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e9cafbcc TT |
1 | /* CLI utilities. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2011-2020 Free Software Foundation, Inc. |
e9cafbcc TT |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
1a5c2598 TT |
20 | #ifndef CLI_CLI_UTILS_H |
21 | #define CLI_CLI_UTILS_H | |
e9cafbcc | 22 | |
60cfcb20 AB |
23 | #include "completer.h" |
24 | ||
25 | struct cmd_list_element; | |
26 | ||
5d5658a1 PA |
27 | /* *PP is a string denoting a number. Get the number. Advance *PP |
28 | after the string and any trailing whitespace. | |
e9cafbcc | 29 | |
5d5658a1 PA |
30 | The string can either be a number, or "$" followed by the name of a |
31 | convenience variable, or ("$" or "$$") followed by digits. | |
32 | ||
33 | TRAILER is a character which can be found after the number; most | |
34 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
35 | ||
36 | extern int get_number_trailer (const char **pp, int trailer); | |
37 | ||
38 | /* Convenience. Like get_number_trailer, but with no TRAILER. */ | |
e9cafbcc | 39 | |
f1735a53 | 40 | extern int get_number (const char **); |
e799154c | 41 | |
f1735a53 | 42 | /* Like the above, but takes a non-const "char **". */ |
e799154c | 43 | |
e9cafbcc TT |
44 | extern int get_number (char **); |
45 | ||
9d0faba9 PA |
46 | /* Like get_number_trailer, but works with ULONGEST, and throws on |
47 | error instead of returning 0. */ | |
48 | extern ULONGEST get_ulongest (const char **pp, int trailer = '\0'); | |
49 | ||
0d4cad90 PW |
50 | /* Throws an error telling the user that ARGS starts with an option |
51 | unrecognized by COMMAND. */ | |
52 | ||
53 | extern void report_unrecognized_option_error (const char *command, | |
54 | const char *args); | |
55 | ||
56 | ||
57 | /* Builds the help string for a command documented by PREFIX, | |
4acfdd20 | 58 | followed by the extract_info_print_args help for ENTITY_KIND. If |
30baf67b | 59 | DOCUMENT_N_FLAG is true then help text describing the -n flag is also |
4acfdd20 | 60 | included. */ |
0d4cad90 PW |
61 | |
62 | const char *info_print_args_help (const char *prefix, | |
4acfdd20 AB |
63 | const char *entity_kind, |
64 | bool document_n_flag); | |
0d4cad90 | 65 | |
bfd28288 PA |
66 | /* Parse a number or a range. |
67 | A number will be of the form handled by get_number. | |
68 | A range will be of the form <number1> - <number2>, and | |
69 | will represent all the integers between number1 and number2, | |
70 | inclusive. */ | |
197f0a60 | 71 | |
bfd28288 | 72 | class number_or_range_parser |
197f0a60 | 73 | { |
bfd28288 PA |
74 | public: |
75 | /* Default construction. Must call init before calling | |
76 | get_next. */ | |
77 | number_or_range_parser () {} | |
78 | ||
79 | /* Calls init automatically. */ | |
80 | number_or_range_parser (const char *string); | |
81 | ||
82 | /* STRING is the string to be parsed. */ | |
83 | void init (const char *string); | |
84 | ||
85 | /* While processing a range, this fuction is called iteratively; At | |
86 | each call it will return the next value in the range. | |
87 | ||
88 | At the beginning of parsing a range, the char pointer | |
89 | STATE->m_cur_tok will be advanced past <number1> and left | |
90 | pointing at the '-' token. Subsequent calls will not advance the | |
91 | pointer until the range is completed. The call that completes | |
92 | the range will advance the pointer past <number2>. */ | |
93 | int get_number (); | |
94 | ||
95 | /* Setup internal state such that get_next() returns numbers in the | |
96 | START_VALUE to END_VALUE range. END_PTR is where the string is | |
97 | advanced to when get_next() returns END_VALUE. */ | |
98 | void setup_range (int start_value, int end_value, | |
99 | const char *end_ptr); | |
100 | ||
101 | /* Returns true if parsing has completed. */ | |
529c08b2 | 102 | bool finished () const; |
bfd28288 PA |
103 | |
104 | /* Return the string being parsed. When parsing has finished, this | |
105 | points past the last parsed token. */ | |
106 | const char *cur_tok () const | |
107 | { return m_cur_tok; } | |
108 | ||
109 | /* True when parsing a range. */ | |
110 | bool in_range () const | |
111 | { return m_in_range; } | |
112 | ||
113 | /* When parsing a range, the final value in the range. */ | |
114 | int end_value () const | |
115 | { return m_end_value; } | |
116 | ||
117 | /* When parsing a range, skip past the final token in the range. */ | |
118 | void skip_range () | |
119 | { | |
120 | gdb_assert (m_in_range); | |
121 | m_cur_tok = m_end_ptr; | |
529c08b2 | 122 | m_in_range = false; |
bfd28288 PA |
123 | } |
124 | ||
125 | private: | |
126 | /* No need for these. They are intentionally not defined anywhere. */ | |
127 | number_or_range_parser (const number_or_range_parser &); | |
128 | number_or_range_parser &operator= (const number_or_range_parser &); | |
129 | ||
197f0a60 TT |
130 | /* The string being parsed. When parsing has finished, this points |
131 | past the last parsed token. */ | |
bfd28288 | 132 | const char *m_cur_tok; |
197f0a60 TT |
133 | |
134 | /* Last value returned. */ | |
bfd28288 | 135 | int m_last_retval; |
197f0a60 TT |
136 | |
137 | /* When parsing a range, the final value in the range. */ | |
bfd28288 | 138 | int m_end_value; |
197f0a60 TT |
139 | |
140 | /* When parsing a range, a pointer past the final token in the | |
141 | range. */ | |
bfd28288 | 142 | const char *m_end_ptr; |
197f0a60 | 143 | |
bfd28288 PA |
144 | /* True when parsing a range. */ |
145 | bool m_in_range; | |
197f0a60 TT |
146 | }; |
147 | ||
aea5b279 MS |
148 | /* Accept a number and a string-form list of numbers such as is |
149 | accepted by get_number_or_range. Return TRUE if the number is | |
150 | in the list. | |
151 | ||
152 | By definition, an empty list includes all numbers. This is to | |
153 | be interpreted as typing a command such as "delete break" with | |
154 | no arguments. */ | |
155 | ||
e799154c | 156 | extern int number_is_in_list (const char *list, int number); |
aea5b279 | 157 | |
c00f8484 KS |
158 | /* Reverse S to the last non-whitespace character without skipping past |
159 | START. */ | |
160 | ||
63160a43 PA |
161 | extern const char *remove_trailing_whitespace (const char *start, |
162 | const char *s); | |
163 | ||
164 | /* Same, for non-const S. */ | |
165 | ||
166 | static inline char * | |
167 | remove_trailing_whitespace (const char *start, char *s) | |
168 | { | |
169 | return (char *) remove_trailing_whitespace (start, (const char *) s); | |
170 | } | |
55aa24fb SDJ |
171 | |
172 | /* A helper function to extract an argument from *ARG. An argument is | |
cb791d59 TT |
173 | delimited by whitespace. The return value is empty if no argument |
174 | was found. */ | |
55aa24fb | 175 | |
cb791d59 | 176 | extern std::string extract_arg (char **arg); |
55aa24fb | 177 | |
cb791d59 | 178 | /* A const-correct version of the above. */ |
b5be8ce0 | 179 | |
cb791d59 | 180 | extern std::string extract_arg (const char **arg); |
b5be8ce0 | 181 | |
e6f0bce7 HZ |
182 | /* A helper function that looks for an argument at the start of a |
183 | string. The argument must also either be at the end of the string, | |
184 | or be followed by whitespace. Returns 1 if it finds the argument, | |
cbba3ecd PA |
185 | 0 otherwise. If the argument is found, it updates *STR to point |
186 | past the argument and past any whitespace following the | |
187 | argument. */ | |
63160a43 PA |
188 | extern int check_for_argument (const char **str, const char *arg, int arg_len); |
189 | ||
9d0faba9 PA |
190 | /* Same as above, but ARG's length is computed. */ |
191 | ||
192 | static inline int | |
193 | check_for_argument (const char **str, const char *arg) | |
194 | { | |
195 | return check_for_argument (str, arg, strlen (arg)); | |
196 | } | |
197 | ||
63160a43 PA |
198 | /* Same, for non-const STR. */ |
199 | ||
200 | static inline int | |
201 | check_for_argument (char **str, const char *arg, int arg_len) | |
202 | { | |
203 | return check_for_argument (const_cast<const char **> (str), | |
204 | arg, arg_len); | |
205 | } | |
e6f0bce7 | 206 | |
9d0faba9 PA |
207 | static inline int |
208 | check_for_argument (char **str, const char *arg) | |
209 | { | |
210 | return check_for_argument (str, arg, strlen (arg)); | |
211 | } | |
212 | ||
5d707134 PA |
213 | /* qcs_flags struct groups the -q, -c, and -s flags parsed by "thread |
214 | apply" and "frame apply" commands */ | |
529c08b2 PW |
215 | |
216 | struct qcs_flags | |
217 | { | |
491144b5 CB |
218 | bool quiet = false; |
219 | bool cont = false; | |
220 | bool silent = false; | |
529c08b2 PW |
221 | }; |
222 | ||
5d707134 PA |
223 | /* Validate FLAGS. Throws an error if both FLAGS->CONT and |
224 | FLAGS->SILENT are true. WHICH_COMMAND is included in the error | |
225 | message. */ | |
226 | extern void validate_flags_qcs (const char *which_command, qcs_flags *flags); | |
227 | ||
1a5c2598 | 228 | #endif /* CLI_CLI_UTILS_H */ |