def _readClassRO(machO, cls, protoRefsMap, absfileoff):
"""Peek a ``class_ro_t`` at *absfileoff*. If *cls* is ``None``, read the
class as normal class. Otherwise, read as meta class and insert the class
methods.
"""
# typedef struct class_ro_t {
# uint32_t flags;
# uint32_t instanceStart;
# uint32_t instanceSize;
# #ifdef __LP64__
# uint32_t reserved;
# #endif
#
# const uint8_t * ivarLayout;
#
# const char * name;
# const method_list_t * baseMethods;
# const protocol_list_t * baseProtocols;
# const ivar_list_t * ivars;
#
# const uint8_t * weakIvarLayout;
# const struct objc_property_list *baseProperties;
# } class_ro_t;
(flags, _, _, _, namePtr, methodsPtr, protosPtr, ivarsPtr, _, propsPtr) = peekStruct(machO.file, machO.makeStruct('3L~7^'), position=absfileoff)
methods = readMethodListAt(machO, methodsPtr, optional=False)
if cls is None:
# not meta class.
name = machO.derefString(namePtr)
cls = Class(name, flags)
cls.addMethods(methods)
cls.addIvars(readIvarListAt(machO, ivarsPtr))
cls.addProperties(readPropertyListAt(machO, propsPtr))
protocolRefs = _readProtocolRefListAt(machO, protosPtr)
connectProtocol(cls, protocolRefs, protoRefsMap)
else:
# is meta-class: prepend the class methods.
cls.addClassMethods(methods)
return cls
def analyzeClass(machO, classTuple, protoRefsMap):
"""Analyze an ``old_class`` structure.
Returns the :class:`~objc.class_.Class` and the pointer to the super class.
"""
# struct old_class {
# struct old_class *isa;
# struct old_class *super_class;
# const char *name;
# long version;
# long info;
# long instance_size;
# struct old_ivar_list *ivars;
# struct old_method_list **methodLists;
# Cache cache;
# struct old_protocol_list *protocols;
# // CLS_EXT only
# const char *ivar_layout;
# struct old_class_ext *ext;
# };
(metaClsPtr, superClsPtr, namePtr, _, _, _, ivarListPtr, methodListsPtr, _, protoListPtr, _, classExtPtr) = classTuple
ms = machO.makeStruct
deref = machO.deref
name = machO.derefString(namePtr)
cls = Class(name)
cls.addIvars(readIvarList(machO, ivarListPtr))
cls.addMethods(readLists(machO, methodListsPtr, readMethodList))
if protoListPtr:
protoAddrs = list(_readProtocolRefListsAt(machO, [protoListPtr]))
connectProtocol(cls, protoAddrs, protoRefsMap)
if classExtPtr:
# struct old_class_ext {
# uint32_t size;
# const char *weak_ivar_layout;
# struct objc_property_list **propertyLists;
# };
propListsPtr = deref(classExtPtr, ms('L~2^'))[2]
cls.addProperties(readPropertyList(machO, propListsPtr))
metaClsTuple = deref(metaClsPtr, ms('12^'))
cls.addClassMethods(readLists(machO, metaClsTuple[7], readMethodList))
return (cls, superClsPtr)
def _readClassRO(machO, cls, protoRefsMap, absfileoff):
"""Peek a ``class_ro_t`` at *absfileoff*. If *cls* is ``None``, read the
class as normal class. Otherwise, read as meta class and insert the class
methods.
"""
# typedef struct class_ro_t {
# uint32_t flags;
# uint32_t instanceStart;
# uint32_t instanceSize;
# #ifdef __LP64__
# uint32_t reserved;
# #endif
#
# const uint8_t * ivarLayout;
#
# const char * name;
# const method_list_t * baseMethods;
# const protocol_list_t * baseProtocols;
# const ivar_list_t * ivars;
#
# const uint8_t * weakIvarLayout;
# const struct objc_property_list *baseProperties;
# } class_ro_t;
(flags, _, _, _, namePtr, methodsPtr, protosPtr, ivarsPtr, _, propsPtr) = peekStruct(machO.file, machO.makeStruct('3L~7^'), position=absfileoff)
methods = readMethodListAt(machO, methodsPtr, optional=False)
if cls is None:
# not meta class.
name = machO.derefString(namePtr)
cls = Class(name, flags)
cls.addMethods(methods)
cls.addIvars(readIvarListAt(machO, ivarsPtr))
cls.addProperties(readPropertyListAt(machO, propsPtr))
protocolRefs = _readProtocolRefListAt(machO, protosPtr)
connectProtocol(cls, protocolRefs, protoRefsMap)
else:
# is meta-class: prepend the class methods.
cls.addClassMethods(methods)
return cls
