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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef LO_CLANG_SHARED_PLUGINS
#include "config_clang.h"
#include "plugin.hxx"
#include "check.hxx"
namespace {
Expr const * stripCtor(Expr const * expr) {
auto e1 = expr;
if (auto const e = dyn_cast<CXXFunctionalCastExpr>(e1)) {
e1 = e->getSubExpr()->IgnoreParenImpCasts();
}
if (auto const e = dyn_cast<CXXBindTemporaryExpr>(e1)) {
e1 = e->getSubExpr()->IgnoreParenImpCasts();
}
auto const e2 = dyn_cast<CXXConstructExpr>(e1);
if (e2 == nullptr) {
return expr;
}
auto qt = loplugin::DeclCheck(e2->getConstructor());
if (qt.MemberFunction().Class("OStringLiteral").Namespace("rtl").GlobalNamespace()
|| qt.MemberFunction().Class("OUStringLiteral").Namespace("rtl").GlobalNamespace())
{
if (e2->getNumArgs() == 1) {
return e2->getArg(0)->IgnoreParenImpCasts();
}
return expr;
}
if (!((qt.MemberFunction().Class("OString").Namespace("rtl")
.GlobalNamespace())
|| (qt.MemberFunction().Class("OUString").Namespace("rtl")
.GlobalNamespace())))
{
return expr;
}
if (e2->getNumArgs() != 2) {
return expr;
}
return e2->getArg(0)->IgnoreParenImpCasts();
}
class StringConcatLiterals:
public loplugin::FilteringPlugin<StringConcatLiterals>
{
public:
explicit StringConcatLiterals(loplugin::InstantiationData const & data):
FilteringPlugin(data) {}
void run() override
{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
bool VisitCallExpr(CallExpr const * expr);
private:
bool isStringLiteral(Expr const * expr);
};
bool StringConcatLiterals::VisitCallExpr(CallExpr const * expr) {
if (ignoreLocation(expr)) {
return true;
}
FunctionDecl const * fdecl = expr->getDirectCallee();
if (fdecl == nullptr) {
return true;
}
OverloadedOperatorKind oo = fdecl->getOverloadedOperator();
if ((oo != OverloadedOperatorKind::OO_Plus
&& oo != OverloadedOperatorKind::OO_LessLess)
|| fdecl->getNumParams() != 2 || expr->getNumArgs() != 2
|| !isStringLiteral(expr->getArg(1)->IgnoreParenImpCasts()))
{
return true;
}
SourceLocation leftLoc;
auto const leftExpr = expr->getArg(0)->IgnoreParenImpCasts();
if (isStringLiteral(leftExpr)) {
leftLoc = leftExpr->getBeginLoc();
} else {
CallExpr const * left = dyn_cast<CallExpr>(leftExpr);
if (left == nullptr) {
return true;
}
FunctionDecl const * ldecl = left->getDirectCallee();
if (ldecl == nullptr) {
return true;
}
OverloadedOperatorKind loo = ldecl->getOverloadedOperator();
if ((loo != OverloadedOperatorKind::OO_Plus
&& loo != OverloadedOperatorKind::OO_LessLess)
|| ldecl->getNumParams() != 2 || left->getNumArgs() != 2
|| !isStringLiteral(left->getArg(1)->IgnoreParenImpCasts()))
{
return true;
}
leftLoc = left->getArg(1)->getBeginLoc();
}
// We add an extra " " in the TOOLS_WARN_EXCEPTION macro, which triggers this plugin
if (loplugin::isSamePathname(
getFilenameOfLocation(
compiler.getSourceManager().getSpellingLoc(
compiler.getSourceManager().getImmediateMacroCallerLoc(
compiler.getSourceManager().getImmediateMacroCallerLoc(
compiler.getSourceManager().getImmediateMacroCallerLoc(
expr->getBeginLoc()))))),
SRCDIR "/include/tools/diagnose_ex.h"))
return true;
StringRef name {
getFilenameOfLocation(
compiler.getSourceManager().getSpellingLoc(expr->getBeginLoc())) };
if (loplugin::isSamePathname(
name, SRCDIR "/sal/qa/rtl/oustringbuffer/test_oustringbuffer_assign.cxx")
|| loplugin::isSamePathname(
name, SRCDIR "/sal/qa/rtl/strings/test_ostring_concat.cxx")
|| loplugin::isSamePathname(
name, SRCDIR "/sal/qa/rtl/strings/test_oustring_concat.cxx"))
{
return true;
}
CXXOperatorCallExpr const * op = dyn_cast<CXXOperatorCallExpr>(expr);
report(
DiagnosticsEngine::Warning,
"replace '%0' between string literals with juxtaposition",
op == nullptr ? expr->getExprLoc() : op->getOperatorLoc())
<< (oo == OverloadedOperatorKind::OO_Plus ? "+" : "<<")
<< SourceRange(leftLoc, expr->getArg(1)->getEndLoc());
return true;
}
bool StringConcatLiterals::isStringLiteral(Expr const * expr) {
expr = stripCtor(expr);
if (!isa<clang::StringLiteral>(expr)) {
return false;
}
return true;
}
loplugin::Plugin::Registration<StringConcatLiterals> stringconcatliterals("stringconcatliterals");
} // namespace
#endif // LO_CLANG_SHARED_PLUGINS
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
