55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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#ifndef LIBTEXTCLASSIFIER_UTIL_GTL_STL_UTIL_H_
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#define LIBTEXTCLASSIFIER_UTIL_GTL_STL_UTIL_H_
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namespace libtextclassifier {
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// Deletes all the elements in an STL container and clears the container. This
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// function is suitable for use with a vector, set, hash_set, or any other STL
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// container which defines sensible begin(), end(), and clear() methods.
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// If container is NULL, this function is a no-op.
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template <typename T>
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void STLDeleteElements(T *container) {
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if (!container) return;
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auto it = container->begin();
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while (it != container->end()) {
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auto temp = it;
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++it;
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delete *temp;
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}
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container->clear();
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}
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// Given an STL container consisting of (key, value) pairs, STLDeleteValues
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// deletes all the "value" components and clears the container. Does nothing in
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// the case it's given a nullptr.
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template <typename T>
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void STLDeleteValues(T *container) {
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if (!container) return;
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auto it = container->begin();
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while (it != container->end()) {
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auto temp = it;
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++it;
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delete temp->second;
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}
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container->clear();
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}
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} // namespace libtextclassifier
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#endif // LIBTEXTCLASSIFIER_UTIL_GTL_STL_UTIL_H_
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