]>
Commit | Line | Data |
---|---|---|
b4c522fa | 1 | /* imports.cc -- Build imported modules/declarations. |
99dee823 | 2 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
b4c522fa IB |
3 | |
4 | GCC is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3, or (at your option) | |
7 | any later version. | |
8 | ||
9 | GCC is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with GCC; see the file COPYING3. If not see | |
16 | <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include "config.h" | |
19 | #include "system.h" | |
20 | #include "coretypes.h" | |
21 | ||
22 | #include "dmd/aggregate.h" | |
23 | #include "dmd/declaration.h" | |
24 | #include "dmd/enum.h" | |
25 | #include "dmd/identifier.h" | |
26 | #include "dmd/import.h" | |
27 | #include "dmd/module.h" | |
28 | ||
29 | #include "tree.h" | |
30 | #include "stringpool.h" | |
31 | ||
32 | #include "d-tree.h" | |
33 | ||
34 | ||
35 | /* Implements the visitor interface to build debug trees for all | |
36 | module and import declarations, where ISYM holds the cached | |
37 | back-end representation to be returned. */ | |
38 | class ImportVisitor : public Visitor | |
39 | { | |
40 | using Visitor::visit; | |
41 | ||
42 | /* Build the declaration DECL as an imported symbol. */ | |
43 | tree make_import (tree decl) | |
44 | { | |
45 | gcc_assert (decl != NULL_TREE); | |
46 | ||
47 | tree import = build_decl (input_location, IMPORTED_DECL, | |
48 | DECL_NAME (decl), void_type_node); | |
49 | IMPORTED_DECL_ASSOCIATED_DECL (import) = decl; | |
50 | d_keep (import); | |
51 | ||
52 | return import; | |
53 | } | |
54 | ||
55 | public: | |
56 | ImportVisitor (void) | |
57 | { | |
58 | } | |
59 | ||
60 | /* This should be overridden by each symbol class. */ | |
61 | void visit (Dsymbol *) | |
62 | { | |
63 | gcc_unreachable (); | |
64 | } | |
65 | ||
66 | /* Build the module decl for M, this is considered toplevel, regardless | |
67 | of whether there are any parent packages in the module system. */ | |
68 | void visit (Module *m) | |
69 | { | |
70 | Loc loc = (m->md != NULL) ? m->md->loc | |
71 | : Loc (m->srcfile->toChars (), 1, 0); | |
72 | ||
73 | m->isym = build_decl (make_location_t (loc), NAMESPACE_DECL, | |
74 | get_identifier (m->toPrettyChars ()), | |
75 | void_type_node); | |
76 | d_keep (m->isym); | |
77 | ||
78 | if (!m->isRoot ()) | |
79 | DECL_EXTERNAL (m->isym) = 1; | |
80 | ||
81 | TREE_PUBLIC (m->isym) = 1; | |
82 | DECL_CONTEXT (m->isym) = NULL_TREE; | |
83 | } | |
84 | ||
85 | /* Build an import of another module symbol. */ | |
86 | ||
87 | void visit (Import *m) | |
88 | { | |
89 | tree module = build_import_decl (m->mod); | |
90 | m->isym = this->make_import (module); | |
91 | } | |
92 | ||
93 | /* Build an import for any kind of user defined type. | |
94 | Use the TYPE_DECL associated with the type symbol. */ | |
95 | void visit (EnumDeclaration *d) | |
96 | { | |
97 | tree type = build_ctype (d->type); | |
98 | /* Not all kinds of D enums create a TYPE_DECL. */ | |
99 | if (TREE_CODE (type) == ENUMERAL_TYPE) | |
100 | d->isym = this->make_import (TYPE_STUB_DECL (type)); | |
101 | } | |
102 | ||
103 | void visit (AggregateDeclaration *d) | |
104 | { | |
105 | tree type = build_ctype (d->type); | |
106 | d->isym = this->make_import (TYPE_STUB_DECL (type)); | |
107 | } | |
108 | ||
109 | void visit (ClassDeclaration *d) | |
110 | { | |
111 | /* Want the RECORD_TYPE, not POINTER_TYPE. */ | |
112 | tree type = TREE_TYPE (build_ctype (d->type)); | |
113 | d->isym = this->make_import (TYPE_STUB_DECL (type)); | |
114 | } | |
115 | ||
116 | /* For now, ignore importing other kinds of dsymbols. */ | |
117 | void visit (ScopeDsymbol *) | |
118 | { | |
119 | } | |
120 | ||
121 | /* Alias symbols aren't imported, but their targets are. */ | |
122 | void visit (AliasDeclaration *d) | |
123 | { | |
124 | Dsymbol *dsym = d->toAlias (); | |
125 | ||
126 | if (dsym == d) | |
127 | { | |
128 | Type *type = d->getType (); | |
129 | ||
130 | /* Type imports should really be part of their own visit method. */ | |
131 | if (type != NULL) | |
132 | { | |
133 | if (type->ty == Tenum) | |
89fdaf5a | 134 | dsym = type->isTypeEnum ()->sym; |
b4c522fa | 135 | else if (type->ty == Tstruct) |
89fdaf5a | 136 | dsym = type->isTypeStruct ()->sym; |
b4c522fa | 137 | else if (type->ty == Tclass) |
89fdaf5a | 138 | dsym = type->isTypeClass ()->sym; |
b4c522fa IB |
139 | } |
140 | } | |
141 | ||
142 | /* This symbol is really an alias for another, visit the other. */ | |
143 | if (dsym != d) | |
144 | { | |
145 | dsym->accept (this); | |
146 | d->isym = dsym->isym; | |
147 | } | |
148 | } | |
149 | ||
150 | /* Visit the underlying alias symbol of overloadable aliases. */ | |
151 | void visit (OverDeclaration *d) | |
152 | { | |
153 | if (d->aliassym != NULL) | |
154 | { | |
155 | d->aliassym->accept (this); | |
156 | d->isym = d->aliassym->isym; | |
157 | } | |
158 | } | |
159 | ||
160 | /* Function aliases are the same as alias symbols. */ | |
161 | void visit (FuncAliasDeclaration *d) | |
162 | { | |
163 | FuncDeclaration *fd = d->toAliasFunc (); | |
164 | ||
165 | if (fd != NULL) | |
166 | { | |
167 | fd->accept (this); | |
168 | d->isym = fd->isym; | |
169 | } | |
170 | } | |
171 | ||
172 | /* Skip over importing templates and tuples. */ | |
173 | void visit (TemplateDeclaration *) | |
174 | { | |
175 | } | |
176 | ||
177 | void visit (TupleDeclaration *) | |
178 | { | |
179 | } | |
180 | ||
181 | /* Import any other kind of declaration. If the class does not implement | |
182 | symbol generation routines, the compiler will throw an error. */ | |
183 | void visit (Declaration *d) | |
184 | { | |
185 | d->isym = this->make_import (get_symbol_decl (d)); | |
186 | } | |
187 | }; | |
188 | ||
189 | ||
190 | /* Build a declaration for the symbol D that can be used for the | |
191 | debug_hook imported_module_or_decl. */ | |
192 | tree | |
193 | build_import_decl (Dsymbol *d) | |
194 | { | |
195 | if (!d->isym) | |
196 | { | |
197 | location_t saved_location = input_location; | |
198 | ImportVisitor v; | |
199 | ||
200 | input_location = make_location_t (d->loc); | |
201 | d->accept (&v); | |
202 | input_location = saved_location; | |
203 | } | |
204 | ||
cdbf48be | 205 | /* Not all visitors set `isym'. */ |
b4c522fa IB |
206 | return d->isym ? d->isym : NULL_TREE; |
207 | } | |
208 |