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bae7f79e ILT |
1 | // options.h -- handle command line options for gold -*- C++ -*- |
2 | ||
3 | // Command_line | |
4 | // Holds everything we get from the command line. | |
5 | // General_options (from Command_line::options()) | |
6 | // Options which are not position dependent. | |
7 | // Input_argument (from Command_line::inputs()) | |
8 | // The list of input files, including -l options. | |
9 | // Position_dependent_options (from Input_argument::options()) | |
10 | // Position dependent options which apply to this argument. | |
11 | ||
12 | #ifndef GOLD_OPTIONS_H | |
13 | #define GOLD_OPTIONS_H | |
14 | ||
15 | #include <list> | |
61ba1cf9 | 16 | #include <string> |
92e059d8 | 17 | #include <vector> |
ead1e424 | 18 | #include <cassert> |
bae7f79e | 19 | |
bae7f79e ILT |
20 | namespace gold |
21 | { | |
22 | ||
23 | class Command_line; | |
ead1e424 | 24 | class Input_file_group; |
bae7f79e ILT |
25 | |
26 | namespace options { | |
27 | ||
28 | class Command_line_options; | |
29 | struct One_option; | |
30 | ||
31 | } // End namespace gold::options. | |
32 | ||
33 | // The position independent options which apply to the whole link. | |
34 | // There are a lot of them. | |
35 | ||
36 | class General_options | |
37 | { | |
38 | public: | |
39 | General_options(); | |
40 | ||
41 | // -L: Library search path. | |
42 | typedef std::list<const char*> Dir_list; | |
43 | ||
44 | const Dir_list& | |
45 | search_path() const | |
46 | { return this->search_path_; } | |
47 | ||
61ba1cf9 ILT |
48 | // -o: Output file name. |
49 | const char* | |
50 | output_file_name() const | |
51 | { return this->output_file_name_; } | |
52 | ||
bae7f79e ILT |
53 | // -r: Whether we are doing a relocatable link. |
54 | bool | |
55 | is_relocatable() const | |
56 | { return this->is_relocatable_; } | |
57 | ||
92e059d8 ILT |
58 | // --shared: Whether generating a shared object. |
59 | bool | |
60 | is_shared() const | |
61 | { return this->is_shared_; } | |
62 | ||
bae7f79e ILT |
63 | // --static: Whether doing a static link. |
64 | bool | |
65 | is_static() const | |
66 | { return this->is_static_; } | |
67 | ||
68 | private: | |
69 | friend class Command_line; | |
70 | friend class options::Command_line_options; | |
71 | ||
72 | void | |
73 | add_to_search_path(const char* arg) | |
74 | { this->search_path_.push_back(arg); } | |
75 | ||
61ba1cf9 ILT |
76 | void |
77 | set_output_file_name(const char* arg) | |
78 | { this->output_file_name_ = arg; } | |
79 | ||
bae7f79e ILT |
80 | void |
81 | set_relocatable() | |
82 | { this->is_relocatable_ = true; } | |
83 | ||
92e059d8 ILT |
84 | void |
85 | set_shared() | |
86 | { this->is_shared_ = true; } | |
87 | ||
bae7f79e ILT |
88 | void |
89 | set_static() | |
90 | { this->is_static_ = true; } | |
91 | ||
92 | Dir_list search_path_; | |
61ba1cf9 | 93 | const char* output_file_name_; |
bae7f79e | 94 | bool is_relocatable_; |
92e059d8 | 95 | bool is_shared_; |
bae7f79e ILT |
96 | bool is_static_; |
97 | ||
98 | // Don't copy this structure. | |
99 | General_options(const General_options&); | |
100 | General_options& operator=(const General_options&); | |
101 | }; | |
102 | ||
103 | // The current state of the position dependent options. | |
104 | ||
105 | class Position_dependent_options | |
106 | { | |
107 | public: | |
108 | Position_dependent_options(); | |
109 | ||
110 | // -Bstatic: Whether we are searching for a static archive rather | |
111 | // -than a shared object. | |
112 | bool | |
113 | do_static_search() | |
114 | { return this->do_static_search_; } | |
115 | ||
116 | private: | |
117 | friend class Command_line; | |
118 | friend class options::Command_line_options; | |
119 | ||
120 | void | |
121 | set_static_search() | |
122 | { this->do_static_search_ = true; } | |
123 | ||
124 | void | |
125 | set_dynamic_search() | |
126 | { this->do_static_search_ = false; } | |
127 | ||
128 | bool do_static_search_; | |
129 | }; | |
130 | ||
131 | // A single file or library argument from the command line. | |
132 | ||
ead1e424 | 133 | class Input_file_argument |
bae7f79e ILT |
134 | { |
135 | public: | |
ead1e424 ILT |
136 | Input_file_argument() |
137 | : name_(NULL), is_lib_(false), options_() | |
138 | { } | |
139 | ||
140 | Input_file_argument(const char* name, bool is_lib, | |
141 | const Position_dependent_options& options) | |
61ba1cf9 | 142 | : name_(name), is_lib_(is_lib), options_(options) |
bae7f79e ILT |
143 | { } |
144 | ||
145 | const char* | |
146 | name() const | |
147 | { return this->name_; } | |
148 | ||
149 | const Position_dependent_options& | |
150 | options() const | |
151 | { return this->options_; } | |
152 | ||
153 | bool | |
154 | is_lib() const | |
61ba1cf9 | 155 | { return this->is_lib_; } |
bae7f79e ILT |
156 | |
157 | private: | |
158 | const char* name_; | |
61ba1cf9 | 159 | bool is_lib_; |
bae7f79e ILT |
160 | Position_dependent_options options_; |
161 | }; | |
162 | ||
ead1e424 ILT |
163 | // A file or library, or a group, from the command line. |
164 | ||
165 | class Input_argument | |
166 | { | |
167 | public: | |
168 | // Create a file or library argument. | |
169 | explicit Input_argument(Input_file_argument file) | |
170 | : is_file_(true), file_(file), group_(NULL) | |
171 | { } | |
172 | ||
173 | // Create a group argument. | |
174 | explicit Input_argument(Input_file_group* group) | |
175 | : is_file_(false), group_(group) | |
176 | { } | |
177 | ||
178 | // Return whether this is a file. | |
179 | bool | |
180 | is_file() const | |
181 | { return this->is_file_; } | |
182 | ||
183 | // Return whether this is a group. | |
184 | bool | |
185 | is_group() const | |
186 | { return !this->is_file_; } | |
187 | ||
188 | // Return the information about the file. | |
189 | const Input_file_argument& | |
190 | file() const | |
191 | { | |
192 | assert(this->is_file_); | |
193 | return this->file_; | |
194 | } | |
195 | ||
196 | // Return the information about the group. | |
197 | const Input_file_group* | |
198 | group() const | |
199 | { | |
200 | assert(!this->is_file_); | |
201 | return this->group_; | |
202 | } | |
203 | ||
204 | Input_file_group* | |
205 | group() | |
206 | { | |
207 | assert(!this->is_file_); | |
208 | return this->group_; | |
209 | } | |
210 | ||
211 | private: | |
212 | bool is_file_; | |
213 | Input_file_argument file_; | |
214 | Input_file_group* group_; | |
215 | }; | |
216 | ||
217 | // A group from the command line. This is a set of arguments within | |
218 | // --start-group ... --end-group. | |
219 | ||
220 | class Input_file_group | |
92e059d8 | 221 | { |
ead1e424 ILT |
222 | public: |
223 | typedef std::vector<Input_argument> Files; | |
224 | typedef Files::const_iterator const_iterator; | |
225 | ||
226 | Input_file_group() | |
227 | : files_() | |
228 | { } | |
229 | ||
230 | // Add a file to the end of the group. | |
231 | void | |
232 | add_file(const Input_file_argument& arg) | |
233 | { this->files_.push_back(Input_argument(arg)); } | |
234 | ||
235 | // Iterators to iterate over the group contents. | |
236 | ||
237 | const_iterator | |
238 | begin() const | |
239 | { return this->files_.begin(); } | |
240 | ||
241 | const_iterator | |
242 | end() const | |
243 | { return this->files_.end(); } | |
244 | ||
245 | private: | |
246 | Files files_; | |
92e059d8 ILT |
247 | }; |
248 | ||
bae7f79e ILT |
249 | // All the information read from the command line. |
250 | ||
251 | class Command_line | |
252 | { | |
253 | public: | |
ead1e424 ILT |
254 | typedef std::vector<Input_argument> Input_arguments; |
255 | typedef Input_arguments::const_iterator const_iterator; | |
256 | ||
bae7f79e ILT |
257 | Command_line(); |
258 | ||
259 | // Process the command line options. This will exit with an | |
260 | // appropriate error message if an unrecognized option is seen. | |
261 | void | |
262 | process(int argc, char** argv); | |
263 | ||
61ba1cf9 ILT |
264 | // Handle a -l option. |
265 | int | |
266 | process_l_option(int, char**, char*); | |
267 | ||
ead1e424 ILT |
268 | // Handle a --start-group option. |
269 | void | |
270 | start_group(const char* arg); | |
271 | ||
272 | // Handle a --end-group option. | |
273 | void | |
274 | end_group(const char* arg); | |
275 | ||
61ba1cf9 | 276 | // Get the general options. |
bae7f79e ILT |
277 | const General_options& |
278 | options() const | |
279 | { return this->options_; } | |
280 | ||
ead1e424 ILT |
281 | // Iterators to iterate over the list of input files. |
282 | ||
283 | const_iterator | |
284 | begin() const | |
285 | { return this->inputs_.begin(); } | |
286 | ||
287 | const_iterator | |
288 | end() const | |
289 | { return this->inputs_.end(); } | |
bae7f79e ILT |
290 | |
291 | private: | |
ead1e424 ILT |
292 | Command_line(const Command_line&); |
293 | Command_line& operator=(const Command_line&); | |
294 | ||
295 | // Report usage error. | |
296 | void | |
297 | usage() ATTRIBUTE_NORETURN; | |
298 | void | |
299 | usage(const char* msg, const char* opt) ATTRIBUTE_NORETURN; | |
300 | void | |
301 | usage(const char* msg, char opt) ATTRIBUTE_NORETURN; | |
302 | ||
303 | // Apply a command line option. | |
304 | void | |
305 | apply_option(const gold::options::One_option&, const char*); | |
306 | ||
307 | // Add a file. | |
308 | void | |
309 | add_file(const char* name, bool is_lib); | |
bae7f79e ILT |
310 | |
311 | General_options options_; | |
312 | Position_dependent_options position_options_; | |
ead1e424 ILT |
313 | Input_arguments inputs_; |
314 | bool in_group_; | |
bae7f79e ILT |
315 | }; |
316 | ||
317 | } // End namespace gold. | |
318 | ||
319 | #endif // !defined(GOLD_OPTIONS_H) |