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ebedc9a3 | 1 | /* Declarations relating to class gcc_rich_location |
7adcbafe | 2 | Copyright (C) 2014-2022 Free Software Foundation, Inc. |
ebedc9a3 DM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef GCC_RICH_LOCATION_H | |
21 | #define GCC_RICH_LOCATION_H | |
22 | ||
23 | /* A gcc_rich_location is libcpp's rich_location with additional | |
e4d2305a MS |
24 | helper methods for working with gcc's types. The class is not |
25 | copyable or assignable because rich_location isn't. */ | |
26 | ||
ebedc9a3 DM |
27 | class gcc_rich_location : public rich_location |
28 | { | |
29 | public: | |
30 | /* Constructors. */ | |
31 | ||
32 | /* Constructing from a location. */ | |
e4d2305a | 33 | explicit gcc_rich_location (location_t loc, const range_label *label = NULL) |
96e6ae57 DM |
34 | : rich_location (line_table, loc, label) |
35 | { | |
36 | } | |
ebedc9a3 | 37 | |
ebedc9a3 DM |
38 | /* Methods for adding ranges via gcc entities. */ |
39 | void | |
96e6ae57 | 40 | add_expr (tree expr, range_label *label); |
ebedc9a3 DM |
41 | |
42 | void | |
96e6ae57 | 43 | maybe_add_expr (tree t, range_label *label); |
264757fb DM |
44 | |
45 | void add_fixit_misspelled_id (location_t misspelled_token_loc, | |
46 | tree hint_id); | |
a1063153 DM |
47 | |
48 | /* If LOC is within the spans of lines that will already be printed for | |
49 | this gcc_rich_location, then add it as a secondary location | |
50 | and return true. | |
51 | ||
52 | Otherwise return false. | |
53 | ||
54 | This allows for a diagnostic to compactly print secondary locations | |
55 | in one diagnostic when these are near enough the primary locations for | |
56 | diagnostics-show-locus.c to cope with them, and to fall back to | |
57 | printing them via a note otherwise e.g.: | |
58 | ||
59 | gcc_rich_location richloc (primary_loc); | |
60 | bool added secondary = richloc.add_location_if_nearby (secondary_loc); | |
95baaced | 61 | error_at (&richloc, "main message"); |
a1063153 DM |
62 | if (!added secondary) |
63 | inform (secondary_loc, "message for secondary"); | |
64 | ||
65 | Implemented in diagnostic-show-locus.c. */ | |
66 | ||
4bc1899b DM |
67 | bool add_location_if_nearby (location_t loc, |
68 | bool restrict_to_current_line_spans = true, | |
69 | const range_label *label = NULL); | |
1a3a7b4e DM |
70 | |
71 | /* Add a fix-it hint suggesting the insertion of CONTENT before | |
72 | INSERTION_POINT. | |
73 | ||
74 | Attempt to handle formatting: if INSERTION_POINT is the first thing on | |
75 | its line, and INDENT is sufficiently sane, then add CONTENT on its own | |
76 | line, using the indentation of INDENT. | |
77 | Otherwise, add CONTENT directly before INSERTION_POINT. | |
78 | ||
79 | For example, adding "CONTENT;" with the closing brace as the insertion | |
80 | point and using "INDENT;" for indentation: | |
81 | ||
82 | if () | |
83 | { | |
84 | INDENT; | |
85 | } | |
86 | ||
87 | would lead to: | |
88 | ||
89 | if () | |
90 | { | |
91 | INDENT; | |
92 | CONTENT; | |
93 | } | |
94 | ||
95 | but adding it to: | |
96 | ||
97 | if () {INDENT;} | |
98 | ||
99 | would lead to: | |
100 | ||
101 | if () {INDENT;CONTENT;} | |
102 | */ | |
103 | void add_fixit_insert_formatted (const char *content, | |
104 | location_t insertion_point, | |
105 | location_t indent); | |
ebedc9a3 DM |
106 | }; |
107 | ||
96e6ae57 DM |
108 | /* Concrete subclass of libcpp's range_label. |
109 | Simple implementation using a string literal. */ | |
110 | ||
111 | class text_range_label : public range_label | |
112 | { | |
113 | public: | |
114 | text_range_label (const char *text) : m_text (text) {} | |
115 | ||
9c4a4b3c | 116 | label_text get_text (unsigned /*range_idx*/) const FINAL OVERRIDE |
96e6ae57 | 117 | { |
d68f5d45 | 118 | return label_text::borrow (m_text); |
96e6ae57 DM |
119 | } |
120 | ||
121 | private: | |
122 | const char *m_text; | |
123 | }; | |
124 | ||
125 | /* Concrete subclass of libcpp's range_label for use in | |
126 | diagnostics involving mismatched types. | |
127 | ||
128 | Each frontend that uses this should supply its own implementation. | |
129 | ||
130 | Generate a label describing LABELLED_TYPE. The frontend may use | |
131 | OTHER_TYPE where appropriate for highlighting the differences between | |
132 | the two types (analogous to C++'s use of %H and %I with | |
133 | template types). | |
134 | ||
135 | Either or both of LABELLED_TYPE and OTHER_TYPE may be NULL_TREE. | |
136 | If LABELLED_TYPE is NULL_TREE, then there is no label. | |
137 | ||
138 | For example, this rich_location could use two instances of | |
139 | range_label_for_type_mismatch: | |
140 | ||
141 | printf ("arg0: %i arg1: %s arg2: %i", | |
142 | ^~ | |
143 | | | |
144 | const char * | |
145 | 100, 101, 102); | |
146 | ~~~ | |
147 | | | |
148 | int | |
149 | ||
150 | (a) the label for "%s" with LABELLED_TYPE for "const char*" and | |
151 | (b) the label for "101" with LABELLED TYPE for "int" | |
152 | where each one uses the other's type as OTHER_TYPE. */ | |
153 | ||
154 | class range_label_for_type_mismatch : public range_label | |
155 | { | |
156 | public: | |
157 | range_label_for_type_mismatch (tree labelled_type, tree other_type) | |
158 | : m_labelled_type (labelled_type), m_other_type (other_type) | |
159 | { | |
160 | } | |
161 | ||
9c4a4b3c | 162 | label_text get_text (unsigned range_idx) const OVERRIDE; |
96e6ae57 DM |
163 | |
164 | protected: | |
165 | tree m_labelled_type; | |
166 | tree m_other_type; | |
167 | }; | |
168 | ||
a14feb3c DM |
169 | /* Subclass of range_label for labelling the type of EXPR when reporting |
170 | a type mismatch between EXPR and OTHER_EXPR. | |
171 | Either or both of EXPR and OTHER_EXPR could be NULL. */ | |
172 | ||
173 | class maybe_range_label_for_tree_type_mismatch : public range_label | |
174 | { | |
175 | public: | |
176 | maybe_range_label_for_tree_type_mismatch (tree expr, tree other_expr) | |
177 | : m_expr (expr), m_other_expr (other_expr) | |
178 | { | |
179 | } | |
180 | ||
181 | label_text get_text (unsigned range_idx) const FINAL OVERRIDE; | |
182 | ||
183 | private: | |
184 | tree m_expr; | |
185 | tree m_other_expr; | |
186 | }; | |
187 | ||
99b1c316 | 188 | class op_location_t; |
a14feb3c DM |
189 | |
190 | /* A subclass of rich_location for showing problems with binary operations. | |
191 | ||
192 | If enough location information is available, the ctor will make a | |
193 | 3-location rich_location of the form: | |
194 | ||
195 | arg_0 op arg_1 | |
196 | ~~~~~ ^~ ~~~~~ | |
197 | | | | |
198 | | arg1 type | |
199 | arg0 type | |
200 | ||
201 | labelling the types of the arguments if SHOW_TYPES is true. | |
202 | ||
203 | Otherwise, it will fall back to a 1-location rich_location using the | |
204 | compound location within LOC: | |
205 | ||
206 | arg_0 op arg_1 | |
207 | ~~~~~~^~~~~~~~ | |
208 | ||
209 | for which we can't label the types. */ | |
210 | ||
211 | class binary_op_rich_location : public gcc_rich_location | |
212 | { | |
213 | public: | |
214 | binary_op_rich_location (const op_location_t &loc, | |
215 | tree arg0, tree arg1, | |
216 | bool show_types); | |
217 | ||
218 | private: | |
219 | static bool use_operator_loc_p (const op_location_t &loc, | |
220 | tree arg0, tree arg1); | |
221 | ||
222 | maybe_range_label_for_tree_type_mismatch m_label_for_arg0; | |
223 | maybe_range_label_for_tree_type_mismatch m_label_for_arg1; | |
224 | }; | |
225 | ||
ebedc9a3 | 226 | #endif /* GCC_RICH_LOCATION_H */ |