js/src/gdb/mozilla/jsid.py@129ffea94266
js/src/gdb/mozilla/jsid.py
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 # Pretty-printers for JSID values.
3 import gdb
4 import mozilla.prettyprinters
5 import mozilla.Root
7 from mozilla.prettyprinters import pretty_printer
9 # Forget any printers from previous loads of this module.
10 mozilla.prettyprinters.clear_module_printers(__name__)
12 @pretty_printer('jsid')
13 class jsid(object):
14 # Since people don't always build with macro debugging info, I can't
15 # think of any way to avoid copying these values here, short of using
16 # inferior calls for every operation (which, I hear, is broken from
17 # pretty-printers in some recent GDBs).
18 TYPE_STRING = 0x0
19 TYPE_INT = 0x1
20 TYPE_VOID = 0x2
21 TYPE_OBJECT = 0x4
22 TYPE_MASK = 0x7
24 def __init__(self, value, cache):
25 self.value = value
26 self.cache = cache
27 self.concrete_type = self.value.type.strip_typedefs()
29 # SpiderMonkey has two alternative definitions of jsid: a typedef for
30 # ptrdiff_t, and a struct with == and != operators defined on it.
31 # Extract the bits from either one.
32 def as_bits(self):
33 if self.concrete_type.code == gdb.TYPE_CODE_STRUCT:
34 return self.value['asBits']
35 elif self.concrete_type.code == gdb.TYPE_CODE_INT:
36 return self.value
37 else:
38 raise RuntimeError, ("definition of SpiderMonkey 'jsid' type"
39 "neither struct nor integral type")
41 def to_string(self):
42 bits = self.as_bits()
43 tag = bits & jsid.TYPE_MASK
44 if tag == jsid.TYPE_STRING:
45 body = bits.cast(self.cache.JSString_ptr_t)
46 elif tag & jsid.TYPE_INT:
47 body = bits >> 1
48 elif tag == jsid.TYPE_VOID:
49 return "JSID_VOID"
50 elif tag == jsid.TYPE_OBJECT:
51 body = ((bits & ~jsid.TYPE_MASK)
52 .cast(self.cache.JSObject_ptr_t))
53 else:
54 body = "<unrecognized>"
55 return '$jsid(%s)' % (body,)
57 # Hard-code the referent type pretty-printer for jsid roots and handles.
58 # See the comment for mozilla.Root.Common.__init__.
59 @pretty_printer('JS::Rooted<long>')
60 def RootedJSID(value, cache):
61 return mozilla.Root.Rooted(value, cache, jsid)
62 @pretty_printer('JS::Handle<long>')
63 def HandleJSID(value, cache):
64 return mozilla.Root.Handle(value, cache, jsid)
65 @pretty_printer('JS::MutableHandle<long>')
66 def MutableHandleJSID(value, cache):
67 return mozilla.Root.MutableHandle(value, cache, jsid)
