[swfinterp] Add more builtins and improve static variables
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1921b24551
commit
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2 changed files with 49 additions and 8 deletions
18
test/swftests/ConstArrayAccess.as
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18
test/swftests/ConstArrayAccess.as
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@ -0,0 +1,18 @@
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// input: []
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// output: 4
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package {
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public class ConstArrayAccess {
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private static const x:int = 2;
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private static const ar:Array = ["42", "3411"];
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public static function main():int{
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var c:ConstArrayAccess = new ConstArrayAccess();
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return c.f();
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}
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public function f(): int {
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return ar[1].length;
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}
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}
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}
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@ -62,13 +62,14 @@ class _ScopeDict(dict):
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class _AVMClass(object):
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def __init__(self, name_idx, name):
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def __init__(self, name_idx, name, static_properties=None):
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self.name_idx = name_idx
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self.name = name
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self.method_names = {}
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self.method_idxs = {}
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self.methods = {}
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self.method_pyfunctions = {}
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self.static_properties = static_properties if static_properties else {}
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self.variables = _ScopeDict(self)
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self.constants = {}
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@ -151,15 +152,20 @@ def _read_byte(reader):
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StringClass = _AVMClass('(no name idx)', 'String')
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ByteArrayClass = _AVMClass('(no name idx)', 'ByteArray')
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TimerClass = _AVMClass('(no name idx)', 'Timer')
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TimerEventClass = _AVMClass('(no name idx)', 'TimerEvent', {'TIMER': 'timer'})
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_builtin_classes = {
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StringClass.name: StringClass,
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ByteArrayClass.name: ByteArrayClass,
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TimerClass.name: TimerClass,
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TimerEventClass.name: TimerEventClass,
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}
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class _Undefined(object):
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def __boolean__(self):
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def __bool__(self):
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return False
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__nonzero__ = __bool__
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def __hash__(self):
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return 0
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@ -169,7 +175,9 @@ undefined = _Undefined()
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class SWFInterpreter(object):
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def __init__(self, file_contents):
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self._patched_functions = {}
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self._patched_functions = {
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(TimerClass, 'addEventListener'): lambda params: undefined,
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}
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code_tag = next(tag
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for tag_code, tag in _extract_tags(file_contents)
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if tag_code == 82)
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@ -346,9 +354,10 @@ class SWFInterpreter(object):
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u30() # iinit
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trait_count = u30()
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for _c2 in range(trait_count):
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trait_methods, constants = parse_traits_info()
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trait_methods, trait_constants = parse_traits_info()
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avm_class.register_methods(trait_methods)
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assert constants is None
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if trait_constants:
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avm_class.constants.update(trait_constants)
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assert len(classes) == class_count
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self._classes_by_name = dict((c.name, c) for c in classes)
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@ -439,7 +448,7 @@ class SWFInterpreter(object):
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registers = [avm_class.variables] + list(args) + [None] * m.local_count
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stack = []
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scopes = collections.deque([
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self._classes_by_name, avm_class.variables])
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self._classes_by_name, avm_class.constants, avm_class.variables])
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while True:
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opcode = _read_byte(coder)
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if opcode == 9: # label
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@ -587,6 +596,12 @@ class SWFInterpreter(object):
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elif opcode == 72: # returnvalue
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res = stack.pop()
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return res
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elif opcode == 73: # constructsuper
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# Not yet implemented, just hope it works without it
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arg_count = u30()
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args = list(reversed(
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[stack.pop() for _ in range(arg_count)]))
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obj = stack.pop()
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elif opcode == 74: # constructproperty
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index = u30()
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arg_count = u30()
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@ -667,8 +682,11 @@ class SWFInterpreter(object):
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if mname in scope:
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res = scope[mname]
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elif mname in _builtin_classes:
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res = _builtin_classes[mname]
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else:
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res = avm_class.constants[mname]
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# Assume unitialized
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res = undefined
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stack.append(res)
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elif opcode == 97: # setproperty
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index = u30()
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@ -694,7 +712,12 @@ class SWFInterpreter(object):
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stack.append(len(obj))
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elif isinstance(pname, compat_str): # Member access
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obj = stack.pop()
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assert isinstance(obj, (dict, _ScopeDict)), \
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if isinstance(obj, _AVMClass):
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res = obj.static_properties[pname]
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stack.append(res)
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continue
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assert isinstance(obj, (dict, _ScopeDict)),\
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'Accessing member %r on %r' % (pname, obj)
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res = obj.get(pname, undefined)
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stack.append(res)
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