aboutsummaryrefslogtreecommitdiff
path: root/paludis/resolver/decision.hh
blob: 12fb6f11694774480a42ebfc3c1e7cc013ea600c (plain)
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
/* vim: set sw=4 sts=4 et foldmethod=syntax : */

/*
 * Copyright (c) 2009, 2010 Ciaran McCreesh
 *
 * This file is part of the Paludis package manager. Paludis is free software;
 * you can redistribute it and/or modify it under the terms of the GNU General
 * Public License version 2, as published by the Free Software Foundation.
 *
 * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef PALUDIS_GUARD_PALUDIS_RESOLVER_DECISION_HH
#define PALUDIS_GUARD_PALUDIS_RESOLVER_DECISION_HH 1

#include <paludis/resolver/decision-fwd.hh>
#include <paludis/resolver/destination-fwd.hh>
#include <paludis/resolver/unsuitable_candidates-fwd.hh>
#include <paludis/util/private_implementation_pattern.hh>
#include <paludis/util/simple_visitor.hh>
#include <paludis/util/type_list.hh>
#include <paludis/serialise-fwd.hh>
#include <paludis/package_id.hh>

namespace paludis
{
    namespace resolver
    {
        class PALUDIS_VISIBLE Decision :
            public virtual DeclareAbstractAcceptMethods<Decision, MakeTypeList<
                NothingNoChangeDecision, ExistingNoChangeDecision, ChangesToMakeDecision,
                RemoveDecision, UnableToMakeDecision>::Type>
        {
            public:
                virtual ~Decision() = 0;

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result)) = 0;

                virtual void serialise(Serialiser &) const = 0;

                static const std::tr1::shared_ptr<Decision> deserialise(
                        Deserialisation & d) PALUDIS_ATTRIBUTE((warn_unused_result));
        };

        class PALUDIS_VISIBLE NothingNoChangeDecision :
            public Decision,
            public ImplementAcceptMethods<Decision, NothingNoChangeDecision>,
            private PrivateImplementationPattern<NothingNoChangeDecision>
        {
            public:
                NothingNoChangeDecision(const bool);
                ~NothingNoChangeDecision();

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual void serialise(Serialiser &) const;
        };

        class PALUDIS_VISIBLE ExistingNoChangeDecision :
            public Decision,
            public ImplementAcceptMethods<Decision, ExistingNoChangeDecision>,
            private PrivateImplementationPattern<ExistingNoChangeDecision>
        {
            public:
                ExistingNoChangeDecision(
                        const std::tr1::shared_ptr<const PackageID> &,
                        const bool is_same,
                        const bool is_same_version,
                        const bool is_transient,
                        const bool taken
                        );
                ~ExistingNoChangeDecision();

                const std::tr1::shared_ptr<const PackageID> existing_id() const
                    PALUDIS_ATTRIBUTE((warn_unused_result));

                bool is_same() const PALUDIS_ATTRIBUTE((warn_unused_result));
                bool is_same_version() const PALUDIS_ATTRIBUTE((warn_unused_result));
                bool is_transient() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual void serialise(Serialiser &) const;
        };

        class PALUDIS_VISIBLE ChangesToMakeDecision :
            public Decision,
            public ImplementAcceptMethods<Decision, ChangesToMakeDecision>,
            private PrivateImplementationPattern<ChangesToMakeDecision>,
            public std::tr1::enable_shared_from_this<ChangesToMakeDecision>
        {
            public:
                ChangesToMakeDecision(
                        const std::tr1::shared_ptr<const PackageID> &,
                        const bool best,
                        const bool taken,
                        const std::tr1::shared_ptr<const Destination> &
                        );

                ~ChangesToMakeDecision();

                const std::tr1::shared_ptr<const Destination> destination() const
                    PALUDIS_ATTRIBUTE((warn_unused_result));

                void set_destination(const std::tr1::shared_ptr<const Destination> &);

                const std::tr1::shared_ptr<const PackageID> origin_id() const
                    PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual bool best() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual void serialise(Serialiser &) const;

                static const std::tr1::shared_ptr<ChangesToMakeDecision> deserialise(
                        Deserialisation & d) PALUDIS_ATTRIBUTE((warn_unused_result));
        };

        class PALUDIS_VISIBLE RemoveDecision :
            public Decision,
            public ImplementAcceptMethods<Decision, RemoveDecision>,
            private PrivateImplementationPattern<RemoveDecision>
        {
            public:
                RemoveDecision(const bool taken);
                ~RemoveDecision();

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual void serialise(Serialiser &) const;

                static const std::tr1::shared_ptr<RemoveDecision> deserialise(
                        Deserialisation & d) PALUDIS_ATTRIBUTE((warn_unused_result));
        };

        class PALUDIS_VISIBLE UnableToMakeDecision :
            public Decision,
            public ImplementAcceptMethods<Decision, UnableToMakeDecision>,
            private PrivateImplementationPattern<UnableToMakeDecision>,
            public std::tr1::enable_shared_from_this<UnableToMakeDecision>
        {
            public:
                UnableToMakeDecision(
                        const std::tr1::shared_ptr<const UnsuitableCandidates> &,
                        const bool taken);
                ~UnableToMakeDecision();

                virtual bool taken() const PALUDIS_ATTRIBUTE((warn_unused_result));

                virtual void serialise(Serialiser &) const;

                const std::tr1::shared_ptr<const UnsuitableCandidates> unsuitable_candidates() const PALUDIS_ATTRIBUTE((warn_unused_result));

                static const std::tr1::shared_ptr<UnableToMakeDecision> deserialise(
                        Deserialisation & d) PALUDIS_ATTRIBUTE((warn_unused_result));
        };
    }

#ifdef PALUDIS_HAVE_EXTERN_TEMPLATE
    extern template class PrivateImplementationPattern<resolver::NothingNoChangeDecision>;
    extern template class PrivateImplementationPattern<resolver::ExistingNoChangeDecision>;
    extern template class PrivateImplementationPattern<resolver::ChangesToMakeDecision>;
    extern template class PrivateImplementationPattern<resolver::UnableToMakeDecision>;
    extern template class PrivateImplementationPattern<resolver::RemoveDecision>;
#endif

}

#endif