof(python_module_path_cstr));
       Status error;
-      if (m_interpreter->LoadScriptingModule(
-              python_module_path_cstr, allow_reload, init_session, error)) {
+      if (m_interpreter->LoadScriptingModule(python_module_path_cstr,
+                                             init_session, error)) {
         // Strip the ".py" extension if there is one
         size_t py_extension_pos = os_plugin_class_name.rfind(".py");
         if (py_extension_pos != std::string::npos)

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -2057,8 +2057,7 @@ ScriptInterpreterPythonImpl::LoadPluginModule(const FileSpec &file_spec,
 
   StructuredData::ObjectSP module_sp;
 
-  if (LoadScriptingModule(file_spec.GetPath().c_str(), true, true, error,
-                          &module_sp))
+  if (LoadScriptingModule(file_spec.GetPath().c_str(), true, error, &module_sp))
     return module_sp;
 
   return StructuredData::ObjectSP();
@@ -2737,8 +2736,8 @@ uint64_t replace_all(std::string &str, const std::string &oldStr,
 }
 
 bool ScriptInterpreterPythonImpl::LoadScriptingModule(
-    const char *pathname, bool can_reload, bool init_session,
-    lldb_private::Status &error, StructuredData::ObjectSP *module_sp) {
+    const char *pathname, bool init_session, lldb_private::Status &error,
+    StructuredData::ObjectSP *module_sp) {
   if (!pathname || !pathname[0]) {
     error.SetErrorString("invalid pathname");
     return false;
@@ -2838,11 +2837,6 @@ bool ScriptInterpreterPythonImpl::LoadScriptingModule(
 
     bool was_imported = (was_imported_globally || was_imported_locally);
 
-    if (was_imported && !can_reload) {
-      error.SetErrorString("module already imported");
-      return false;
-    }
-
     // now actually do the import
     command_stream.Clear();
 

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h

@@ -224,7 +224,7 @@ public:
                               std::string &output, Status &error) override;
 
   bool
-  LoadScriptingModule(const char *filename, bool can_reload, bool init_session,
+  LoadScriptingModule(const char *filename, bool init_session,
                       lldb_private::Status &error,
                       StructuredData::ObjectSP *module_sp = nullptr) override;