Use const references where possible for List range iterators

22 files changed, 121 insertions, 121 deletions

diff --git a/editor/plugins/animation_blend_space_1d_editor.cpp b/editor/plugins/animation_blend_space_1d_editor.cpp
index ab11680e2f..ad2d9866fa 100644
--- a/editor/plugins/animation_blend_space_1d_editor.cpp
+++ b/editor/plugins/animation_blend_space_1d_editor.cpp
@@ -72,14 +72,14 @@ void AnimationNodeBlendSpace1DEditor::_blend_space_gui_input(const Ref<InputEven
 				List<StringName> names;
 				ap->get_animation_list(&names);
 
-				for (StringName &E : names) {
+				for (const StringName &E : names) {
 					animations_menu->add_icon_item(get_theme_icon(SNAME("Animation"), SNAME("EditorIcons")), E);
 					animations_to_add.push_back(E);
 				}
 			}
 		}
 
-		for (StringName &E : classes) {
+		for (const StringName &E : classes) {
 			String name = String(E).replace_first("AnimationNode", "");
 			if (name == "Animation") {
 				continue;
@@ -373,7 +373,7 @@ void AnimationNodeBlendSpace1DEditor::_add_menu_type(int p_index) {
 		open_file->clear_filters();
 		List<String> filters;
 		ResourceLoader::get_recognized_extensions_for_type("AnimationRootNode", &filters);
-		for (String &E : filters) {
+		for (const String &E : filters) {
 			open_file->add_filter("*." + E);
 		}
 		open_file->popup_file_dialog();
diff --git a/editor/plugins/animation_blend_space_2d_editor.cpp b/editor/plugins/animation_blend_space_2d_editor.cpp
index 3fb90eb4ff..49fcac512b 100644
--- a/editor/plugins/animation_blend_space_2d_editor.cpp
+++ b/editor/plugins/animation_blend_space_2d_editor.cpp
@@ -96,14 +96,14 @@ void AnimationNodeBlendSpace2DEditor::_blend_space_gui_input(const Ref<InputEven
 			if (ap) {
 				List<StringName> names;
 				ap->get_animation_list(&names);
-				for (StringName &E : names) {
+				for (const StringName &E : names) {
 					animations_menu->add_icon_item(get_theme_icon(SNAME("Animation"), SNAME("EditorIcons")), E);
 					animations_to_add.push_back(E);
 				}
 			}
 		}
 
-		for (StringName &E : classes) {
+		for (const StringName &E : classes) {
 			String name = String(E).replace_first("AnimationNode", "");
 			if (name == "Animation") {
 				continue; // nope
@@ -295,7 +295,7 @@ void AnimationNodeBlendSpace2DEditor::_add_menu_type(int p_index) {
 		open_file->clear_filters();
 		List<String> filters;
 		ResourceLoader::get_recognized_extensions_for_type("AnimationRootNode", &filters);
-		for (String &E : filters) {
+		for (const String &E : filters) {
 			open_file->add_filter("*." + E);
 		}
 		open_file->popup_file_dialog();
diff --git a/editor/plugins/animation_blend_tree_editor_plugin.cpp b/editor/plugins/animation_blend_tree_editor_plugin.cpp
index 705a1d0fc0..c94014944c 100644
--- a/editor/plugins/animation_blend_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_blend_tree_editor_plugin.cpp
@@ -121,7 +121,7 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 	List<StringName> nodes;
 	blend_tree->get_node_list(&nodes);
 
-	for (StringName &E : nodes) {
+	for (const StringName &E : nodes) {
 		GraphNode *node = memnew(GraphNode);
 		graph->add_child(node);
 
@@ -155,7 +155,7 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 
 		List<PropertyInfo> pinfo;
 		agnode->get_parameter_list(&pinfo);
-		for (PropertyInfo &F : pinfo) {
+		for (const PropertyInfo &F : pinfo) {
 			if (!(F.usage & PROPERTY_USAGE_EDITOR)) {
 				continue;
 			}
@@ -212,7 +212,7 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 					List<StringName> anims;
 					ap->get_animation_list(&anims);
 
-					for (StringName &F : anims) {
+					for (const StringName &F : anims) {
 						mb->get_popup()->add_item(F);
 						options.push_back(F);
 					}
@@ -246,7 +246,7 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 	List<AnimationNodeBlendTree::NodeConnection> connections;
 	blend_tree->get_node_connections(&connections);
 
-	for (AnimationNodeBlendTree::NodeConnection &E : connections) {
+	for (const AnimationNodeBlendTree::NodeConnection &E : connections) {
 		StringName from = E.output_node;
 		StringName to = E.input_node;
 		int to_idx = E.input_index;
@@ -274,7 +274,7 @@ void AnimationNodeBlendTreeEditor::_add_node(int p_idx) {
 		open_file->clear_filters();
 		List<String> filters;
 		ResourceLoader::get_recognized_extensions_for_type("AnimationNode", &filters);
-		for (String &E : filters) {
+		for (const String &E : filters) {
 			open_file->add_filter("*." + E);
 		}
 		open_file->popup_file_dialog();
@@ -394,7 +394,7 @@ void AnimationNodeBlendTreeEditor::_delete_request(const String &p_which) {
 	List<AnimationNodeBlendTree::NodeConnection> conns;
 	blend_tree->get_node_connections(&conns);
 
-	for (AnimationNodeBlendTree::NodeConnection &E : conns) {
+	for (const AnimationNodeBlendTree::NodeConnection &E : conns) {
 		if (E.output_node == p_which || E.input_node == p_which) {
 			undo_redo->add_undo_method(blend_tree.ptr(), "connect_node", E.input_node, E.input_index, E.output_node);
 		}
@@ -423,7 +423,7 @@ void AnimationNodeBlendTreeEditor::_delete_nodes_request() {
 
 	undo_redo->create_action(TTR("Delete Node(s)"));
 
-	for (StringName &F : to_erase) {
+	for (const StringName &F : to_erase) {
 		_delete_request(F);
 	}
 
@@ -517,7 +517,7 @@ bool AnimationNodeBlendTreeEditor::_update_filters(const Ref<AnimationNode> &ano
 		List<StringName> animations;
 		player->get_animation_list(&animations);
 
-		for (StringName &E : animations) {
+		for (const StringName &E : animations) {
 			Ref<Animation> anim = player->get_animation(E);
 			for (int i = 0; i < anim->get_track_count(); i++) {
 				String track_path = anim->track_get_path(i);
@@ -718,7 +718,7 @@ void AnimationNodeBlendTreeEditor::_notification(int p_what) {
 
 		List<AnimationNodeBlendTree::NodeConnection> conns;
 		blend_tree->get_node_connections(&conns);
-		for (AnimationNodeBlendTree::NodeConnection &E : conns) {
+		for (const AnimationNodeBlendTree::NodeConnection &E : conns) {
 			float activity = 0;
 			StringName path = AnimationTreeEditor::get_singleton()->get_base_path() + E.input_node;
 			if (AnimationTreeEditor::get_singleton()->get_tree() && !AnimationTreeEditor::get_singleton()->get_tree()->is_state_invalid()) {
@@ -828,7 +828,7 @@ void AnimationNodeBlendTreeEditor::_node_renamed(const String &p_text, Ref<Anima
 	List<AnimationNodeBlendTree::NodeConnection> connections;
 	blend_tree->get_node_connections(&connections);
 
-	for (AnimationNodeBlendTree::NodeConnection &E : connections) {
+	for (const AnimationNodeBlendTree::NodeConnection &E : connections) {
 		StringName from = E.output_node;
 		StringName to = E.input_node;
 		int to_idx = E.input_index;
diff --git a/editor/plugins/animation_player_editor_plugin.cpp b/editor/plugins/animation_player_editor_plugin.cpp
index 1bdbc2980c..4ba9147955 100644
--- a/editor/plugins/animation_player_editor_plugin.cpp
+++ b/editor/plugins/animation_player_editor_plugin.cpp
@@ -350,7 +350,7 @@ void AnimationPlayerEditor::_animation_load() {
 	List<String> extensions;
 
 	ResourceLoader::get_recognized_extensions_for_type("Animation", &extensions);
-	for (String &E : extensions) {
+	for (const String &E : extensions) {
 		file->add_filter("*." + E + " ; " + E.to_upper());
 	}
 
@@ -584,7 +584,7 @@ void AnimationPlayerEditor::_animation_blend() {
 	blend_editor.next->clear();
 	blend_editor.next->add_item("", i);
 
-	for (StringName &to : anims) {
+	for (const StringName &to : anims) {
 		TreeItem *blend = blend_editor.tree->create_item(root);
 		blend->set_editable(0, false);
 		blend->set_editable(1, true);
@@ -829,7 +829,7 @@ void AnimationPlayerEditor::_update_player() {
 	}
 
 	int active_idx = -1;
-	for (StringName &E : animlist) {
+	for (const StringName &E : animlist) {
 		Ref<Texture2D> icon;
 		if (E == player->get_autoplay()) {
 			if (E == "RESET") {
@@ -965,7 +965,7 @@ void AnimationPlayerEditor::_animation_duplicate() {
 	Ref<Animation> new_anim = memnew(Animation);
 	List<PropertyInfo> plist;
 	anim->get_property_list(&plist);
-	for (PropertyInfo &E : plist) {
+	for (const PropertyInfo &E : plist) {
 		if (E.usage & PROPERTY_USAGE_STORAGE) {
 			new_anim->set(E.name, anim->get(E.name));
 		}
diff --git a/editor/plugins/animation_state_machine_editor.cpp b/editor/plugins/animation_state_machine_editor.cpp
index bee6af3cbb..a1f96f21bf 100644
--- a/editor/plugins/animation_state_machine_editor.cpp
+++ b/editor/plugins/animation_state_machine_editor.cpp
@@ -93,14 +93,14 @@ void AnimationNodeStateMachineEditor::_state_machine_gui_input(const Ref<InputEv
 			if (ap) {
 				List<StringName> names;
 				ap->get_animation_list(&names);
-				for (StringName &E : names) {
+				for (const StringName &E : names) {
 					animations_menu->add_icon_item(get_theme_icon(SNAME("Animation"), SNAME("EditorIcons")), E);
 					animations_to_add.push_back(E);
 				}
 			}
 		}
 
-		for (StringName &E : classes) {
+		for (const StringName &E : classes) {
 			String name = String(E).replace_first("AnimationNode", "");
 			if (name == "Animation") {
 				continue; // nope
@@ -318,7 +318,7 @@ void AnimationNodeStateMachineEditor::_state_machine_gui_input(const Ref<InputEv
 			float best_d_x = 1e20;
 			float best_d_y = 1e20;
 
-			for (StringName &E : nodes) {
+			for (const StringName &E : nodes) {
 				if (E == selected_node) {
 					continue;
 				}
@@ -409,7 +409,7 @@ void AnimationNodeStateMachineEditor::_add_menu_type(int p_index) {
 		open_file->clear_filters();
 		List<String> filters;
 		ResourceLoader::get_recognized_extensions_for_type("AnimationRootNode", &filters);
-		for (String &E : filters) {
+		for (const String &E : filters) {
 			open_file->add_filter("*." + E);
 		}
 		open_file->popup_file_dialog();
@@ -606,7 +606,7 @@ void AnimationNodeStateMachineEditor::_state_machine_draw() {
 	}
 
 	//pre pass nodes so we know the rectangles
-	for (StringName &E : nodes) {
+	for (const StringName &E : nodes) {
 		Ref<AnimationNode> anode = state_machine->get_node(E);
 		String name = E;
 		bool needs_editor = EditorNode::get_singleton()->item_has_editor(anode.ptr());
diff --git a/editor/plugins/animation_tree_editor_plugin.cpp b/editor/plugins/animation_tree_editor_plugin.cpp
index 67d5600a3c..cd84be0c25 100644
--- a/editor/plugins/animation_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_tree_editor_plugin.cpp
@@ -215,7 +215,7 @@ Vector<String> AnimationTreeEditor::get_animation_list() {
 	List<StringName> anims;
 	ap->get_animation_list(&anims);
 	Vector<String> ret;
-	for (StringName &E : anims) {
+	for (const StringName &E : anims) {
 		ret.push_back(E);
 	}
 
diff --git a/editor/plugins/canvas_item_editor_plugin.cpp b/editor/plugins/canvas_item_editor_plugin.cpp
index 8b9e76b402..869a582d96 100644
--- a/editor/plugins/canvas_item_editor_plugin.cpp
+++ b/editor/plugins/canvas_item_editor_plugin.cpp
@@ -399,7 +399,7 @@ Point2 CanvasItemEditor::snap_point(Point2 p_target, unsigned int p_modes, unsig
 	if ((is_snap_active && snap_other_nodes && (p_modes & SNAP_OTHER_NODES)) || (p_forced_modes & SNAP_OTHER_NODES)) {
 		Transform2D to_snap_transform = Transform2D();
 		List<const CanvasItem *> exceptions = List<const CanvasItem *>();
-		for (CanvasItem *E : p_other_nodes_exceptions) {
+		for (const CanvasItem *E : p_other_nodes_exceptions) {
 			exceptions.push_back(E);
 		}
 		if (p_self_canvas_item) {
@@ -842,7 +842,7 @@ void CanvasItemEditor::_commit_canvas_item_state(List<CanvasItem *> p_canvas_ite
 			undo_redo->add_do_method(canvas_item, "_edit_set_state", canvas_item->_edit_get_state());
 			undo_redo->add_undo_method(canvas_item, "_edit_set_state", se->undo_state);
 			if (commit_bones) {
-				for (Dictionary &F : se->pre_drag_bones_undo_state) {
+				for (const Dictionary &F : se->pre_drag_bones_undo_state) {
 					canvas_item = Object::cast_to<CanvasItem>(canvas_item->get_parent());
 					undo_redo->add_do_method(canvas_item, "_edit_set_state", canvas_item->_edit_get_state());
 					undo_redo->add_undo_method(canvas_item, "_edit_set_state", F);
@@ -3555,7 +3555,7 @@ void CanvasItemEditor::_draw_hover() {
 
 		Point2 pos = transform.xform(hovering_results[i].position) - Point2(0, item_size.y) + (Point2(node_icon->get_size().x, -node_icon->get_size().y) / 4);
 		// Rectify the position to avoid overlapping items
-		for (Rect2 &E : previous_rects) {
+		for (const Rect2 &E : previous_rects) {
 			if (E.intersects(Rect2(pos, item_size))) {
 				pos.y = E.get_position().y - item_size.y;
 			}
@@ -4699,7 +4699,7 @@ void CanvasItemEditor::_popup_callback(int p_op) {
 			}
 
 			undo_redo->create_action(TTR("Paste Pose"));
-			for (PoseClipboard &E : pose_clipboard) {
+			for (const PoseClipboard &E : pose_clipboard) {
 				Node2D *n2d = Object::cast_to<Node2D>(ObjectDB::get_instance(E.id));
 				if (!n2d) {
 					continue;
diff --git a/editor/plugins/cpu_particles_2d_editor_plugin.cpp b/editor/plugins/cpu_particles_2d_editor_plugin.cpp
index 7e0eb89359..6f246c1661 100644
--- a/editor/plugins/cpu_particles_2d_editor_plugin.cpp
+++ b/editor/plugins/cpu_particles_2d_editor_plugin.cpp
@@ -253,7 +253,7 @@ CPUParticles2DEditorPlugin::CPUParticles2DEditorPlugin(EditorNode *p_node) {
 	file = memnew(EditorFileDialog);
 	List<String> ext;
 	ImageLoader::get_recognized_extensions(&ext);
-	for (String &E : ext) {
+	for (const String &E : ext) {
 		file->add_filter("*." + E + "; " + E.to_upper());
 	}
 	file->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_FILE);
diff --git a/editor/plugins/editor_preview_plugins.cpp b/editor/plugins/editor_preview_plugins.cpp
index 19204e3bf8..81c340e9a4 100644
--- a/editor/plugins/editor_preview_plugins.cpp
+++ b/editor/plugins/editor_preview_plugins.cpp
@@ -490,7 +490,7 @@ Ref<Texture2D> EditorScriptPreviewPlugin::generate(const RES &p_from, const Size
 	Set<String> control_flow_keywords;
 	Set<String> keywords;
 
-	for (String &E : kwors) {
+	for (const String &E : kwors) {
 		if (scr->get_language()->is_control_flow_keyword(E)) {
 			control_flow_keywords.insert(E);
 		} else {
diff --git a/editor/plugins/gpu_particles_2d_editor_plugin.cpp b/editor/plugins/gpu_particles_2d_editor_plugin.cpp
index 4412d51077..5184e837ce 100644
--- a/editor/plugins/gpu_particles_2d_editor_plugin.cpp
+++ b/editor/plugins/gpu_particles_2d_editor_plugin.cpp
@@ -361,7 +361,7 @@ GPUParticles2DEditorPlugin::GPUParticles2DEditorPlugin(EditorNode *p_node) {
 	file = memnew(EditorFileDialog);
 	List<String> ext;
 	ImageLoader::get_recognized_extensions(&ext);
-	for (String &E : ext) {
+	for (const String &E : ext) {
 		file->add_filter("*." + E + "; " + E.to_upper());
 	}
 	file->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_FILE);
diff --git a/editor/plugins/material_editor_plugin.cpp b/editor/plugins/material_editor_plugin.cpp
index 32d5865d0b..94966d4fe6 100644
--- a/editor/plugins/material_editor_plugin.cpp
+++ b/editor/plugins/material_editor_plugin.cpp
@@ -265,7 +265,7 @@ Ref<Resource> StandardMaterial3DConversionPlugin::convert(const Ref<Resource> &p
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		// Texture parameter has to be treated specially since StandardMaterial3D saved it
 		// as RID but ShaderMaterial needs Texture itself
 		Ref<Texture2D> texture = mat->get_texture_by_name(E.name);
@@ -309,7 +309,7 @@ Ref<Resource> ParticlesMaterialConversionPlugin::convert(const Ref<Resource> &p_
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		Variant value = RS::get_singleton()->material_get_param(mat->get_rid(), E.name);
 		smat->set_shader_param(E.name, value);
 	}
@@ -346,7 +346,7 @@ Ref<Resource> CanvasItemMaterialConversionPlugin::convert(const Ref<Resource> &p
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		Variant value = RS::get_singleton()->material_get_param(mat->get_rid(), E.name);
 		smat->set_shader_param(E.name, value);
 	}
@@ -383,7 +383,7 @@ Ref<Resource> ProceduralSkyMaterialConversionPlugin::convert(const Ref<Resource>
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		Variant value = RS::get_singleton()->material_get_param(mat->get_rid(), E.name);
 		smat->set_shader_param(E.name, value);
 	}
@@ -420,7 +420,7 @@ Ref<Resource> PanoramaSkyMaterialConversionPlugin::convert(const Ref<Resource> &
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		Variant value = RS::get_singleton()->material_get_param(mat->get_rid(), E.name);
 		smat->set_shader_param(E.name, value);
 	}
@@ -457,7 +457,7 @@ Ref<Resource> PhysicalSkyMaterialConversionPlugin::convert(const Ref<Resource> &
 	List<PropertyInfo> params;
 	RS::get_singleton()->shader_get_param_list(mat->get_shader_rid(), &params);
 
-	for (PropertyInfo &E : params) {
+	for (const PropertyInfo &E : params) {
 		Variant value = RS::get_singleton()->material_get_param(mat->get_rid(), E.name);
 		smat->set_shader_param(E.name, value);
 	}
diff --git a/editor/plugins/node_3d_editor_gizmos.cpp b/editor/plugins/node_3d_editor_gizmos.cpp
index 393aaff207..2138f943da 100644
--- a/editor/plugins/node_3d_editor_gizmos.cpp
+++ b/editor/plugins/node_3d_editor_gizmos.cpp
@@ -4746,7 +4746,7 @@ void NavigationRegion3DGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
 		Vector3 *tw = tmeshfaces.ptrw();
 		int tidx = 0;
 
-		for (Face3 &f : faces) {
+		for (const Face3 &f : faces) {
 			for (int j = 0; j < 3; j++) {
 				tw[tidx++] = f.vertex[j];
 				_EdgeKey ek;
diff --git a/editor/plugins/resource_preloader_editor_plugin.cpp b/editor/plugins/resource_preloader_editor_plugin.cpp
index 0cb5a2e1e4..cbea2405b8 100644
--- a/editor/plugins/resource_preloader_editor_plugin.cpp
+++ b/editor/plugins/resource_preloader_editor_plugin.cpp
@@ -181,13 +181,13 @@ void ResourcePreloaderEditor::_update_library() {
 	preloader->get_resource_list(&rnames);
 
 	List<String> names;
-	for (StringName &E : rnames) {
+	for (const StringName &E : rnames) {
 		names.push_back(E);
 	}
 
 	names.sort();
 
-	for (String &E : names) {
+	for (const String &E : names) {
 		TreeItem *ti = tree->create_item(root);
 		ti->set_cell_mode(0, TreeItem::CELL_MODE_STRING);
 		ti->set_editable(0, true);
diff --git a/editor/plugins/root_motion_editor_plugin.cpp b/editor/plugins/root_motion_editor_plugin.cpp
index 95e23d0c57..ed91f174d1 100644
--- a/editor/plugins/root_motion_editor_plugin.cpp
+++ b/editor/plugins/root_motion_editor_plugin.cpp
@@ -70,7 +70,7 @@ void EditorPropertyRootMotion::_node_assign() {
 		List<StringName> animations;
 		player->get_animation_list(&animations);
 
-		for (StringName &E : animations) {
+		for (const StringName &E : animations) {
 			Ref<Animation> anim = player->get_animation(E);
 			for (int i = 0; i < anim->get_track_count(); i++) {
 				paths.insert(anim->track_get_path(i));
diff --git a/editor/plugins/script_editor_plugin.cpp b/editor/plugins/script_editor_plugin.cpp
index ab783c87e9..668a15da37 100644
--- a/editor/plugins/script_editor_plugin.cpp
+++ b/editor/plugins/script_editor_plugin.cpp
@@ -103,7 +103,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 	const Color type_color = EDITOR_GET("text_editor/highlighting/engine_type_color");
 	List<StringName> types;
 	ClassDB::get_class_list(&types);
-	for (StringName &E : types) {
+	for (const StringName &E : types) {
 		String n = E;
 		if (n.begins_with("_")) {
 			n = n.substr(1, n.length());
@@ -115,7 +115,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 	const Color usertype_color = EDITOR_GET("text_editor/highlighting/user_type_color");
 	List<StringName> global_classes;
 	ScriptServer::get_global_class_list(&global_classes);
-	for (StringName &E : global_classes) {
+	for (const StringName &E : global_classes) {
 		highlighter->add_keyword_color(E, usertype_color);
 	}
 
@@ -134,7 +134,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 		const Color basetype_color = EDITOR_GET("text_editor/highlighting/base_type_color");
 		List<String> core_types;
 		script->get_language()->get_core_type_words(&core_types);
-		for (String &E : core_types) {
+		for (const String &E : core_types) {
 			highlighter->add_keyword_color(E, basetype_color);
 		}
 
@@ -143,7 +143,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 		const Color control_flow_keyword_color = EDITOR_GET("text_editor/highlighting/control_flow_keyword_color");
 		List<String> keywords;
 		script->get_language()->get_reserved_words(&keywords);
-		for (String &E : keywords) {
+		for (const String &E : keywords) {
 			if (script->get_language()->is_control_flow_keyword(E)) {
 				highlighter->add_keyword_color(E, control_flow_keyword_color);
 			} else {
@@ -157,7 +157,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 		if (instance_base != StringName()) {
 			List<PropertyInfo> plist;
 			ClassDB::get_property_list(instance_base, &plist);
-			for (PropertyInfo &E : plist) {
+			for (const PropertyInfo &E : plist) {
 				String name = E.name;
 				if (E.usage & PROPERTY_USAGE_CATEGORY || E.usage & PROPERTY_USAGE_GROUP || E.usage & PROPERTY_USAGE_SUBGROUP) {
 					continue;
@@ -170,7 +170,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 
 			List<String> clist;
 			ClassDB::get_integer_constant_list(instance_base, &clist);
-			for (String &E : clist) {
+			for (const String &E : clist) {
 				highlighter->add_member_keyword_color(E, member_variable_color);
 			}
 		}
@@ -179,7 +179,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 		const Color comment_color = EDITOR_GET("text_editor/highlighting/comment_color");
 		List<String> comments;
 		script->get_language()->get_comment_delimiters(&comments);
-		for (String &comment : comments) {
+		for (const String &comment : comments) {
 			String beg = comment.get_slice(" ", 0);
 			String end = comment.get_slice_count(" ") > 1 ? comment.get_slice(" ", 1) : String();
 			highlighter->add_color_region(beg, end, comment_color, end == "");
@@ -189,7 +189,7 @@ void EditorStandardSyntaxHighlighter::_update_cache() {
 		const Color string_color = EDITOR_GET("text_editor/highlighting/string_color");
 		List<String> strings;
 		script->get_language()->get_string_delimiters(&strings);
-		for (String &string : strings) {
+		for (const String &string : strings) {
 			String beg = string.get_slice(" ", 0);
 			String end = string.get_slice_count(" ") > 1 ? string.get_slice(" ", 1) : String();
 			highlighter->add_color_region(beg, end, string_color, end == "");
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index f9a0f307c3..65459d159d 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -50,7 +50,7 @@ void ConnectionInfoDialog::popup_connections(String p_method, Vector<Node *> p_n
 		List<Connection> all_connections;
 		p_nodes[i]->get_signals_connected_to_this(&all_connections);
 
-		for (Connection &connection : all_connections) {
+		for (const Connection &connection : all_connections) {
 			if (connection.callable.get_method() != p_method) {
 				continue;
 			}
@@ -114,7 +114,7 @@ Vector<String> ScriptTextEditor::get_functions() {
 	if (script->get_language()->validate(text, script->get_path(), &fnc)) {
 		//if valid rewrite functions to latest
 		functions.clear();
-		for (String &E : fnc) {
+		for (const String &E : fnc) {
 			functions.push_back(E);
 		}
 	}
@@ -201,7 +201,7 @@ void ScriptTextEditor::_set_theme_for_script() {
 	List<String> strings;
 	script->get_language()->get_string_delimiters(&strings);
 	text_edit->clear_string_delimiters();
-	for (String &string : strings) {
+	for (const String &string : strings) {
 		String beg = string.get_slice(" ", 0);
 		String end = string.get_slice_count(" ") > 1 ? string.get_slice(" ", 1) : String();
 		text_edit->add_string_delimiter(beg, end, end == "");
@@ -210,7 +210,7 @@ void ScriptTextEditor::_set_theme_for_script() {
 	List<String> comments;
 	script->get_language()->get_comment_delimiters(&comments);
 	text_edit->clear_comment_delimiters();
-	for (String &comment : comments) {
+	for (const String &comment : comments) {
 		String beg = comment.get_slice(" ", 0);
 		String end = comment.get_slice_count(" ") > 1 ? comment.get_slice(" ", 1) : String();
 		text_edit->add_comment_delimiter(beg, end, end == "");
@@ -413,7 +413,7 @@ void ScriptTextEditor::_validate_script() {
 		}
 
 		functions.clear();
-		for (String &E : fnc) {
+		for (const String &E : fnc) {
 			functions.push_back(E);
 		}
 		script_is_valid = true;
@@ -428,7 +428,7 @@ void ScriptTextEditor::_validate_script() {
 		Node *base = get_tree()->get_edited_scene_root();
 		if (base && missing_connections.size() > 0) {
 			warnings_panel->push_table(1);
-			for (Connection &connection : missing_connections) {
+			for (const Connection &connection : missing_connections) {
 				String base_path = base->get_name();
 				String source_path = base == connection.signal.get_object() ? base_path : base_path + "/" + base->get_path_to(Object::cast_to<Node>(connection.signal.get_object()));
 				String target_path = base == connection.callable.get_object() ? base_path : base_path + "/" + base->get_path_to(Object::cast_to<Node>(connection.callable.get_object()));
@@ -450,7 +450,7 @@ void ScriptTextEditor::_validate_script() {
 
 	// Add script warnings.
 	warnings_panel->push_table(3);
-	for (ScriptLanguage::Warning &w : warnings) {
+	for (const ScriptLanguage::Warning &w : warnings) {
 		Dictionary ignore_meta;
 		ignore_meta["line"] = w.start_line;
 		ignore_meta["code"] = w.string_code.to_lower();
@@ -480,7 +480,7 @@ void ScriptTextEditor::_validate_script() {
 
 	errors_panel->clear();
 	errors_panel->push_table(2);
-	for (ScriptLanguage::ScriptError &err : errors) {
+	for (const ScriptLanguage::ScriptError &err : errors) {
 		errors_panel->push_cell();
 		errors_panel->push_meta(err.line - 1);
 		errors_panel->push_color(warnings_panel->get_theme_color(SNAME("error_color"), SNAME("Editor")));
@@ -501,7 +501,7 @@ void ScriptTextEditor::_validate_script() {
 		if (errors.is_empty()) {
 			te->set_line_background_color(i, Color(0, 0, 0, 0));
 		} else {
-			for (ScriptLanguage::ScriptError &E : errors) {
+			for (const ScriptLanguage::ScriptError &E : errors) {
 				bool error_line = i == E.line - 1;
 				te->set_line_background_color(i, error_line ? marked_line_color : Color(0, 0, 0, 0));
 				if (error_line) {
@@ -900,7 +900,7 @@ void ScriptTextEditor::_update_connected_methods() {
 		List<Connection> connections;
 		nodes[i]->get_signals_connected_to_this(&connections);
 
-		for (Connection &connection : connections) {
+		for (const Connection &connection : connections) {
 			if (!(connection.flags & CONNECT_PERSIST)) {
 				continue;
 			}
@@ -1275,7 +1275,7 @@ void ScriptTextEditor::_edit_option_toggle_inline_comment() {
 	List<String> comment_delimiters;
 	script->get_language()->get_comment_delimiters(&comment_delimiters);
 
-	for (String &script_delimiter : comment_delimiters) {
+	for (const String &script_delimiter : comment_delimiters) {
 		if (script_delimiter.find(" ") == -1) {
 			delimiter = script_delimiter;
 			break;
diff --git a/editor/plugins/shader_editor_plugin.cpp b/editor/plugins/shader_editor_plugin.cpp
index 6c589ee07c..95870a0f3c 100644
--- a/editor/plugins/shader_editor_plugin.cpp
+++ b/editor/plugins/shader_editor_plugin.cpp
@@ -118,7 +118,7 @@ void ShaderTextEditor::_load_theme_settings() {
 	const Color keyword_color = EDITOR_GET("text_editor/highlighting/keyword_color");
 	const Color control_flow_keyword_color = EDITOR_GET("text_editor/highlighting/control_flow_keyword_color");
 
-	for (String &E : keywords) {
+	for (const String &E : keywords) {
 		if (ShaderLanguage::is_control_flow_keyword(E)) {
 			syntax_highlighter->add_keyword_color(E, control_flow_keyword_color);
 		} else {
@@ -144,7 +144,7 @@ void ShaderTextEditor::_load_theme_settings() {
 
 	const Color member_variable_color = EDITOR_GET("text_editor/highlighting/member_variable_color");
 
-	for (String &E : built_ins) {
+	for (const String &E : built_ins) {
 		syntax_highlighter->add_keyword_color(E, member_variable_color);
 	}
 
diff --git a/editor/plugins/sprite_frames_editor_plugin.cpp b/editor/plugins/sprite_frames_editor_plugin.cpp
index 486a40a4fd..a5d0ebbc12 100644
--- a/editor/plugins/sprite_frames_editor_plugin.cpp
+++ b/editor/plugins/sprite_frames_editor_plugin.cpp
@@ -788,7 +788,7 @@ void SpriteFramesEditor::_update_library(bool p_skip_selector) {
 
 		anim_names.sort_custom<StringName::AlphCompare>();
 
-		for (StringName &E : anim_names) {
+		for (const StringName &E : anim_names) {
 			String name = E;
 
 			TreeItem *it = animations->create_item(anim_root);
diff --git a/editor/plugins/texture_region_editor_plugin.cpp b/editor/plugins/texture_region_editor_plugin.cpp
index 34227ee894..b277f2ab42 100644
--- a/editor/plugins/texture_region_editor_plugin.cpp
+++ b/editor/plugins/texture_region_editor_plugin.cpp
@@ -144,7 +144,7 @@ void TextureRegionEditor::_region_draw() {
 			}
 		}
 	} else if (snap_mode == SNAP_AUTOSLICE) {
-		for (Rect2 &r : autoslice_cache) {
+		for (const Rect2 &r : autoslice_cache) {
 			Vector2 endpoints[4] = {
 				mtx.basis_xform(r.position),
 				mtx.basis_xform(r.position + Vector2(r.size.x, 0)),
@@ -327,7 +327,7 @@ void TextureRegionEditor::_region_input(const Ref<InputEvent> &p_input) {
 				}
 				if (edited_margin < 0 && snap_mode == SNAP_AUTOSLICE) {
 					Vector2 point = mtx.affine_inverse().xform(Vector2(mb->get_position().x, mb->get_position().y));
-					for (Rect2 &E : autoslice_cache) {
+					for (const Rect2 &E : autoslice_cache) {
 						if (E.has_point(point)) {
 							rect = E;
 							if (Input::get_singleton()->is_key_pressed(KEY_CTRL) && !(Input::get_singleton()->is_key_pressed(KEY_SHIFT | KEY_ALT))) {
diff --git a/editor/plugins/theme_editor_plugin.cpp b/editor/plugins/theme_editor_plugin.cpp
index 991c298caa..df6e9e6614 100644
--- a/editor/plugins/theme_editor_plugin.cpp
+++ b/editor/plugins/theme_editor_plugin.cpp
@@ -65,7 +65,7 @@ void ThemeItemImportTree::_update_items_tree() {
 	tree_icon_items.clear();
 	tree_stylebox_items.clear();
 
-	for (StringName &E : types) {
+	for (const StringName &E : types) {
 		String type_name = (String)E;
 
 		TreeItem *type_node = import_items_tree->create_item(root);
@@ -93,7 +93,7 @@ void ThemeItemImportTree::_update_items_tree() {
 
 			bool data_type_has_filtered_items = false;
 
-			for (StringName &F : names) {
+			for (const StringName &F : names) {
 				String item_name = (String)F;
 				bool is_item_matching_filter = (item_name.findn(filter_text) > -1);
 				if (!filter_text.is_empty() && !is_matching_filter && !is_item_matching_filter) {
@@ -182,7 +182,7 @@ void ThemeItemImportTree::_update_items_tree() {
 			bool data_type_any_checked_with_data = false;
 
 			filtered_names.sort_custom<StringName::AlphCompare>();
-			for (StringName &F : filtered_names) {
+			for (const StringName &F : filtered_names) {
 				TreeItem *item_node = import_items_tree->create_item(data_type_node);
 				item_node->set_meta("_can_be_imported", true);
 				item_node->set_text(0, F);
@@ -1236,7 +1236,7 @@ void ThemeItemEditorDialog::_update_edit_types() {
 	bool item_reselected = false;
 	edit_type_list->clear();
 	int e_idx = 0;
-	for (StringName &E : theme_types) {
+	for (const StringName &E : theme_types) {
 		Ref<Texture2D> item_icon;
 		if (E == "") {
 			item_icon = get_theme_icon(SNAME("NodeDisabled"), SNAME("EditorIcons"));
@@ -1318,7 +1318,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			color_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All Color Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(color_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1339,7 +1339,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			constant_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All Constant Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(constant_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1360,7 +1360,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			font_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All Font Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(font_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1381,7 +1381,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			font_size_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All Font Size Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(font_size_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1402,7 +1402,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			icon_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All Icon Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(icon_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1423,7 +1423,7 @@ void ThemeItemEditorDialog::_update_edit_item_tree(String p_item_type) {
 			stylebox_root->add_button(0, get_theme_icon(SNAME("Clear"), SNAME("EditorIcons")), ITEMS_TREE_REMOVE_DATA_TYPE, false, TTR("Remove All StyleBox Items"));
 
 			names.sort_custom<StringName::AlphCompare>();
-			for (StringName &E : names) {
+			for (const StringName &E : names) {
 				TreeItem *item = edit_items_tree->create_item(stylebox_root);
 				item->set_text(0, E);
 				item->add_button(0, get_theme_icon(SNAME("Edit"), SNAME("EditorIcons")), ITEMS_TREE_RENAME_ITEM, false, TTR("Rename Item"));
@@ -1507,7 +1507,7 @@ void ThemeItemEditorDialog::_remove_data_type_items(Theme::DataType p_data_type,
 	edited_theme->_freeze_change_propagation();
 
 	edited_theme->get_theme_item_list(p_data_type, p_item_type, &names);
-	for (StringName &E : names) {
+	for (const StringName &E : names) {
 		edited_theme->clear_theme_item(p_data_type, E, p_item_type);
 	}
 
@@ -1526,7 +1526,7 @@ void ThemeItemEditorDialog::_remove_class_items() {
 
 		names.clear();
 		Theme::get_default()->get_theme_item_list(data_type, edited_item_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (edited_theme->has_theme_item_nocheck(data_type, E, edited_item_type)) {
 				edited_theme->clear_theme_item(data_type, E, edited_item_type);
 			}
@@ -1550,7 +1550,7 @@ void ThemeItemEditorDialog::_remove_custom_items() {
 
 		names.clear();
 		edited_theme->get_theme_item_list(data_type, edited_item_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!Theme::get_default()->has_theme_item_nocheck(data_type, E, edited_item_type)) {
 				edited_theme->clear_theme_item(data_type, E, edited_item_type);
 			}
@@ -1574,7 +1574,7 @@ void ThemeItemEditorDialog::_remove_all_items() {
 
 		names.clear();
 		edited_theme->get_theme_item_list(data_type, edited_item_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			edited_theme->clear_theme_item(data_type, E, edited_item_type);
 		}
 	}
@@ -1927,7 +1927,7 @@ ThemeItemEditorDialog::ThemeItemEditorDialog() {
 	import_another_theme_dialog->set_title(TTR("Select Another Theme Resource:"));
 	List<String> ext;
 	ResourceLoader::get_recognized_extensions_for_type("Theme", &ext);
-	for (String &E : ext) {
+	for (const String &E : ext) {
 		import_another_theme_dialog->add_filter("*." + E + "; Theme Resource");
 	}
 	import_another_file_hb->add_child(import_another_theme_dialog);
@@ -1969,7 +1969,7 @@ void ThemeTypeDialog::_update_add_type_options(const String &p_filter) {
 	names.sort_custom<StringName::AlphCompare>();
 
 	Vector<StringName> unique_names;
-	for (StringName &E : names) {
+	for (const StringName &E : names) {
 		// Filter out undesired values.
 		if (!p_filter.is_subsequence_ofi(String(E))) {
 			continue;
@@ -2132,7 +2132,7 @@ void ThemeTypeEditor::_update_type_list() {
 
 		bool item_reselected = false;
 		int e_idx = 0;
-		for (StringName &E : theme_types) {
+		for (const StringName &E : theme_types) {
 			Ref<Texture2D> item_icon;
 			if (E == "") {
 				item_icon = get_theme_icon(SNAME("NodeDisabled"), SNAME("EditorIcons"));
@@ -2182,7 +2182,7 @@ OrderedHashMap<StringName, bool> ThemeTypeEditor::_get_type_items(String p_type_
 
 		(Theme::get_default().operator->()->*get_list_func)(default_type, &names);
 		names.sort_custom<StringName::AlphCompare>();
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			items[E] = false;
 		}
 	}
@@ -2191,7 +2191,7 @@ OrderedHashMap<StringName, bool> ThemeTypeEditor::_get_type_items(String p_type_
 		names.clear();
 		(edited_theme.operator->()->*get_list_func)(p_type_name, &names);
 		names.sort_custom<StringName::AlphCompare>();
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			items[E] = true;
 		}
 	}
@@ -2203,7 +2203,7 @@ OrderedHashMap<StringName, bool> ThemeTypeEditor::_get_type_items(String p_type_
 	keys.sort_custom<StringName::AlphCompare>();
 
 	OrderedHashMap<StringName, bool> ordered_items;
-	for (StringName &E : keys) {
+	for (const StringName &E : keys) {
 		ordered_items[E] = items[E];
 	}
 
@@ -2580,7 +2580,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_icon_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_icon(E, edited_type)) {
 				edited_theme->set_icon(E, edited_type, Ref<Texture2D>());
 			}
@@ -2589,7 +2589,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_stylebox_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_stylebox(E, edited_type)) {
 				edited_theme->set_stylebox(E, edited_type, Ref<StyleBox>());
 			}
@@ -2598,7 +2598,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_font_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_font(E, edited_type)) {
 				edited_theme->set_font(E, edited_type, Ref<Font>());
 			}
@@ -2607,7 +2607,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_font_size_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_font_size(E, edited_type)) {
 				edited_theme->set_font_size(E, edited_type, Theme::get_default()->get_font_size(E, default_type));
 			}
@@ -2616,7 +2616,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_color_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_color(E, edited_type)) {
 				edited_theme->set_color(E, edited_type, Theme::get_default()->get_color(E, default_type));
 			}
@@ -2625,7 +2625,7 @@ void ThemeTypeEditor::_add_default_type_items() {
 	{
 		names.clear();
 		Theme::get_default()->get_constant_list(default_type, &names);
-		for (StringName &E : names) {
+		for (const StringName &E : names) {
 			if (!edited_theme->has_constant(E, edited_type)) {
 				edited_theme->set_constant(E, edited_type, Theme::get_default()->get_constant(E, default_type));
 			}
@@ -2882,7 +2882,7 @@ void ThemeTypeEditor::_update_stylebox_from_leading() {
 	List<StringName> names;
 	edited_theme->get_stylebox_list(edited_type, &names);
 	List<Ref<StyleBox>> styleboxes;
-	for (StringName &E : names) {
+	for (const StringName &E : names) {
 		if (E == leading_stylebox.item_name) {
 			continue;
 		}
@@ -2895,7 +2895,7 @@ void ThemeTypeEditor::_update_stylebox_from_leading() {
 
 	List<PropertyInfo> props;
 	leading_stylebox.stylebox->get_property_list(&props);
-	for (PropertyInfo &E : props) {
+	for (const PropertyInfo &E : props) {
 		if (!(E.usage & PROPERTY_USAGE_STORAGE)) {
 			continue;
 		}
@@ -3301,7 +3301,7 @@ ThemeEditor::ThemeEditor() {
 	preview_scene_dialog->set_title(TTR("Select UI Scene:"));
 	List<String> ext;
 	ResourceLoader::get_recognized_extensions_for_type("PackedScene", &ext);
-	for (String &E : ext) {
+	for (const String &E : ext) {
 		preview_scene_dialog->add_filter("*." + E + "; Scene");
 	}
 	main_hs->add_child(preview_scene_dialog);
@@ -3343,11 +3343,11 @@ bool ThemeEditorPlugin::handles(Object *p_node) const {
 		List<StringName> names;
 
 		edited_theme->get_font_type_list(&types);
-		for (StringName &E : types) {
+		for (const StringName &E : types) {
 			names.clear();
 			edited_theme->get_font_list(E, &names);
 
-			for (StringName &F : names) {
+			for (const StringName &F : names) {
 				if (font_item == edited_theme->get_font(F, E)) {
 					belongs_to_theme = true;
 					break;
@@ -3360,11 +3360,11 @@ bool ThemeEditorPlugin::handles(Object *p_node) const {
 		List<StringName> names;
 
 		edited_theme->get_stylebox_type_list(&types);
-		for (StringName &E : types) {
+		for (const StringName &E : types) {
 			names.clear();
 			edited_theme->get_stylebox_list(E, &names);
 
-			for (StringName &F : names) {
+			for (const StringName &F : names) {
 				if (stylebox_item == edited_theme->get_stylebox(F, E)) {
 					belongs_to_theme = true;
 					break;
@@ -3377,11 +3377,11 @@ bool ThemeEditorPlugin::handles(Object *p_node) const {
 		List<StringName> names;
 
 		edited_theme->get_icon_type_list(&types);
-		for (StringName &E : types) {
+		for (const StringName &E : types) {
 			names.clear();
 			edited_theme->get_icon_list(E, &names);
 
-			for (StringName &F : names) {
+			for (const StringName &F : names) {
 				if (icon_item == edited_theme->get_icon(F, E)) {
 					belongs_to_theme = true;
 					break;
diff --git a/editor/plugins/tiles/tile_set_atlas_source_editor.cpp b/editor/plugins/tiles/tile_set_atlas_source_editor.cpp
index ab26e1c380..432f48fa85 100644
--- a/editor/plugins/tiles/tile_set_atlas_source_editor.cpp
+++ b/editor/plugins/tiles/tile_set_atlas_source_editor.cpp
@@ -303,7 +303,7 @@ void TileSetAtlasSourceEditor::AtlasTileProxyObject::_get_property_list(List<Pro
 	}
 
 	// Add only properties that are common to all tiles.
-	for (PLData *E : data_list) {
+	for (const PLData *E : data_list) {
 		if (E->uses == tiles.size()) {
 			p_list->push_back(E->property_info);
 		}
diff --git a/editor/plugins/visual_shader_editor_plugin.cpp b/editor/plugins/visual_shader_editor_plugin.cpp
index 7e3244dddf..46818afe45 100644
--- a/editor/plugins/visual_shader_editor_plugin.cpp
+++ b/editor/plugins/visual_shader_editor_plugin.cpp
@@ -666,7 +666,7 @@ void VisualShaderGraphPlugin::add_node(VisualShader::Type p_type, int p_id) {
 		if (valid_left) {
 			name_left = vsnode->get_input_port_name(i);
 			port_left = vsnode->get_input_port_type(i);
-			for (VisualShader::Connection &E : connections) {
+			for (const VisualShader::Connection &E : connections) {
 				if (E.to_node == p_id && E.to_port == j) {
 					port_left_used = true;
 				}
@@ -899,7 +899,7 @@ void VisualShaderGraphPlugin::add_node(VisualShader::Type p_type, int p_id) {
 		expression_box->set_syntax_highlighter(expression_syntax_highlighter);
 		expression_box->add_theme_color_override("background_color", background_color);
 
-		for (String &E : VisualShaderEditor::get_singleton()->keyword_list) {
+		for (const String &E : VisualShaderEditor::get_singleton()->keyword_list) {
 			if (ShaderLanguage::is_control_flow_keyword(E)) {
 				expression_syntax_highlighter->add_keyword_color(E, control_flow_keyword_color);
 			} else {
@@ -1470,7 +1470,7 @@ void VisualShaderEditor::_update_graph() {
 
 	graph_plugin->make_dirty(false);
 
-	for (VisualShader::Connection &E : connections) {
+	for (const VisualShader::Connection &E : connections) {
 		int from = E.from_node;
 		int from_idx = E.from_port;
 		int to = E.to_node;
@@ -1634,7 +1634,7 @@ void VisualShaderEditor::_expand_output_port(int p_node, int p_port, bool p_expa
 	List<VisualShader::Connection> conns;
 	visual_shader->get_node_connections(type, &conns);
 
-	for (VisualShader::Connection &E : conns) {
+	for (const VisualShader::Connection &E : conns) {
 		int from_node = E.from_node;
 		int from_port = E.from_port;
 		int to_node = E.to_node;
@@ -1708,7 +1708,7 @@ void VisualShaderEditor::_remove_input_port(int p_node, int p_port) {
 
 	List<VisualShader::Connection> conns;
 	visual_shader->get_node_connections(type, &conns);
-	for (VisualShader::Connection &E : conns) {
+	for (const VisualShader::Connection &E : conns) {
 		int from_node = E.from_node;
 		int from_port = E.from_port;
 		int to_node = E.to_node;
@@ -1757,7 +1757,7 @@ void VisualShaderEditor::_remove_output_port(int p_node, int p_port) {
 
 	List<VisualShader::Connection> conns;
 	visual_shader->get_node_connections(type, &conns);
-	for (VisualShader::Connection &E : conns) {
+	for (const VisualShader::Connection &E : conns) {
 		int from_node = E.from_node;
 		int from_port = E.from_port;
 		int to_node = E.to_node;
@@ -2518,7 +2518,7 @@ void VisualShaderEditor::_nodes_dragged() {
 
 	undo_redo->create_action(TTR("Node(s) Moved"));
 
-	for (DragOp &E : drag_buffer) {
+	for (const DragOp &E : drag_buffer) {
 		undo_redo->add_do_method(visual_shader.ptr(), "set_node_position", E.type, E.node, E.to);
 		undo_redo->add_undo_method(visual_shader.ptr(), "set_node_position", E.type, E.node, E.from);
 		undo_redo->add_do_method(graph_plugin.ptr(), "set_node_position", E.type, E.node, E.to);
@@ -2544,7 +2544,7 @@ void VisualShaderEditor::_connection_request(const String &p_from, int p_from_in
 	List<VisualShader::Connection> conns;
 	visual_shader->get_node_connections(type, &conns);
 
-	for (VisualShader::Connection &E : conns) {
+	for (const VisualShader::Connection &E : conns) {
 		if (E.to_node == to && E.to_port == p_to_index) {
 			undo_redo->add_do_method(visual_shader.ptr(), "disconnect_nodes", type, E.from_node, E.from_port, E.to_node, E.to_port);
 			undo_redo->add_undo_method(visual_shader.ptr(), "connect_nodes", type, E.from_node, E.from_port, E.to_node, E.to_port);
@@ -2598,7 +2598,7 @@ void VisualShaderEditor::_delete_nodes(int p_type, const List<int> &p_nodes) {
 	visual_shader->get_node_connections(type, &conns);
 
 	for (const int &F : p_nodes) {
-		for (VisualShader::Connection &E : conns) {
+		for (const VisualShader::Connection &E : conns) {
 			if (E.from_node == F || E.to_node == F) {
 				undo_redo->add_do_method(graph_plugin.ptr(), "disconnect_nodes", type, E.from_node, E.from_port, E.to_node, E.to_port);
 			}
@@ -2639,7 +2639,7 @@ void VisualShaderEditor::_delete_nodes(int p_type, const List<int> &p_nodes) {
 
 	List<VisualShader::Connection> used_conns;
 	for (const int &F : p_nodes) {
-		for (VisualShader::Connection &E : conns) {
+		for (const VisualShader::Connection &E : conns) {
 			if (E.from_node == F || E.to_node == F) {
 				bool cancel = false;
 				for (List<VisualShader::Connection>::Element *R = used_conns.front(); R; R = R->next()) {
@@ -3094,7 +3094,7 @@ void VisualShaderEditor::_notification(int p_what) {
 
 			preview_text->add_theme_color_override("background_color", background_color);
 
-			for (String &E : keyword_list) {
+			for (const String &E : keyword_list) {
 				if (ShaderLanguage::is_control_flow_keyword(E)) {
 					syntax_highlighter->add_keyword_color(E, control_flow_keyword_color);
 				} else {
@@ -3249,7 +3249,7 @@ void VisualShaderEditor::_dup_paste_nodes(int p_type, int p_pasted_type, List<in
 	List<VisualShader::Connection> conns;
 	visual_shader->get_node_connections(pasted_type, &conns);
 
-	for (VisualShader::Connection &E : conns) {
+	for (const VisualShader::Connection &E : conns) {
 		if (unsupported_set.has(E.from_node) || unsupported_set.has(E.to_node)) {
 			continue;
 		}
@@ -3399,7 +3399,7 @@ void VisualShaderEditor::_input_select_item(Ref<VisualShaderNodeInput> p_input,
 			if (type_changed) {
 				List<VisualShader::Connection> conns;
 				visual_shader->get_node_connections(type, &conns);
-				for (VisualShader::Connection &E : conns) {
+				for (const VisualShader::Connection &E : conns) {
 					if (E.from_node == id) {
 						if (visual_shader->is_port_types_compatible(p_input->get_input_type_by_name(p_name), visual_shader->get_node(type, E.to_node)->get_input_port_type(E.to_port))) {
 							undo_redo->add_do_method(visual_shader.ptr(), "connect_nodes", type, E.from_node, E.from_port, E.to_node, E.to_port);
@@ -3445,7 +3445,7 @@ void VisualShaderEditor::_uniform_select_item(Ref<VisualShaderNodeUniformRef> p_
 			if (type_changed) {
 				List<VisualShader::Connection> conns;
 				visual_shader->get_node_connections(type, &conns);
-				for (VisualShader::Connection &E : conns) {
+				for (const VisualShader::Connection &E : conns) {
 					if (E.from_node == id) {
 						if (visual_shader->is_port_types_compatible(p_uniform_ref->get_uniform_type_by_name(p_name), visual_shader->get_node(type, E.to_node)->get_input_port_type(E.to_port))) {
 							continue;
@@ -4825,7 +4825,7 @@ Control *VisualShaderNodePluginDefault::create_editor(const Ref<Resource> &p_par
 
 	Vector<PropertyInfo> pinfo;
 
-	for (PropertyInfo &E : props) {
+	for (const PropertyInfo &E : props) {
 		for (int i = 0; i < properties.size(); i++) {
 			if (E.name == String(properties[i])) {
 				pinfo.push_back(E);
@@ -4894,7 +4894,7 @@ void EditorPropertyShaderMode::_option_selected(int p_which) {
 		VisualShader::Type type = VisualShader::Type(i);
 		List<VisualShader::Connection> conns;
 		visual_shader->get_node_connections(type, &conns);
-		for (VisualShader::Connection &E : conns) {
+		for (const VisualShader::Connection &E : conns) {
 			if (E.to_node == VisualShader::NODE_ID_OUTPUT) {
 				undo_redo->add_undo_method(visual_shader.ptr(), "connect_nodes", type, E.from_node, E.from_port, E.to_node, E.to_port);
 			}
@@ -4918,7 +4918,7 @@ void EditorPropertyShaderMode::_option_selected(int p_which) {
 	List<PropertyInfo> props;
 	visual_shader->get_property_list(&props);
 
-	for (PropertyInfo &E : props) {
+	for (const PropertyInfo &E : props) {
 		if (E.name.begins_with("flags/") || E.name.begins_with("modes/")) {
 			undo_redo->add_undo_property(visual_shader.ptr(), E.name, visual_shader->get(E.name));
 		}
@@ -5024,7 +5024,7 @@ void VisualShaderNodePortPreview::_shader_changed() {
 		if (src_mat && src_mat->get_shader().is_valid()) {
 			List<PropertyInfo> params;
 			src_mat->get_shader()->get_param_list(&params);
-			for (PropertyInfo &E : params) {
+			for (const PropertyInfo &E : params) {
 				material->set(E.name, src_mat->get(E.name));
 			}
 		}