mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-12-23 07:37:57 +01:00
[swfinterp] Add support for calls to instance methods
This commit is contained in:
Philipp Hagemeister
parent
70f767dc65
commit
01b4b74574
17
test/swftests/ClassCall.as
Normal file
17
test/swftests/ClassCall.as
Normal file
@ -0,0 +1,17 @@
|
||||
// input: []
|
||||
// output: 121
|
||||
|
||||
package {
|
||||
public class ClassCall {
|
||||
public static function main():int{
|
||||
var f:OtherClass = new OtherClass();
|
||||
return f.func(100,20);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
class OtherClass {
|
||||
public function func(x: int, y: int):int {
|
||||
return x+y+1;
|
||||
}
|
||||
}
|
||||
@ -42,16 +42,6 @@ def _extract_tags(file_contents):
|
||||
pos += tag_len
|
||||
|
||||
|
||||
class _AVM_Object(object):
|
||||
def __init__(self, value=None, name_hint=None):
|
||||
self.value = value
|
||||
self.name_hint = name_hint
|
||||
|
||||
def __repr__(self):
|
||||
nh = '' if self.name_hint is None else (' %s' % self.name_hint)
|
||||
return 'AVMObject%s(%r)' % (nh, self.value)
|
||||
|
||||
|
||||
class _AVMClass_Object(object):
|
||||
def __init__(self, avm_class):
|
||||
self.avm_class = avm_class
|
||||
@ -74,14 +64,6 @@ class _AVMClass(object):
|
||||
super(ScopeDict, self).__init__()
|
||||
self.avm_class = avm_class
|
||||
|
||||
def __getitem__(self, k):
|
||||
print('getting %r' % k)
|
||||
return super(ScopeDict, self).__getitem__(k)
|
||||
|
||||
def __contains__(self, k):
|
||||
print('contains %r' % k)
|
||||
return super(ScopeDict, self).__contains__(k)
|
||||
|
||||
def __repr__(self):
|
||||
return '%s__Scope(%s)' % (
|
||||
self.avm_class.name,
|
||||
@ -92,6 +74,15 @@ class _AVMClass(object):
|
||||
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()))
|
||||
|
||||
|
||||
def _read_int(reader):
|
||||
res = 0
|
||||
@ -290,7 +281,11 @@ class SWFInterpreter(object):
|
||||
classes = []
|
||||
for class_id in range(class_count):
|
||||
name_idx = u30()
|
||||
classes.append(_AVMClass(name_idx, self.multinames[name_idx]))
|
||||
|
||||
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
|
||||
@ -301,7 +296,9 @@ class SWFInterpreter(object):
|
||||
u30() # iinit
|
||||
trait_count = u30()
|
||||
for _c2 in range(trait_count):
|
||||
parse_traits_info()
|
||||
trait_methods = parse_traits_info()
|
||||
avm_class.register_methods(trait_methods)
|
||||
|
||||
assert len(classes) == class_count
|
||||
self._classes_by_name = dict((c.name, c) for c in classes)
|
||||
|
||||
@ -310,10 +307,7 @@ class SWFInterpreter(object):
|
||||
trait_count = u30()
|
||||
for _c2 in range(trait_count):
|
||||
trait_methods = parse_traits_info()
|
||||
avm_class.method_names.update(trait_methods.items())
|
||||
avm_class.method_idxs.update(dict(
|
||||
(idx, name)
|
||||
for name, idx in trait_methods.items()))
|
||||
avm_class.register_methods(trait_methods)
|
||||
|
||||
# Scripts
|
||||
script_count = u30()
|
||||
@ -358,12 +352,14 @@ class SWFInterpreter(object):
|
||||
raise ExtractorError('Class %r not found' % class_name)
|
||||
|
||||
def extract_function(self, avm_class, func_name):
|
||||
print('Extracting %s.%s' % (avm_class.name, func_name))
|
||||
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 %r' % func_name)
|
||||
raise ExtractorError('Cannot find function %s.%s' % (
|
||||
avm_class.name, func_name))
|
||||
m = avm_class.methods[func_name]
|
||||
|
||||
def resfunc(args):
|
||||
@ -375,7 +371,8 @@ class SWFInterpreter(object):
|
||||
print('Invoking %s.%s(%r)' % (avm_class.name, func_name, tuple(args)))
|
||||
registers = [avm_class.variables] + list(args) + [None] * m.local_count
|
||||
stack = []
|
||||
scopes = collections.deque([avm_class.variables])
|
||||
scopes = collections.deque([
|
||||
self._classes_by_name, avm_class.variables])
|
||||
while True:
|
||||
opcode = _read_byte(coder)
|
||||
print('opcode: %r, stack(%d): %r' % (opcode, len(stack), stack))
|
||||
@ -408,33 +405,38 @@ class SWFInterpreter(object):
|
||||
args = list(reversed(
|
||||
[stack.pop() for _ in range(arg_count)]))
|
||||
obj = stack.pop()
|
||||
if mname == 'split':
|
||||
assert len(args) == 1
|
||||
assert isinstance(args[0], compat_str)
|
||||
assert isinstance(obj, compat_str)
|
||||
if args[0] == '':
|
||||
res = list(obj)
|
||||
else:
|
||||
res = obj.split(args[0])
|
||||
|
||||
if isinstance(obj, _AVMClass_Object):
|
||||
func = self.extract_function(obj.avm_class, mname)
|
||||
res = func(args)
|
||||
stack.append(res)
|
||||
elif mname == 'slice':
|
||||
assert len(args) == 1
|
||||
assert isinstance(args[0], int)
|
||||
assert isinstance(obj, list)
|
||||
res = obj[args[0]:]
|
||||
stack.append(res)
|
||||
elif mname == 'join':
|
||||
assert len(args) == 1
|
||||
assert isinstance(args[0], compat_str)
|
||||
assert isinstance(obj, list)
|
||||
res = args[0].join(obj)
|
||||
stack.append(res)
|
||||
elif mname in avm_class.method_pyfunctions:
|
||||
stack.append(avm_class.method_pyfunctions[mname](args))
|
||||
else:
|
||||
raise NotImplementedError(
|
||||
'Unsupported property %r on %r'
|
||||
% (mname, obj))
|
||||
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 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 == 72: # returnvalue
|
||||
res = stack.pop()
|
||||
return res
|
||||
@ -446,11 +448,12 @@ class SWFInterpreter(object):
|
||||
obj = stack.pop()
|
||||
|
||||
mname = self.multinames[index]
|
||||
assert isinstance(obj, _AVMClass)
|
||||
construct_method = self.extract_function(
|
||||
obj.avm_class, mname)
|
||||
obj, mname)
|
||||
# We do not actually call the constructor for now;
|
||||
# we just pretend it does nothing
|
||||
stack.append(obj)
|
||||
stack.append(obj.make_object())
|
||||
elif opcode == 79: # callpropvoid
|
||||
index = u30()
|
||||
mname = self.multinames[index]
|
||||
@ -481,7 +484,7 @@ class SWFInterpreter(object):
|
||||
break
|
||||
else:
|
||||
res = scopes[0]
|
||||
stack.append(res)
|
||||
stack.append(res[mname])
|
||||
elif opcode == 94: # findproperty
|
||||
index = u30()
|
||||
mname = self.multinames[index]
|
||||
@ -490,7 +493,7 @@ class SWFInterpreter(object):
|
||||
res = s
|
||||
break
|
||||
else:
|
||||
res = scopes[0]
|
||||
res = avm_class.variables
|
||||
stack.append(res)
|
||||
elif opcode == 96: # getlex
|
||||
index = u30()
|
||||
@ -500,7 +503,7 @@ class SWFInterpreter(object):
|
||||
scope = s
|
||||
break
|
||||
else:
|
||||
scope = scopes[0]
|
||||
scope = avm_class.variables
|
||||
# I cannot find where static variables are initialized
|
||||
# so let's just return None
|
||||
res = scope.get(mname)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user