forked from panda3d/panda3d
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcppTypedefType.cxx
More file actions
452 lines (394 loc) · 10.5 KB
/
cppTypedefType.cxx
File metadata and controls
452 lines (394 loc) · 10.5 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
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file cppTypedefType.cxx
* @author rdb
* @date 2014-08-01
*/
#include "cppTypedefType.h"
#include "cppIdentifier.h"
#include "cppInstanceIdentifier.h"
#include "cppTemplateScope.h"
#include "indent.h"
using std::string;
/**
*
*/
CPPTypedefType::
CPPTypedefType(CPPType *type, const string &name, CPPScope *current_scope) :
CPPType(CPPFile()),
_type(type),
_ident(new CPPIdentifier(name)),
_using(false)
{
if (_ident != nullptr) {
_ident->_native_scope = current_scope;
}
_subst_decl_recursive_protect = false;
// assert(_type != NULL); if (global) { _type->_typedefs.push_back(this);
// CPPType::record_alt_name_for(_type, inst->get_local_name()); }
}
/**
*
*/
CPPTypedefType::
CPPTypedefType(CPPType *type, CPPIdentifier *ident, CPPScope *current_scope) :
CPPType(CPPFile()),
_type(type),
_ident(ident),
_using(false)
{
if (_ident != nullptr) {
_ident->_native_scope = current_scope;
}
_subst_decl_recursive_protect = false;
}
/**
* Constructs a new CPPTypedefType object that defines a typedef to the
* indicated type according to the type and the InstanceIdentifier. The
* InstanceIdentifier pointer is deallocated.
*/
CPPTypedefType::
CPPTypedefType(CPPType *type, CPPInstanceIdentifier *ii,
CPPScope *current_scope, const CPPFile &file) :
CPPType(file),
_using(false)
{
assert(ii != nullptr);
_type = ii->unroll_type(type);
_ident = ii->_ident;
ii->_ident = nullptr;
delete ii;
if (_ident != nullptr) {
_ident->_native_scope = current_scope;
}
_subst_decl_recursive_protect = false;
}
/**
*
*/
bool CPPTypedefType::
is_scoped() const {
if (_ident == nullptr) {
return false;
} else {
return _ident->is_scoped();
}
}
/**
*
*/
CPPScope *CPPTypedefType::
get_scope(CPPScope *current_scope, CPPScope *global_scope,
CPPPreprocessor *error_sink) const {
if (_ident == nullptr) {
return current_scope;
} else {
return _ident->get_scope(current_scope, global_scope, error_sink);
}
}
/**
*
*/
string CPPTypedefType::
get_simple_name() const {
if (_ident == nullptr) {
return "";
}
return _ident->get_simple_name();
}
/**
*
*/
string CPPTypedefType::
get_local_name(CPPScope *scope) const {
if (_ident == nullptr) {
return "";
}
return _ident->get_local_name(scope);
}
/**
*
*/
string CPPTypedefType::
get_fully_scoped_name() const {
if (_ident == nullptr) {
return "";
}
return _ident->get_fully_scoped_name();
}
/**
* Returns true if the type has not yet been fully specified, false if it has.
*/
bool CPPTypedefType::
is_incomplete() const {
return false;
// return _type->is_incomplete();
}
/**
* Returns true if the type, or any nested type within the type, is a
* CPPTBDType and thus isn't fully determined right now. In this case,
* calling resolve_type() may or may not resolve the type.
*/
bool CPPTypedefType::
is_tbd() const {
if (_ident != nullptr && _ident->is_tbd()) {
return true;
}
return _type->is_tbd();
}
/**
* Returns true if the type is considered a fundamental type.
*/
bool CPPTypedefType::
is_fundamental() const {
return _type->is_fundamental();
}
/**
* Returns true if the type is considered a standard layout type.
*/
bool CPPTypedefType::
is_standard_layout() const {
return _type->is_standard_layout();
}
/**
* Returns true if the type is considered a Plain Old Data (POD) type.
*/
bool CPPTypedefType::
is_trivial() const {
return _type->is_trivial();
}
/**
* Returns true if the type can be constructed using the given argument.
*/
bool CPPTypedefType::
is_constructible(const CPPType *given_type) const {
return _type->is_constructible(given_type);
}
/**
* Returns true if the type is default-constructible.
*/
bool CPPTypedefType::
is_default_constructible() const {
return _type->is_default_constructible();
}
/**
* Returns true if the type is copy-constructible.
*/
bool CPPTypedefType::
is_copy_constructible() const {
return _type->is_copy_constructible();
}
/**
* Returns true if the type is copy-assignable.
*/
bool CPPTypedefType::
is_copy_assignable() const {
return _type->is_copy_assignable();
}
/**
* Returns true if the type is destructible.
*/
bool CPPTypedefType::
is_destructible() const {
return _type->is_destructible();
}
/**
* Returns true if this declaration is an actual, factual declaration, or
* false if some part of the declaration depends on a template parameter which
* has not yet been instantiated.
*/
bool CPPTypedefType::
is_fully_specified() const {
if (_ident != nullptr && !_ident->is_fully_specified()) {
return false;
}
return CPPDeclaration::is_fully_specified() &&
_type->is_fully_specified();
}
/**
*
*/
CPPDeclaration *CPPTypedefType::
instantiate(const CPPTemplateParameterList *actual_params,
CPPScope *current_scope, CPPScope *global_scope,
CPPPreprocessor *error_sink) const {
return _type->instantiate(actual_params, current_scope, global_scope, error_sink);
}
/**
*
*/
CPPDeclaration *CPPTypedefType::
substitute_decl(CPPDeclaration::SubstDecl &subst,
CPPScope *current_scope, CPPScope *global_scope) {
if (_ident != nullptr && _ident->get_scope(current_scope, global_scope) == global_scope) {
// Hack... I know that size_t etc is supposed to work fine, so preserve
// these top-level typedefs.
CPPDeclaration *top =
CPPType::substitute_decl(subst, current_scope, global_scope);
if (top != this) {
return top;
}
top = new CPPTypedefType(*this);
subst.insert(SubstDecl::value_type(this, top));
return top;
}
return _type->substitute_decl(subst, current_scope, global_scope);
// Bah, this doesn't seem to work, and I can't figure out why. Well, for
// now, let's just substitute it with the type we're pointing to. This is
// not a huge deal for now, until we find that we need to preserve these
// typedefs.
/*
CPPDeclaration *top =
CPPType::substitute_decl(subst, current_scope, global_scope);
if (top != this) {
return top;
}
if (_subst_decl_recursive_protect) {
// We're already executing this block; we'll have to return a proxy to the
// type which we'll define later.
CPPTypeProxy *proxy = new CPPTypeProxy;
_proxies.push_back(proxy);
assert(proxy != NULL);
return proxy;
}
_subst_decl_recursive_protect = true;
CPPTypedefType *rep = new CPPTypedefType(*this);
CPPDeclaration *new_type =
_type->substitute_decl(subst, current_scope, global_scope);
rep->_type = new_type->as_type();
if (rep->_type == NULL) {
rep->_type = _type;
}
if (_ident != NULL) {
rep->_ident =
_ident->substitute_decl(subst, current_scope, global_scope);
}
if (rep->_type == _type && rep->_ident == _ident) {
delete rep;
rep = this;
}
rep = CPPType::new_type(rep)->as_typedef_type();
subst.insert(SubstDecl::value_type(this, rep));
_subst_decl_recursive_protect = false;
// Now fill in all the proxies we created for our recursive references.
Proxies::iterator pi;
for (pi = _proxies.begin(); pi != _proxies.end(); ++pi) {
(*pi)->_actual_type = rep;
}
return rep; */
}
/**
* If this CPPType object is a forward reference or other nonspecified
* reference to a type that might now be known a real type, returns the real
* type. Otherwise returns the type itself.
*/
CPPType *CPPTypedefType::
resolve_type(CPPScope *current_scope, CPPScope *global_scope) {
CPPType *ptype = _type->resolve_type(current_scope, global_scope);
if (ptype != _type) {
CPPTypedefType *rep = new CPPTypedefType(*this);
rep->_type = ptype;
return CPPType::new_type(rep);
}
return this;
}
/**
* Returns true if variables of this type may be implicitly converted to
* the other type.
*/
bool CPPTypedefType::
is_convertible_to(const CPPType *other) const {
return _type->is_convertible_to(other);
}
/**
* This is a little more forgiving than is_equal(): it returns true if the
* types appear to be referring to the same thing, even if they may have
* different pointers or somewhat different definitions. It's useful for
* parameter matching, etc.
*/
bool CPPTypedefType::
is_equivalent(const CPPType &other) const {
CPPType *ot = (CPPType *)&other;
// Unwrap all the typedefs to get to where it is pointing.
while (ot->get_subtype() == ST_typedef) {
ot = ot->as_typedef_type()->_type;
}
// Compare the unwrapped type to what we are pointing to. If we are
// pointing to a typedef ourselves, then this will automatically recurse.
return _type->is_equivalent(*ot);
}
/**
*
*/
void CPPTypedefType::
output(std::ostream &out, int indent_level, CPPScope *scope, bool complete) const {
string name;
if (_ident != nullptr) {
name = _ident->get_local_name(scope);
}
if (complete) {
if (_using) {
// It was declared using the "using" keyword.
if (is_template()) {
get_template_scope()->_parameters.write_formal(out, scope);
indent(out, indent_level);
}
out << "using " << name << " = ";
_type->output(out, 0, scope, false);
} else {
out << "typedef ";
_type->output_instance(out, indent_level, scope, false, "", name);
}
} else {
out << name;
}
}
/**
*
*/
CPPDeclaration::SubType CPPTypedefType::
get_subtype() const {
return ST_typedef;
}
/**
*
*/
CPPTypedefType *CPPTypedefType::
as_typedef_type() {
return this;
}
/**
* Called by CPPDeclaration() to determine whether this type is equivalent to
* another type of the same type.
*/
bool CPPTypedefType::
is_equal(const CPPDeclaration *other) const {
const CPPTypedefType *ot = ((CPPDeclaration *)other)->as_typedef_type();
assert(ot != nullptr);
return (*_type == *ot->_type) && (*_ident == *ot->_ident) && (_using == ot->_using);
}
/**
* Called by CPPDeclaration() to determine whether this type should be ordered
* before another type of the same type, in an arbitrary but fixed ordering.
*/
bool CPPTypedefType::
is_less(const CPPDeclaration *other) const {
return CPPDeclaration::is_less(other);
// The below code causes a crash for unknown reasons.
/*
const CPPTypedefType *ot = ((CPPDeclaration *)other)->as_typedef_type();
assert(ot != NULL);
if (_type != ot->_type) {
return _type < ot->_type;
}
if (*_ident != *ot->_ident) {
return *_ident < *ot->_ident;
}
return false; */
}