67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
// Copyright 2010-2022 Google LLC
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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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#ifndef OR_TOOLS_UTIL_STRING_ARRAY_H_
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#define OR_TOOLS_UTIL_STRING_ARRAY_H_
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#include <string>
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#include <vector>
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namespace operations_research {
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// ---------- Pretty Print Helpers ----------
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// See the straightforward (and unique) usage of this macro below.
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#define RETURN_STRINGIFIED_VECTOR(vector, separator, method) \
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std::string out; \
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for (int i = 0; i < vector.size(); ++i) { \
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if (i > 0) out += separator; \
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out += vector[i] method; \
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} \
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return out
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// Converts a vector into a string by calling the given method (or simply
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// getting the given string member), on all elements, and concatenating
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// the obtained strings with the given separator.
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// Join v[i].DebugString().
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template <class T>
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std::string JoinDebugString(const std::vector<T>& v,
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const std::string& separator) {
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RETURN_STRINGIFIED_VECTOR(v, separator, .DebugString());
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}
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// Join v[i]->DebugString().
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template <class T>
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std::string JoinDebugStringPtr(const std::vector<T>& v,
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const std::string& separator) {
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RETURN_STRINGIFIED_VECTOR(v, separator, ->DebugString());
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}
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// Join v[i]->name().
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template <class T>
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std::string JoinNamePtr(const std::vector<T>& v, const std::string& separator) {
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RETURN_STRINGIFIED_VECTOR(v, separator, ->name());
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}
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// Join v[i]->name.
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template <class T>
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std::string JoinNameFieldPtr(const std::vector<T>& v,
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const std::string& separator) {
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RETURN_STRINGIFIED_VECTOR(v, separator, ->name);
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}
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#undef RETURN_STRINGIFIED_VECTOR
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} // namespace operations_research
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#endif // OR_TOOLS_UTIL_STRING_ARRAY_H_
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