_____________ ____________________________.___.
      /   _____/    |   \______   \______   \__  |   |
      \_____  \|    |   /|    |  _/|     ___//   |   |
      /        \    |  / |    |   \|    |    \____   |
     /_______  /______/  |______  /|____|    / ______|
             \/                 \/           \/       

a subset of python, vm implemented with ANSI C and compiler implemented with Python 3.

Python子集，虚拟机部分使用C语言实现，编译器使用Python3实现(开始是用Python2写的，应该还能兼容，没有测试)。

run python setup.py gcc in console(or you may use other c compiler)

在控制台(终端)运行python setup.py gcc(你也可以用其他C编译器，我喜欢TCC，小而且快速)

1. tokenize.py tokenizer modified from tinypy/tokenize
2. parse.py handwrite LL parser
3. encode.py, asm.py code generator

1. stack based
2. bytecode defined in python/libs/tmcode.py
3. exception handling implemented with setjmp
4. C function and python function.
5. exception can be tracked by lineno and handled.

1. vm.c entry
2. interp.c interpreter
3. builtins.c built-in functions
4. builtins2.c built-in functions for developers.

1. string, strings are immutable.
2. number, use double as default number.
3. list, array list increase with simple strategy.
4. dict, this is not hashtable, for the optimization of global access, because the offset of a variable in globals dict never change.Besides, object are implemented in dict.
5. function, C functions, python functions and methods.
6. None, NoneType object.

1. repl.py repl mode
2. dis.py dissamble bytecode.
3. libs/tm2c.py convert Python source code to C source code, not done yet.

1. repl.py 交互式模式，直接运行./tm.exe进入交互模式
2. dis.py 反编译
3. libs/tm2c.py 转换TMPython的源代码到C语言源代码，部分完成。

位于subpy/python/libs/tm2c.py, 例子在subpy/python/test/tm2c/目录下面,目前完成的部分比较少，有了大体思路 使用方法

1. 进入subpy/python目录,编译python setup.py gcc
2. 运行例子tm.exe libs/tm2c.py testspeed.py,结果会输出到控制台，可以重定向到文件tm libs/tm2c.py testspeed.py > ../testspeed.c
3. 运行gcc ../testspeed.c -o testspeed.exe
4. 运行testspeed.exe

1. 易于实现，不用分配寄存器
2. 占用的字节码长度小一些
3. 更容易反编译，所以在字节码级别优化的程度可以更大（优点&缺点）

1. 需要分配寄存器，稍微复杂一点，不过使用虚拟寄存器，难度不大
2. 一条指令是相对完整的语句，不会有操作栈，GC的时候不用标记操作栈
3. 解释执行更快，因为没有大量的栈操作
4. 指令更少

That's all.