def register_once_per_class(self):
"""
Register code-generation information to the target context.
The registration is executed once per (class, targetcontext)
"""
registry = imputils.Registry()
if (type(self), self.targetctx) not in self.registered_targetctx:
self.implement_constructor(registry)
self.implement_attribute(registry)
self.targetctx.insert_func_defn(registry.functions)
self.targetctx.insert_attr_defn(registry.attributes)
self.registered_targetctx[type(self), self.targetctx] = registry
class ClassBuilder(object):
"""
A jitclass builder for a mutable jitclass. This will register
typing and implementation hooks to the given typing and target contexts.
"""
class_impl_registry = imputils.Registry()
implemented_methods = set()
def __init__(self, class_type, methods, typingctx, targetctx):
self.class_type = class_type
self.methods = methods
self.typingctx = typingctx
self.targetctx = targetctx
def register(self):
"""
Register to the frontend and backend.
"""
# Register generic implementations for all jitclasses
self._register_methods(self.class_impl_registry,
self.class_type.instance_type)
# NOTE other registrations are done at the top-level
# (see ctor_impl and attr_impl below)
self.targetctx.install_registry(self.class_impl_registry)
def _register_methods(self, registry, instance_type):
"""
Register method implementations for the given instance type.
"""
for meth in instance_type.jitmethods:
# There's no way to retrive the particular method name
# inside the implementation function, so we have to register a
# specific closure for each different name
if meth not in self.implemented_methods:
self._implement_method(registry, meth)
self.implemented_methods.add(meth)
def _implement_method(self, registry, attr):
@registry.lower((types.ClassInstanceType, attr),
types.ClassInstanceType, types.VarArg(types.Any))
def imp(context, builder, sig, args):
instance_type = sig.args[0]
method = instance_type.jitmethods[attr]
disp_type = types.Dispatcher(method)
call = context.get_function(disp_type, sig)
out = call(builder, args)
_add_linking_libs(context, call)
return imputils.impl_ret_new_ref(context, builder,
sig.return_type, out)
def implement_backend(self, instance_type):
registry = imputils.Registry()
self.register_methods(registry, instance_type)
self.targetctx.insert_func_defn(registry.functions)
self.targetctx.insert_attr_defn(registry.attributes)
class ClassBuilder(object):
"""
A jitclass builder for a mutable jitclass. This will register
typing and implementation hooks to the given typing and target contexts.
"""
class_impl_registry = imputils.Registry()
implemented_methods = set()
def __init__(self, class_type, methods, typingctx, targetctx):
self.class_type = class_type
self.methods = methods
self.typingctx = typingctx
self.targetctx = targetctx
def register(self):
"""
Register to the frontend and backend.
"""
# Register generic implementations for all jitclasses
self._register_methods(self.class_impl_registry,
self.class_type.instance_type)
# NOTE other registrations are done at the top-level
# (see ctor_impl and attr_impl below)
self.targetctx.install_registry(self.class_impl_registry)
def _register_methods(self, registry, instance_type):
"""
Register method implementations for the given instance type.
"""
for meth in instance_type.jitmethods:
# There's no way to retrive the particular method name
# inside the implementation function, so we have to register a
# specific closure for each different name
if meth not in self.implemented_methods:
self._implement_method(registry, meth)
self.implemented_methods.add(meth)
def _implement_method(self, registry, attr):
# create a separate instance of imp method to avoid closure clashing
def get_imp():
def imp(context, builder, sig, args):
instance_type = sig.args[0]
method = instance_type.jitmethods[attr]
disp_type = types.Dispatcher(method)
call = context.get_function(disp_type, sig)
out = call(builder, args)
_add_linking_libs(context, call)
return imputils.impl_ret_new_ref(context, builder,
sig.return_type, out)
return imp
def _getsetitem_gen(getset):
_dunder_meth = "__%s__" % getset
op = getattr(operator, getset)
@templates.infer_global(op)
class GetSetItem(templates.AbstractTemplate):
def generic(self, args, kws):
instance = args[0]
if isinstance(instance, types.ClassInstanceType) and \
_dunder_meth in instance.jitmethods:
meth = instance.jitmethods[_dunder_meth]
disp_type = types.Dispatcher(meth)
sig = disp_type.get_call_type(self.context, args, kws)
return sig
# lower both {g,s}etitem and __{g,s}etitem__ to catch the calls
# from python and numba
imputils.lower_builtin((types.ClassInstanceType, _dunder_meth),
types.ClassInstanceType,
types.VarArg(types.Any))(get_imp())
imputils.lower_builtin(op, types.ClassInstanceType,
types.VarArg(types.Any))(get_imp())
dunder_stripped = attr.strip('_')
if dunder_stripped in ("getitem", "setitem"):
_getsetitem_gen(dunder_stripped)
else:
registry.lower(
(types.ClassInstanceType, attr), types.ClassInstanceType,
types.VarArg(types.Any))(get_imp())