79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/compiler/mlir/tfr/utils/utils.h"
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#include "llvm/ADT/StringRef.h"
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#include "mlir/Support/LLVM.h" // from @llvm-project
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namespace mlir {
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namespace TFR {
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std::string GetComposeFuncName(StringRef tf_op_name) {
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std::string compose_func_name;
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for (int i = 0; i < tf_op_name.size(); ++i) {
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if (tf_op_name[i] == '_') {
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// The field name must not contain "_"s. "_Arg" and "_RetVal" are special
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// op names and we can return empty string to skip the decomposition.
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return {};
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}
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if (tf_op_name[i] == '.') {
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compose_func_name.push_back('_');
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} else if (tf_op_name[i] >= 'A' && tf_op_name[i] <= 'Z') {
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compose_func_name.push_back('_');
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compose_func_name.push_back(tf_op_name[i] + 'a' - 'A');
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} else {
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compose_func_name.push_back(tf_op_name[i]);
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}
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}
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return compose_func_name;
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}
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std::string GetTFOpName(StringRef compose_func_name) {
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std::string tf_op_name;
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bool after_underscore = false;
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for (int i = 0; i < compose_func_name.size(); ++i) {
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if (compose_func_name[i] >= 'A' && compose_func_name[i] <= 'Z') {
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// The field name must not contain uppercase letters.
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return {};
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}
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if (after_underscore) {
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if (compose_func_name[i] >= 'a' && compose_func_name[i] <= 'z') {
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tf_op_name.push_back(compose_func_name[i] + 'A' - 'a');
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after_underscore = false;
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} else {
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// The character after a "_" must be a lowercase letter.
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return {};
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}
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} else if (compose_func_name[i] == '_') { // first time visit '_'
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if (i + 1 < compose_func_name.size() && compose_func_name[i + 1] == '_') {
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tf_op_name.push_back('.');
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i++;
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}
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after_underscore = true;
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} else {
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tf_op_name.push_back(compose_func_name[i]);
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}
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}
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if (after_underscore) {
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// Trailing "_".
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return {};
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}
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return tf_op_name;
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}
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} // namespace TFR
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} // namespace mlir
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