Clean up a few more cases of raw pointer management

src/gui/core/event/handler.cpp

@@ -59,7 +59,7 @@ namespace event
 
 /***** Static data. *****/
 static std::unique_ptr<class sdl_event_handler> handler_ = nullptr;
-static events::event_context* event_context = nullptr;
+static std::unique_ptr<events::event_context> event_context = nullptr;
 
 #ifdef MAIN_EVENT_HANDLER
 static unsigned draw_interval = 0;
@@ -532,7 +532,7 @@ void sdl_event_handler::connect(dispatcher* dispatcher)
 
 	if(dispatchers_.empty()) {
 		LOG_GUI_E << "creating new dispatcher event context";
-		event_context = new events::event_context();
+		event_context = std::make_unique<events::event_context>();
 		join();
 	}
 
@@ -567,7 +567,6 @@ void sdl_event_handler::disconnect(dispatcher* disp)
 	if(dispatchers_.empty()) {
 		LOG_GUI_E << "deleting unused dispatcher event context";
 		leave();
-		delete event_context;
 		event_context = nullptr;
 	}
 }

src/gui/widgets/generator.cpp

@@ -1157,7 +1157,7 @@ static_assert(false, "GUI2/Generator: GENERATE_BODY already defined!");
 	}
 #endif
 
-std::unique_ptr<generator_base>  generator_base::build(
+std::unique_ptr<generator_base> generator_base::build(
 		const bool has_minimum, const bool has_maximum, const placement placement, const bool select)
 {
 	std::unique_ptr<generator_base> result = nullptr;
@@ -1171,27 +1171,22 @@ namespace {
 
 void pointer_test()
 {
-	generator_base *a = generator_base::build(
+	auto a = generator_base::build(
 			true, true, generator_base::horizontal_list, true);
 
-	generator_base *b = generator_base::build(
+	auto b = generator_base::build(
 			true, false, generator_base::horizontal_list, true);
 
-	generator_base *c = generator_base::build(
+	auto c = generator_base::build(
 			false, true, generator_base::horizontal_list, true);
 
-	generator_base *d = generator_base::build(
+	auto d = generator_base::build(
 			false, false, generator_base::horizontal_list, true);
 
 	a->clear();
 	b->clear();
 	c->clear();
 	d->clear();
-
-	delete a;
-	delete b;
-	delete c;
-	delete d;
 }
 
 void direct_test()

src/gui/widgets/window.cpp

@@ -409,12 +409,6 @@ window::~window()
 	if(!hidden_) {
 		queue_redraw();
 	}
-
-#ifdef DEBUG_WINDOW_LAYOUT_GRAPHS
-
-	delete debug_layout_;
-
-#endif
 }
 
 window* window::window_instance(const unsigned handle)

src/gui/widgets/window.hpp

@@ -668,7 +668,7 @@ private:
 	void finalize(const builder_grid& content_grid);
 
 #ifdef DEBUG_WINDOW_LAYOUT_GRAPHS
-	debug_layout_graph* debug_layout_;
+	std::unique_ptr<debug_layout_graph> debug_layout_;
 
 public:
 	/** wrapper for debug_layout_graph::generate_dot_file. */

src/pathfind/teleport.cpp

@@ -118,8 +118,10 @@ void teleport_group::get_teleport_pair(
 	const filter_context * fc = resources::filter_con;
 	assert(fc);
 
+	utils::optional<ignore_units_filter_context> ignore_context;
 	if (ignore_units) {
-		fc = new ignore_units_filter_context(*resources::filter_con);
+		ignore_context.emplace(*resources::filter_con);
+		fc = &ignore_context.value();
 	}
 
 	vconfig filter(cfg_.child_or_empty("filter"), true);
@@ -133,10 +135,6 @@ void teleport_group::get_teleport_pair(
 		terrain_filter target_filter(target, fc, false);
 		target_filter.get_locations(reversed_ ? loc_pair.first : loc_pair.second, u);
 	}
-
-	if (ignore_units) {
-		delete fc;
-	}
 }
 
 const std::string& teleport_group::get_teleport_id() const {

src/persist_manager.cpp

@@ -23,20 +23,19 @@ persist_manager::persist_manager()
 
 persist_manager::~persist_manager() {
 	cancel_transaction();
-	for (context_map::iterator i = contexts_.begin(); i != contexts_.end(); ++i)
-		delete (i->second);
 }
 
 persist_context &persist_manager::get_context(const std::string &ns)
 {
 	persist_context::name_space name(ns,true);
 	std::string key(name.root_);
-	context_map::iterator i = contexts_.find(key);
-	if (i == contexts_.end()) {
-		contexts_[key] = new persist_file_context(key);
-		if (in_transaction_) contexts_[key]->start_transaction();
+	context_map::iterator iter = contexts_.find(key);
+	if (iter == contexts_.end()) {
+		auto pfc = std::make_unique<persist_file_context>(key);
+		if (in_transaction_) pfc->start_transaction();
+		std::tie(iter, std::ignore) = contexts_.emplace(key, std::move(pfc));
 	}
-	persist_context *ret = contexts_[key];
+	auto& ret = iter->second;
 	if (ret->get_node() != ns)
 		ret->set_node(name.descendants_);
 	return *ret;

src/persist_manager.hpp

@@ -16,13 +16,14 @@
 #pragma once
 
 #include <map>
+#include <memory>
 #include <string>
 
 class persist_context;
 
 class persist_manager {
 	protected:
-		typedef std::map<std::string,persist_context *> context_map;
+		typedef std::map<std::string, std::unique_ptr<persist_context>> context_map;
 
 		bool in_transaction_;
 		context_map contexts_;