Initial commit

lua/cave/log/class_logger.lua

@@ -0,0 +1,46 @@
+local Logger = require "cave.log.logger"
+local FunctionLogger = require "cave.log.function_logger"
+local Meta = require "cave.meta"
+
+local validate = Meta.validate
+local Table = Meta.Table
+
+---@class cave.ClassLogger : cave.Logger
+local ClassLogger = Meta.derive("ClassLogger", Logger)
+
+---@param cls_name string
+function ClassLogger:init(cls_name)
+  local prefix = cls_name
+  Logger.init(self, prefix)
+end
+
+---@param cls_mt table
+---@return cave.ClassLogger
+function ClassLogger.new(cls_mt)
+  validate { cls_mt = { cls_mt, Table } }
+  local cls_name = Meta.like(cls_mt).repr
+  local logger = setmetatable({}, ClassLogger)
+  logger:init(cls_name)
+  return logger
+end
+
+---@param args_fmt string?
+---@param ... any
+---@return cave.FunctionLogger
+function ClassLogger:call(args_fmt, ...)
+  local dbg_info
+  local fn_name
+  for l = 2, 1, -1 do
+    dbg_info = debug.getinfo(l, "n")
+    fn_name = dbg_info.name
+    if fn_name then break end
+  end
+  if dbg_info.namewhat == "method" then
+    fn_name = self.prefix .. ":" .. fn_name
+  elseif dbg_info.namewhat == "field" then
+    fn_name = self.prefix .. "." .. fn_name
+  end
+  return FunctionLogger.new(fn_name, args_fmt, ...):call()
+end
+
+return ClassLogger