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95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/**
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* Copyright (c) 2020, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lnav_string_attr_type_hh
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#define lnav_string_attr_type_hh
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#include <string>
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#include <utility>
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#include <stdint.h>
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#include "base/intern_string.hh"
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#include "mapbox/variant.hpp"
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class logfile;
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struct bookmark_metadata;
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using string_attr_value = mapbox::util::variant<int64_t,
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const intern_string_t,
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std::string,
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std::shared_ptr<logfile>,
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bookmark_metadata*>;
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class string_attr_type_base {
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public:
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explicit string_attr_type_base(const char* name) noexcept : sat_name(name)
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{
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}
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const char* const sat_name;
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};
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template<typename T>
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class string_attr_type : public string_attr_type_base {
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public:
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using value_type = T;
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explicit string_attr_type(const char* name) noexcept
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: string_attr_type_base(name)
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{
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}
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template<typename U = T>
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std::enable_if_t<!std::is_void<U>::value,
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std::pair<const string_attr_type_base*, string_attr_value>>
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value(const U& val) const
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{
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return std::make_pair(this, val);
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}
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template<typename U = T>
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std::enable_if_t<std::is_void<U>::value,
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std::pair<const string_attr_type_base*, string_attr_value>>
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value() const
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{
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return std::make_pair(this, string_attr_value{});
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}
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};
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extern string_attr_type<void> SA_ORIGINAL_LINE;
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extern string_attr_type<void> SA_BODY;
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extern string_attr_type<void> SA_HIDDEN;
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extern string_attr_type<const intern_string_t> SA_FORMAT;
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extern string_attr_type<void> SA_REMOVED;
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extern string_attr_type<std::string> SA_INVALID;
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extern string_attr_type<std::string> SA_ERROR;
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#endif
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