o e6@sdZddlmZddlmZddlmZddlmZddlm Z ddl m Z dd Z d d Zd d ZddZddZddZdS)z6Utilities for extracting and writing checkpoint info`.)trackable_object_graph_pb2)resource_variable_ops) variables)trackable_utils) optimizer)object_identityc Cs t|}t}|D]}t|tjsdt|vr|}|D]n}t|D]g\}} z| | |} Wn t t fy=d} Ynw| durCq$| | rOtd| |vr[td| dtj|| |||d} | || <t|} | || <|| tjjj||| d} ||g| q$qq |S)zGather and name slot variables.get_slot_namesNzCurrently only variables with no dependencies can be saved as slot variables. File a feature request if this limitation bothers you.zCA slot variable was re-used as a dependency of a Trackable object: zW. This is not currently allowed. File a feature request if this limitation bothers you.)Z variable_pathZoptimizer_path slot_name)r original_variable_node_idslot_variable_node_id)listrObjectIdentityDictionary isinstance optimizer_v1Z Optimizerdirr enumerateZget_slotAttributeErrorKeyErrorZ_maybe_initialize_trackableZ_trackable_childrenNotImplementedErrorrZslot_variable_keylenappendrZTrackableObjectGraphZTrackableObjectZSlotVariableReference setdefault)trackable_objectsnode_ids object_namesZnon_slot_objectsslot_variables trackableZ slot_namesr r Zoriginal_variableZ slot_variableZcheckpoint_namer Zslot_variable_protorQD:\Projects\ConvertPro\env\Lib\site-packages\tensorflow/python/checkpoint/util.pyserialize_slot_variabless`    #rcCs|dur|S|||S)zFReturns the mapped trackable if possible, otherwise returns trackable.N)get)rZ object_maprrrget_mapped_trackableKs r!cCs8t|tjs t|s dSt|dddur|jjS|jS)zFGets the full name of variable for name-based checkpoint compatiblity._save_slice_infoN) rrVariablerZis_resource_variablegetattrr#Z full_nameZ _shared_name)varrrr get_full_nameSs r'c Csi}t}t}t|jD]-\}}|js|js|dr"|||j D]}|j }||vr3t||<|||q%qt}| ||ri| }||vrOqD| |} | | | D] } | |vrf|| q[|sFt|jD] \}}t ||v|j_qndS)zDetermines which objects have checkpoint values and save this to the proto. Args: object_graph_proto: A `TrackableObjectGraph` proto. Zregistered_saverN)rZObjectIdentitySetsetrnodes attributesrZHasFieldaddchildrennode_idupdatepopboolZhas_checkpoint_valuesvalue) Zobject_graph_protoparentsZcheckpointed_trackablesr-Z object_protoZ child_protochildZto_visitrZcurrent_parentsparentrrradd_checkpoint_values_checkcs@           r5c Csr|\}}t}|D] \}}t|||<qt}t|D]\}}|||<q"t|||d} |||| |fS)aTraverse the object graph and list all accessible objects. Looks for `Trackable` objects which are dependencies of `root_trackable`. Includes slot variables only if the variable they are slotting for and the optimizer are dependencies of `root_trackable` (i.e. if they would be saved with a checkpoint). Args: graph_view: A GraphView object. Returns: A tuple of (trackable objects, paths from root for each object, object -> node id, slot variables, object_names) )rrr)Zbreadth_first_traversalrr itemsrZobject_path_to_stringrr) graph_viewrZ node_pathsrobjpathrr-noderrrr(objects_ids_and_slot_variables_and_pathss  r;cCst|d}|S)z:Traverse the object graph and list all accessible objects.r)r;)r7rrrr list_objectss r<N)__doc__Ztensorflow.core.protobufrZtensorflow.python.opsrrZtensorflow.python.trackablerZtensorflow.python.trainingrrZtensorflow.python.utilrrr!r'r5r;r<rrrrs      2-