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Code Issues Releases Wiki Activity

[swfinterp] Correct array access

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This commit is contained in:
Philipp Hagemeister 2014-07-20 18:28:49 +02:00
parent 0d989011ff
commit decf2ae400
2 changed files with 38 additions and 1 deletions
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19
test/swftests/ArrayAccess.as Normal file
View File

@ -0,0 +1,19 @@
// input: [["a", "b", "c", "d"]]
// output: ["c", "b", "a", "d"]
package {
public class ArrayAccess {
public static function main(ar:Array):Array {
var aa:ArrayAccess = new ArrayAccess();
return aa.f(ar, 2);
}
private function f(ar:Array, num:Number):Array{
var x:String = ar[0];
var y:String = ar[num % ar.length];
ar[0] = y;
ar[num] = x;
return ar;
}
}
}

20
youtube_dl/swfinterp.py
View File

@ -85,6 +85,14 @@ class _AVMClass(object):
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
@ -205,7 +213,7 @@ class SWFInterpreter(object):
name_idx = u30()
self.multinames.append(self.constant_strings[name_idx])
else:
self.multinames.append('[MULTINAME kind: %d]' % kind)
self.multinames.append(_Multiname(kind))
for _c2 in range(MULTINAME_SIZES[kind]):
u30()
@ -399,6 +407,13 @@ class SWFInterpreter(object):
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]
@ -521,7 +536,10 @@ class SWFInterpreter(object):
index = u30()
value = stack.pop()
idx = self.multinames[index]
if isinstance(idx, _Multiname):
idx = stack.pop()
obj = stack.pop()
print('Setting %r.%r = %r' % (obj, idx, value))
obj[idx] = value
elif opcode == 98: # getlocal
index = u30()