blob: 1a3381a78d3c9ecdc2ec5af9299b5e2809497cd5 (
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
|
#include "state.h"
#include "identity.h"
using namespace erebos;
using std::make_shared;
const UUID LocalState::headTypeId { "1d7491a9-7bcb-4eaa-8f13-c8c4c4087e4e" };
LocalState::LocalState():
p(make_shared<Priv>())
{}
LocalState::LocalState(const Ref & ref):
LocalState()
{
auto rec = ref->asRecord();
if (!rec)
return;
if (auto x = rec->item("id").asRef())
p->identity = Identity::load(*x);
for (auto i : rec->items("shared"))
if (const auto & x = i.as<SharedState>())
p->shared.push_back(*x);
}
Ref LocalState::store(const Storage & st) const
{
vector<Record::Item> items;
if (p->identity)
items.emplace_back("id", *p->identity->ref());
for (const auto & x : p->shared)
items.emplace_back("shared", x);
return st.storeObject(Record(std::move(items)));
}
const optional<Identity> & LocalState::identity() const
{
return p->identity;
}
LocalState LocalState::identity(const Identity & id) const
{
LocalState ret;
ret.p->identity = id;
ret.p->shared = p->shared;
return ret;
}
vector<Ref> LocalState::lookupShared(UUID type) const
{
vector<Stored<SharedState>> found;
vector<Stored<SharedState>> process = p->shared;
while (!process.empty()) {
auto cur = std::move(process.back());
process.pop_back();
if (cur->type == type) {
found.push_back(std::move(cur));
continue;
}
for (const auto & x : cur->prev)
process.push_back(x);
}
filterAncestors(found);
vector<Ref> res;
for (const auto & s : found)
for (const auto & v : s->value)
res.push_back(v);
return res;
}
vector<Ref> LocalState::sharedRefs() const
{
vector<Ref> refs;
for (const auto & x : p->shared)
refs.push_back(x.ref());
return refs;
}
LocalState LocalState::sharedRefAdd(const Ref & ref) const
{
const Storage * st;
if (p->shared.size() > 0)
st = &p->shared[0].ref().storage();
else if (p->identity)
st = &p->identity->ref()->storage();
else
st = &ref.storage();
LocalState ret;
ret.p->identity = p->identity;
ret.p->shared = p->shared;
ret.p->shared.push_back(SharedState(ref).store(*st));
filterAncestors(ret.p->shared);
return ret;
}
LocalState LocalState::updateShared(UUID type, const vector<Ref> & xs) const
{
const Storage * st;
if (p->shared.size() > 0)
st = &p->shared[0].ref().storage();
else if (p->identity)
st = &p->identity->ref()->storage();
else if (xs.size() > 0)
st = &xs[0].storage();
else
return *this;
LocalState ret;
ret.p->identity = p->identity;
ret.p->shared.push_back(SharedState(p->shared, type, xs).store(*st));
return ret;
}
SharedState::SharedState(const Ref & ref)
{
auto rec = ref->asRecord();
if (!rec)
return;
for (auto i : rec->items("PREV"))
if (const auto & x = i.as<SharedState>())
prev.push_back(*x);
if (auto x = rec->item("type").asUUID())
type = *x;
for (auto i : rec->items("value"))
if (const auto & x = i.asRef())
value.push_back(*x);
}
Ref SharedState::store(const Storage & st) const
{
vector<Record::Item> items;
for (const auto & x : prev)
items.emplace_back("PREV", x);
items.emplace_back("type", type);
for (const auto & x : value)
items.emplace_back("value", x);
return st.storeObject(Record(std::move(items)));
}
template<>
optional<Identity> LocalState::lens<optional<Identity>>(const LocalState & x)
{
return x.identity();
}
template<>
vector<Ref> LocalState::lens<vector<Ref>>(const LocalState & x)
{
return x.sharedRefs();
}
|