Mercurial > hg > CbC > CbC_gcc
comparison gcc/c-family/c-spellcheck.cc @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children | 1830386684a0 |
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111:04ced10e8804 | 131:84e7813d76e9 |
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1 /* Find near-matches for macros. | |
2 Copyright (C) 2016-2018 Free Software Foundation, Inc. | |
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 #include "config.h" | |
21 #include "system.h" | |
22 #include "coretypes.h" | |
23 #include "tm.h" | |
24 #include "tree.h" | |
25 #include "cpplib.h" | |
26 #include "spellcheck-tree.h" | |
27 #include "c-family/c-spellcheck.h" | |
28 #include "selftest.h" | |
29 | |
30 /* Return true iff STR begin with an underscore and either an uppercase | |
31 letter or another underscore, and is thus, for C and C++, reserved for | |
32 use by the implementation. */ | |
33 | |
34 bool | |
35 name_reserved_for_implementation_p (const char *str) | |
36 { | |
37 if (str[0] != '_') | |
38 return false; | |
39 return (str[1] == '_' || ISUPPER(str[1])); | |
40 } | |
41 | |
42 /* Return true iff HASHNODE is a macro that should be offered as a | |
43 suggestion for a misspelling. */ | |
44 | |
45 static bool | |
46 should_suggest_as_macro_p (cpp_hashnode *hashnode) | |
47 { | |
48 if (!cpp_macro_p (hashnode)) | |
49 return false; | |
50 | |
51 /* Don't suggest names reserved for the implementation, but do | |
52 suggest the builtin macros such as __FILE__, __LINE__ etc. */ | |
53 if (cpp_user_macro_p (hashnode) | |
54 && name_reserved_for_implementation_p ((const char *)hashnode->ident.str)) | |
55 return false; | |
56 | |
57 return true; | |
58 } | |
59 | |
60 /* A callback for cpp_forall_identifiers, for use by best_macro_match's ctor. | |
61 Process HASHNODE and update the best_macro_match instance pointed to be | |
62 USER_DATA. */ | |
63 | |
64 static int | |
65 find_closest_macro_cpp_cb (cpp_reader *, cpp_hashnode *hashnode, | |
66 void *user_data) | |
67 { | |
68 if (!should_suggest_as_macro_p (hashnode)) | |
69 return 1; | |
70 | |
71 best_macro_match *bmm = (best_macro_match *)user_data; | |
72 bmm->consider (hashnode); | |
73 | |
74 /* Keep iterating. */ | |
75 return 1; | |
76 } | |
77 | |
78 /* Constructor for best_macro_match. | |
79 Use find_closest_macro_cpp_cb to find the closest matching macro to | |
80 NAME within distance < best_distance_so_far. */ | |
81 | |
82 best_macro_match::best_macro_match (tree goal, | |
83 edit_distance_t best_distance_so_far, | |
84 cpp_reader *reader) | |
85 : best_match <goal_t, candidate_t> (goal, best_distance_so_far) | |
86 { | |
87 cpp_forall_identifiers (reader, find_closest_macro_cpp_cb, this); | |
88 } | |
89 | |
90 #if CHECKING_P | |
91 | |
92 namespace selftest { | |
93 | |
94 /* Selftests. */ | |
95 | |
96 /* Verify that name_reserved_for_implementation_p is sane. */ | |
97 | |
98 static void | |
99 test_name_reserved_for_implementation_p () | |
100 { | |
101 ASSERT_FALSE (name_reserved_for_implementation_p ("")); | |
102 ASSERT_FALSE (name_reserved_for_implementation_p ("foo")); | |
103 ASSERT_FALSE (name_reserved_for_implementation_p ("_")); | |
104 ASSERT_FALSE (name_reserved_for_implementation_p ("_foo")); | |
105 ASSERT_FALSE (name_reserved_for_implementation_p ("_42")); | |
106 ASSERT_TRUE (name_reserved_for_implementation_p ("_Foo")); | |
107 ASSERT_TRUE (name_reserved_for_implementation_p ("__")); | |
108 ASSERT_TRUE (name_reserved_for_implementation_p ("__foo")); | |
109 } | |
110 | |
111 /* Run all of the selftests within this file. */ | |
112 | |
113 void | |
114 c_spellcheck_cc_tests () | |
115 { | |
116 test_name_reserved_for_implementation_p (); | |
117 } | |
118 | |
119 } // namespace selftest | |
120 | |
121 #endif /* #if CHECKING_P */ |