gistfile1.txt

% ruby ruby_compile.rb                                                                                              ~
compile file sample:
== disasm: #<ISeq:<main>@./sample_test.rb>==============================
local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] hoe        
0000 putspecialobject 3                                               (   1)
0002 putnil           
0003 defineclass      :Hoe, <class:Hoe>, 0
0007 pop              
0008 putnil                                                           (  11)
0009 getconstant      :Hoe
0011 send             <callinfo!mid:new, argc:0, ARGS_SIMPLE>, <callcache>, nil
0015 setlocal         hoe, 0
0018 getlocal         hoe, 0                                          (  12)
0021 putobject        1
0023 send             <callinfo!mid:test_value=, argc:1, ARGS_SIMPLE>, <callcache>, nil
0027 pop              
0028 getlocal         hoe, 0                                          (  13)
0031 send             <callinfo!mid:func, argc:0, ARGS_SIMPLE>, <callcache>, nil
0035 leave            
== disasm: #<ISeq:<class:Hoe>@./sample_test.rb>=========================
0000 putself                                                          (   2)
0001 putobject        :test_value
0003 send             <callinfo!mid:attr_accessor, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0007 pop              
0008 putspecialobject 1                                               (   3)
0010 putobject        :func
0012 putiseq          func
0014 send             <callinfo!mid:core#define_method, argc:2, ARGS_SIMPLE>, <callcache>, nil
0018 pop              
0019 putspecialobject 1                                               (   6)
0021 putobject        :as_is
0023 putiseq          as_is
0025 send             <callinfo!mid:core#define_method, argc:2, ARGS_SIMPLE>, <callcache>, nil
0029 leave            
== disasm: #<ISeq:func@./sample_test.rb>================================
local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] test_value 
0000 putself                                                          (   4)
0001 getlocal         test_value, 0 <========= ここでtest_valueがローカル変数に変身
0004 send             <callinfo!mid:as_is, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0008 dup              
0009 setlocal         test_value, 0
0012 leave            
== disasm: #<ISeq:as_is@./sample_test.rb>===============================
local table (size: 1, argc: 1 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] v<Arg>     
0000 getlocal         v, 0                                            (   7)
0003 leave     

class Hoe
  attr_accessor :test_value
  def func
    test_value = as_is(test_value)
  end
  def as_is(v)
    v
  end
end

hoe = Hoe.new
hoe.test_value = 1
hoe.func