-
-
Notifications
You must be signed in to change notification settings - Fork 23
Expand file tree
/
Copy pathglobals_impl.cpp
More file actions
299 lines (263 loc) · 7.66 KB
/
globals_impl.cpp
File metadata and controls
299 lines (263 loc) · 7.66 KB
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
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
/* Copyright (c) 2024 Julian Benda
*
* This file is part of inkCPP which is released under MIT license.
* See file LICENSE.txt or go to
* https://github.com/JBenda/inkcpp for full license details.
*/
#include "globals_impl.h"
#include "story_impl.h"
#include "runner_impl.h"
#include "snapshot_impl.h"
#include "system.h"
#include "types.h"
#include "value.h"
namespace ink::runtime::internal
{
globals_impl::globals_impl(const story_impl* story)
: _num_containers(story->num_containers())
, _turn_cnt{0}
, _visit_counts()
, _visit_counts_backup()
, _owner(story)
, _runners_start(nullptr)
, _lists(story->list_meta(), story->get_header())
, _globals_initialized(false)
{
_visit_counts.resize(_num_containers);
_visit_counts_backup.resize(_num_containers);
if (_lists) {
// initialize static lists
const list_flag* flags = story->lists();
while (*flags != null_flag) {
list_table::list l = _lists.create_permament();
while (*flags != null_flag) {
list_flag flag = _lists.external_fvalue_to_internal(*flags);
_lists.add_inplace(l, flag);
++flags;
}
++flags;
}
for (const auto& flag : _lists.named_flags()) {
set_variable(
hash_string(flag.name),
value{}.set<value_type::list_flag>(list_flag{flag.flag.list_id, flag.flag.flag})
);
}
}
}
void globals_impl::visit(uint32_t container_id, bool entering_at_start)
{
if ((! (_owner->container_flag(container_id) & CommandFlag::CONTAINER_MARKER_ONLY_FIRST))
|| entering_at_start) {
_visit_counts[container_id].visits += 1;
_visit_counts[container_id].turns = 0;
}
}
uint32_t globals_impl::visits(uint32_t container_id) const
{
return _visit_counts[container_id].visits;
}
uint32_t globals_impl::turns() const { return _turn_cnt; }
void globals_impl::turn()
{
++_turn_cnt;
for (size_t i = 0; i < _visit_counts.size(); ++i) {
if (_visit_counts[i].turns != -1) {
_visit_counts[i].turns += 1;
}
}
}
uint32_t globals_impl::turns(uint32_t container_id) const
{
return _visit_counts[container_id].turns;
}
void globals_impl::add_runner(const runner_impl* runner)
{
// cache start of list
auto first = _runners_start;
// create new entry as start, linked to the previous start
_runners_start = new runner_entry{runner, first};
}
void globals_impl::remove_runner(const runner_impl* runner)
{
// iterate linked list
runner_entry* prev = nullptr;
auto iter = _runners_start;
while (iter != nullptr) {
if (iter->object == runner) {
// Fixup next pointer
if (prev != nullptr)
prev->next = iter->next;
else
_runners_start = iter->next;
// delete
delete iter;
return;
}
// move on to next entry
prev = iter;
iter = iter->next;
}
}
void globals_impl::set_variable(hash_t name, const value& val)
{
ink::optional<value> old_var = ink::nullopt;
value* p_old_var = get_variable(name);
if (p_old_var != nullptr) {
old_var = *p_old_var;
}
_variables.set(name, val);
for (auto& callback : _callbacks) {
if (callback.name == name) {
if (old_var.has_value()) {
callback.operation->call(
val.to_interface_value(lists()), {old_var->to_interface_value(lists())}
);
} else {
callback.operation->call(val.to_interface_value(lists()), ink::nullopt);
}
}
}
}
const value* globals_impl::get_variable(hash_t name) const { return _variables.get(name); }
value* globals_impl::get_variable(hash_t name) { return _variables.get(name); }
optional<ink::runtime::value> globals_impl::get_var(hash_t name) const
{
auto* var = get_variable(name);
if (! var) {
return nullopt;
}
return {var->to_interface_value(_lists)};
}
bool globals_impl::set_var(hash_t name, const ink::runtime::value& val)
{
auto* var = get_variable(name);
if (! var) {
return false;
}
ink::runtime::value old_val = var->to_interface_value(lists());
bool ret = false;
if (val.type == ink::runtime::value::Type::String) {
if (! (var->type() == value_type::none || var->type() == value_type::string)) {
return false;
}
size_t size = 0;
char* ptr;
for (const char* i = val.get<runtime::value::Type::String>(); *i; ++i) {
++size;
}
char* new_string = strings().create(size + 1);
strings().mark_used(new_string);
ptr = new_string;
for (const char* i = val.get<runtime::value::Type::String>(); *i; ++i) {
*ptr++ = *i;
}
*ptr = 0;
*var = value{}.set<value_type::string>(static_cast<const char*>(new_string), true);
ret = true;
} else {
ret = var->set(val);
}
for (auto& callback : _callbacks) {
if (callback.name == name) {
callback.operation->call(val, {old_val});
}
}
return ret;
}
void globals_impl::internal_observe(hash_t name, callback_base* callback)
{
_callbacks.push() = Callback{name, callback};
if (_globals_initialized) {
value* p_var = _variables.get(name);
inkAssert(
p_var != nullptr,
"Global variable to observe does not exists after initiliazation. This variable will "
"therofe not get any value."
);
callback->call(p_var->to_interface_value(lists()), ink::nullopt);
}
}
void globals_impl::initialize_globals(runner_impl* run)
{
// If no way to move there, then there are no globals.
if (! run->move_to(hash_string("global decl"))) {
_globals_initialized = true;
return;
}
// execute one line to startup the globals
run->getline_silent();
_globals_initialized = true;
}
void globals_impl::gc()
{
// Mark all strings as unused
_strings.clear_usage();
_lists.clear_usage();
// Iterate runners and mark their strings
auto iter = _runners_start;
while (iter != nullptr) {
iter->object->mark_used(_strings, _lists);
iter = iter->next;
}
// Mark our own strings
_variables.mark_used(_strings, _lists);
// run garbage collection
_strings.gc();
_lists.gc();
}
void globals_impl::save()
{
for (uint32_t i = 0; i < _num_containers; ++i) {
_visit_counts_backup[i] = _visit_counts[i];
}
_variables.save();
}
void globals_impl::restore()
{
for (uint32_t i = 0; i < _num_containers; ++i) {
_visit_counts[i] = _visit_counts_backup[i];
}
_variables.restore();
}
void globals_impl::forget() { _variables.forget(); }
snapshot* globals_impl::create_snapshot() const { return new snapshot_impl(*this); }
size_t globals_impl::snap(unsigned char* data, const snapper& snapper) const
{
unsigned char* ptr = data;
inkAssert(_num_containers == _visit_counts.size(), "Should be equal!");
inkAssert(
_globals_initialized,
"Only support snapshot of globals with runner! or you don't need a snapshot for this state"
);
ptr = snap_write(ptr, _turn_cnt, data != nullptr);
ptr += _visit_counts.snap(data ? ptr : nullptr, snapper);
ptr += _visit_counts_backup.snap(data ? ptr : nullptr, snapper);
ptr += _strings.snap(data ? ptr : nullptr, snapper);
ptr += _lists.snap(data ? ptr : nullptr, snapper);
ptr += _variables.snap(data ? ptr : nullptr, snapper);
return static_cast<size_t>(ptr - data);
}
const unsigned char* globals_impl::snap_load(const unsigned char* ptr, const loader& loader)
{
_globals_initialized = true;
ptr = snap_read(ptr, _turn_cnt);
ptr = _visit_counts.snap_load(ptr, loader);
ptr = _visit_counts_backup.snap_load(ptr, loader);
inkAssert(_visit_counts.size() == _visit_counts_backup.size(), "Data inconsitency");
inkAssert(
_num_containers == _visit_counts.size(),
"errer when loading visit counts, story file dont match snapshot!"
);
ptr = _strings.snap_load(ptr, loader);
ptr = _lists.snap_load(ptr, loader);
ptr = _variables.snap_load(ptr, loader);
return ptr;
}
config::statistics::global globals_impl::statistics() const
{
return {
_variables.statistics(), _callbacks.statistics(), _lists.statistics(), _strings.statistics()
};
}
} // namespace ink::runtime::internal