# Pretty-printers for SpiderMonkey JSObjects.
import gdb
import mozilla.JSString
import mozilla.prettyprinters as prettyprinters
from mozilla.prettyprinters import ptr_pretty_printer, ref_pretty_printer
from mozilla.Root import deref
prettyprinters.clear_module_printers(__name__)
class JSObjectTypeCache(object):
def __init__(self, value, cache):
# In GDB 7.4.50, with some programs, this first dummy gdb.lookup_type
# call is required to make the second lookup_type call succeed. A GDB
# built from the public sources as of 2012-12-12 did not require the
# dummy lookup.
gdb.lookup_type('js::BaseShape')
baseshape_flags = gdb.lookup_type('js::BaseShape::Flag')
self.flag_DELEGATE = prettyprinters.enum_value(
baseshape_flags, 'js::BaseShape::DELEGATE')
self.func_ptr_type = gdb.lookup_type('JSFunction').pointer()
# There should be no need to register this for JSFunction as well, since we
# search for pretty-printers under the names of base classes, and
# JSFunction has JSObject as a base class.
@ptr_pretty_printer('JSObject')
class JSObjectPtrOrRef(prettyprinters.Pointer):
# Pretty-printers for SpiderMonkey JSObjects.
import gdb
import mozilla.JSString
import mozilla.prettyprinters as prettyprinters
from mozilla.prettyprinters import ptr_pretty_printer, ref_pretty_printer
from mozilla.Root import deref
prettyprinters.clear_module_printers(__name__)
class JSObjectTypeCache(object):
def __init__(self, value, cache):
# In GDB 7.4.50, with some programs, this first dummy gdb.lookup_type
# call is required to make the second lookup_type call succeed. A GDB
# built from the public sources as of 2012-12-12 did not require the
# dummy lookup.
gdb.lookup_type('js::BaseShape')
baseshape_flags = gdb.lookup_type('js::BaseShape::Flag')
self.flag_DELEGATE = prettyprinters.enum_value(baseshape_flags, 'js::BaseShape::DELEGATE')
self.func_ptr_type = gdb.lookup_type('JSFunction').pointer()
# There should be no need to register this for JSFunction as well, since we
# search for pretty-printers under the names of base classes, and
# JSFunction has JSObject as a base class.
@ptr_pretty_printer('JSObject')
class JSObjectPtrOrRef(prettyprinters.Pointer):
def __init__(self, value, cache):
super(JSObjectPtrOrRef, self).__init__(value, cache)
if not cache.mod_JSObject:
cache.mod_JSObject = JSObjectTypeCache(value, cache)
