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1 // Copyright David Abrahams 2002.
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2 // Distributed under the Boost Software License, Version 1.0. (See
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3 // accompanying file LICENSE_1_0.txt or copy at
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4 // http://www.boost.org/LICENSE_1_0.txt)
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5 #ifndef OBJECT_ATTRIBUTES_DWA2002615_HPP
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6 # define OBJECT_ATTRIBUTES_DWA2002615_HPP
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7
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8 # include <boost/python/detail/prefix.hpp>
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9
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10 # include <boost/python/proxy.hpp>
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11 # include <boost/python/object_core.hpp>
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12 # include <boost/python/object_protocol.hpp>
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13
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14 namespace boost { namespace python { namespace api {
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15
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16 struct const_attribute_policies
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17 {
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18 typedef char const* key_type;
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19 static object get(object const& target, char const* key);
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20 static object get(object const& target, object const& key);
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21 };
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22
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23 struct attribute_policies : const_attribute_policies
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24 {
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25 static object const& set(object const& target, char const* key, object const& value);
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26 static void del(object const&target, char const* key);
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27 };
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28
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29 struct const_objattribute_policies
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30 {
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31 typedef object const key_type;
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32 static object get(object const& target, object const& key);
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33 };
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34
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35 struct objattribute_policies : const_objattribute_policies
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36 {
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37 static object const& set(object const& target, object const& key, object const& value);
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38 static void del(object const&target, object const& key);
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39 };
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40
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41 //
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42 // implementation
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43 //
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44 template <class U>
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45 inline object_attribute object_operators<U>::attr(char const* name)
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46 {
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47 object_cref2 x = *static_cast<U*>(this);
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48 return object_attribute(x, name);
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49 }
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50
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51 template <class U>
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52 inline const_object_attribute object_operators<U>::attr(char const* name) const
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53 {
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54 object_cref2 x = *static_cast<U const*>(this);
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55 return const_object_attribute(x, name);
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56 }
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57
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58 template <class U>
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59 inline object_objattribute object_operators<U>::attr(object const& name)
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60 {
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61 object_cref2 x = *static_cast<U*>(this);
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62 return object_objattribute(x, name);
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63 }
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64
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65 template <class U>
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66 inline const_object_objattribute object_operators<U>::attr(object const& name) const
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67 {
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68 object_cref2 x = *static_cast<U const*>(this);
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69 return const_object_objattribute(x, name);
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70 }
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71
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72 inline object const_attribute_policies::get(object const& target, char const* key)
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73 {
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74 return python::getattr(target, key);
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75 }
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76
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77 inline object const_objattribute_policies::get(object const& target, object const& key)
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78 {
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79 return python::getattr(target, key);
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80 }
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81
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82 inline object const& attribute_policies::set(
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83 object const& target
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84 , char const* key
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85 , object const& value)
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86 {
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87 python::setattr(target, key, value);
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88 return value;
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89 }
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90
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91 inline object const& objattribute_policies::set(
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92 object const& target
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93 , object const& key
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94 , object const& value)
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95 {
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96 python::setattr(target, key, value);
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97 return value;
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98 }
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99
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100 inline void attribute_policies::del(
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101 object const& target
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102 , char const* key)
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103 {
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104 python::delattr(target, key);
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105 }
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106
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107 inline void objattribute_policies::del(
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108 object const& target
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109 , object const& key)
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110 {
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111 python::delattr(target, key);
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112 }
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113
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114 }}} // namespace boost::python::api
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115
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116 #endif // OBJECT_ATTRIBUTES_DWA2002615_HPP
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