xwayland: use dict to collect supported features

include/xwayland/meson.build

@@ -1,26 +1,29 @@
-have_listenfd = false
-have_no_touch_pointer_emulation = false
-have_force_xrandr_emulation = false
-have_terminate_delay = false
+xwayland_feature_names = [
+	'listenfd',
+	'no_touch_pointer_emulation',
+	'force_xrandr_emulation',
+	'terminate_delay',
+]
+
+xwayland_features = {}
 if xwayland.found()
 	xwayland_path = xwayland.get_variable('xwayland')
-	have_listenfd = xwayland.get_variable('have_listenfd',
-		default_value: 'false') == 'true'
-	have_no_touch_pointer_emulation = xwayland.get_variable(
-		'have_no_touch_pointer_emulation', default_value: 'false') == 'true'
-	have_force_xrandr_emulation = xwayland.get_variable(
-		'have_force_xrandr_emulation', default_value: 'false') == 'true'
-	have_terminate_delay = xwayland.get_variable(pkgconfig: 'have_terminate_delay') == 'true'
+	foreach name : xwayland_feature_names
+		have = xwayland.get_variable('have_' + name, default_value: 'false') == 'true'
+		xwayland_features += { name: have }
+	endforeach
 else
 	xwayland_path = xwayland_prog.full_path()
+	foreach name : xwayland_feature_names
+		xwayland_features += { name: false }
+	endforeach
 endif
 
 xwayland_config_data = configuration_data()
 xwayland_config_data.set_quoted('XWAYLAND_PATH', xwayland_path)
-xwayland_config_data.set10('HAVE_XWAYLAND_LISTENFD', have_listenfd)
-xwayland_config_data.set10('HAVE_XWAYLAND_NO_TOUCH_POINTER_EMULATION', have_no_touch_pointer_emulation)
-xwayland_config_data.set10('HAVE_XWAYLAND_FORCE_XRANDR_EMULATION', have_force_xrandr_emulation)
-xwayland_config_data.set10('HAVE_XWAYLAND_TERMINATE_DELAY', have_terminate_delay)
+foreach name, have : xwayland_features
+	xwayland_config_data.set10('HAVE_XWAYLAND_' + name.to_upper(), have)
+endforeach
 configure_file(
 	output: 'config.h',
 	configuration: xwayland_config_data,