impl/value_ref.ipp
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/boostorg/json | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_JSON_IMPL_VALUE_REF_IPP | ||
| 11 | #define BOOST_JSON_IMPL_VALUE_REF_IPP | ||
| 12 | |||
| 13 | #include <boost/json/value_ref.hpp> | ||
| 14 | #include <boost/json/array.hpp> | ||
| 15 | #include <boost/json/value.hpp> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace json { | ||
| 19 | |||
| 20 | 3236 | value_ref:: | |
| 21 | operator | ||
| 22 | value() const | ||
| 23 | { | ||
| 24 | 3236 | return make_value({}); | |
| 25 | } | ||
| 26 | |||
| 27 | value | ||
| 28 | ✗ | value_ref:: | |
| 29 | from_init_list( | ||
| 30 | void const* p, | ||
| 31 | storage_ptr sp) | ||
| 32 | { | ||
| 33 | return make_value( | ||
| 34 | *reinterpret_cast< | ||
| 35 | init_list const*>(p), | ||
| 36 | ✗ | std::move(sp)); | |
| 37 | } | ||
| 38 | |||
| 39 | bool | ||
| 40 | 886 | value_ref:: | |
| 41 | is_key_value_pair() const noexcept | ||
| 42 | { | ||
| 43 | 886 | if(what_ != what::ini) | |
| 44 | 363 | return false; | |
| 45 | 523 | if(arg_.init_list_.size() != 2) | |
| 46 | 5 | return false; | |
| 47 | auto const& e = | ||
| 48 | 518 | *arg_.init_list_.begin(); | |
| 49 | 518 | if( e.what_ != what::str && | |
| 50 | 25 | e.what_ != what::strfunc) | |
| 51 | 23 | return false; | |
| 52 | 495 | return true; | |
| 53 | } | ||
| 54 | |||
| 55 | bool | ||
| 56 | 530 | value_ref:: | |
| 57 | maybe_object( | ||
| 58 | std::initializer_list< | ||
| 59 | value_ref> init) noexcept | ||
| 60 | { | ||
| 61 | 1025 | for(auto const& e : init) | |
| 62 | 886 | if(! e.is_key_value_pair()) | |
| 63 | 391 | return false; | |
| 64 | 139 | return true; | |
| 65 | } | ||
| 66 | |||
| 67 | string_view | ||
| 68 | 490 | value_ref:: | |
| 69 | get_string() const noexcept | ||
| 70 | { | ||
| 71 | 490 | BOOST_ASSERT( | |
| 72 | what_ == what::str || | ||
| 73 | what_ == what::strfunc); | ||
| 74 | 490 | if (what_ == what::strfunc) | |
| 75 | 2 | return *static_cast<const string*>(f_.p); | |
| 76 | 488 | return arg_.str_; | |
| 77 | } | ||
| 78 | |||
| 79 | value | ||
| 80 | 9160 | value_ref:: | |
| 81 | make_value( | ||
| 82 | storage_ptr sp) const | ||
| 83 | { | ||
| 84 | 9160 | switch(what_) | |
| 85 | { | ||
| 86 | 473 | default: | |
| 87 | case what::str: | ||
| 88 | 946 | return string( | |
| 89 | arg_.str_, | ||
| 90 | 930 | std::move(sp)); | |
| 91 | |||
| 92 | 170 | case what::ini: | |
| 93 | return make_value( | ||
| 94 | arg_.init_list_, | ||
| 95 | 173 | std::move(sp)); | |
| 96 | |||
| 97 | 58 | case what::func: | |
| 98 | 116 | return f_.f(f_.p, | |
| 99 | 58 | std::move(sp)); | |
| 100 | |||
| 101 | 5 | case what::strfunc: | |
| 102 | 10 | return f_.f(f_.p, | |
| 103 | 5 | std::move(sp)); | |
| 104 | |||
| 105 | 8454 | case what::cfunc: | |
| 106 | 16908 | return cf_.f(cf_.p, | |
| 107 | 8454 | std::move(sp)); | |
| 108 | } | ||
| 109 | } | ||
| 110 | |||
| 111 | value | ||
| 112 | 172 | value_ref:: | |
| 113 | make_value( | ||
| 114 | std::initializer_list< | ||
| 115 | value_ref> init, | ||
| 116 | storage_ptr sp) | ||
| 117 | { | ||
| 118 | 172 | if(maybe_object(init)) | |
| 119 | 60 | return make_object( | |
| 120 | 60 | init, std::move(sp)); | |
| 121 | 284 | return make_array( | |
| 122 | 281 | init, std::move(sp)); | |
| 123 | } | ||
| 124 | |||
| 125 | object | ||
| 126 | 139 | value_ref:: | |
| 127 | make_object( | ||
| 128 | std::initializer_list<value_ref> init, | ||
| 129 | storage_ptr sp) | ||
| 130 | { | ||
| 131 | 139 | object obj(std::move(sp)); | |
| 132 | 139 | obj.reserve(init.size()); | |
| 133 | 629 | for(auto const& e : init) | |
| 134 | 490 | obj.emplace( | |
| 135 | e.arg_.init_list_.begin()[0].get_string(), | ||
| 136 | 980 | e.arg_.init_list_.begin()[1].make_value( | |
| 137 | obj.storage())); | ||
| 138 | 139 | return obj; | |
| 139 | ✗ | } | |
| 140 | |||
| 141 | array | ||
| 142 | 379 | value_ref:: | |
| 143 | make_array( | ||
| 144 | std::initializer_list< | ||
| 145 | value_ref> init, | ||
| 146 | storage_ptr sp) | ||
| 147 | { | ||
| 148 | 379 | array arr(std::move(sp)); | |
| 149 | 379 | arr.reserve(init.size()); | |
| 150 | 1434 | for(auto const& e : init) | |
| 151 | 1058 | arr.emplace_back( | |
| 152 | 2116 | e.make_value( | |
| 153 | arr.storage())); | ||
| 154 | 376 | return arr; | |
| 155 | 3 | } | |
| 156 | |||
| 157 | void | ||
| 158 | 214 | value_ref:: | |
| 159 | write_array( | ||
| 160 | value* dest, | ||
| 161 | std::initializer_list< | ||
| 162 | value_ref> init, | ||
| 163 | storage_ptr const& sp) | ||
| 164 | { | ||
| 165 | struct undo | ||
| 166 | { | ||
| 167 | value* const base; | ||
| 168 | value* pos; | ||
| 169 | 214 | ~undo() | |
| 170 | { | ||
| 171 | 214 | if(pos) | |
| 172 | 36 | while(pos > base) | |
| 173 | 20 | (--pos)->~value(); | |
| 174 | 214 | } | |
| 175 | }; | ||
| 176 | 214 | undo u{dest, dest}; | |
| 177 | 730 | for(auto const& e : init) | |
| 178 | { | ||
| 179 | 16 | ::new(u.pos) value( | |
| 180 | 564 | e.make_value(sp)); | |
| 181 | 516 | ++u.pos; | |
| 182 | } | ||
| 183 | 198 | u.pos = nullptr; | |
| 184 | 214 | } | |
| 185 | |||
| 186 | } // namespace json | ||
| 187 | } // namespace boost | ||
| 188 | |||
| 189 | #endif | ||
| 190 |