Ruby tracking file loading and Class Definition

Classtrace. RB:

#encoding: utf-8module ClassTrace  T = [] #定义数组常量T，存放trace信息  if x = ARGV.index("--traceout") #如果ruby命令后面有--traceout参数，则记录到文件中，否则输出    OUT = File.open(ARGV[x + 1], ‘w‘)    ARGV[x, 2] = nil  else    OUT = STDERR  endendalias origin_require require #给require定义别名方法origin_require，下面要重新定义alias origin_load load #给load方法定义别名方法origin_load，下面要重新定义load方法def require(file)  ClassTrace::T << [file, caller[0]] #将require方式加载的文件和加载该文件的位置放入一个数组，并添加到T常量中  origin_require(file) #require加载文件enddef load(*args)  ClassTrace::T << [args[0], caller[0]] #将load方式加载的文件和加载该文件的位置放入一个数组  origin_load(*args) #load加载文件enddef Object.inherited(c) #定义钩子方法inherited方法，当有新的类定义时调用此方法将类名和定义的位置加入到T常量  ClassTrace::T << [c, caller[0]] endat_exit{ #当程序退出执行时  o = ClassTrace::OUT  o.puts ‘=‘ * 60   o.puts ‘Files Loaded and Classes Defined:‘  o.puts ‘=‘ * 60  ClassTrace::T.each do |what, where| #遍历trace信息数组T，将信息写入到文件或输出    if what.is_a? Class      o.puts "Defined: #{what.ancestors.join(‘<-‘)} at #{where}"    else      o.puts "Loaded: #{what} at #{where}"    end  end}

Index. Rb

#encoding: utf-8require ‘./classtrace‘require ‘./test‘class Test; endputs "11111"

Test. Rb

#encoding: utf-8class TestClass; end

Ruby index. RB -- traceout/tmp/trace # Write the trace information of the files and defined classes loaded in the index. RB file to the/tmp/trace file, as shown in the following figure:

========================================================== ================================

Files loaded and classes defined:

========================================================== ================================

Loaded:./test at index. RB: 3: In '<main>'

Defined: testclass <-object <-kernel <-basicobject at/users/fangxiang/work/Ruby/test. RB: 2: In '<top (required)>'

Defined: Test <-object <-kernel <-basicobject at index. RB: 4: In '<main>'

Ruby tracking file loading and Class Definition