Merge branch 'modular-data-extract'

Commits in this branch are prefixed with "Extraction:"
This branch refactors data extraction. All such functionality has been moved to the yt_data_extract module.
Responses from requests are given to the module and it parses them into a consistent, more useful format.
The dependency on youtube-dl has also been dropped and this functionality has been built from scratch for these reasons:
(1) I've noticed youtube-dl breaks more often than invidious (which uses watch page extraction built from scratch) in response to changes from Youtube, so I'm hoping what I wrote will also be less brittle.
(2) Such breakage is inconvenient because I have to manually merge the fixes since I had to make changes to youtube-dl to make it do things such as extracting related videos.
(3) I have no control over error handling and request pooling with youtube-dl, since it does all the requests (these would require intrusive changes I don't want to maintain).
(4) I will now be able to finally display the number of comments and whether comments are disabled without making additional requests.

1 files changed, 0 insertions, 834 deletions

diff --git a/youtube_dl/swfinterp.py b/youtube_dl/swfinterp.py
deleted file mode 100644
index 0c71585..0000000
--- a/youtube_dl/swfinterp.py
+++ /dev/null
@@ -1,834 +0,0 @@
-from __future__ import unicode_literals
-
-import collections
-import io
-import zlib
-
-from .compat import (
-    compat_str,
-    compat_struct_unpack,
-)
-from .utils import (
-    ExtractorError,
-)
-
-
-def _extract_tags(file_contents):
-    if file_contents[1:3] != b'WS':
-        raise ExtractorError(
-            'Not an SWF file; header is %r' % file_contents[:3])
-    if file_contents[:1] == b'C':
-        content = zlib.decompress(file_contents[8:])
-    else:
-        raise NotImplementedError(
-            'Unsupported compression format %r' %
-            file_contents[:1])
-
-    # Determine number of bits in framesize rectangle
-    framesize_nbits = compat_struct_unpack('!B', content[:1])[0] >> 3
-    framesize_len = (5 + 4 * framesize_nbits + 7) // 8
-
-    pos = framesize_len + 2 + 2
-    while pos < len(content):
-        header16 = compat_struct_unpack('<H', content[pos:pos + 2])[0]
-        pos += 2
-        tag_code = header16 >> 6
-        tag_len = header16 & 0x3f
-        if tag_len == 0x3f:
-            tag_len = compat_struct_unpack('<I', content[pos:pos + 4])[0]
-            pos += 4
-        assert pos + tag_len <= len(content), \
-            ('Tag %d ends at %d+%d - that\'s longer than the file (%d)'
-                % (tag_code, pos, tag_len, len(content)))
-        yield (tag_code, content[pos:pos + tag_len])
-        pos += tag_len
-
-
-class _AVMClass_Object(object):
-    def __init__(self, avm_class):
-        self.avm_class = avm_class
-
-    def __repr__(self):
-        return '%s#%x' % (self.avm_class.name, id(self))
-
-
-class _ScopeDict(dict):
-    def __init__(self, avm_class):
-        super(_ScopeDict, self).__init__()
-        self.avm_class = avm_class
-
-    def __repr__(self):
-        return '%s__Scope(%s)' % (
-            self.avm_class.name,
-            super(_ScopeDict, self).__repr__())
-
-
-class _AVMClass(object):
-    def __init__(self, name_idx, name, static_properties=None):
-        self.name_idx = name_idx
-        self.name = name
-        self.method_names = {}
-        self.method_idxs = {}
-        self.methods = {}
-        self.method_pyfunctions = {}
-        self.static_properties = static_properties if static_properties else {}
-
-        self.variables = _ScopeDict(self)
-        self.constants = {}
-
-    def make_object(self):
-        return _AVMClass_Object(self)
-
-    def __repr__(self):
-        return '_AVMClass(%s)' % (self.name)
-
-    def register_methods(self, methods):
-        self.method_names.update(methods.items())
-        self.method_idxs.update(dict(
-            (idx, name)
-            for name, idx in methods.items()))
-
-
-class _Multiname(object):
-    def __init__(self, kind):
-        self.kind = kind
-
-    def __repr__(self):
-        return '[MULTINAME kind: 0x%x]' % self.kind
-
-
-def _read_int(reader):
-    res = 0
-    shift = 0
-    for _ in range(5):
-        buf = reader.read(1)
-        assert len(buf) == 1
-        b = compat_struct_unpack('<B', buf)[0]
-        res = res | ((b & 0x7f) << shift)
-        if b & 0x80 == 0:
-            break
-        shift += 7
-    return res
-
-
-def _u30(reader):
-    res = _read_int(reader)
-    assert res & 0xf0000000 == 0
-    return res
-
-
-_u32 = _read_int
-
-
-def _s32(reader):
-    v = _read_int(reader)
-    if v & 0x80000000 != 0:
-        v = - ((v ^ 0xffffffff) + 1)
-    return v
-
-
-def _s24(reader):
-    bs = reader.read(3)
-    assert len(bs) == 3
-    last_byte = b'\xff' if (ord(bs[2:3]) >= 0x80) else b'\x00'
-    return compat_struct_unpack('<i', bs + last_byte)[0]
-
-
-def _read_string(reader):
-    slen = _u30(reader)
-    resb = reader.read(slen)
-    assert len(resb) == slen
-    return resb.decode('utf-8')
-
-
-def _read_bytes(count, reader):
-    assert count >= 0
-    resb = reader.read(count)
-    assert len(resb) == count
-    return resb
-
-
-def _read_byte(reader):
-    resb = _read_bytes(1, reader=reader)
-    res = compat_struct_unpack('<B', resb)[0]
-    return res
-
-
-StringClass = _AVMClass('(no name idx)', 'String')
-ByteArrayClass = _AVMClass('(no name idx)', 'ByteArray')
-TimerClass = _AVMClass('(no name idx)', 'Timer')
-TimerEventClass = _AVMClass('(no name idx)', 'TimerEvent', {'TIMER': 'timer'})
-_builtin_classes = {
-    StringClass.name: StringClass,
-    ByteArrayClass.name: ByteArrayClass,
-    TimerClass.name: TimerClass,
-    TimerEventClass.name: TimerEventClass,
-}
-
-
-class _Undefined(object):
-    def __bool__(self):
-        return False
-    __nonzero__ = __bool__
-
-    def __hash__(self):
-        return 0
-
-    def __str__(self):
-        return 'undefined'
-    __repr__ = __str__
-
-
-undefined = _Undefined()
-
-
-class SWFInterpreter(object):
-    def __init__(self, file_contents):
-        self._patched_functions = {
-            (TimerClass, 'addEventListener'): lambda params: undefined,
-        }
-        code_tag = next(tag
-                        for tag_code, tag in _extract_tags(file_contents)
-                        if tag_code == 82)
-        p = code_tag.index(b'\0', 4) + 1
-        code_reader = io.BytesIO(code_tag[p:])
-
-        # Parse ABC (AVM2 ByteCode)
-
-        # Define a couple convenience methods
-        u30 = lambda *args: _u30(*args, reader=code_reader)
-        s32 = lambda *args: _s32(*args, reader=code_reader)
-        u32 = lambda *args: _u32(*args, reader=code_reader)
-        read_bytes = lambda *args: _read_bytes(*args, reader=code_reader)
-        read_byte = lambda *args: _read_byte(*args, reader=code_reader)
-
-        # minor_version + major_version
-        read_bytes(2 + 2)
-
-        # Constant pool
-        int_count = u30()
-        self.constant_ints = [0]
-        for _c in range(1, int_count):
-            self.constant_ints.append(s32())
-        self.constant_uints = [0]
-        uint_count = u30()
-        for _c in range(1, uint_count):
-            self.constant_uints.append(u32())
-        double_count = u30()
-        read_bytes(max(0, (double_count - 1)) * 8)
-        string_count = u30()
-        self.constant_strings = ['']
-        for _c in range(1, string_count):
-            s = _read_string(code_reader)
-            self.constant_strings.append(s)
-        namespace_count = u30()
-        for _c in range(1, namespace_count):
-            read_bytes(1)  # kind
-            u30()  # name
-        ns_set_count = u30()
-        for _c in range(1, ns_set_count):
-            count = u30()
-            for _c2 in range(count):
-                u30()
-        multiname_count = u30()
-        MULTINAME_SIZES = {
-            0x07: 2,  # QName
-            0x0d: 2,  # QNameA
-            0x0f: 1,  # RTQName
-            0x10: 1,  # RTQNameA
-            0x11: 0,  # RTQNameL
-            0x12: 0,  # RTQNameLA
-            0x09: 2,  # Multiname
-            0x0e: 2,  # MultinameA
-            0x1b: 1,  # MultinameL
-            0x1c: 1,  # MultinameLA
-        }
-        self.multinames = ['']
-        for _c in range(1, multiname_count):
-            kind = u30()
-            assert kind in MULTINAME_SIZES, 'Invalid multiname kind %r' % kind
-            if kind == 0x07:
-                u30()  # namespace_idx
-                name_idx = u30()
-                self.multinames.append(self.constant_strings[name_idx])
-            elif kind == 0x09:
-                name_idx = u30()
-                u30()
-                self.multinames.append(self.constant_strings[name_idx])
-            else:
-                self.multinames.append(_Multiname(kind))
-                for _c2 in range(MULTINAME_SIZES[kind]):
-                    u30()
-
-        # Methods
-        method_count = u30()
-        MethodInfo = collections.namedtuple(
-            'MethodInfo',
-            ['NEED_ARGUMENTS', 'NEED_REST'])
-        method_infos = []
-        for method_id in range(method_count):
-            param_count = u30()
-            u30()  # return type
-            for _ in range(param_count):
-                u30()  # param type
-            u30()  # name index (always 0 for youtube)
-            flags = read_byte()
-            if flags & 0x08 != 0:
-                # Options present
-                option_count = u30()
-                for c in range(option_count):
-                    u30()  # val
-                    read_bytes(1)  # kind
-            if flags & 0x80 != 0:
-                # Param names present
-                for _ in range(param_count):
-                    u30()  # param name
-            mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0)
-            method_infos.append(mi)
-
-        # Metadata
-        metadata_count = u30()
-        for _c in range(metadata_count):
-            u30()  # name
-            item_count = u30()
-            for _c2 in range(item_count):
-                u30()  # key
-                u30()  # value
-
-        def parse_traits_info():
-            trait_name_idx = u30()
-            kind_full = read_byte()
-            kind = kind_full & 0x0f
-            attrs = kind_full >> 4
-            methods = {}
-            constants = None
-            if kind == 0x00:  # Slot
-                u30()  # Slot id
-                u30()  # type_name_idx
-                vindex = u30()
-                if vindex != 0:
-                    read_byte()  # vkind
-            elif kind == 0x06:  # Const
-                u30()  # Slot id
-                u30()  # type_name_idx
-                vindex = u30()
-                vkind = 'any'
-                if vindex != 0:
-                    vkind = read_byte()
-                if vkind == 0x03:  # Constant_Int
-                    value = self.constant_ints[vindex]
-                elif vkind == 0x04:  # Constant_UInt
-                    value = self.constant_uints[vindex]
-                else:
-                    return {}, None  # Ignore silently for now
-                constants = {self.multinames[trait_name_idx]: value}
-            elif kind in (0x01, 0x02, 0x03):  # Method / Getter / Setter
-                u30()  # disp_id
-                method_idx = u30()
-                methods[self.multinames[trait_name_idx]] = method_idx
-            elif kind == 0x04:  # Class
-                u30()  # slot_id
-                u30()  # classi
-            elif kind == 0x05:  # Function
-                u30()  # slot_id
-                function_idx = u30()
-                methods[function_idx] = self.multinames[trait_name_idx]
-            else:
-                raise ExtractorError('Unsupported trait kind %d' % kind)
-
-            if attrs & 0x4 != 0:  # Metadata present
-                metadata_count = u30()
-                for _c3 in range(metadata_count):
-                    u30()  # metadata index
-
-            return methods, constants
-
-        # Classes
-        class_count = u30()
-        classes = []
-        for class_id in range(class_count):
-            name_idx = u30()
-
-            cname = self.multinames[name_idx]
-            avm_class = _AVMClass(name_idx, cname)
-            classes.append(avm_class)
-
-            u30()  # super_name idx
-            flags = read_byte()
-            if flags & 0x08 != 0:  # Protected namespace is present
-                u30()  # protected_ns_idx
-            intrf_count = u30()
-            for _c2 in range(intrf_count):
-                u30()
-            u30()  # iinit
-            trait_count = u30()
-            for _c2 in range(trait_count):
-                trait_methods, trait_constants = parse_traits_info()
-                avm_class.register_methods(trait_methods)
-                if trait_constants:
-                    avm_class.constants.update(trait_constants)
-
-        assert len(classes) == class_count
-        self._classes_by_name = dict((c.name, c) for c in classes)
-
-        for avm_class in classes:
-            avm_class.cinit_idx = u30()
-            trait_count = u30()
-            for _c2 in range(trait_count):
-                trait_methods, trait_constants = parse_traits_info()
-                avm_class.register_methods(trait_methods)
-                if trait_constants:
-                    avm_class.constants.update(trait_constants)
-
-        # Scripts
-        script_count = u30()
-        for _c in range(script_count):
-            u30()  # init
-            trait_count = u30()
-            for _c2 in range(trait_count):
-                parse_traits_info()
-
-        # Method bodies
-        method_body_count = u30()
-        Method = collections.namedtuple('Method', ['code', 'local_count'])
-        self._all_methods = []
-        for _c in range(method_body_count):
-            method_idx = u30()
-            u30()  # max_stack
-            local_count = u30()
-            u30()  # init_scope_depth
-            u30()  # max_scope_depth
-            code_length = u30()
-            code = read_bytes(code_length)
-            m = Method(code, local_count)
-            self._all_methods.append(m)
-            for avm_class in classes:
-                if method_idx in avm_class.method_idxs:
-                    avm_class.methods[avm_class.method_idxs[method_idx]] = m
-            exception_count = u30()
-            for _c2 in range(exception_count):
-                u30()  # from
-                u30()  # to
-                u30()  # target
-                u30()  # exc_type
-                u30()  # var_name
-            trait_count = u30()
-            for _c2 in range(trait_count):
-                parse_traits_info()
-
-        assert p + code_reader.tell() == len(code_tag)
-
-    def patch_function(self, avm_class, func_name, f):
-        self._patched_functions[(avm_class, func_name)] = f
-
-    def extract_class(self, class_name, call_cinit=True):
-        try:
-            res = self._classes_by_name[class_name]
-        except KeyError:
-            raise ExtractorError('Class %r not found' % class_name)
-
-        if call_cinit and hasattr(res, 'cinit_idx'):
-            res.register_methods({'$cinit': res.cinit_idx})
-            res.methods['$cinit'] = self._all_methods[res.cinit_idx]
-            cinit = self.extract_function(res, '$cinit')
-            cinit([])
-
-        return res
-
-    def extract_function(self, avm_class, func_name):
-        p = self._patched_functions.get((avm_class, func_name))
-        if p:
-            return p
-        if func_name in avm_class.method_pyfunctions:
-            return avm_class.method_pyfunctions[func_name]
-        if func_name in self._classes_by_name:
-            return self._classes_by_name[func_name].make_object()
-        if func_name not in avm_class.methods:
-            raise ExtractorError('Cannot find function %s.%s' % (
-                avm_class.name, func_name))
-        m = avm_class.methods[func_name]
-
-        def resfunc(args):
-            # Helper functions
-            coder = io.BytesIO(m.code)
-            s24 = lambda: _s24(coder)
-            u30 = lambda: _u30(coder)
-
-            registers = [avm_class.variables] + list(args) + [None] * m.local_count
-            stack = []
-            scopes = collections.deque([
-                self._classes_by_name, avm_class.constants, avm_class.variables])
-            while True:
-                opcode = _read_byte(coder)
-                if opcode == 9:  # label
-                    pass  # Spec says: "Do nothing."
-                elif opcode == 16:  # jump
-                    offset = s24()
-                    coder.seek(coder.tell() + offset)
-                elif opcode == 17:  # iftrue
-                    offset = s24()
-                    value = stack.pop()
-                    if value:
-                        coder.seek(coder.tell() + offset)
-                elif opcode == 18:  # iffalse
-                    offset = s24()
-                    value = stack.pop()
-                    if not value:
-                        coder.seek(coder.tell() + offset)
-                elif opcode == 19:  # ifeq
-                    offset = s24()
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    if value2 == value1:
-                        coder.seek(coder.tell() + offset)
-                elif opcode == 20:  # ifne
-                    offset = s24()
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    if value2 != value1:
-                        coder.seek(coder.tell() + offset)
-                elif opcode == 21:  # iflt
-                    offset = s24()
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    if value1 < value2:
-                        coder.seek(coder.tell() + offset)
-                elif opcode == 32:  # pushnull
-                    stack.append(None)
-                elif opcode == 33:  # pushundefined
-                    stack.append(undefined)
-                elif opcode == 36:  # pushbyte
-                    v = _read_byte(coder)
-                    stack.append(v)
-                elif opcode == 37:  # pushshort
-                    v = u30()
-                    stack.append(v)
-                elif opcode == 38:  # pushtrue
-                    stack.append(True)
-                elif opcode == 39:  # pushfalse
-                    stack.append(False)
-                elif opcode == 40:  # pushnan
-                    stack.append(float('NaN'))
-                elif opcode == 42:  # dup
-                    value = stack[-1]
-                    stack.append(value)
-                elif opcode == 44:  # pushstring
-                    idx = u30()
-                    stack.append(self.constant_strings[idx])
-                elif opcode == 48:  # pushscope
-                    new_scope = stack.pop()
-                    scopes.append(new_scope)
-                elif opcode == 66:  # construct
-                    arg_count = u30()
-                    args = list(reversed(
-                        [stack.pop() for _ in range(arg_count)]))
-                    obj = stack.pop()
-                    res = obj.avm_class.make_object()
-                    stack.append(res)
-                elif opcode == 70:  # callproperty
-                    index = u30()
-                    mname = self.multinames[index]
-                    arg_count = u30()
-                    args = list(reversed(
-                        [stack.pop() for _ in range(arg_count)]))
-                    obj = stack.pop()
-
-                    if obj == StringClass:
-                        if mname == 'String':
-                            assert len(args) == 1
-                            assert isinstance(args[0], (
-                                int, compat_str, _Undefined))
-                            if args[0] == undefined:
-                                res = 'undefined'
-                            else:
-                                res = compat_str(args[0])
-                            stack.append(res)
-                            continue
-                        else:
-                            raise NotImplementedError(
-                                'Function String.%s is not yet implemented'
-                                % mname)
-                    elif isinstance(obj, _AVMClass_Object):
-                        func = self.extract_function(obj.avm_class, mname)
-                        res = func(args)
-                        stack.append(res)
-                        continue
-                    elif isinstance(obj, _AVMClass):
-                        func = self.extract_function(obj, mname)
-                        res = func(args)
-                        stack.append(res)
-                        continue
-                    elif isinstance(obj, _ScopeDict):
-                        if mname in obj.avm_class.method_names:
-                            func = self.extract_function(obj.avm_class, mname)
-                            res = func(args)
-                        else:
-                            res = obj[mname]
-                        stack.append(res)
-                        continue
-                    elif isinstance(obj, compat_str):
-                        if mname == 'split':
-                            assert len(args) == 1
-                            assert isinstance(args[0], compat_str)
-                            if args[0] == '':
-                                res = list(obj)
-                            else:
-                                res = obj.split(args[0])
-                            stack.append(res)
-                            continue
-                        elif mname == 'charCodeAt':
-                            assert len(args) <= 1
-                            idx = 0 if len(args) == 0 else args[0]
-                            assert isinstance(idx, int)
-                            res = ord(obj[idx])
-                            stack.append(res)
-                            continue
-                    elif isinstance(obj, list):
-                        if mname == 'slice':
-                            assert len(args) == 1
-                            assert isinstance(args[0], int)
-                            res = obj[args[0]:]
-                            stack.append(res)
-                            continue
-                        elif mname == 'join':
-                            assert len(args) == 1
-                            assert isinstance(args[0], compat_str)
-                            res = args[0].join(obj)
-                            stack.append(res)
-                            continue
-                    raise NotImplementedError(
-                        'Unsupported property %r on %r'
-                        % (mname, obj))
-                elif opcode == 71:  # returnvoid
-                    res = undefined
-                    return res
-                elif opcode == 72:  # returnvalue
-                    res = stack.pop()
-                    return res
-                elif opcode == 73:  # constructsuper
-                    # Not yet implemented, just hope it works without it
-                    arg_count = u30()
-                    args = list(reversed(
-                        [stack.pop() for _ in range(arg_count)]))
-                    obj = stack.pop()
-                elif opcode == 74:  # constructproperty
-                    index = u30()
-                    arg_count = u30()
-                    args = list(reversed(
-                        [stack.pop() for _ in range(arg_count)]))
-                    obj = stack.pop()
-
-                    mname = self.multinames[index]
-                    assert isinstance(obj, _AVMClass)
-
-                    # We do not actually call the constructor for now;
-                    # we just pretend it does nothing
-                    stack.append(obj.make_object())
-                elif opcode == 79:  # callpropvoid
-                    index = u30()
-                    mname = self.multinames[index]
-                    arg_count = u30()
-                    args = list(reversed(
-                        [stack.pop() for _ in range(arg_count)]))
-                    obj = stack.pop()
-                    if isinstance(obj, _AVMClass_Object):
-                        func = self.extract_function(obj.avm_class, mname)
-                        res = func(args)
-                        assert res is undefined
-                        continue
-                    if isinstance(obj, _ScopeDict):
-                        assert mname in obj.avm_class.method_names
-                        func = self.extract_function(obj.avm_class, mname)
-                        res = func(args)
-                        assert res is undefined
-                        continue
-                    if mname == 'reverse':
-                        assert isinstance(obj, list)
-                        obj.reverse()
-                    else:
-                        raise NotImplementedError(
-                            'Unsupported (void) property %r on %r'
-                            % (mname, obj))
-                elif opcode == 86:  # newarray
-                    arg_count = u30()
-                    arr = []
-                    for i in range(arg_count):
-                        arr.append(stack.pop())
-                    arr = arr[::-1]
-                    stack.append(arr)
-                elif opcode == 93:  # findpropstrict
-                    index = u30()
-                    mname = self.multinames[index]
-                    for s in reversed(scopes):
-                        if mname in s:
-                            res = s
-                            break
-                    else:
-                        res = scopes[0]
-                    if mname not in res and mname in _builtin_classes:
-                        stack.append(_builtin_classes[mname])
-                    else:
-                        stack.append(res[mname])
-                elif opcode == 94:  # findproperty
-                    index = u30()
-                    mname = self.multinames[index]
-                    for s in reversed(scopes):
-                        if mname in s:
-                            res = s
-                            break
-                    else:
-                        res = avm_class.variables
-                    stack.append(res)
-                elif opcode == 96:  # getlex
-                    index = u30()
-                    mname = self.multinames[index]
-                    for s in reversed(scopes):
-                        if mname in s:
-                            scope = s
-                            break
-                    else:
-                        scope = avm_class.variables
-
-                    if mname in scope:
-                        res = scope[mname]
-                    elif mname in _builtin_classes:
-                        res = _builtin_classes[mname]
-                    else:
-                        # Assume uninitialized
-                        # TODO warn here
-                        res = undefined
-                    stack.append(res)
-                elif opcode == 97:  # setproperty
-                    index = u30()
-                    value = stack.pop()
-                    idx = self.multinames[index]
-                    if isinstance(idx, _Multiname):
-                        idx = stack.pop()
-                    obj = stack.pop()
-                    obj[idx] = value
-                elif opcode == 98:  # getlocal
-                    index = u30()
-                    stack.append(registers[index])
-                elif opcode == 99:  # setlocal
-                    index = u30()
-                    value = stack.pop()
-                    registers[index] = value
-                elif opcode == 102:  # getproperty
-                    index = u30()
-                    pname = self.multinames[index]
-                    if pname == 'length':
-                        obj = stack.pop()
-                        assert isinstance(obj, (compat_str, list))
-                        stack.append(len(obj))
-                    elif isinstance(pname, compat_str):  # Member access
-                        obj = stack.pop()
-                        if isinstance(obj, _AVMClass):
-                            res = obj.static_properties[pname]
-                            stack.append(res)
-                            continue
-
-                        assert isinstance(obj, (dict, _ScopeDict)),\
-                            'Accessing member %r on %r' % (pname, obj)
-                        res = obj.get(pname, undefined)
-                        stack.append(res)
-                    else:  # Assume attribute access
-                        idx = stack.pop()
-                        assert isinstance(idx, int)
-                        obj = stack.pop()
-                        assert isinstance(obj, list)
-                        stack.append(obj[idx])
-                elif opcode == 104:  # initproperty
-                    index = u30()
-                    value = stack.pop()
-                    idx = self.multinames[index]
-                    if isinstance(idx, _Multiname):
-                        idx = stack.pop()
-                    obj = stack.pop()
-                    obj[idx] = value
-                elif opcode == 115:  # convert_
-                    value = stack.pop()
-                    intvalue = int(value)
-                    stack.append(intvalue)
-                elif opcode == 128:  # coerce
-                    u30()
-                elif opcode == 130:  # coerce_a
-                    value = stack.pop()
-                    # um, yes, it's any value
-                    stack.append(value)
-                elif opcode == 133:  # coerce_s
-                    assert isinstance(stack[-1], (type(None), compat_str))
-                elif opcode == 147:  # decrement
-                    value = stack.pop()
-                    assert isinstance(value, int)
-                    stack.append(value - 1)
-                elif opcode == 149:  # typeof
-                    value = stack.pop()
-                    return {
-                        _Undefined: 'undefined',
-                        compat_str: 'String',
-                        int: 'Number',
-                        float: 'Number',
-                    }[type(value)]
-                elif opcode == 160:  # add
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    res = value1 + value2
-                    stack.append(res)
-                elif opcode == 161:  # subtract
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    res = value1 - value2
-                    stack.append(res)
-                elif opcode == 162:  # multiply
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    res = value1 * value2
-                    stack.append(res)
-                elif opcode == 164:  # modulo
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    res = value1 % value2
-                    stack.append(res)
-                elif opcode == 168:  # bitand
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    assert isinstance(value1, int)
-                    assert isinstance(value2, int)
-                    res = value1 & value2
-                    stack.append(res)
-                elif opcode == 171:  # equals
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    result = value1 == value2
-                    stack.append(result)
-                elif opcode == 175:  # greaterequals
-                    value2 = stack.pop()
-                    value1 = stack.pop()
-                    result = value1 >= value2
-                    stack.append(result)
-                elif opcode == 192:  # increment_i
-                    value = stack.pop()
-                    assert isinstance(value, int)
-                    stack.append(value + 1)
-                elif opcode == 208:  # getlocal_0
-                    stack.append(registers[0])
-                elif opcode == 209:  # getlocal_1
-                    stack.append(registers[1])
-                elif opcode == 210:  # getlocal_2
-                    stack.append(registers[2])
-                elif opcode == 211:  # getlocal_3
-                    stack.append(registers[3])
-                elif opcode == 212:  # setlocal_0
-                    registers[0] = stack.pop()
-                elif opcode == 213:  # setlocal_1
-                    registers[1] = stack.pop()
-                elif opcode == 214:  # setlocal_2
-                    registers[2] = stack.pop()
-                elif opcode == 215:  # setlocal_3
-                    registers[3] = stack.pop()
-                else:
-                    raise NotImplementedError(
-                        'Unsupported opcode %d' % opcode)
-
-        avm_class.method_pyfunctions[func_name] = resfunc
-        return resfunc