/
MisleadingIdentifier.cpp
162 lines (150 loc) · 8.83 KB
/
MisleadingIdentifier.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
//===--- MisleadingIdentifier.cpp - clang-tidy-----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "MisleadingIdentifier.h"
#include "clang/Frontend/CompilerInstance.h"
#include "llvm/Support/ConvertUTF.h"
namespace clang::tidy::misc {
// See https://www.unicode.org/Public/14.0.0/ucd/extracted/DerivedBidiClass.txt
static bool isUnassignedAL(llvm::UTF32 CP) {
return (0x0600 <= CP && CP <= 0x07BF) || (0x0860 <= CP && CP <= 0x08FF) ||
(0xFB50 <= CP && CP <= 0xFDCF) || (0xFDF0 <= CP && CP <= 0xFDFF) ||
(0xFE70 <= CP && CP <= 0xFEFF) ||
(0x00010D00 <= CP && CP <= 0x00010D3F) ||
(0x00010F30 <= CP && CP <= 0x00010F6F) ||
(0x0001EC70 <= CP && CP <= 0x0001ECBF) ||
(0x0001ED00 <= CP && CP <= 0x0001ED4F) ||
(0x0001EE00 <= CP && CP <= 0x0001EEFF);
}
// See https://www.unicode.org/Public/14.0.0/ucd/extracted/DerivedBidiClass.txt
static bool isUnassignedR(llvm::UTF32 CP) {
return (0x0590 <= CP && CP <= 0x05FF) || (0x07C0 <= CP && CP <= 0x085F) ||
(0xFB1D <= CP && CP <= 0xFB4F) ||
(0x00010800 <= CP && CP <= 0x00010CFF) ||
(0x00010D40 <= CP && CP <= 0x00010F2F) ||
(0x00010F70 <= CP && CP <= 0x00010FFF) ||
(0x0001E800 <= CP && CP <= 0x0001EC6F) ||
(0x0001ECC0 <= CP && CP <= 0x0001ECFF) ||
(0x0001ED50 <= CP && CP <= 0x0001EDFF) ||
(0x0001EF00 <= CP && CP <= 0x0001EFFF);
}
// See https://www.unicode.org/Public/14.0.0/ucd/extracted/DerivedBidiClass.txt
static bool isR(llvm::UTF32 CP) {
return (CP == 0x0590) || (CP == 0x05BE) || (CP == 0x05C0) || (CP == 0x05C3) ||
(CP == 0x05C6) || (0x05C8 <= CP && CP <= 0x05CF) ||
(0x05D0 <= CP && CP <= 0x05EA) || (0x05EB <= CP && CP <= 0x05EE) ||
(0x05EF <= CP && CP <= 0x05F2) || (0x05F3 <= CP && CP <= 0x05F4) ||
(0x05F5 <= CP && CP <= 0x05FF) || (0x07C0 <= CP && CP <= 0x07C9) ||
(0x07CA <= CP && CP <= 0x07EA) || (0x07F4 <= CP && CP <= 0x07F5) ||
(CP == 0x07FA) || (0x07FB <= CP && CP <= 0x07FC) ||
(0x07FE <= CP && CP <= 0x07FF) || (0x0800 <= CP && CP <= 0x0815) ||
(CP == 0x081A) || (CP == 0x0824) || (CP == 0x0828) ||
(0x082E <= CP && CP <= 0x082F) || (0x0830 <= CP && CP <= 0x083E) ||
(CP == 0x083F) || (0x0840 <= CP && CP <= 0x0858) ||
(0x085C <= CP && CP <= 0x085D) || (CP == 0x085E) || (CP == 0x085F) ||
(CP == 0x200F) || (CP == 0xFB1D) || (0xFB1F <= CP && CP <= 0xFB28) ||
(0xFB2A <= CP && CP <= 0xFB36) || (CP == 0xFB37) ||
(0xFB38 <= CP && CP <= 0xFB3C) || (CP == 0xFB3D) || (CP == 0xFB3E) ||
(CP == 0xFB3F) || (0xFB40 <= CP && CP <= 0xFB41) || (CP == 0xFB42) ||
(0xFB43 <= CP && CP <= 0xFB44) || (CP == 0xFB45) ||
(0xFB46 <= CP && CP <= 0xFB4F) || (0x10800 <= CP && CP <= 0x10805) ||
(0x10806 <= CP && CP <= 0x10807) || (CP == 0x10808) ||
(CP == 0x10809) || (0x1080A <= CP && CP <= 0x10835) ||
(CP == 0x10836) || (0x10837 <= CP && CP <= 0x10838) ||
(0x10839 <= CP && CP <= 0x1083B) || (CP == 0x1083C) ||
(0x1083D <= CP && CP <= 0x1083E) || (0x1083F <= CP && CP <= 0x10855) ||
(CP == 0x10856) || (CP == 0x10857) ||
(0x10858 <= CP && CP <= 0x1085F) || (0x10860 <= CP && CP <= 0x10876) ||
(0x10877 <= CP && CP <= 0x10878) || (0x10879 <= CP && CP <= 0x1087F) ||
(0x10880 <= CP && CP <= 0x1089E) || (0x1089F <= CP && CP <= 0x108A6) ||
(0x108A7 <= CP && CP <= 0x108AF) || (0x108B0 <= CP && CP <= 0x108DF) ||
(0x108E0 <= CP && CP <= 0x108F2) || (CP == 0x108F3) ||
(0x108F4 <= CP && CP <= 0x108F5) || (0x108F6 <= CP && CP <= 0x108FA) ||
(0x108FB <= CP && CP <= 0x108FF) || (0x10900 <= CP && CP <= 0x10915) ||
(0x10916 <= CP && CP <= 0x1091B) || (0x1091C <= CP && CP <= 0x1091E) ||
(0x10920 <= CP && CP <= 0x10939) || (0x1093A <= CP && CP <= 0x1093E) ||
(CP == 0x1093F) || (0x10940 <= CP && CP <= 0x1097F) ||
(0x10980 <= CP && CP <= 0x109B7) || (0x109B8 <= CP && CP <= 0x109BB) ||
(0x109BC <= CP && CP <= 0x109BD) || (0x109BE <= CP && CP <= 0x109BF) ||
(0x109C0 <= CP && CP <= 0x109CF) || (0x109D0 <= CP && CP <= 0x109D1) ||
(0x109D2 <= CP && CP <= 0x109FF) || (CP == 0x10A00) ||
(CP == 0x10A04) || (0x10A07 <= CP && CP <= 0x10A0B) ||
(0x10A10 <= CP && CP <= 0x10A13) || (CP == 0x10A14) ||
(0x10A15 <= CP && CP <= 0x10A17) || (CP == 0x10A18) ||
(0x10A19 <= CP && CP <= 0x10A35) || (0x10A36 <= CP && CP <= 0x10A37) ||
(0x10A3B <= CP && CP <= 0x10A3E) || (0x10A40 <= CP && CP <= 0x10A48) ||
(0x10A49 <= CP && CP <= 0x10A4F) || (0x10A50 <= CP && CP <= 0x10A58) ||
(0x10A59 <= CP && CP <= 0x10A5F) || (0x10A60 <= CP && CP <= 0x10A7C) ||
(0x10A7D <= CP && CP <= 0x10A7E) || (CP == 0x10A7F) ||
(0x10A80 <= CP && CP <= 0x10A9C) || (0x10A9D <= CP && CP <= 0x10A9F) ||
(0x10AA0 <= CP && CP <= 0x10ABF) || (0x10AC0 <= CP && CP <= 0x10AC7) ||
(CP == 0x10AC8) || (0x10AC9 <= CP && CP <= 0x10AE4) ||
(0x10AE7 <= CP && CP <= 0x10AEA) || (0x10AEB <= CP && CP <= 0x10AEF) ||
(0x10AF0 <= CP && CP <= 0x10AF6) || (0x10AF7 <= CP && CP <= 0x10AFF) ||
(0x10B00 <= CP && CP <= 0x10B35) || (0x10B36 <= CP && CP <= 0x10B38) ||
(0x10B40 <= CP && CP <= 0x10B55) || (0x10B56 <= CP && CP <= 0x10B57) ||
(0x10B58 <= CP && CP <= 0x10B5F) || (0x10B60 <= CP && CP <= 0x10B72) ||
(0x10B73 <= CP && CP <= 0x10B77) || (0x10B78 <= CP && CP <= 0x10B7F) ||
(0x10B80 <= CP && CP <= 0x10B91) || (0x10B92 <= CP && CP <= 0x10B98) ||
(0x10B99 <= CP && CP <= 0x10B9C) || (0x10B9D <= CP && CP <= 0x10BA8) ||
(0x10BA9 <= CP && CP <= 0x10BAF) || (0x10BB0 <= CP && CP <= 0x10BFF) ||
(0x10C00 <= CP && CP <= 0x10C48) || (0x10C49 <= CP && CP <= 0x10C7F) ||
(0x10C80 <= CP && CP <= 0x10CB2) || (0x10CB3 <= CP && CP <= 0x10CBF) ||
(0x10CC0 <= CP && CP <= 0x10CF2) || (0x10CF3 <= CP && CP <= 0x10CF9) ||
(0x10CFA <= CP && CP <= 0x10CFF) || (0x10D40 <= CP && CP <= 0x10E5F) ||
(CP == 0x10E7F) || (0x10E80 <= CP && CP <= 0x10EA9) ||
(CP == 0x10EAA) || (CP == 0x10EAD) ||
(0x10EAE <= CP && CP <= 0x10EAF) || (0x10EB0 <= CP && CP <= 0x10EB1) ||
(0x10EB2 <= CP && CP <= 0x10EFF) || (0x10F00 <= CP && CP <= 0x10F1C) ||
(0x10F1D <= CP && CP <= 0x10F26) || (CP == 0x10F27) ||
(0x10F28 <= CP && CP <= 0x10F2F) || (0x10F70 <= CP && CP <= 0x10F81) ||
(0x10F86 <= CP && CP <= 0x10F89) || (0x10F8A <= CP && CP <= 0x10FAF) ||
(0x10FB0 <= CP && CP <= 0x10FC4) || (0x10FC5 <= CP && CP <= 0x10FCB) ||
(0x10FCC <= CP && CP <= 0x10FDF) || (0x10FE0 <= CP && CP <= 0x10FF6) ||
(0x10FF7 <= CP && CP <= 0x10FFF) || (0x1E800 <= CP && CP <= 0x1E8C4) ||
(0x1E8C5 <= CP && CP <= 0x1E8C6) || (0x1E8C7 <= CP && CP <= 0x1E8CF) ||
(0x1E8D7 <= CP && CP <= 0x1E8FF) || (0x1E900 <= CP && CP <= 0x1E943) ||
(CP == 0x1E94B) || (0x1E94C <= CP && CP <= 0x1E94F) ||
(0x1E950 <= CP && CP <= 0x1E959) || (0x1E95A <= CP && CP <= 0x1E95D) ||
(0x1E95E <= CP && CP <= 0x1E95F) || (0x1E960 <= CP && CP <= 0x1EC6F) ||
(0x1ECC0 <= CP && CP <= 0x1ECFF) || (0x1ED50 <= CP && CP <= 0x1EDFF);
}
static bool hasRTLCharacters(StringRef Buffer) {
const char *CurPtr = Buffer.begin();
const char *EndPtr = Buffer.end();
while (CurPtr < EndPtr) {
llvm::UTF32 CodePoint = 0;
llvm::ConversionResult Result = llvm::convertUTF8Sequence(
(const llvm::UTF8 **)&CurPtr, (const llvm::UTF8 *)EndPtr, &CodePoint,
llvm::strictConversion);
if (Result != llvm::conversionOK)
break;
if (isUnassignedAL(CodePoint) || isUnassignedR(CodePoint) || isR(CodePoint))
return true;
}
return false;
}
MisleadingIdentifierCheck::MisleadingIdentifierCheck(StringRef Name,
ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
MisleadingIdentifierCheck::~MisleadingIdentifierCheck() = default;
void MisleadingIdentifierCheck::check(
const ast_matchers::MatchFinder::MatchResult &Result) {
if (const auto *ND = Result.Nodes.getNodeAs<NamedDecl>("nameddecl")) {
IdentifierInfo *II = ND->getIdentifier();
if (II) {
StringRef NDName = II->getName();
if (hasRTLCharacters(NDName))
diag(ND->getBeginLoc(), "identifier has right-to-left codepoints");
}
}
}
void MisleadingIdentifierCheck::registerMatchers(
ast_matchers::MatchFinder *Finder) {
Finder->addMatcher(ast_matchers::namedDecl().bind("nameddecl"), this);
}
} // namespace clang::tidy::misc