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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/core/graph/node_builder.h"
#include <vector>
#include "tensorflow/core/framework/node_def_util.h"
#include "tensorflow/core/framework/versions.pb.h"
#include "tensorflow/core/lib/core/errors.h"
namespace tensorflow {
NodeBuilder::NodeOut::NodeOut(Node* n, int32 i) // NOLINT(runtime/explicit)
: node(n),
error(false),
name(node != nullptr ? node->name() : (error = true, "")),
index(i),
dt(SafeGetOutput(node, i, &error)) {}
NodeBuilder::NodeOut::NodeOut(StringPiece n, int32 i, DataType t)
: node(nullptr), error(false), name(n), index(i), dt(t) {}
NodeBuilder::NodeOut::NodeOut()
: node(nullptr), error(true), index(0), dt(DT_FLOAT) {}
NodeBuilder::NodeBuilder(StringPiece name, StringPiece op_name,
const OpRegistryInterface* op_registry)
: def_builder_(name, op_name, op_registry) {}
NodeBuilder::NodeBuilder(StringPiece name, const OpDef* op_def)
: def_builder_(name, op_def) {}
NodeBuilder::NodeBuilder(const NodeDefBuilder& def_builder)
: def_builder_(def_builder) {}
NodeBuilder& NodeBuilder::Input(Node* src_node, int src_index) {
inputs_.emplace_back(src_node, src_index);
DataType dt;
if (GetOutputType(src_node, src_index, &dt)) {
def_builder_.Input(src_node->name(), src_index, dt);
}
return *this;
}
NodeBuilder& NodeBuilder::Input(NodeOut src) {
if (src.error) {
AddIndexError(src.node, src.index);
} else {
inputs_.emplace_back(src.node, src.index);
def_builder_.Input(src.name, src.index, src.dt);
}
return *this;
}
NodeBuilder& NodeBuilder::Input(gtl::ArraySlice<NodeOut> src_list) {
std::vector<NodeDefBuilder::NodeOut> srcs;
srcs.reserve(src_list.size());
for (const auto& node_out : src_list) {
if (node_out.error) {
AddIndexError(node_out.node, node_out.index);
} else {
srcs.emplace_back(node_out.name, node_out.index, node_out.dt);
inputs_.emplace_back(node_out.node, node_out.index);
}
}
def_builder_.Input(gtl::ArraySlice<NodeDefBuilder::NodeOut>(srcs));
return *this;
}
NodeBuilder& NodeBuilder::ControlInput(Node* src_node) {
control_inputs_.emplace_back(src_node);
def_builder_.ControlInput(src_node->name());
return *this;
}
NodeBuilder& NodeBuilder::ControlInputs(gtl::ArraySlice<Node*> src_nodes) {
control_inputs_.insert(control_inputs_.end(), src_nodes.begin(),
src_nodes.end());
for (const Node* src_node : src_nodes) {
def_builder_.ControlInput(src_node->name());
}
return *this;
}
NodeBuilder& NodeBuilder::Device(StringPiece device_spec) {
def_builder_.Device(device_spec);
return *this;
}
NodeBuilder& NodeBuilder::AssignedDevice(StringPiece device) {
assigned_device_ = string(device);
return *this;
}
Status NodeBuilder::Finalize(Graph* graph, Node** created_node) const {
// In case of error, set *created_node to nullptr.
if (created_node != nullptr) *created_node = nullptr;
if (!errors_.empty()) {
return errors::InvalidArgument(str_util::Join(errors_, "\n"));
}
NodeDef node_def;
TF_RETURN_IF_ERROR(def_builder_.Finalize(&node_def));
TF_RETURN_IF_ERROR(ValidateNodeDef(node_def, def_builder_.op_def()));
TF_RETURN_IF_ERROR(
CheckOpDeprecation(def_builder_.op_def(), graph->versions().producer()));
Status status;
Node* node = graph->AddNode(node_def, &status);
if (!status.ok()) return status;
node->set_assigned_device_name(assigned_device_);
for (size_t i = 0; i < inputs_.size(); ++i) {
if (inputs_[i].node != nullptr) { // Skip back edges.
graph->AddEdge(inputs_[i].node, inputs_[i].index, node, i);
}
}
for (Node* control_input : control_inputs_) {
graph->AddControlEdge(control_input, node);
}
if (created_node != nullptr) *created_node = node;
return Status::OK();
}
void NodeBuilder::AddIndexError(const Node* node, int i) {
if (node == nullptr) {
errors_.emplace_back(
strings::StrCat("Attempt to add nullptr Node to node with type ",
def_builder_.op_def().name()));
} else {
errors_.emplace_back(strings::StrCat(
"Attempt to add output ", i, " of ", node->name(), " not in range [0, ",
node->num_outputs(), ") to node with type ",
def_builder_.op_def().name(), ". Node: ", node->DebugString()));
}
}
bool NodeBuilder::GetOutputType(const Node* node, int i, DataType* dt) {
bool error;
*dt = SafeGetOutput(node, i, &error);
if (error) AddIndexError(node, i);
return !error;
}
} // namespace tensorflow
|
