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292 lines
11 KiB
Python
292 lines
11 KiB
Python
# Copyright (c) 2018-2019 by Rocky Bernstein
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""Isolate Python 3 version-specific semantic actions here.
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"""
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from uncompyle6.semantics.consts import TABLE_DIRECT
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from xdis.code import iscode
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from uncompyle6.semantics.make_function import make_function3_annotate
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from uncompyle6.semantics.customize35 import customize_for_version35
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from uncompyle6.semantics.customize36 import customize_for_version36
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from uncompyle6.semantics.customize37 import customize_for_version37
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from uncompyle6.semantics.customize38 import customize_for_version38
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def customize_for_version3(self, version):
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TABLE_DIRECT.update({
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'function_def_annotate': ( '\n\n%|def %c%c\n', -1, 0),
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'store_locals': ( '%|# inspect.currentframe().f_locals = __locals__\n', ),
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})
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assert version >= 3.0
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def n_classdef3(node):
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# class definition ('class X(A,B,C):')
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cclass = self.currentclass
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# Pick out various needed bits of information
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# * class_name - the name of the class
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# * subclass_info - the parameters to the class e.g.
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# class Foo(bar, baz)
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# ----------
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# * subclass_code - the code for the subclass body
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subclass_info = None
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if node == 'classdefdeco2':
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if self.version >= 3.6:
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class_name = node[1][1].pattr
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elif self.version <= 3.3:
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class_name = node[2][0].pattr
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else:
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class_name = node[1][2].pattr
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build_class = node
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else:
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build_class = node[0]
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if self.version >= 3.6:
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if build_class == 'build_class_kw':
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mkfunc = build_class[1]
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assert mkfunc == 'mkfunc'
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subclass_info = build_class
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if hasattr(mkfunc[0], 'attr') and iscode(mkfunc[0].attr):
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subclass_code = mkfunc[0].attr
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else:
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assert mkfunc[0] == 'load_closure'
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subclass_code = mkfunc[1].attr
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assert iscode(subclass_code)
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if build_class[1][0] == 'load_closure':
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code_node = build_class[1][1]
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else:
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code_node = build_class[1][0]
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class_name = code_node.attr.co_name
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else:
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class_name = node[1][0].pattr
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build_class = node[0]
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assert 'mkfunc' == build_class[1]
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mkfunc = build_class[1]
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if mkfunc[0] in ('kwargs', 'no_kwargs'):
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if 3.0 <= self.version <= 3.2:
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for n in mkfunc:
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if hasattr(n, 'attr') and iscode(n.attr):
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subclass_code = n.attr
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break
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elif n == 'expr':
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subclass_code = n[0].attr
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pass
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pass
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else:
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for n in mkfunc:
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if hasattr(n, 'attr') and iscode(n.attr):
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subclass_code = n.attr
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break
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pass
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pass
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if node == 'classdefdeco2':
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subclass_info = node
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else:
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subclass_info = node[0]
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elif build_class[1][0] == 'load_closure':
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# Python 3 with closures not functions
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load_closure = build_class[1]
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if hasattr(load_closure[-3], 'attr'):
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# Python 3.3 classes with closures work like this.
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# Note have to test before 3.2 case because
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# index -2 also has an attr.
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subclass_code = load_closure[-3].attr
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elif hasattr(load_closure[-2], 'attr'):
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# Python 3.2 works like this
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subclass_code = load_closure[-2].attr
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else:
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raise 'Internal Error n_classdef: cannot find class body'
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if hasattr(build_class[3], '__len__'):
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if not subclass_info:
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subclass_info = build_class[3]
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elif hasattr(build_class[2], '__len__'):
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subclass_info = build_class[2]
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else:
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raise 'Internal Error n_classdef: cannot superclass name'
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elif self.version >= 3.6 and node == 'classdefdeco2':
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subclass_info = node
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subclass_code = build_class[1][0].attr
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elif not subclass_info:
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if mkfunc[0] in ('no_kwargs', 'kwargs'):
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subclass_code = mkfunc[1].attr
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else:
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subclass_code = mkfunc[0].attr
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if node == 'classdefdeco2':
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subclass_info = node
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else:
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subclass_info = node[0]
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if (node == 'classdefdeco2'):
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self.write('\n')
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else:
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self.write('\n\n')
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self.currentclass = str(class_name)
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self.write(self.indent, 'class ', self.currentclass)
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self.print_super_classes3(subclass_info)
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self.println(':')
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# class body
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self.indent_more()
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self.build_class(subclass_code)
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self.indent_less()
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self.currentclass = cclass
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if len(self.param_stack) > 1:
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self.write('\n\n')
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else:
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self.write('\n\n\n')
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self.prune()
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self.n_classdef3 = n_classdef3
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if version == 3.0:
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# In Python 3.0 there is code to move from _[dd] into
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# the iteration variable. These rules we can ignore
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# since we pick up the iteration variable some other way and
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# we definitely don't include in the source _[dd].
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def n_comp_iter(node):
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if node[0] == 'expr':
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n = node[0][0]
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if (n == 'LOAD_FAST' and
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n.pattr[0:2] == '_['):
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self.prune()
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pass
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pass
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# Not this special case, procede as normal...
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self.default(node)
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self.n_comp_iter = n_comp_iter
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if version >= 3.3:
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def n_yield_from(node):
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self.write('yield from')
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self.write(' ')
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if 3.3 <= self.version <= 3.4:
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self.preorder(node[0][0][0][0])
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elif self.version >= 3.5:
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self.preorder(node[0])
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else:
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assert False, "dunno about this python version"
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self.prune() # stop recursing
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self.n_yield_from = n_yield_from
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if 3.2 <= version <= 3.4:
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def n_call(node):
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mapping = self._get_mapping(node)
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key = node
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for i in mapping[1:]:
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key = key[i]
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pass
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if key.kind.startswith('CALL_FUNCTION_VAR_KW'):
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# We may want to fill this in...
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# But it is distinct from CALL_FUNCTION_VAR below
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pass
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elif key.kind.startswith('CALL_FUNCTION_VAR'):
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# CALL_FUNCTION_VAR's top element of the stack contains
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# the variable argument list, then comes
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# annotation args, then keyword args.
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# In the most least-top-most stack entry, but position 1
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# in node order, the positional args.
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argc = node[-1].attr
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nargs = argc & 0xFF
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kwargs = (argc >> 8) & 0xFF
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# FIXME: handle annotation args
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if kwargs != 0:
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# kwargs == 0 is handled by the table entry
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# Should probably handle it here though.
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if nargs == 0:
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template = ('%c(*%c, %C)',
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0, -2, (1, kwargs+1, ', '))
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else:
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template = ('%c(%C, *%c, %C)',
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0, (1, nargs+1, ', '),
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-2, (-2-kwargs, -2, ', '))
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self.template_engine(template, node)
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self.prune()
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self.default(node)
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self.n_call = n_call
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def n_mkfunc_annotate(node):
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if self.version >= 3.3 or node[-2] == 'kwargs':
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# LOAD_CONST code object ..
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# LOAD_CONST 'x0' if >= 3.3
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# EXTENDED_ARG
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# MAKE_FUNCTION ..
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code = node[-4]
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elif node[-3] == 'expr':
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code = node[-3][0]
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else:
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# LOAD_CONST code object ..
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# MAKE_FUNCTION ..
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code = node[-3]
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self.indent_more()
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for annotate_last in range(len(node)-1, -1, -1):
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if node[annotate_last] == 'annotate_tuple':
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break
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# FIXME: the real situation is that when derived from
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# function_def_annotate we the name has been filled in.
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# But when derived from funcdefdeco it hasn't Would like a better
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# way to distinquish.
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if self.f.getvalue()[-4:] == 'def ':
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self.write(code.attr.co_name)
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# FIXME: handle and pass full annotate args
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make_function3_annotate(self, node, is_lambda=False,
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code_node=code, annotate_last=annotate_last)
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if len(self.param_stack) > 1:
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self.write('\n\n')
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else:
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self.write('\n\n\n')
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self.indent_less()
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self.prune() # stop recursing
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self.n_mkfunc_annotate = n_mkfunc_annotate
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TABLE_DIRECT.update({
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'tryelsestmtl3': ( '%|try:\n%+%c%-%c%|else:\n%+%c%-',
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(1, 'suite_stmts_opt'),
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(3, 'except_handler'),
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(5, 'else_suitel') ),
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})
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if version >= 3.4:
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########################
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# Python 3.4+ Additions
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#######################
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TABLE_DIRECT.update({
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'LOAD_CLASSDEREF': ( '%{pattr}', ),
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})
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if version >= 3.5:
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customize_for_version35(self, version)
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if version >= 3.6:
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customize_for_version36(self, version)
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if version >= 3.7:
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customize_for_version37(self, version)
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if version >= 3.8:
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customize_for_version38(self, version)
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pass # version >= 3.8
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pass # 3.7
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pass # 3.6
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pass # 3.5
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pass # 3.4
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return
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