fix compile, fix clang-format, add demo window debug setting, add setting to stop at entry or go to main directly

.clang-format

@@ -84,5 +84,3 @@ Standard: Cpp11
 TabWidth: '2'
 UseTab: ForIndentation
 CommentPragmas: '^\\.+'
-
-...

src/backend/lldb/lldb_backend.cpp

@@ -30,9 +30,10 @@ namespace
 
 LLDBBackend::~LLDBBackend() {}
 
-LLDBBackend::LLDBBackend(std::string filename)
+LLDBBackend::LLDBBackend(std::string filename, bool stop_at_entry)
 {
-	_filename = filename;
+	_filename      = filename;
+	_stop_at_entry = stop_at_entry;
 	char buf[256];
 	buf[0] = '\0';
 	pthread_getname_np(pthread_self(), buf, sizeof(buf));
@@ -60,11 +61,21 @@ void LLDBBackend::start()
 	}
 	_process = _target.Launch(listener, argv, nullptr, nullptr, nullptr, nullptr,
 	                          cwd.c_str(), lldb::LaunchFlags::eLaunchFlagNone,
-	                          true, error);
+	                          _stop_at_entry, error);
 	{
 		pthread_setname_np(pthread_self(), buf);
 	}
 
+	if (!_stop_at_entry)
+	{
+		// Create a breakpoint at main
+		auto bp = _target.BreakpointCreateByName("main");
+		if (!bp.IsValid())
+		{
+			spdlog::warn("Failed to create breakpoint for main");
+		}
+	}
+
 	_msg_thread = std::thread{[this]() {
 		auto ptr = this->shared_from_this();
 		static_cast<LLDBBackend *>(ptr.get())->run_msg_loop();

src/backend/lldb/lldb_backend.h

@@ -90,7 +90,7 @@ namespace dbgui::backend
 		};
 
 		// TODO: source_init_file: false
-		LLDBBackend(std::string filename);
+		LLDBBackend(std::string filename, bool stop_at_entry);
 		virtual ~LLDBBackend();
 
 		void start() override;
@@ -162,6 +162,7 @@ namespace dbgui::backend
 
 		// process state
 		bool _first_run               = true;
+		bool _stop_at_entry           = false;
 		TargetState _state            = TargetState::stopped;
 		std::vector<RegSet> _reg_sets = {};
 		std::vector<Thread> _threads  = {};

src/frontend/frontend.cpp

@@ -9,12 +9,13 @@
 using namespace dbgui;
 using namespace dbgui::frontend;
 
-Target::Target(std::string filename)
+Target::Target(std::string filename, bool stop_at_entry)
 {
 	state          = TargetState::startup;
 	this->filename = filename;
 	id             = 0;
-	backend = std::make_shared<backend::LLDBBackend>(this->filename.c_str());
+	backend = std::make_shared<backend::LLDBBackend>(this->filename.c_str(),
+	                                                 stop_at_entry);
 }
 
 Frontend::Frontend()
@@ -43,6 +44,11 @@ void Frontend::run_frame()
 		ImGui::ShowStackToolWindow();
 	}
 
+	if (_draw_demo_window)
+	{
+		ImGui::ShowDemoWindow();
+	}
+
 	this->handle_msgs();
 	this->draw_open_popup();
 	this->draw_header();
@@ -154,6 +160,7 @@ void Frontend::draw_header()
 		{
 			ImGui::MenuItem("Metrics", nullptr, &_draw_metric_window);
 			ImGui::MenuItem("Stack Tool", nullptr, &_draw_stack_tool);
+			ImGui::MenuItem("Demo Window", nullptr, &_draw_demo_window);
 			ImGui::EndMenu();
 		}
 		ImGui::EndMainMenuBar();
@@ -314,10 +321,13 @@ void Frontend::draw_open_popup()
 
 		if (ImGui::Button("Start"))
 		{
-			this->target = Target{_open_popup_name_buf.data()};
+			this->target =
+			  Target{_open_popup_name_buf.data(), _open_popup_stop_at_entry};
 			this->target->backend->start();
 			ImGui::CloseCurrentPopup();
 		}
+
+		ImGui::Checkbox("Stop at _start", &_open_popup_stop_at_entry);
 		ImGui::EndPopup();
 	}
 }

src/frontend/frontend.h

@@ -44,10 +44,12 @@ namespace dbgui::frontend
 
 		bool _draw_metric_window = false;
 		bool _draw_stack_tool    = false;
+		bool _draw_demo_window   = false;
 
 		bool _draw_open_popup                  = false;
 		ImGuiID _open_popup_id                 = 0;
 		std::vector<char> _open_popup_name_buf = {};
+		bool _open_popup_stop_at_entry         = false;
 
 		std::vector<Window> _windows = {};
 	};

src/frontend/target.h

@@ -87,7 +87,7 @@ namespace dbgui::frontend
 			bool is_cstr         = false;
 		};
 
-		Target(std::string filename);
+		Target(std::string filename, bool stop_at_entry);
 
 		std::optional<uint16_t> data_idx_for_src_id(size_t id)
 		{

src/frontend/window.cpp

@@ -908,6 +908,8 @@ bool SourceWindow::draw(Frontend &frontend)
 
 				ImGui::GetWindowDrawList()->AddTriangleFilled(
 				  pos, p2, p3, IM_COL32(227, 197, 103, 255));
+				ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0,
+				                       ImGui::GetColorU32(ImVec4(1.f, 1.f, 1.f, 0.2f)));
 			}
 
 			// TODO: write custom code to catch mouse clicks in the whole cell, including padding
@@ -1374,7 +1376,8 @@ void WatchWindow::draw_value(Frontend &frontend,
 					}
 
 					expr_path.push_back(ExprPathPart{
-					  .ident = std::string_view{name_begin, name_end - name_begin},
+					  .ident = std::string_view{name_begin, static_cast<size_t>(
+					                                          name_end - name_begin)},
 					  .deref = false});
 					this->draw_value(frontend, member.type_id, member.name, node_idx,
 					                 off + member.offset, expr_path);
@@ -1390,7 +1393,8 @@ void WatchWindow::draw_value(Frontend &frontend,
 				  frontend.target->types[type_id.idx].byte_size / member_size;
 
 				expr_path.push_back(ExprPathPart{
-				  .ident = std::string_view{name_begin, name_end - name_begin},
+				  .ident = std::string_view{name_begin,
+				                            static_cast<size_t>(name_end - name_begin)},
 				  .array = true});
 
 				char buf[32];