1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
// Boost Lambda Library - operator_lambda_func_base.hpp -----------------
//
// Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ------------------------------------------------------------
#ifndef BOOST_LAMBDA_OPERATOR_LAMBDA_FUNC_BASE_HPP
#define BOOST_LAMBDA_OPERATOR_LAMBDA_FUNC_BASE_HPP
namespace boost {
namespace lambda {
// These operators cannot be implemented as apply functions of action
// templates
// Specialization for comma.
template<class Args>
class lambda_functor_base<other_action<comma_action>, Args> {
public:
Args args;
public:
explicit lambda_functor_base(const Args& a) : args(a) {}
template<class RET, CALL_TEMPLATE_ARGS>
RET call(CALL_FORMAL_ARGS) const {
return detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS),
detail::select(boost::tuples::get<1>(args), CALL_ACTUAL_ARGS);
}
template<class SigArgs> struct sig {
private:
typedef typename
detail::deduce_argument_types<Args, SigArgs>::type rets_t;
public:
typedef typename return_type_2_comma< // comma needs special handling
typename detail::element_or_null<0, rets_t>::type,
typename detail::element_or_null<1, rets_t>::type
>::type type;
};
};
namespace detail {
// helper traits to make the expression shorter, takes binary action
// bound argument tuple, open argument tuple and gives the return type
template<class Action, class Bound, class Open> class binary_rt {
private:
typedef typename
detail::deduce_argument_types<Bound, Open>::type rets_t;
public:
typedef typename return_type_2_prot<
Action,
typename detail::element_or_null<0, rets_t>::type,
typename detail::element_or_null<1, rets_t>::type
>::type type;
};
// same for unary actions
template<class Action, class Bound, class Open> class unary_rt {
private:
typedef typename
detail::deduce_argument_types<Bound, Open>::type rets_t;
public:
typedef typename return_type_1_prot<
Action,
typename detail::element_or_null<0, rets_t>::type
>::type type;
};
} // end detail
// Specialization for logical and (to preserve shortcircuiting)
// this could be done with a macro as the others, code used to be different
template<class Args>
class lambda_functor_base<logical_action<and_action>, Args> {
public:
Args args;
public:
explicit lambda_functor_base(const Args& a) : args(a) {}
template<class RET, CALL_TEMPLATE_ARGS>
RET call(CALL_FORMAL_ARGS) const {
return detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS) &&
detail::select(boost::tuples::get<1>(args), CALL_ACTUAL_ARGS);
}
template<class SigArgs> struct sig {
typedef typename
detail::binary_rt<logical_action<and_action>, Args, SigArgs>::type type;
};
};
// Specialization for logical or (to preserve shortcircuiting)
// this could be done with a macro as the others, code used to be different
template<class Args>
class lambda_functor_base<logical_action< or_action>, Args> {
public:
Args args;
public:
explicit lambda_functor_base(const Args& a) : args(a) {}
template<class RET, CALL_TEMPLATE_ARGS>
RET call(CALL_FORMAL_ARGS) const {
return detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS) ||
detail::select(boost::tuples::get<1>(args), CALL_ACTUAL_ARGS);
}
template<class SigArgs> struct sig {
typedef typename
detail::binary_rt<logical_action<or_action>, Args, SigArgs>::type type;
};
};
// Specialization for subscript
template<class Args>
class lambda_functor_base<other_action<subscript_action>, Args> {
public:
Args args;
public:
explicit lambda_functor_base(const Args& a) : args(a) {}
template<class RET, CALL_TEMPLATE_ARGS>
RET call(CALL_FORMAL_ARGS) const {
return detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS)
[detail::select(boost::tuples::get<1>(args), CALL_ACTUAL_ARGS)];
}
template<class SigArgs> struct sig {
typedef typename
detail::binary_rt<other_action<subscript_action>, Args, SigArgs>::type
type;
};
};
#define BOOST_LAMBDA_BINARY_ACTION(SYMBOL, ACTION_CLASS) \
template<class Args> \
class lambda_functor_base<ACTION_CLASS, Args> { \
public: \
Args args; \
public: \
explicit lambda_functor_base(const Args& a) : args(a) {} \
\
template<class RET, CALL_TEMPLATE_ARGS> \
RET call(CALL_FORMAL_ARGS) const { \
return detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS) \
SYMBOL \
detail::select(boost::tuples::get<1>(args), CALL_ACTUAL_ARGS); \
} \
template<class SigArgs> struct sig { \
typedef typename \
detail::binary_rt<ACTION_CLASS, Args, SigArgs>::type type; \
}; \
};
#define BOOST_LAMBDA_PREFIX_UNARY_ACTION(SYMBOL, ACTION_CLASS) \
template<class Args> \
class lambda_functor_base<ACTION_CLASS, Args> { \
public: \
Args args; \
public: \
explicit lambda_functor_base(const Args& a) : args(a) {} \
\
template<class RET, CALL_TEMPLATE_ARGS> \
RET call(CALL_FORMAL_ARGS) const { \
return SYMBOL \
detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS); \
} \
template<class SigArgs> struct sig { \
typedef typename \
detail::unary_rt<ACTION_CLASS, Args, SigArgs>::type type; \
}; \
};
#define BOOST_LAMBDA_POSTFIX_UNARY_ACTION(SYMBOL, ACTION_CLASS) \
template<class Args> \
class lambda_functor_base<ACTION_CLASS, Args> { \
public: \
Args args; \
public: \
explicit lambda_functor_base(const Args& a) : args(a) {} \
\
template<class RET, CALL_TEMPLATE_ARGS> \
RET call(CALL_FORMAL_ARGS) const { \
return \
detail::select(boost::tuples::get<0>(args), CALL_ACTUAL_ARGS) SYMBOL; \
} \
template<class SigArgs> struct sig { \
typedef typename \
detail::unary_rt<ACTION_CLASS, Args, SigArgs>::type type; \
}; \
};
BOOST_LAMBDA_BINARY_ACTION(+,arithmetic_action<plus_action>)
BOOST_LAMBDA_BINARY_ACTION(-,arithmetic_action<minus_action>)
BOOST_LAMBDA_BINARY_ACTION(*,arithmetic_action<multiply_action>)
BOOST_LAMBDA_BINARY_ACTION(/,arithmetic_action<divide_action>)
BOOST_LAMBDA_BINARY_ACTION(%,arithmetic_action<remainder_action>)
BOOST_LAMBDA_BINARY_ACTION(<<,bitwise_action<leftshift_action>)
BOOST_LAMBDA_BINARY_ACTION(>>,bitwise_action<rightshift_action>)
BOOST_LAMBDA_BINARY_ACTION(&,bitwise_action<and_action>)
BOOST_LAMBDA_BINARY_ACTION(|,bitwise_action<or_action>)
BOOST_LAMBDA_BINARY_ACTION(^,bitwise_action<xor_action>)
BOOST_LAMBDA_BINARY_ACTION(<,relational_action<less_action>)
BOOST_LAMBDA_BINARY_ACTION(>,relational_action<greater_action>)
BOOST_LAMBDA_BINARY_ACTION(<=,relational_action<lessorequal_action>)
BOOST_LAMBDA_BINARY_ACTION(>=,relational_action<greaterorequal_action>)
BOOST_LAMBDA_BINARY_ACTION(==,relational_action<equal_action>)
BOOST_LAMBDA_BINARY_ACTION(!=,relational_action<notequal_action>)
BOOST_LAMBDA_BINARY_ACTION(+=,arithmetic_assignment_action<plus_action>)
BOOST_LAMBDA_BINARY_ACTION(-=,arithmetic_assignment_action<minus_action>)
BOOST_LAMBDA_BINARY_ACTION(*=,arithmetic_assignment_action<multiply_action>)
BOOST_LAMBDA_BINARY_ACTION(/=,arithmetic_assignment_action<divide_action>)
BOOST_LAMBDA_BINARY_ACTION(%=,arithmetic_assignment_action<remainder_action>)
BOOST_LAMBDA_BINARY_ACTION(<<=,bitwise_assignment_action<leftshift_action>)
BOOST_LAMBDA_BINARY_ACTION(>>=,bitwise_assignment_action<rightshift_action>)
BOOST_LAMBDA_BINARY_ACTION(&=,bitwise_assignment_action<and_action>)
BOOST_LAMBDA_BINARY_ACTION(|=,bitwise_assignment_action<or_action>)
BOOST_LAMBDA_BINARY_ACTION(^=,bitwise_assignment_action<xor_action>)
BOOST_LAMBDA_BINARY_ACTION(=,other_action< assignment_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(+, unary_arithmetic_action<plus_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(-, unary_arithmetic_action<minus_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(~, bitwise_action<not_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(!, logical_action<not_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(++, pre_increment_decrement_action<increment_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(--, pre_increment_decrement_action<decrement_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(&,other_action<addressof_action>)
BOOST_LAMBDA_PREFIX_UNARY_ACTION(*,other_action<contentsof_action>)
BOOST_LAMBDA_POSTFIX_UNARY_ACTION(++, post_increment_decrement_action<increment_action>)
BOOST_LAMBDA_POSTFIX_UNARY_ACTION(--, post_increment_decrement_action<decrement_action>)
#undef BOOST_LAMBDA_POSTFIX_UNARY_ACTION
#undef BOOST_LAMBDA_PREFIX_UNARY_ACTION
#undef BOOST_LAMBDA_BINARY_ACTION
} // namespace lambda
} // namespace boost
#endif
|
