1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
# Pretty-printers for JSID values.
import mozilla.prettyprinters
import mozilla.Root
from mozilla.prettyprinters import pretty_printer
# Forget any printers from previous loads of this module.
mozilla.prettyprinters.clear_module_printers(__name__)
@pretty_printer("JS::PropertyKey")
class PropertyKey(object):
# Since people don't always build with macro debugging info, I can't
# think of any way to avoid copying these values here, short of using
# inferior calls for every operation (which, I hear, is broken from
# pretty-printers in some recent GDBs).
TYPE_STRING = 0x0
TYPE_INT = 0x1
TYPE_VOID = 0x2
TYPE_SYMBOL = 0x4
TYPE_EMPTY = 0x6
TYPE_MASK = 0x7
def __init__(self, value, cache):
self.value = value
self.cache = cache
self.concrete_type = self.value.type.strip_typedefs()
def to_string(self):
bits = self.value["asBits"]
tag = bits & PropertyKey.TYPE_MASK
if tag == PropertyKey.TYPE_STRING:
body = bits.cast(self.cache.JSString_ptr_t)
elif tag & PropertyKey.TYPE_INT:
body = bits >> 1
elif tag == PropertyKey.TYPE_VOID:
return "JSID_VOID"
elif tag == PropertyKey.TYPE_SYMBOL:
body = (bits & ~PropertyKey.TYPE_MASK).cast(self.cache.JSSymbol_ptr_t)
elif tag == PropertyKey.TYPE_EMPTY:
return "JSID_EMPTY"
else:
body = "<unrecognized>"
return "$jsid(%s)" % (body,)
@pretty_printer("JS::Rooted<long>")
def RootedPropertyKey(value, cache):
# Hard-code the referent type pretty-printer for PropertyKey roots and
# handles. See the comment for mozilla.Root.Common.__init__.
return mozilla.Root.Rooted(value, cache, PropertyKey)
@pretty_printer("JS::Handle<long>")
def HandlePropertyKey(value, cache):
return mozilla.Root.Handle(value, cache, PropertyKey)
@pretty_printer("JS::MutableHandle<long>")
def MutableHandlePropertyKey(value, cache):
return mozilla.Root.MutableHandle(value, cache, PropertyKey)
|
