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site.h
1 //
2 // Copyright 2016 Pixar
3 //
4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
6 // compliance with the Apache License and the following modification to it:
7 // Section 6. Trademarks. is deleted and replaced with:
8 //
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11 // and its affiliates, except as required to comply with Section 4(c) of
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14 // You may obtain a copy of the Apache License at
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16 // http://www.apache.org/licenses/LICENSE-2.0
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24 #ifndef SDF_SITE_H
25 #define SDF_SITE_H
26 
27 #include "pxr/pxr.h"
28 #include "pxr/usd/sdf/layer.h"
29 #include "pxr/usd/sdf/path.h"
30 
31 #include <set>
32 #include <vector>
33 #include <boost/operators.hpp>
34 
35 PXR_NAMESPACE_OPEN_SCOPE
36 
43 class SdfSite
44  : public boost::totally_ordered<SdfSite>
45 {
46 public:
47  SdfSite() { }
48  SdfSite(const SdfLayerHandle& layer_, const SdfPath& path_)
49  : layer(layer_)
50  , path(path_)
51  { }
52 
53  bool operator==(const SdfSite& other) const
54  {
55  return layer == other.layer && path == other.path;
56  }
57 
58  bool operator<(const SdfSite& other) const
59  {
60  return layer < other.layer ||
61  (!(other.layer < layer) && path < other.path);
62  }
63 
68  explicit operator bool() const
69  {
70  return layer && !path.IsEmpty();
71  }
72 
73 public:
74  SdfLayerHandle layer;
75  SdfPath path;
76 };
77 
78 typedef std::set<SdfSite> SdfSiteSet;
79 typedef std::vector<SdfSite> SdfSiteVector;
80 
81 PXR_NAMESPACE_CLOSE_SCOPE
82 
83 #endif // SDF_SITE_H
An SdfSite is a simple representation of a location in a layer where opinions may possibly be found...
Definition: site.h:43
A path value used to locate objects in layers or scenegraphs.
Definition: path.h:287
bool IsEmpty() const noexcept
Returns true if this is the empty path (SdfPath::EmptyPath()).
Definition: path.h:409