# ##############################################################################
#(G)odot (U)nit (T)est class
#
# ##############################################################################
# The MIT License (MIT)
# =====================
#
# Copyright (c) 2020 Tom "Butch" Wesley
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ##############################################################################
# This is a utility for tracking changes in the orphan count.  Each time
# add_counter is called it adds/resets the value in the dictionary to the
# current number of orphans.  Each call to get_counter will return the change
# in orphans since add_counter was last called.
# ##############################################################################
var _counters = {}


func orphan_count():
	return Performance.get_monitor(Performance.OBJECT_ORPHAN_NODE_COUNT)


func add_counter(name):
	_counters[name] = orphan_count()


# Returns the number of orphans created since add_counter was last called for
# the name.  Returns -1 to avoid blowing up with an invalid name but still
# be somewhat visible that we've done something wrong.
func get_counter(name):
	return orphan_count() - _counters[name] if _counters.has(name) else -1


func print_orphans(name, lgr):
	var count = get_counter(name)

	if count > 0:
		var o = "orphan"
		if count > 1:
			o = "orphans"
		lgr.orphan(str(count, " new ", o, "(", name, ")."))