add gs

RCCService2021/ExtraContent/LuaPackages/Logging.lua

@@ -0,0 +1,54 @@
+-- This is taken from Roact internal implementation details as a temporary helper
+-- so that we can control warnings spew and also validate warning logs in unit tests.
+-- We should clean it up and turn it into a nice central logging facility later on.
+
+local outputEnabled = true
+local collectors = {}
+
+local function createLogInfo()
+	local logInfo = {
+		warnings = {},
+	}
+
+	setmetatable(logInfo, {
+		__tostring = function(self)
+			return ("LogInfo\n\tWarnings (%d):\n\t\t%s"):format(
+				#self.warnings,
+				table.concat(self.warnings, "\n\t\t")
+			)
+		end,
+	})
+
+	return logInfo
+end
+
+local Logging = {}
+
+function Logging.capture(callback)
+	local collector = createLogInfo()
+
+	local wasOutputEnabled = outputEnabled
+	outputEnabled = false
+	collectors[collector] = true
+
+	local success, result = pcall(callback)
+
+	collectors[collector] = nil
+	outputEnabled = wasOutputEnabled
+
+	assert(success, result)
+
+	return collector
+end
+
+function Logging.warn(message)
+	for collector in pairs(collectors) do
+		table.insert(collector.warnings, message)
+	end
+
+	if outputEnabled then
+		warn(message)
+	end
+end
+
+return Logging