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
|
/*
* IdentifierBase.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
VCMI_LIB_NAMESPACE_BEGIN
class IdentifierResolutionException : public std::runtime_error
{
public:
const std::string identifierName;
IdentifierResolutionException(const std::string & identifierName )
: std::runtime_error("Failed to resolve identifier " + identifierName)
, identifierName(identifierName)
{}
};
class IdentifierBase
{
protected:
constexpr IdentifierBase():
num(-1)
{}
explicit constexpr IdentifierBase(int32_t value):
num(value)
{}
~IdentifierBase() = default;
/// Attempts to resolve identifier using provided entity type
/// Returns resolved numeric identifier
/// Throws IdentifierResolutionException on failure
static int32_t resolveIdentifier(const std::string & entityType, const std::string identifier);
public:
int32_t num;
constexpr int32_t getNum() const
{
return num;
}
constexpr void setNum(int32_t value)
{
num = value;
}
constexpr bool hasValue() const
{
return num >= 0;
}
struct hash
{
size_t operator()(const IdentifierBase & id) const
{
return std::hash<int>()(id.num);
}
};
constexpr void advance(int change)
{
num += change;
}
constexpr operator int32_t () const
{
return num;
}
friend std::ostream& operator<<(std::ostream& os, const IdentifierBase& dt)
{
return os << dt.num;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Note: use template to force different type, blocking any Identifier<A> <=> Identifier<B> comparisons
template<typename FinalClass>
class Identifier : public IdentifierBase
{
using BaseClass = IdentifierBase;
public:
constexpr Identifier()
{}
explicit constexpr Identifier(int32_t value):
IdentifierBase(value)
{}
constexpr bool operator == (const Identifier & b) const { return BaseClass::num == b.num; }
constexpr bool operator <= (const Identifier & b) const { return BaseClass::num <= b.num; }
constexpr bool operator >= (const Identifier & b) const { return BaseClass::num >= b.num; }
constexpr bool operator != (const Identifier & b) const { return BaseClass::num != b.num; }
constexpr bool operator < (const Identifier & b) const { return BaseClass::num < b.num; }
constexpr bool operator > (const Identifier & b) const { return BaseClass::num > b.num; }
constexpr FinalClass & operator++()
{
++BaseClass::num;
return static_cast<FinalClass&>(*this);
}
constexpr FinalClass & operator--()
{
--BaseClass::num;
return static_cast<FinalClass&>(*this);
}
constexpr FinalClass operator--(int)
{
FinalClass ret(num);
--BaseClass::num;
return ret;
}
constexpr FinalClass operator++(int)
{
FinalClass ret(num);
++BaseClass::num;
return ret;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<typename FinalClass, typename BaseClass>
class IdentifierWithEnum : public BaseClass
{
using EnumType = typename BaseClass::Type;
static_assert(std::is_same_v<std::underlying_type_t<EnumType>, int32_t>, "Entity Identifier must use int32_t");
public:
constexpr EnumType toEnum() const
{
return static_cast<EnumType>(BaseClass::num);
}
constexpr IdentifierWithEnum(const EnumType & enumValue)
{
BaseClass::num = static_cast<int32_t>(enumValue);
}
constexpr IdentifierWithEnum(int32_t _num = -1)
{
BaseClass::num = _num;
}
constexpr bool operator == (const EnumType & b) const { return BaseClass::num == static_cast<int32_t>(b); }
constexpr bool operator <= (const EnumType & b) const { return BaseClass::num <= static_cast<int32_t>(b); }
constexpr bool operator >= (const EnumType & b) const { return BaseClass::num >= static_cast<int32_t>(b); }
constexpr bool operator != (const EnumType & b) const { return BaseClass::num != static_cast<int32_t>(b); }
constexpr bool operator < (const EnumType & b) const { return BaseClass::num < static_cast<int32_t>(b); }
constexpr bool operator > (const EnumType & b) const { return BaseClass::num > static_cast<int32_t>(b); }
constexpr bool operator == (const IdentifierWithEnum & b) const { return BaseClass::num == b.num; }
constexpr bool operator <= (const IdentifierWithEnum & b) const { return BaseClass::num <= b.num; }
constexpr bool operator >= (const IdentifierWithEnum & b) const { return BaseClass::num >= b.num; }
constexpr bool operator != (const IdentifierWithEnum & b) const { return BaseClass::num != b.num; }
constexpr bool operator < (const IdentifierWithEnum & b) const { return BaseClass::num < b.num; }
constexpr bool operator > (const IdentifierWithEnum & b) const { return BaseClass::num > b.num; }
constexpr FinalClass & operator++()
{
++BaseClass::num;
return static_cast<FinalClass&>(*this);
}
constexpr FinalClass operator++(int)
{
FinalClass ret(BaseClass::num);
++BaseClass::num;
return ret;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<typename FinalClass>
class EntityIdentifier : public Identifier<FinalClass>
{
public:
using Identifier<FinalClass>::Identifier;
template <typename Handler>
void serialize(Handler &h)
{
auto * finalClass = static_cast<FinalClass*>(this);
std::string value;
if (h.saving)
value = FinalClass::encode(finalClass->num);
h & value;
if (!h.saving)
finalClass->num = FinalClass::decode(value);
}
};
template<typename FinalClass, typename BaseClass>
class EntityIdentifierWithEnum : public IdentifierWithEnum<FinalClass, BaseClass>
{
public:
using IdentifierWithEnum<FinalClass, BaseClass>::IdentifierWithEnum;
template <typename Handler>
void serialize(Handler &h)
{
auto * finalClass = static_cast<FinalClass*>(this);
std::string value;
if (h.saving)
value = FinalClass::encode(finalClass->num);
h & value;
if (!h.saving)
finalClass->num = FinalClass::decode(value);
}
};
template<typename FinalClass>
class StaticIdentifier : public Identifier<FinalClass>
{
public:
using Identifier<FinalClass>::Identifier;
template <typename Handler>
void serialize(Handler &h)
{
auto * finalClass = static_cast<FinalClass*>(this);
h & finalClass->num;
}
};
template<typename FinalClass, typename BaseClass>
class StaticIdentifierWithEnum : public IdentifierWithEnum<FinalClass, BaseClass>
{
public:
using IdentifierWithEnum<FinalClass, BaseClass>::IdentifierWithEnum;
template <typename Handler>
void serialize(Handler &h)
{
auto * finalClass = static_cast<FinalClass*>(this);
h & finalClass->num;
}
};
VCMI_LIB_NAMESPACE_END
|
