vsg: include/vsg/core/visit.h Source File

vsg 1.1.10 VulkanSceneGraph library |

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visit.h
1#pragma once
2
3/* <editor-fold desc="MIT License">
4
5Copyright(c) 2022 Robert Osfield
6
7Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
8
9The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
10
11THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
12
13</editor-fold> */
14
15#include <vsg/core/ConstVisitor.h>
16#include <vsg/core/Visitor.h>
17
18namespace vsg
19{
20
22 //
23 // vsg::visit<> variants construct a Visitor and pass it to one or more objects accept() method
24 //
25
28 template<class V, typename I>
29 V visit(I begin, I end)
30 {
31 V visitor;
32 for (I itr = begin; itr != end; ++itr)
33 {
34 (*itr)->accept(visitor);
35 }
36 return visitor;
37 }
38
41 template<class V, typename P>
42 V visit(vsg::ref_ptr<P> ptr)
43 {
44 V visitor;
45 if (ptr) ptr->accept(visitor);
46 return visitor;
47 }
48
51 template<class V, typename P>
52 V visit(P* ptr)
53 {
54 V visitor;
55 if (ptr) ptr->accept(visitor);
56 return visitor;
57 }
58
61 template<class V, typename C>
62 V visit(const C& container)
63 {
64 V visitor;
65 for (const auto& object : container)
66 {
67 object->accept(visitor);
68 }
69 return visitor;
70 }
71
74 template<class V, typename C>
75 V visit(C& container)
76 {
77 V visitor;
78 for (auto& object : container)
79 {
80 object->accept(visitor);
81 }
82 return visitor;
83 }
84
86 //
87 // vsg::visit<> variants that pass an existing Visitor to one or more objects accept() method, returning a reference to the visitor
88 //
89
94 template<class V, typename I>
95 V& visit(V& visitor, I begin, I end)
96 {
97 for (I itr = begin; itr != end; ++itr)
98 {
99 (*itr)->accept(visitor);
100 }
101 return visitor;
102 }
103
108 template<class V, typename P>
109 V& visit(V& visitor, vsg::ref_ptr<P> ptr)
110 {
111 if (ptr) ptr->accept(visitor);
112 return visitor;
113 }
114
119 template<class V, typename P>
120 V& visit(V& visitor, P* ptr)
121 {
122 if (ptr) ptr->accept(visitor);
123 return visitor;
124 }
125
130 template<class V, typename C>
131 V& visit(V& visitor, const C& container)
132 {
133 for (const auto& object : container)
134 {
135 object->accept(visitor);
136 }
137 return visitor;
138 }
139
144 template<class V, typename C>
145 V& visit(V& visitor, C& container)
146 {
147 for (auto& object : container)
148 {
149 object->accept(visitor);
150 }
151 return visitor;
152 }
153
154} // namespace vsg