[ScriptInterpreter] Pass the debugger instead of the command interpreter

As discussed in D61090, there's no good reason for the script
interpreter to depend on the command interpreter. When looking at the
code, it becomes clear that we mostly use the command interpreter as a
way to access the debugger. Hence, it makes more sense to just pass that
to the script interpreter directly.

This is part 1 out of 2. I have another patch in the pipeline that
changes the ownership of the script interpreter to the debugger as well,
but I didn't get around to finish that today.

Differential revision: https://reviews.llvm.org/D61172

llvm-svn: 359330

lldb/include/lldb/Core/PluginManager.h

@@ -263,7 +263,7 @@ class PluginManager {
 
   static lldb::ScriptInterpreterSP
   GetScriptInterpreterForLanguage(lldb::ScriptLanguage script_lang,
-                                  CommandInterpreter &interpreter);
+                                  Debugger &debugger);
 
   // StructuredDataPlugin
 

lldb/include/lldb/Interpreter/ScriptInterpreter.h

@@ -52,8 +52,7 @@ class ScriptInterpreter : public PluginInterface {
     eScriptReturnTypeOpaqueObject
   } ScriptReturnType;
 
-  ScriptInterpreter(CommandInterpreter &interpreter,
-                    lldb::ScriptLanguage script_lang);
+  ScriptInterpreter(Debugger &debugger, lldb::ScriptLanguage script_lang);
 
   ~ScriptInterpreter() override;
 
@@ -247,7 +246,7 @@ class ScriptInterpreter : public PluginInterface {
                                    lldb::BreakpointSP &bkpt_sp) {
     return StructuredData::GenericSP();
   }
-  
+
   virtual bool
   ScriptedBreakpointResolverSearchCallback(StructuredData::GenericSP implementor_sp,
                                            SymbolContext *sym_ctx)
@@ -460,8 +459,6 @@ class ScriptInterpreter : public PluginInterface {
 
   int GetMasterFileDescriptor();
 
-  CommandInterpreter &GetCommandInterpreter();
-
   static std::string LanguageToString(lldb::ScriptLanguage language);
 
   static lldb::ScriptLanguage StringToLanguage(const llvm::StringRef &string);
@@ -471,7 +468,7 @@ class ScriptInterpreter : public PluginInterface {
   lldb::ScriptLanguage GetLanguage() { return m_script_lang; }
 
 protected:
-  CommandInterpreter &m_interpreter;
+  Debugger &m_debugger;
   lldb::ScriptLanguage m_script_lang;
 };
 

lldb/include/lldb/lldb-private-interfaces.h

@@ -66,7 +66,7 @@ typedef lldb::ProcessSP (*ProcessCreateInstance)(
     lldb::TargetSP target_sp, lldb::ListenerSP listener_sp,
     const FileSpec *crash_file_path);
 typedef lldb::ScriptInterpreterSP (*ScriptInterpreterCreateInstance)(
-    CommandInterpreter &interpreter);
+    Debugger &debugger);
 typedef SymbolFile *(*SymbolFileCreateInstance)(ObjectFile *obj_file);
 typedef SymbolVendor *(*SymbolVendorCreateInstance)(
     const lldb::ModuleSP &module_sp,

lldb/source/Core/PluginManager.cpp

@@ -1516,8 +1516,9 @@ PluginManager::GetScriptInterpreterCreateCallbackAtIndex(uint32_t idx) {
   return nullptr;
 }
 
-lldb::ScriptInterpreterSP PluginManager::GetScriptInterpreterForLanguage(
-    lldb::ScriptLanguage script_lang, CommandInterpreter &interpreter) {
+lldb::ScriptInterpreterSP
+PluginManager::GetScriptInterpreterForLanguage(lldb::ScriptLanguage script_lang,
+                                               Debugger &debugger) {
   std::lock_guard<std::recursive_mutex> guard(GetScriptInterpreterMutex());
   ScriptInterpreterInstances &instances = GetScriptInterpreterInstances();
 
@@ -1528,12 +1529,12 @@ lldb::ScriptInterpreterSP PluginManager::GetScriptInterpreterForLanguage(
       none_instance = pos->create_callback;
 
     if (script_lang == pos->language)
-      return pos->create_callback(interpreter);
+      return pos->create_callback(debugger);
   }
 
   // If we didn't find one, return the ScriptInterpreter for the null language.
   assert(none_instance != nullptr);
-  return none_instance(interpreter);
+  return none_instance(debugger);
 }
 
 #pragma mark -

lldb/source/Interpreter/CommandInterpreter.cpp

@@ -2507,7 +2507,7 @@ ScriptInterpreter *CommandInterpreter::GetScriptInterpreter(bool can_create) {
       return nullptr;
     lldb::ScriptLanguage script_lang = GetDebugger().GetScriptLanguage();
     m_script_interpreter_sp =
-        PluginManager::GetScriptInterpreterForLanguage(script_lang, *this);
+        PluginManager::GetScriptInterpreterForLanguage(script_lang, m_debugger);
   }
   return m_script_interpreter_sp.get();
 }

lldb/source/Interpreter/ScriptInterpreter.cpp

@@ -21,16 +21,12 @@
 using namespace lldb;
 using namespace lldb_private;
 
-ScriptInterpreter::ScriptInterpreter(CommandInterpreter &interpreter,
+ScriptInterpreter::ScriptInterpreter(Debugger &debugger,
                                      lldb::ScriptLanguage script_lang)
-    : m_interpreter(interpreter), m_script_lang(script_lang) {}
+    : m_debugger(debugger), m_script_lang(script_lang) {}
 
 ScriptInterpreter::~ScriptInterpreter() {}
 
-CommandInterpreter &ScriptInterpreter::GetCommandInterpreter() {
-  return m_interpreter;
-}
-
 void ScriptInterpreter::CollectDataForBreakpointCommandCallback(
     std::vector<BreakpointOptions *> &bp_options_vec,
     CommandReturnObject &result) {

lldb/source/Plugins/ScriptInterpreter/None/ScriptInterpreterNone.cpp

@@ -10,7 +10,6 @@
 #include "lldb/Core/Debugger.h"
 #include "lldb/Core/PluginManager.h"
 #include "lldb/Core/StreamFile.h"
-#include "lldb/Interpreter/CommandInterpreter.h"
 #include "lldb/Utility/Stream.h"
 #include "lldb/Utility/StringList.h"
 
@@ -21,21 +20,21 @@
 using namespace lldb;
 using namespace lldb_private;
 
-ScriptInterpreterNone::ScriptInterpreterNone(CommandInterpreter &interpreter)
-    : ScriptInterpreter(interpreter, eScriptLanguageNone) {}
+ScriptInterpreterNone::ScriptInterpreterNone(Debugger &debugger)
+    : ScriptInterpreter(debugger, eScriptLanguageNone) {}
 
 ScriptInterpreterNone::~ScriptInterpreterNone() {}
 
 bool ScriptInterpreterNone::ExecuteOneLine(llvm::StringRef command,
                                            CommandReturnObject *,
                                            const ExecuteScriptOptions &) {
-  m_interpreter.GetDebugger().GetErrorFile()->PutCString(
+  m_debugger.GetErrorFile()->PutCString(
       "error: there is no embedded script interpreter in this mode.\n");
   return false;
 }
 
 void ScriptInterpreterNone::ExecuteInterpreterLoop() {
-  m_interpreter.GetDebugger().GetErrorFile()->PutCString(
+  m_debugger.GetErrorFile()->PutCString(
       "error: there is no embedded script interpreter in this mode.\n");
 }
 
@@ -52,8 +51,8 @@ void ScriptInterpreterNone::Initialize() {
 void ScriptInterpreterNone::Terminate() {}
 
 lldb::ScriptInterpreterSP
-ScriptInterpreterNone::CreateInstance(CommandInterpreter &interpreter) {
-  return std::make_shared<ScriptInterpreterNone>(interpreter);
+ScriptInterpreterNone::CreateInstance(Debugger &debugger) {
+  return std::make_shared<ScriptInterpreterNone>(debugger);
 }
 
 lldb_private::ConstString ScriptInterpreterNone::GetPluginNameStatic() {

lldb/source/Plugins/ScriptInterpreter/None/ScriptInterpreterNone.h

@@ -15,7 +15,7 @@ namespace lldb_private {
 
 class ScriptInterpreterNone : public ScriptInterpreter {
 public:
-  ScriptInterpreterNone(CommandInterpreter &interpreter);
+  ScriptInterpreterNone(Debugger &debugger);
 
   ~ScriptInterpreterNone() override;
 
@@ -30,8 +30,7 @@ class ScriptInterpreterNone : public ScriptInterpreter {
 
   static void Terminate();
 
-  static lldb::ScriptInterpreterSP
-  CreateInstance(CommandInterpreter &interpreter);
+  static lldb::ScriptInterpreterSP CreateInstance(Debugger &debugger);
 
   static lldb_private::ConstString GetPluginNameStatic();
 

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

@@ -441,15 +441,13 @@ ScriptInterpreterPythonImpl::Locker::~Locker() {
   DoFreeLock();
 }
 
-ScriptInterpreterPythonImpl::ScriptInterpreterPythonImpl(
-    CommandInterpreter &interpreter)
-    : ScriptInterpreterPython(interpreter), m_saved_stdin(), m_saved_stdout(),
+ScriptInterpreterPythonImpl::ScriptInterpreterPythonImpl(Debugger &debugger)
+    : ScriptInterpreterPython(debugger), m_saved_stdin(), m_saved_stdout(),
       m_saved_stderr(), m_main_module(),
       m_session_dict(PyInitialValue::Invalid),
       m_sys_module_dict(PyInitialValue::Invalid), m_run_one_line_function(),
       m_run_one_line_str_global(),
-      m_dictionary_name(
-          interpreter.GetDebugger().GetInstanceName().AsCString()),
+      m_dictionary_name(m_debugger.GetInstanceName().AsCString()),
       m_terminal_state(), m_active_io_handler(eIOHandlerNone),
       m_session_is_active(false), m_pty_slave_is_open(false),
       m_valid_session(true), m_lock_count(0), m_command_thread_state(nullptr) {
@@ -495,8 +493,7 @@ ScriptInterpreterPythonImpl::ScriptInterpreterPythonImpl(
 
   run_string.Printf("run_one_line (%s, 'lldb.debugger_unique_id = %" PRIu64
                     "; pydoc.pager = pydoc.plainpager')",
-                    m_dictionary_name.c_str(),
-                    interpreter.GetDebugger().GetID());
+                    m_dictionary_name.c_str(), m_debugger.GetID());
   PyRun_SimpleString(run_string.GetData());
 }
 
@@ -549,7 +546,7 @@ def function (frame, bp_loc, internal_dict):
 void ScriptInterpreterPythonImpl::IOHandlerInputComplete(IOHandler &io_handler,
                                                          std::string &data) {
   io_handler.SetIsDone(true);
-  bool batch_mode = m_interpreter.GetBatchCommandMode();
+  bool batch_mode = m_debugger.GetCommandInterpreter().GetBatchCommandMode();
 
   switch (m_active_io_handler) {
   case eIOHandlerNone:
@@ -608,8 +605,8 @@ void ScriptInterpreterPythonImpl::IOHandlerInputComplete(IOHandler &io_handler,
 }
 
 lldb::ScriptInterpreterSP
-ScriptInterpreterPythonImpl::CreateInstance(CommandInterpreter &interpreter) {
-  return std::make_shared<ScriptInterpreterPythonImpl>(interpreter);
+ScriptInterpreterPythonImpl::CreateInstance(Debugger &debugger) {
+  return std::make_shared<ScriptInterpreterPythonImpl>(debugger);
 }
 
 void ScriptInterpreterPythonImpl::ResetOutputFileHandle(FILE *fh) {}
@@ -711,11 +708,10 @@ bool ScriptInterpreterPythonImpl::EnterSession(uint16_t on_entry_flags,
 
   if (on_entry_flags & Locker::InitGlobals) {
     run_string.Printf("run_one_line (%s, 'lldb.debugger_unique_id = %" PRIu64,
-                      m_dictionary_name.c_str(),
-                      GetCommandInterpreter().GetDebugger().GetID());
+                      m_dictionary_name.c_str(), m_debugger.GetID());
     run_string.Printf(
         "; lldb.debugger = lldb.SBDebugger.FindDebuggerWithID (%" PRIu64 ")",
-        GetCommandInterpreter().GetDebugger().GetID());
+        m_debugger.GetID());
     run_string.PutCString("; lldb.target = lldb.debugger.GetSelectedTarget()");
     run_string.PutCString("; lldb.process = lldb.target.GetProcess()");
     run_string.PutCString("; lldb.thread = lldb.process.GetSelectedThread ()");
@@ -725,11 +721,10 @@ bool ScriptInterpreterPythonImpl::EnterSession(uint16_t on_entry_flags,
     // If we aren't initing the globals, we should still always set the
     // debugger (since that is always unique.)
     run_string.Printf("run_one_line (%s, 'lldb.debugger_unique_id = %" PRIu64,
-                      m_dictionary_name.c_str(),
-                      GetCommandInterpreter().GetDebugger().GetID());
+                      m_dictionary_name.c_str(), m_debugger.GetID());
     run_string.Printf(
         "; lldb.debugger = lldb.SBDebugger.FindDebuggerWithID (%" PRIu64 ")",
-        GetCommandInterpreter().GetDebugger().GetID());
+        m_debugger.GetID());
     run_string.PutCString("')");
   }
 
@@ -746,8 +741,7 @@ bool ScriptInterpreterPythonImpl::EnterSession(uint16_t on_entry_flags,
     lldb::StreamFileSP out_sp;
     lldb::StreamFileSP err_sp;
     if (!in_file.IsValid() || !out_file.IsValid() || !err_file.IsValid())
-      m_interpreter.GetDebugger().AdoptTopIOHandlerFilesIfInvalid(in_sp, out_sp,
-                                                                  err_sp);
+      m_debugger.AdoptTopIOHandlerFilesIfInvalid(in_sp, out_sp, err_sp);
 
     if (on_entry_flags & Locker::NoSTDIN) {
       m_saved_stdin.Reset();
@@ -871,7 +865,7 @@ bool ScriptInterpreterPythonImpl::ExecuteOneLine(
     // another string to pass to PyRun_SimpleString messes up the escaping.  So
     // we use the following more complicated method to pass the command string
     // directly down to Python.
-    Debugger &debugger = m_interpreter.GetDebugger();
+    Debugger &debugger = m_debugger;
 
     StreamFileSP input_file_sp;
     StreamFileSP output_file_sp;
@@ -1018,7 +1012,7 @@ void ScriptInterpreterPythonImpl::ExecuteInterpreterLoop() {
   static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
   Timer scoped_timer(func_cat, LLVM_PRETTY_FUNCTION);
 
-  Debugger &debugger = GetCommandInterpreter().GetDebugger();
+  Debugger &debugger = m_debugger;
 
   // At the moment, the only time the debugger does not have an input file
   // handle is when this is called directly from Python, in which case it is
@@ -1274,14 +1268,15 @@ void ScriptInterpreterPythonImpl::CollectDataForBreakpointCommandCallback(
     std::vector<BreakpointOptions *> &bp_options_vec,
     CommandReturnObject &result) {
   m_active_io_handler = eIOHandlerBreakpoint;
-  m_interpreter.GetPythonCommandsFromIOHandler("    ", *this, true,
-                                               &bp_options_vec);
+  m_debugger.GetCommandInterpreter().GetPythonCommandsFromIOHandler(
+      "    ", *this, true, &bp_options_vec);
 }
 
 void ScriptInterpreterPythonImpl::CollectDataForWatchpointCommandCallback(
     WatchpointOptions *wp_options, CommandReturnObject &result) {
   m_active_io_handler = eIOHandlerWatchpoint;
-  m_interpreter.GetPythonCommandsFromIOHandler("    ", *this, true, wp_options);
+  m_debugger.GetCommandInterpreter().GetPythonCommandsFromIOHandler(
+      "    ", *this, true, wp_options);
 }
 
 void ScriptInterpreterPythonImpl::SetBreakpointCommandCallbackFunction(
@@ -1290,8 +1285,9 @@ void ScriptInterpreterPythonImpl::SetBreakpointCommandCallbackFunction(
   std::string oneliner("return ");
   oneliner += function_name;
   oneliner += "(frame, bp_loc, internal_dict)";
-  m_interpreter.GetScriptInterpreter()->SetBreakpointCommandCallback(
-      bp_options, oneliner.c_str());
+  m_debugger.GetCommandInterpreter()
+      .GetScriptInterpreter()
+      ->SetBreakpointCommandCallback(bp_options, oneliner.c_str());
 }
 
 Status ScriptInterpreterPythonImpl::SetBreakpointCommandCallback(
@@ -2109,8 +2105,7 @@ ScriptInterpreterPythonImpl::CreateSyntheticScriptedProvider(
 
 StructuredData::GenericSP
 ScriptInterpreterPythonImpl::CreateScriptCommandObject(const char *class_name) {
-  DebuggerSP debugger_sp(
-      GetCommandInterpreter().GetDebugger().shared_from_this());
+  DebuggerSP debugger_sp(m_debugger.shared_from_this());
 
   if (class_name == nullptr || class_name[0] == '\0')
     return StructuredData::GenericSP();
@@ -2718,7 +2713,7 @@ bool ScriptInterpreterPythonImpl::LoadScriptingModule(
     return false;
   }
 
-  lldb::DebuggerSP debugger_sp = m_interpreter.GetDebugger().shared_from_this();
+  lldb::DebuggerSP debugger_sp = m_debugger.shared_from_this();
 
   {
     FileSpec target_file(pathname);
@@ -2912,7 +2907,7 @@ bool ScriptInterpreterPythonImpl::RunScriptBasedCommand(
     return false;
   }
 
-  lldb::DebuggerSP debugger_sp = m_interpreter.GetDebugger().shared_from_this();
+  lldb::DebuggerSP debugger_sp = m_debugger.shared_from_this();
   lldb::ExecutionContextRefSP exe_ctx_ref_sp(new ExecutionContextRef(exe_ctx));
 
   if (!debugger_sp.get()) {
@@ -2956,7 +2951,7 @@ bool ScriptInterpreterPythonImpl::RunScriptBasedCommand(
     return false;
   }
 
-  lldb::DebuggerSP debugger_sp = m_interpreter.GetDebugger().shared_from_this();
+  lldb::DebuggerSP debugger_sp = m_debugger.shared_from_this();
   lldb::ExecutionContextRefSP exe_ctx_ref_sp(new ExecutionContextRef(exe_ctx));
 
   if (!debugger_sp.get()) {

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

@@ -36,8 +36,8 @@ class ScriptInterpreterPython : public ScriptInterpreter,
     }
   };
 
-  ScriptInterpreterPython(CommandInterpreter &interpreter)
-      : ScriptInterpreter(interpreter, lldb::eScriptLanguagePython),
+  ScriptInterpreterPython(Debugger &debugger)
+      : ScriptInterpreter(debugger, lldb::eScriptLanguagePython),
         IOHandlerDelegateMultiline("DONE") {}
 
   static void Initialize();

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

@@ -29,7 +29,7 @@ class ScriptInterpreterPythonImpl : public ScriptInterpreterPython {
 public:
   friend class IOHandlerPythonInterpreter;
 
-  ScriptInterpreterPythonImpl(CommandInterpreter &interpreter);
+  ScriptInterpreterPythonImpl(Debugger &debugger);
 
   ~ScriptInterpreterPythonImpl() override;
 
@@ -273,8 +273,7 @@ class ScriptInterpreterPythonImpl : public ScriptInterpreterPython {
   void IOHandlerInputComplete(IOHandler &io_handler,
                               std::string &data) override;
 
-  static lldb::ScriptInterpreterSP
-  CreateInstance(CommandInterpreter &interpreter);
+  static lldb::ScriptInterpreterSP CreateInstance(Debugger &debugger);
 
   // PluginInterface protocol
   lldb_private::ConstString GetPluginName() override;