futurize stage2 core

joy/utils/compiler.py

@@ -11,6 +11,9 @@ functions, during inference?  Could I write out better code that way?
 In any event, I am proceeding with this sort of ad hoc way for now.
 '''
 from __future__ import print_function
+from builtins import next
+from builtins import str
+from builtins import object
 from joy.parser import text_to_expression, Symbol
 from joy.utils.stack import concat, iter_stack, list_to_stack
 from joy.library import SimpleFunctionWrapper, YIN_STACK_EFFECTS
@@ -33,7 +36,7 @@ class InfiniteStack(tuple):
     _NAMES = _names()
     next(_NAMES)
 
-    names = _NAMES.next
+    names = _NAMES.__next__
     reset = lambda _, _n=_NAMES: _n.send(-1)
 
     def __init__(self, code):

joy/utils/infinite_stack.py

@@ -1,3 +1,4 @@
+from builtins import str
 from joy.parser import Symbol
 
 
@@ -10,7 +11,7 @@ def _names():
 
 class InfiniteStack(tuple):
 
-  names = _names().next
+  names = _names().__next__
 
   def __iter__(self):
     if not self:

joy/utils/pretty_print.py

@@ -40,6 +40,7 @@ left.
 # (Kinda clunky and hacky.  This should be swapped out in favor of much
 # smarter stuff.)
 from __future__ import print_function
+from builtins import object
 from traceback import print_exc
 from .stack import expression_to_string, stack_to_string
 

joy/utils/stack.py

@@ -72,6 +72,7 @@ printed left-to-right.  These functions are written to support :doc:`../pretty`.
 '''
 
 
+from builtins import map
 def list_to_stack(el, stack=()):
   '''Convert a Python list (or other sequence) to a Joy stack::
 
@@ -129,7 +130,6 @@ def expression_to_string(expression):
 
 
 def _to_string(stack, f):
-  if isinstance(stack, long): return str(stack).rstrip('L')
   if not isinstance(stack, tuple): return repr(stack)
   if not stack: return ''  # shortcut
   return ' '.join(map(_s, f(stack)))
@@ -137,7 +137,6 @@ def _to_string(stack, f):
 
 _s = lambda s: (
   '[%s]' % expression_to_string(s) if isinstance(s, tuple)
-  else str(s).rstrip('L') if isinstance(s, long)
   else repr(s)
   )
 

joy/utils/types.py

@@ -18,6 +18,10 @@
 #    along with Thun.  If not see <http://www.gnu.org/licenses/>. 
 #
 from __future__ import print_function
+from builtins import str
+from builtins import map
+from past.builtins import basestring
+from builtins import object
 from logging import getLogger, addLevelName
 from functools import reduce
 
@@ -25,7 +29,7 @@ _log = getLogger(__name__)
 addLevelName(15, 'hmm')
 
 from collections import Counter
-from itertools import imap, chain, product
+from itertools import chain, product
 from inspect import stack as inspect_stack
 from joy.utils.stack import (
   concat,
@@ -41,7 +45,7 @@ class AnyJoyType(object):
   Joy type variable.  Represents any Joy value.
   '''
 
-  accept = tuple, int, float, long, complex, str, unicode, bool, Symbol
+  accept = tuple, int, float, int, complex, str, bool, Symbol
   prefix = 'a'
 
   def __init__(self, number):
@@ -81,7 +85,7 @@ class BooleanJoyType(AnyJoyType):
 
 
 class NumberJoyType(AnyJoyType):
-  accept = bool, int, float, long, complex
+  accept = bool, int, float, complex
   prefix = 'n'
 
 
@@ -105,7 +109,7 @@ class StackJoyType(AnyJoyType):
   accept = tuple
   prefix = 's'
 
-  def __nonzero__(self):
+  def __bool__(self):
     # Imitate () at the end of cons list.
     return False
 
@@ -453,7 +457,7 @@ def compilable(f):
   Return True if a stack effect represents a function that can be
   automatically compiled (to Python), False otherwise.
   '''
-  return isinstance(f, tuple) and all(imap(compilable, f)) or _stacky(f)
+  return isinstance(f, tuple) and all(map(compilable, f)) or _stacky(f)
 
 
 def doc_from_stack_effect(inputs, outputs=('??', ())):
@@ -721,7 +725,7 @@ def combinator_effect(number, *expect):
 
 
 def show(DEFS):
-  for name, stack_effect_comment in sorted(DEFS.iteritems()):
+  for name, stack_effect_comment in sorted(DEFS.items()):
     t = ' *'[compilable(stack_effect_comment)]
     print(name, '=', doc_from_stack_effect(*stack_effect_comment), t)
 
@@ -731,7 +735,7 @@ def generate_library_code(DEFS, f=None):
     import sys
     f = sys.stdout
   print('# GENERATED FILE. DO NOT EDIT.\n', file=f)
-  for name, stack_effect_comment in sorted(DEFS.iteritems()):
+  for name, stack_effect_comment in sorted(DEFS.items()):
     if not compilable(stack_effect_comment):
       continue
     print(file=f)