Re: [bch-discuss] Python 2.0

[Toby D. <mb...@di...>]

On Thu, 5 Oct 2000 13:28:46 +0100 (BST), Michael Hudson
<mw...@ca...> wrote:

>> Is anyone looking at adding support for the new instructions in python
>> 2.0?
>
>I've been meaning to do it for a while.  If you beat me to it, I certainly
>won't hold it against you!

Heres a patch for the two instructions that I am using (PRINT_ITEM_TO
and PRINT_NEWLINE_TO), and which raises a NotImplemented error for all
of those other new ones that I dont yet care about.

(If anyones interested, Ive been experimenting with allowing file-like
objects to choose their own character encoding when a unicode string
is printed)

Ive also been niggled by the way bytecodehacks imports its sibling
modules.... it assumes that the bytecodehacks package is installed as
a root package (Its more convenient for me to install it as a
sub-package below my package) Would you accept a patch to change all
of the 
from bytecodehacks.ops import *
into 
from ops import *
?


Index: stack_bump_methods
===================================================================
RCS file:
/cvsroot/bytecodehacks/bytecodehacks/bytecodehacks/code_gen/stack_bump_methods,v
retrieving revision 1.5
diff -c -6 -r1.5 stack_bump_methods
*** stack_bump_methods	2000/04/01 11:02:52	1.5
--- stack_bump_methods	2000/10/05 15:30:00
***************
*** 22,33 ****
--- 22,34 ----
  STOP_CODE:
      pass
  POP_TOP:
      pop()
  ROT_TWO:
  ROT_THREE:
+ ROT_FOUR:
      pass
  DUP_TOP:
      push()
  UNARY_POSITIVE:
  UNARY_NEGATIVE:
  UNARY_NOT:
***************
*** 76,87 ****
--- 77,92 ----
  DELETE_SUBSCR:
      pop(2)
  PRINT_EXPR:
  PRINT_ITEM:
      pop()
  PRINT_NEWLINE:
+ PRINT_ITEM_TO:
+     pop(2)
+ PRINT_NEWLINE_TO:
+     pop()
  BREAK_LOOP:
      pass
  LOAD_LOCALS:
      push()
  RETURN_VALUE:
      pop()
***************
*** 153,159 ****
--- 158,183 ----
      num_regular_args = self.arg&0x00FF
      pop(2*num_keyword_args + num_regular_args)
  MAKE_FUNCTION:
      pop(1 + self.arg)
  BUILD_SLICE:
      pop(self.arg - 1)
+ INPLACE_ADD:
+ INPLACE_SUBTRACT:
+ INPLACE_MULTIPLY:
+ INPLACE_DIVIDE:
+ INPLACE_MODULO:
+ INPLACE_LSHIFT:
+ INPLACE_RSHIFT:
+ INPLACE_AND:
+ INPLACE_XOR:
+ INPLACE_OR:
+ INPLACE_POWER:
+ IMPORT_STAR:
+ UNPACK_SEQUENCE:
+ DUP_TOPX:
+ CALL_FUNCTION_VAR:
+ CALL_FUNCTION_KW:
+ CALL_FUNCTION_VAR_KW:
+ EXTENDED_ARG:
+     raise NotImplementedError('execute for this python 2.0
instuction is not yet implemented')
  
Index: execute_methods
===================================================================
RCS file:
/cvsroot/bytecodehacks/bytecodehacks/bytecodehacks/code_gen/execute_methods,v
retrieving revision 1.2
diff -c -6 -r1.2 execute_methods
*** execute_methods	2000/03/15 20:55:42	1.2
--- execute_methods	2000/10/05 15:30:00
***************
*** 26,37 ****
--- 26,43 ----
      stack[-2:]=[stack[-1],stack[-2]]
  ROT_THREE:
      stack[-3:]=[
          stack[-1],
          stack[-3],
          stack[-2]]
+ ROT_FOUR:
+     stack[-4:]=[
+         stack[-1],
+         stack[-4],
+         stack[-3],
+         stack[-2]]
  DUP_TOP:
      stack.append(stack[-1])
  UNARY_POSITIVE:
  UNARY_NEGATIVE:
  UNARY_NOT:
  UNARY_CONVERT:
***************
*** 77,88 ****
--- 83,98 ----
      del stack[-2:]    
  PRINT_EXPR:
  PRINT_ITEM:
      stack.pop()    
  PRINT_NEWLINE:
      pass
+ PRINT_ITEM_TO:
+     del stack[-2:]    
+ PRINT_NEWLINE_TO:
+     del stack[-1:]    
  BREAK_LOOP:
      raise "No jumps here!"
  LOAD_LOCALS:
      stack.append(self)
  RETURN_VALUE:
      stack[:] = []
***************
*** 152,157 ****
--- 162,186 ----
      num_regular_args=self.arg&0xFF
      stack[-2*num_keyword_args-num_regular_args-1:]=[self]
  MAKE_FUNCTION:
      stack[-self.arg-1:]=[self]
  BUILD_SLICE:
      stack[-self.arg:]=[self]
+ INPLACE_ADD:
+ INPLACE_SUBTRACT:
+ INPLACE_MULTIPLY:
+ INPLACE_DIVIDE:
+ INPLACE_MODULO:
+ INPLACE_LSHIFT:
+ INPLACE_RSHIFT:
+ INPLACE_AND:
+ INPLACE_XOR:
+ INPLACE_OR:
+ INPLACE_POWER:
+ IMPORT_STAR:
+ UNPACK_SEQUENCE:
+ DUP_TOPX:
+ CALL_FUNCTION_VAR:
+ CALL_FUNCTION_KW:
+ CALL_FUNCTION_VAR_KW:
+ EXTENDED_ARG:
+     raise NotImplementedError('stack_manipulate for this python 2.0
instuction is not yet implemented')





Toby Dickenson
tdi...@ge...