MongoDB C++ Driver  mongocxx-3.1.0
view_or_value.hpp
1 // Copyright 2015 MongoDB Inc.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #pragma once
16 
17 #include <string>
18 
19 #include <bsoncxx/stdx/string_view.hpp>
20 #include <bsoncxx/view_or_value.hpp>
21 
22 #include <bsoncxx/config/prelude.hpp>
23 
24 namespace bsoncxx {
25 BSONCXX_INLINE_NAMESPACE_BEGIN
26 namespace string {
27 
36 class BSONCXX_API view_or_value : public bsoncxx::view_or_value<stdx::string_view, std::string> {
37  public:
42 
46  BSONCXX_INLINE view_or_value() = default;
47 
55  BSONCXX_INLINE view_or_value(const char* str)
56  : bsoncxx::view_or_value<stdx::string_view, std::string>(stdx::string_view(str)) {
57  }
58 
69  BSONCXX_INLINE view_or_value(const std::string& str)
70  : bsoncxx::view_or_value<stdx::string_view, std::string>(stdx::string_view(str)) {
71  }
72 
83  view_or_value terminated() const;
84 
92  const char* data() const;
93 };
94 
102 BSONCXX_INLINE bool operator==(const view_or_value& lhs, const char* rhs) {
103  return lhs.view() == stdx::string_view(rhs);
104 }
105 
106 BSONCXX_INLINE bool operator!=(const view_or_value& lhs, const char* rhs) {
107  return !(lhs == rhs);
108 }
109 
110 BSONCXX_INLINE bool operator==(const char* lhs, const view_or_value& rhs) {
111  return rhs == lhs;
112 }
113 
114 BSONCXX_INLINE bool operator!=(const char* lhs, const view_or_value& rhs) {
115  return !(rhs == lhs);
116 }
120 
121 } // namespace string
122 BSONCXX_INLINE_NAMESPACE_END
123 } // namespace bsoncxx
124 
125 #include <bsoncxx/config/postlude.hpp>
view_or_value(const char *str)
Construct a string::view_or_value using a null-terminated const char *.
Definition: view_or_value.hpp:55
Definition: error_code.hpp:72
view_or_value(const std::string &str)
Allow construction with an l-value reference to a std::string.
Definition: view_or_value.hpp:69
bool operator==(const view_or_value &lhs, const char *rhs)
Comparison operators for comparing string::view_or_value directly with const char *...
Definition: view_or_value.hpp:102
Class representing a view-or-value variant type.
Definition: view_or_value.hpp:30
Class representing a view-or-value variant type for strings.
Definition: view_or_value.hpp:36
const View & view() const
Get a View for the type.
Definition: view_or_value.hpp:135
Definition: element.hpp:24