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
|
/* imports.cc -- Build imported modules/declarations.
Copyright (C) 2014-2018 Free Software Foundation, Inc.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "dmd/aggregate.h"
#include "dmd/declaration.h"
#include "dmd/enum.h"
#include "dmd/identifier.h"
#include "dmd/import.h"
#include "dmd/module.h"
#include "tree.h"
#include "stringpool.h"
#include "d-tree.h"
/* Implements the visitor interface to build debug trees for all
module and import declarations, where ISYM holds the cached
back-end representation to be returned. */
class ImportVisitor : public Visitor
{
using Visitor::visit;
/* Build the declaration DECL as an imported symbol. */
tree make_import (tree decl)
{
gcc_assert (decl != NULL_TREE);
tree import = build_decl (input_location, IMPORTED_DECL,
DECL_NAME (decl), void_type_node);
IMPORTED_DECL_ASSOCIATED_DECL (import) = decl;
d_keep (import);
return import;
}
public:
ImportVisitor (void)
{
}
/* This should be overridden by each symbol class. */
void visit (Dsymbol *)
{
gcc_unreachable ();
}
/* Build the module decl for M, this is considered toplevel, regardless
of whether there are any parent packages in the module system. */
void visit (Module *m)
{
Loc loc = (m->md != NULL) ? m->md->loc
: Loc (m->srcfile->toChars (), 1, 0);
m->isym = build_decl (make_location_t (loc), NAMESPACE_DECL,
get_identifier (m->toPrettyChars ()),
void_type_node);
d_keep (m->isym);
if (!m->isRoot ())
DECL_EXTERNAL (m->isym) = 1;
TREE_PUBLIC (m->isym) = 1;
DECL_CONTEXT (m->isym) = NULL_TREE;
}
/* Build an import of another module symbol. */
void visit (Import *m)
{
tree module = build_import_decl (m->mod);
m->isym = this->make_import (module);
}
/* Build an import for any kind of user defined type.
Use the TYPE_DECL associated with the type symbol. */
void visit (EnumDeclaration *d)
{
tree type = build_ctype (d->type);
/* Not all kinds of D enums create a TYPE_DECL. */
if (TREE_CODE (type) == ENUMERAL_TYPE)
d->isym = this->make_import (TYPE_STUB_DECL (type));
}
void visit (AggregateDeclaration *d)
{
tree type = build_ctype (d->type);
d->isym = this->make_import (TYPE_STUB_DECL (type));
}
void visit (ClassDeclaration *d)
{
/* Want the RECORD_TYPE, not POINTER_TYPE. */
tree type = TREE_TYPE (build_ctype (d->type));
d->isym = this->make_import (TYPE_STUB_DECL (type));
}
/* For now, ignore importing other kinds of dsymbols. */
void visit (ScopeDsymbol *)
{
}
/* Alias symbols aren't imported, but their targets are. */
void visit (AliasDeclaration *d)
{
Dsymbol *dsym = d->toAlias ();
if (dsym == d)
{
Type *type = d->getType ();
/* Type imports should really be part of their own visit method. */
if (type != NULL)
{
if (type->ty == Tenum)
dsym = ((TypeEnum *) type)->sym;
else if (type->ty == Tstruct)
dsym = ((TypeStruct *) type)->sym;
else if (type->ty == Tclass)
dsym = ((TypeClass *) type)->sym;
}
}
/* This symbol is really an alias for another, visit the other. */
if (dsym != d)
{
dsym->accept (this);
d->isym = dsym->isym;
}
}
/* Visit the underlying alias symbol of overloadable aliases. */
void visit (OverDeclaration *d)
{
if (d->aliassym != NULL)
{
d->aliassym->accept (this);
d->isym = d->aliassym->isym;
}
}
/* Function aliases are the same as alias symbols. */
void visit (FuncAliasDeclaration *d)
{
FuncDeclaration *fd = d->toAliasFunc ();
if (fd != NULL)
{
fd->accept (this);
d->isym = fd->isym;
}
}
/* Skip over importing templates and tuples. */
void visit (TemplateDeclaration *)
{
}
void visit (TupleDeclaration *)
{
}
/* Import any other kind of declaration. If the class does not implement
symbol generation routines, the compiler will throw an error. */
void visit (Declaration *d)
{
d->isym = this->make_import (get_symbol_decl (d));
}
};
/* Build a declaration for the symbol D that can be used for the
debug_hook imported_module_or_decl. */
tree
build_import_decl (Dsymbol *d)
{
if (!d->isym)
{
location_t saved_location = input_location;
ImportVisitor v;
input_location = make_location_t (d->loc);
d->accept (&v);
input_location = saved_location;
}
/* Not all visitors set 'isym'. */
return d->isym ? d->isym : NULL_TREE;
}
|
