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7ca8d9f0f8
Some clients have been explicitly checking whether the string specified after a keyword is empty. Offer them a way to specify that the string must be non-empty as part of the binding type.
70 lines
1.1 KiB
C++
70 lines
1.1 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#if defined(__SUNPRO_CC)
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# include <string>
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# include <vector>
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namespace ArgumentParser {
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template <typename T>
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struct Maybe;
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template <>
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struct Maybe<std::string> : public std::string
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{
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using std::string::basic_string;
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};
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template <typename T>
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struct MaybeEmpty;
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template <typename T>
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struct MaybeEmpty<std::vector<T>> : public std::vector<T>
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{
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using std::vector<T>::vector;
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};
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template <typename T>
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struct NonEmpty;
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template <typename T>
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struct NonEmpty<std::vector<T>> : public std::vector<T>
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{
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using std::vector<T>::vector;
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};
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template <>
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struct NonEmpty<std::string> : public std::string
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{
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using std::string::basic_string;
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};
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} // namespace ArgumentParser
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#else
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namespace ArgumentParser {
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template <typename T>
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struct Maybe : public T
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{
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using T::T;
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};
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template <typename T>
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struct MaybeEmpty : public T
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{
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using T::T;
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};
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template <typename T>
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struct NonEmpty : public T
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{
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using T::T;
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};
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} // namespace ArgumentParser
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#endif
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