Make ld_library_find_symbol() easier to read

As well as shorter, strangely.

Symbols may technically exist directly in the root category now.

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "vera++"]
-	path = vera++
-	url = https://bitbucket.org/verateam/vera.git

CMakeLists.txt

@@ -3,7 +3,7 @@ cmake_minimum_required (VERSION 3.10)
 project (logdiag VERSION 0.2.1 LANGUAGES C)
 
 # Options
-option (OPTION_USE_VERA "Use vera++ for source code style checks" OFF)
+option (OPTION_CLANG_TIDY "Enable use of clang-tidy" OFF)
 option (OPTION_NOINSTALL "For developers only--work without installing" OFF)
 option (OPTION_GTKDOC "For developers only--enable use of gtk-doc" OFF)
 option (BUILD_TESTING "Build tests" OFF)
@@ -266,42 +266,38 @@ find_package (CppCheck)
 GENERATE_CPPCHECK (SOURCES liblogdiag src tests ENABLE_IDS all
 	TARGET_NAME ${PROJECT_NAME}_cppcheck INCLUDES ${PROJECT_BINARY_DIR})
 
-if (OPTION_USE_VERA)
-	# Force this off, we don't need it
-	option (VERA_LUA "" OFF)
+# Various clang-based diagnostics, loads of fake positives and spam
+if (OPTION_CLANG_TIDY)
+	set (clang_tidy_checks
+		clang-analyzer-* bugprone-* misc-* readability-* performance-*
+		-bugprone-reserved-identifier          # GObject
+		-performance-no-int-to-ptr             # GObject
+		-bugprone-narrowing-conversions
+		-bugprone-macro-parentheses            # too coarse-grained
+		-readability-braces-around-statements  # fine by me
+		-readability-isolate-declaration       # fine by me
+		-readability-magic-numbers             # too coarse-grained
+		-misc-unused-parameters)               # fine by me
 
-	# Make it build within the same build tree
-	get_directory_property (backup_includes INCLUDE_DIRECTORIES)
-	set_directory_properties (PROPERTIES INCLUDE_DIRECTORIES "")
-	set (backup_source_dir "${CMAKE_SOURCE_DIR}")
-	set (CMAKE_SOURCE_DIR "${CMAKE_SOURCE_DIR}/vera++")
+	string (REPLACE ";" "," clang_tidy_checks "${clang_tidy_checks}")
+	set (clang_tidy_config "{
+		Checks: '${clang_tidy_checks}',
+		CheckOptions: [{
+			key: readability-function-cognitive-complexity.Threshold,
+			value: '30'
+		}]}")
 
-	add_subdirectory ("vera++")
+	string (REPLACE "\n" " " clang_tidy_config "${clang_tidy_config}")
 
-	set_directory_properties (PROPERTIES INCLUDE_DIRECTORIES "${backup_includes}")
-	set (CMAKE_SOURCE_DIR "${backup_source_dir}")
-
-	# Check the sources
-	# XXX: maybe do it per source file and not all at once
-	set (vera_srcs ${liblogdiag_SOURCES} ${logdiag_SOURCES} ${logdiag_HEADERS})
-	set (vera_output ${PROJECT_BINARY_DIR}/vera.log)
-	add_custom_command (OUTPUT ${vera_output}
-		COMMAND vera
-			-R F001 -R L001 -R T001 -R T004 -R T005 -R T006
-			-R T007 -R T009 -R T010 -R T015 -R T017 -R T018
-			-R L004 -P max-line-length=80
-			-R L005 -P max-consecutive-empty-lines=2
-			--root ${CMAKE_SOURCE_DIR}/vera++
-			--std-report=-
-			--std-report=${vera_output}
-			--warning -s
-			${vera_srcs}
-		DEPENDS ${vera_srcs}
-		WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-		COMMENT "Checking style for logdiag")
-
-	add_custom_target (logdiag_vera ALL DEPENDS ${vera_output})
-endif (OPTION_USE_VERA)
+	set (CMAKE_EXPORT_COMPILE_COMMANDS ON)
+	set (clang_tidy_sources ${liblogdiag_SOURCES} ${logdiag_SOURCES})
+	add_custom_target (${PROJECT_NAME}_clang_tidy
+		COMMAND clang-tidy --quiet -p ${PROJECT_BINARY_DIR}
+			"--config=${clang_tidy_config}" ${clang_tidy_sources}
+			| sh -c "cat 1>&2"
+		DEPENDS ${clang_tidy_sources} VERBATIM
+		USES_TERMINAL WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+endif ()
 
 # GSettings
 find_program (GLIB_COMPILE_SCHEMAS_EXECUTABLE glib-compile-schemas)

liblogdiag/ld-diagram-view.c

@@ -1315,7 +1315,7 @@ point_to_line_segment_distance
 	/* The projection is beyond the line segment. */
 	if (u < 0.)
 		return ld_point_distance (point, p1->x, p1->y);
-	else if (u > 1.)
+	if (u > 1.)
 		return ld_point_distance (point, p2->x, p2->y);
 
 	/* The projection is on the line segment. */

liblogdiag/ld-library.c

@@ -49,6 +49,8 @@ static gboolean foreach_dir (const gchar *path,
 	gboolean (*callback) (const gchar *, const gchar *, gpointer),
 	gpointer userdata, GError **error);
 
+static LdSymbol *traverse_path (LdCategory *category, gchar **path);
+
 
 G_DEFINE_TYPE (LdLibrary, ld_library, G_TYPE_OBJECT)
 
@@ -356,62 +358,51 @@ ld_library_load (LdLibrary *self, const gchar *directory)
 LdSymbol *
 ld_library_find_symbol (LdLibrary *self, const gchar *identifier)
 {
-	gchar **id_el_start, **id_el;
-	const GSList *list, *list_el;
-	LdCategory *cat;
+	gchar **path;
+	LdSymbol *symbol = NULL;
 
 	g_return_val_if_fail (LD_IS_LIBRARY (self), NULL);
 	g_return_val_if_fail (identifier != NULL, NULL);
 
-	id_el_start = g_strsplit (identifier, LD_LIBRARY_IDENTIFIER_SEPARATOR, 0);
-	if (!id_el_start)
-		return NULL;
-
-	/* We need at least one category name plus the symbol name. */
-	id_el = id_el_start;
-	if (!id_el[0] || !id_el[1])
-		goto ld_library_find_symbol_error;
-
-	/* Find the category where the symbol is in. */
-	cat = self->priv->root;
-	while (1)
+	path = g_strsplit (identifier, LD_LIBRARY_IDENTIFIER_SEPARATOR, 0);
+	if (path)
 	{
-		gboolean found = FALSE;
+		symbol = traverse_path (self->priv->root, path);
+		g_strfreev (path);
+	}
+	return symbol;
+}
 
-		list = ld_category_get_children (cat);
-		for (list_el = list; list_el; list_el = g_slist_next (list_el))
+static LdSymbol *
+traverse_path (LdCategory *category, gchar **path)
+{
+	const GSList *list, *iter;
+	LdSymbol *symbol;
+
+	g_return_val_if_fail (*path != NULL, NULL);
+
+	/* Walk the category tree to where the symbol is supposed to be. */
+	for (; path[1]; path++)
+	{
+		list = ld_category_get_children (category);
+		for (iter = list; iter; iter = g_slist_next (iter))
 		{
-			cat = LD_CATEGORY (list_el->data);
-			if (!strcmp (*id_el, ld_category_get_name (cat)))
-			{
-				found = TRUE;
+			category = LD_CATEGORY (iter->data);
+			if (!strcmp (*path, ld_category_get_name (category)))
 				break;
-			}
 		}
-
-		if (!found)
-			goto ld_library_find_symbol_error;
-
-		if (!(id_el++)[2])
-			break;
+		if (!iter)
+			return NULL;
 	}
 
-	/* And then the actual symbol. */
-	list = ld_category_get_symbols (cat);
-	for (list_el = list; list_el; list_el = g_slist_next (list_el))
+	/* And look up the actual symbol at the leaf. */
+	list = ld_category_get_symbols (category);
+	for (iter = list; iter; iter = g_slist_next (iter))
 	{
-		LdSymbol *symbol;
-
-		symbol = LD_SYMBOL (list_el->data);
-		if (!strcmp (*id_el, ld_symbol_get_name (symbol)))
-		{
-			g_strfreev (id_el_start);
+		symbol = LD_SYMBOL (iter->data);
+		if (!strcmp (*path, ld_symbol_get_name (symbol)))
 			return symbol;
-		}
 	}
-
-ld_library_find_symbol_error:
-	g_strfreev (id_el_start);
 	return NULL;
 }
 

liblogdiag/ld-lua.c

@@ -250,8 +250,7 @@ ld_lua_alloc (void *ud, void *ptr, size_t osize, size_t nsize)
 		g_free (ptr);
 		return NULL;
 	}
-	else
-		return g_try_realloc (ptr, nsize);
+	return g_try_realloc (ptr, nsize);
 }
 
 /**

src/ld-window-main.c

@@ -618,8 +618,8 @@ diagram_get_name (LdWindowMain *self)
 
 	if (self->priv->filename)
 		return g_filename_display_basename (self->priv->filename);
-	else
-		return g_strdup (_("Unsaved Diagram"));
+
+	return g_strdup (_("Unsaved Diagram"));
 }
 
 /*
@@ -698,12 +698,10 @@ diagram_save (LdWindowMain *self, GtkWindow *dialog_parent,
 		gtk_widget_destroy (message_dialog);
 		return FALSE;
 	}
-	else
-	{
-		ld_diagram_set_modified (self->priv->diagram, FALSE);
-		update_title (self);
-		return TRUE;
-	}
+
+	ld_diagram_set_modified (self->priv->diagram, FALSE);
+	update_title (self);
+	return TRUE;
 }
 
 /*
@@ -1179,11 +1177,11 @@ static gboolean
 on_action_about_activate_link (GtkAboutDialog *dialog, gchar *uri,
 	LdWindowMain *self)
 {
+#ifdef G_OS_WIN32
 	GdkWindow *window;
 
 	window = gtk_widget_get_window (GTK_WIDGET (self));
 
-#ifdef G_OS_WIN32
 	/* gtk_show_uri() on Windows XP fails, due to trying to establish
 	 * an SSL connection, so let's first try to not do that on Windows.
 	 * `cmd.exe /c start "" ...` would pop up a command line window,

vera++

@@ -1 +0,0 @@
-Subproject commit 45f3ab870d3722891642098bd7fc0d6fc97c8571