Edit of SRU2

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移転 -> http://sru.ikejima.org

SRU1 -> http://sru.ikejisoft.com

SRU2についてつらつら書く

* 目標
何ごとも目標が重要だよね。
次のコードが実行できるのが目標という事で一つ

<@code>
usesyntax "sruthon"
  class Jewel:
    def hello(self):
      console.WriteLine("hello, from " + self.lang() + " like syntax")

class Python(Jewel):
    def lang(self):
      "python"

endsyntax

class Ruby < Jewel
  def lang()
    "Ruby"
  end
end

Python.new().hello()
Ruby.new().hello()
</@>
Pythonのマニュアルを調べながら書いた。

<@code>
a = /.*/  # => Error
</@>
<@code>
require 'regex'
a = /.*/  # => Regex object
</@>

<@code>
if "" 
  puts("Zero length string is true")
end

String.instance_fields.if_true = {|self|  (self != "").if_true }

if "" 
  puts("Zero length string is true")
else
  puts("Zero length string is false")
end
</@>

<@code>
require "precondition"
def proc(a>0,b<100)
  console.WriteLine(a+b)
end

a(-3,101) # => Error
</@>

<@code>
# {|oldexpression|
#   yuno = "X / _ / X < 来週も見てくださいね!"
#   mite = "ひだまりスケッチ×365 来週も見てくださいね!"
#   Interpriter.expression = {|str,start|
#     if(str.substring(start,start + yuno.size) == yuno)
#       return (true,CallExpression.new(RefExpression.new(nil,"puts"),
#                       ConstString.new(mite)))
#     else
#       return oldexpression
#     end
#   end
# }(Interpriter.expression)

defsyntax expression("X / _ / X < 来週も見てくださいね!")
  Interpriter.parse("puts 'ひだまりスケッチ×365 来週も見てくださいね!'")
end

X / _ / X < 来週も見てくださいね!
  
</@>

* もくじ

<@graph>
digraph G {

SRU -> "SRU VM" -> "SRU IL"
  SRU -> "SRU Interpriter" 
  SRU -> "SRU Lib"

"SRU Interpriter" -> "SRU NativeInterpriter"
  "SRU NativeInterpriter" -> "SRU PrimitiveInterpriter"
  "SRU NativeInterpriter" -> "SRU BasicInterpriter"
  "SRU Interpriter" -> "SRU ExpansionInterpriter"

"SRU Lib" -> Object
  Object -> Nil
  Object -> Bool
  Bool -> True
  Bool -> False
  Object -> Proc
  Object -> Console
  Object -> Integer
  Object -> Float
  Object -> Math
  Object -> Hash
  Object -> Array
  Object -> String
}