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DRY scanner34 and scanner35
handle 3.0..3.4 build maps as key/value pairs
This commit is contained in:
rocky
@@ -36,6 +36,7 @@ class Python3Parser(PythonParser):
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"""Add rule to grammar, but only if it hasn't been added previously
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"""
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if rule not in self.new_rules:
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# print("XXX ", rule) # debug
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self.new_rules.add(rule)
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self.addRule(rule, nop_func)
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customize[opname] = count
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@@ -506,11 +507,16 @@ class Python3Parser(PythonParser):
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rule = ('load_closure ::= %s%s' % (('LOAD_CLOSURE ' * v), opname))
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self.add_unique_rule(rule, opname, token.attr, customize)
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elif self.version >= 3.5 and opname_base == 'BUILD_MAP':
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elif opname_base == 'BUILD_MAP':
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kvlist_n = "kvlist_%s" % token.attr
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if self.version >= 3.5:
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rule = kvlist_n + ' ::= ' + 'expr ' * (token.attr*2)
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self.add_unique_rule(rule, opname, token.attr, customize)
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rule = "mapexpr ::= %s %s" % (kvlist_n, opname)
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else:
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rule = kvlist_n + ' ::= ' + 'expr expr STORE_MAP ' * token.attr
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self.add_unique_rule(rule, opname, token.attr, customize)
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rule = "mapexpr ::= %s %s" % (opname, kvlist_n)
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self.add_unique_rule(rule, opname, token.attr, customize)
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elif opname_base in ('UNPACK_TUPLE', 'UNPACK_SEQUENCE'):
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rule = 'unpack ::= ' + opname + ' designator' * token.attr
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@@ -21,6 +21,8 @@ Finally we save token information.
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from __future__ import print_function
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import dis
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import uncompyle6.scanners.dis3 as dis3
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from collections import namedtuple
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from array import array
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@@ -42,6 +44,142 @@ class Scanner3(scan.Scanner):
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self.version = version
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scan.Scanner.__init__(self, version)
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def disassemble3(self, co, opnames, classname=None, code_objects={}):
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# import dis; dis.disassemble(co) # DEBUG
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# Container for tokens
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tokens = []
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customize = {}
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self.code = array('B', co.co_code)
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self.build_lines_data(co)
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self.build_prev_op()
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bytecode = dis3.Bytecode(co, opnames)
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# self.lines contains (block,addrLastInstr)
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if classname:
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classname = '_' + classname.lstrip('_') + '__'
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def unmangle(name):
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if name.startswith(classname) and name[-2:] != '__':
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return name[len(classname) - 2:]
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return name
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else:
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pass
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# Scan for assertions. Later we will
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# turn 'LOAD_GLOBAL' to 'LOAD_ASSERT' for those
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# assertions
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self.load_asserts = set()
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bs = list(bytecode)
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n = len(bs)
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for i in range(n):
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inst = bs[i]
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if inst.opname == 'POP_JUMP_IF_TRUE' and i+1 < n:
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next_inst = bs[i+1]
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if (next_inst.opname == 'LOAD_GLOBAL' and
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next_inst.argval == 'AssertionError'):
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self.load_asserts.add(next_inst.offset)
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# Get jump targets
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# Format: {target offset: [jump offsets]}
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jump_targets = self.find_jump_targets()
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for inst in bytecode:
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if inst.offset in jump_targets:
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jump_idx = 0
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for jump_offset in jump_targets[inst.offset]:
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tokens.append(Token('COME_FROM', None, repr(jump_offset),
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offset='%s_%s' % (inst.offset, jump_idx)))
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jump_idx += 1
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pass
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pass
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pattr = inst.argrepr
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opname = inst.opname
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if opname in ['LOAD_CONST']:
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const = inst.argval
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if iscode(const):
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if const.co_name == '<lambda>':
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opname = 'LOAD_LAMBDA'
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elif const.co_name == '<genexpr>':
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opname = 'LOAD_GENEXPR'
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elif const.co_name == '<dictcomp>':
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opname = 'LOAD_DICTCOMP'
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elif const.co_name == '<setcomp>':
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opname = 'LOAD_SETCOMP'
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elif const.co_name == '<listcomp>':
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opname = 'LOAD_LISTCOMP'
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# verify() uses 'pattr' for comparison, since 'attr'
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# now holds Code(const) and thus can not be used
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# for comparison (todo: think about changing this)
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# pattr = 'code_object @ 0x%x %s->%s' %\
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# (id(const), const.co_filename, const.co_name)
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pattr = '<code_object ' + const.co_name + '>'
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else:
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pattr = const
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pass
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elif opname == 'MAKE_FUNCTION':
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argc = inst.argval
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attr = ((argc & 0xFF), (argc >> 8) & 0xFF, (argc >> 16) & 0x7FFF)
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pos_args, name_pair_args, annotate_args = attr
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if name_pair_args > 0:
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opname = 'MAKE_FUNCTION_N%d' % name_pair_args
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pass
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if annotate_args > 0:
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opname = '%s_A_%d' % [op_name, annotate_args]
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pass
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opname = '%s_%d' % (opname, pos_args)
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pattr = ("%d positional, %d keyword pair, %d annotated" %
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(pos_args, name_pair_args, annotate_args))
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tokens.append(
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Token(
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type_ = opname,
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attr = (pos_args, name_pair_args, annotate_args),
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pattr = pattr,
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offset = inst.offset,
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linestart = inst.starts_line)
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)
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continue
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elif opname in ('BUILD_LIST', 'BUILD_TUPLE', 'BUILD_SET', 'BUILD_SLICE',
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'BUILD_MAP', 'UNPACK_SEQUENCE', 'MAKE_CLOSURE',
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'RAISE_VARARGS'
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):
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pos_args = inst.argval
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if inst.opname != 'BUILD_SLICE':
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customize[opname] = pos_args
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pass
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opname = '%s_%d' % (opname, pos_args)
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elif opname == 'JUMP_ABSOLUTE':
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pattr = inst.argval
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target = self.get_target(inst.offset)
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if target < inst.offset:
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if (inst.offset in self.stmts and
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self.code[inst.offset+3] not in (END_FINALLY, POP_BLOCK)
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and inst.offset not in self.not_continue):
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opname = 'CONTINUE'
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else:
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opname = 'JUMP_BACK'
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elif inst.offset in self.load_asserts:
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opname = 'LOAD_ASSERT'
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tokens.append(
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Token(
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type_ = opname,
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attr = inst.argval,
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pattr = pattr,
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offset = inst.offset,
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linestart = inst.starts_line,
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)
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)
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pass
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return tokens, {}
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def disassemble_generic(self, co, classname=None, code_objects={}):
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"""
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Convert code object <co> into a sequence of tokens.
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@@ -2,180 +2,24 @@
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"""
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Python 3.4 bytecode scanner/deparser
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This overlaps Python's 3.4's dis module, and in fact in some cases
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we just fall back to that. But the intent is that it can be run from
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Python 2 and other versions of Python. Also, we save token information
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for later use in deparsing.
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This sets up opcodes Python's 3.5 and calls a generalized
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scanner routine for Python 3.
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"""
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from __future__ import print_function
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import dis, inspect
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from array import array
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import uncompyle6.scanners.dis3 as dis3
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import uncompyle6.scanners.scanner3 as scan3
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from uncompyle6.opcodes.opcode_34 import opname as opnames
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from uncompyle6 import PYTHON_VERSION
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from uncompyle6.code import iscode
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from uncompyle6.scanner import Token
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# Get all the opcodes into globals
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globals().update(dis.opmap)
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import uncompyle6.opcodes.opcode_34
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# verify uses JUMP_OPs from here
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JUMP_OPs = uncompyle6.opcodes.opcode_34.JUMP_OPs
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from uncompyle6.opcodes.opcode_34 import *
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# bytecode verification, verify(), uses JUMP_OPs from here
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from uncompyle6.opcodes.opcode_34 import JUMP_OPs
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class Scanner34(scan3.Scanner3):
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## FIXME: DRY with scanner35.py
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# Note: we can't use built-in disassembly routines, unless
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# we do post-processing like we do here.
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def disassemble(self, co, classname=None, code_objects={}):
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# import dis; dis.disassemble(co) # DEBUG
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# Container for tokens
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tokens = []
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customize = {}
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self.code = array('B', co.co_code)
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self.build_lines_data(co)
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self.build_prev_op()
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bytecode = dis3.Bytecode(co, opnames)
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# self.lines contains (block,addrLastInstr)
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if classname:
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classname = '_' + classname.lstrip('_') + '__'
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def unmangle(name):
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if name.startswith(classname) and name[-2:] != '__':
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return name[len(classname) - 2:]
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return name
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else:
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pass
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# Scan for assertions. Later we will
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# turn 'LOAD_GLOBAL' to 'LOAD_ASSERT' for those
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# assertions
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self.load_asserts = set()
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bs = list(bytecode)
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n = len(bs)
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for i in range(n):
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inst = bs[i]
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if inst.opname == 'POP_JUMP_IF_TRUE' and i+1 < n:
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next_inst = bs[i+1]
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if (next_inst.opname == 'LOAD_GLOBAL' and
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next_inst.argval == 'AssertionError'):
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self.load_asserts.add(next_inst.offset)
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# Get jump targets
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# Format: {target offset: [jump offsets]}
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jump_targets = self.find_jump_targets()
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for inst in bytecode:
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if inst.offset in jump_targets:
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jump_idx = 0
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for jump_offset in jump_targets[inst.offset]:
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tokens.append(Token('COME_FROM', None, repr(jump_offset),
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offset='%s_%s' % (inst.offset, jump_idx)))
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jump_idx += 1
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pass
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pass
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pattr = inst.argrepr
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opname = inst.opname
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if opname in ['LOAD_CONST']:
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const = inst.argval
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if iscode(const):
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if const.co_name == '<lambda>':
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opname = 'LOAD_LAMBDA'
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elif const.co_name == '<genexpr>':
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opname = 'LOAD_GENEXPR'
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elif const.co_name == '<dictcomp>':
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opname = 'LOAD_DICTCOMP'
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elif const.co_name == '<setcomp>':
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opname = 'LOAD_SETCOMP'
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elif const.co_name == '<listcomp>':
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opname = 'LOAD_LISTCOMP'
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# verify() uses 'pattr' for comparison, since 'attr'
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# now holds Code(const) and thus can not be used
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# for comparison (todo: think about changing this)
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# pattr = 'code_object @ 0x%x %s->%s' %\
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# (id(const), const.co_filename, const.co_name)
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pattr = '<code_object ' + const.co_name + '>'
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else:
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pattr = const
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pass
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elif opname == 'MAKE_FUNCTION':
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argc = inst.argval
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attr = ((argc & 0xFF), (argc >> 8) & 0xFF, (argc >> 16) & 0x7FFF)
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pos_args, name_pair_args, annotate_args = attr
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if name_pair_args > 0:
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opname = 'MAKE_FUNCTION_N%d' % name_pair_args
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pass
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if annotate_args > 0:
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opname = '%s_A_%d' % [op_name, annotate_args]
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pass
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opname = '%s_%d' % (opname, pos_args)
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pattr = ("%d positional, %d keyword pair, %d annotated" %
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(pos_args, name_pair_args, annotate_args))
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tokens.append(
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Token(
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type_ = opname,
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attr = (pos_args, name_pair_args, annotate_args),
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pattr = pattr,
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offset = inst.offset,
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linestart = inst.starts_line)
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)
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continue
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# Note: care is needed in merging this with python3.5
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# and BUILD_MAP and parse3 custom rules.
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# BUILD_MAP in 3.4 comes at the beginning and each tuple has STORE_MAP
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# in 3.5 it comes at the end and STORE_MAP
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# see parse3.py
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elif opname in ('BUILD_LIST', 'BUILD_TUPLE', 'BUILD_SET', 'BUILD_SLICE',
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'UNPACK_SEQUENCE', 'MAKE_CLOSURE',
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'RAISE_VARARGS'
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):
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pos_args = inst.argval
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if inst.opname != 'BUILD_SLICE':
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customize[opname] = pos_args
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pass
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opname = '%s_%d' % (opname, pos_args)
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elif opname == 'JUMP_ABSOLUTE':
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pattr = inst.argval
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target = self.get_target(inst.offset)
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if target < inst.offset:
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if (inst.offset in self.stmts and
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self.code[inst.offset+3] not in (END_FINALLY, POP_BLOCK)
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and inst.offset not in self.not_continue):
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opname = 'CONTINUE'
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else:
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opname = 'JUMP_BACK'
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elif inst.offset in self.load_asserts:
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opname = 'LOAD_ASSERT'
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tokens.append(
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Token(
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type_ = opname,
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attr = inst.argval,
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pattr = pattr,
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offset = inst.offset,
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linestart = inst.starts_line,
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)
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)
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pass
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return tokens, {}
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return self.disassemble3(co, opnames, classname, code_objects)
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if __name__ == "__main__":
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import inspect
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co = inspect.currentframe().f_code
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tokens, customize = Scanner34(3.4).disassemble(co)
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for t in tokens:
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@@ -2,171 +2,24 @@
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"""
|
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Python 3.5 bytecode scanner/deparser
|
||||
|
||||
This overlaps Python's 3.5's dis module, and in fact in some cases
|
||||
we just fall back to that. But the intent is that it can be run from
|
||||
Python 2 and other versions of Python. Also, we save token information
|
||||
for later use in deparsing.
|
||||
This sets up opcodes Python's 3.5 and calls a generalized
|
||||
scanner routine for Python 3.
|
||||
"""
|
||||
|
||||
from __future__ import print_function
|
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|
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import inspect
|
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from array import array
|
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import uncompyle6.scanners.dis3 as dis3
|
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import uncompyle6.scanners.scanner3 as scan3
|
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from uncompyle6.opcodes.opcode_35 import opname as opnames
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from uncompyle6.code import iscode
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from uncompyle6.scanner import Token
|
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import uncompyle6.opcodes.opcode_35
|
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# verify uses JUMP_OPs from here
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JUMP_OPs = uncompyle6.opcodes.opcode_35.JUMP_OPs
|
||||
|
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from uncompyle6.opcodes.opcode_35 import *
|
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# bytecode verification, verify(), uses JUMP_OPs from here
|
||||
from uncompyle6.opcodes.opcode_35 import JUMP_OPs
|
||||
|
||||
class Scanner35(scan3.Scanner3):
|
||||
|
||||
## FIXME: DRY with scanner34.py
|
||||
# Note: we can't use built-in disassembly routines, unless
|
||||
# we do post-processing like we do here.
|
||||
def disassemble(self, co, classname=None, code_objects={}):
|
||||
|
||||
# import dis; dis.disassemble(co) # DEBUG
|
||||
|
||||
# Container for tokens
|
||||
tokens = []
|
||||
|
||||
customize = {}
|
||||
self.code = array('B', co.co_code)
|
||||
self.build_lines_data(co)
|
||||
self.build_prev_op()
|
||||
|
||||
bytecode = dis3.Bytecode(co, opnames)
|
||||
|
||||
# self.lines contains (block,addrLastInstr)
|
||||
if classname:
|
||||
classname = '_' + classname.lstrip('_') + '__'
|
||||
|
||||
def unmangle(name):
|
||||
if name.startswith(classname) and name[-2:] != '__':
|
||||
return name[len(classname) - 2:]
|
||||
return name
|
||||
else:
|
||||
pass
|
||||
|
||||
# Scan for assertions. Later we will
|
||||
# turn 'LOAD_GLOBAL' to 'LOAD_ASSERT' for those
|
||||
# assertions
|
||||
self.load_asserts = set()
|
||||
bs = list(bytecode)
|
||||
n = len(bs)
|
||||
for i in range(n):
|
||||
inst = bs[i]
|
||||
|
||||
if inst.opname == 'POP_JUMP_IF_TRUE' and i+1 < n:
|
||||
next_inst = bs[i+1]
|
||||
if (next_inst.opname == 'LOAD_GLOBAL' and
|
||||
next_inst.argval == 'AssertionError'):
|
||||
self.load_asserts.add(next_inst.offset)
|
||||
|
||||
# Get jump targets
|
||||
# Format: {target offset: [jump offsets]}
|
||||
jump_targets = self.find_jump_targets()
|
||||
|
||||
for inst in bytecode:
|
||||
if inst.offset in jump_targets:
|
||||
jump_idx = 0
|
||||
for jump_offset in jump_targets[inst.offset]:
|
||||
tokens.append(Token('COME_FROM', None, repr(jump_offset),
|
||||
offset='%s_%s' % (inst.offset, jump_idx)))
|
||||
jump_idx += 1
|
||||
pass
|
||||
pass
|
||||
|
||||
pattr = inst.argrepr
|
||||
opname = inst.opname
|
||||
|
||||
if opname in ['LOAD_CONST']:
|
||||
const = inst.argval
|
||||
if iscode(const):
|
||||
if const.co_name == '<lambda>':
|
||||
opname = 'LOAD_LAMBDA'
|
||||
elif const.co_name == '<genexpr>':
|
||||
opname = 'LOAD_GENEXPR'
|
||||
elif const.co_name == '<dictcomp>':
|
||||
opname = 'LOAD_DICTCOMP'
|
||||
elif const.co_name == '<setcomp>':
|
||||
opname = 'LOAD_SETCOMP'
|
||||
elif const.co_name == '<listcomp>':
|
||||
opname = 'LOAD_LISTCOMP'
|
||||
# verify() uses 'pattr' for comparison, since 'attr'
|
||||
# now holds Code(const) and thus can not be used
|
||||
# for comparison (todo: think about changing this)
|
||||
# pattr = 'code_object @ 0x%x %s->%s' %\
|
||||
# (id(const), const.co_filename, const.co_name)
|
||||
pattr = '<code_object ' + const.co_name + '>'
|
||||
else:
|
||||
pattr = const
|
||||
pass
|
||||
elif opname == 'MAKE_FUNCTION':
|
||||
argc = inst.argval
|
||||
attr = ((argc & 0xFF), (argc >> 8) & 0xFF, (argc >> 16) & 0x7FFF)
|
||||
pos_args, name_pair_args, annotate_args = attr
|
||||
if name_pair_args > 0:
|
||||
opname = 'MAKE_FUNCTION_N%d' % name_pair_args
|
||||
pass
|
||||
if annotate_args > 0:
|
||||
opname = '%s_A_%d' % [op_name, annotate_args]
|
||||
pass
|
||||
opname = '%s_%d' % (opname, pos_args)
|
||||
pattr = ("%d positional, %d keyword pair, %d annotated" %
|
||||
(pos_args, name_pair_args, annotate_args))
|
||||
tokens.append(
|
||||
Token(
|
||||
type_ = opname,
|
||||
attr = (pos_args, name_pair_args, annotate_args),
|
||||
pattr = pattr,
|
||||
offset = inst.offset,
|
||||
linestart = inst.starts_line)
|
||||
)
|
||||
continue
|
||||
elif opname in ('BUILD_LIST', 'BUILD_TUPLE', 'BUILD_SET', 'BUILD_SLICE',
|
||||
'BUILD_MAP', 'UNPACK_SEQUENCE', 'MAKE_CLOSURE',
|
||||
'RAISE_VARARGS'
|
||||
):
|
||||
pos_args = inst.argval
|
||||
if inst.opname != 'BUILD_SLICE':
|
||||
customize[opname] = pos_args
|
||||
pass
|
||||
opname = '%s_%d' % (opname, pos_args)
|
||||
elif opname == 'JUMP_ABSOLUTE':
|
||||
pattr = inst.argval
|
||||
target = self.get_target(inst.offset)
|
||||
if target < inst.offset:
|
||||
if (inst.offset in self.stmts and
|
||||
self.code[inst.offset+3] not in (END_FINALLY, POP_BLOCK)
|
||||
and inst.offset not in self.not_continue):
|
||||
opname = 'CONTINUE'
|
||||
else:
|
||||
opname = 'JUMP_BACK'
|
||||
|
||||
elif inst.offset in self.load_asserts:
|
||||
opname = 'LOAD_ASSERT'
|
||||
|
||||
tokens.append(
|
||||
Token(
|
||||
type_ = opname,
|
||||
attr = inst.argval,
|
||||
pattr = pattr,
|
||||
offset = inst.offset,
|
||||
linestart = inst.starts_line,
|
||||
)
|
||||
)
|
||||
pass
|
||||
return tokens, {}
|
||||
return self.disassemble3(co, opnames, classname, code_objects)
|
||||
|
||||
if __name__ == "__main__":
|
||||
import inspect
|
||||
co = inspect.currentframe().f_code
|
||||
tokens, customize = Scanner35(3.5).disassemble(co)
|
||||
for t in tokens:
|
||||
|
||||
@@ -992,14 +992,44 @@ class FragmentsWalker(pysource.SourceWalker, object):
|
||||
"""
|
||||
p = self.prec
|
||||
self.prec = 100
|
||||
assert node[-1] == 'kvlist'
|
||||
kv_node = node[-1] # goto kvlist
|
||||
|
||||
self.indentMore(INDENT_PER_LEVEL)
|
||||
line_seperator = ',\n' + self.indent
|
||||
sep = INDENT_PER_LEVEL[:-1]
|
||||
start = len(self.f.getvalue())
|
||||
self.write('{')
|
||||
|
||||
if node[0].type.startswith('kvlist'):
|
||||
# Python 3.5+ style key/value list in mapexpr
|
||||
kv_node = node[0]
|
||||
l = list(kv_node)
|
||||
i = 0
|
||||
while i < len(l):
|
||||
l[1].parent = kv_node
|
||||
l[i+1].parent = kv_node
|
||||
name = self.traverse(l[i], indent='')
|
||||
value = self.traverse(l[i+1], indent=self.indent+(len(name)+2)*' ')
|
||||
self.write(sep, name, ': ', value)
|
||||
sep = line_seperator
|
||||
i += 2
|
||||
elif node[1].type.startswith('kvlist'):
|
||||
# Python 3.0..3.4 style key/value list in mapexpr
|
||||
kv_node = node[1]
|
||||
l = list(kv_node)
|
||||
i = 0
|
||||
while i < len(l):
|
||||
l[1].parent = kv_node
|
||||
l[i+1].parent = kv_node
|
||||
name = self.traverse(l[i+1], indent='')
|
||||
value = self.traverse(l[i], indent=self.indent+(len(name)+2)*' ')
|
||||
self.write(sep, name, ': ', value)
|
||||
sep = line_seperator
|
||||
i += 3
|
||||
else:
|
||||
# Python 2 style kvlist
|
||||
assert node[-1] == 'kvlist'
|
||||
kv_node = node[-1] # goto kvlist
|
||||
|
||||
for kv in kv_node:
|
||||
assert kv in ('kv', 'kv2', 'kv3')
|
||||
# kv ::= DUP_TOP expr ROT_TWO expr STORE_SUBSCR
|
||||
|
||||
@@ -1238,7 +1238,7 @@ class SourceWalker(GenericASTTraversal, object):
|
||||
self.write('{')
|
||||
|
||||
if node[0].type.startswith('kvlist'):
|
||||
# Python 3.5 style key/value list in mapexpr
|
||||
# Python 3.5+ style key/value list in mapexpr
|
||||
l = list(node[0])
|
||||
i = 0
|
||||
while i < len(l):
|
||||
@@ -1247,11 +1247,22 @@ class SourceWalker(GenericASTTraversal, object):
|
||||
self.write(sep, name, ': ', value)
|
||||
sep = line_seperator
|
||||
i += 2
|
||||
elif node[1].type.startswith('kvlist'):
|
||||
# Python 3.0..3.4 style key/value list in mapexpr
|
||||
l = list(node[1])
|
||||
i = 0
|
||||
while i < len(l):
|
||||
name = self.traverse(l[i+1], indent='')
|
||||
value = self.traverse(l[i], indent=self.indent+(len(name)+2)*' ')
|
||||
self.write(sep, name, ': ', value)
|
||||
sep = line_seperator
|
||||
i += 3
|
||||
else:
|
||||
# Python 2 style kvlist
|
||||
assert node[-1] == 'kvlist'
|
||||
node = node[-1] # goto kvlist
|
||||
kv_node = node[-1] # goto kvlist
|
||||
|
||||
for kv in node:
|
||||
for kv in kv_node:
|
||||
assert kv in ('kv', 'kv2', 'kv3')
|
||||
# kv ::= DUP_TOP expr ROT_TWO expr STORE_SUBSCR
|
||||
# kv2 ::= DUP_TOP expr expr ROT_THREE STORE_SUBSCR
|
||||
|
||||
Reference in New Issue
Block a user