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
|
//===- unittest/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp ------------===//
//
// 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 "TestVisitor.h"
using namespace clang;
namespace {
class VarDeclVisitor : public ExpectedLocationVisitor<VarDeclVisitor> {
public:
bool VisitVarDecl(VarDecl *Variable) {
Match(Variable->getNameAsString(), Variable->getBeginLoc());
return true;
}
};
TEST(RecursiveASTVisitor, VisitsCXXForRangeStmtLoopVariable) {
VarDeclVisitor Visitor;
Visitor.ExpectMatch("i", 2, 17);
EXPECT_TRUE(Visitor.runOver(
"int x[5];\n"
"void f() { for (int i : x) {} }",
VarDeclVisitor::Lang_CXX11));
}
class ParmVarDeclVisitorForImplicitCode :
public ExpectedLocationVisitor<ParmVarDeclVisitorForImplicitCode> {
public:
bool shouldVisitImplicitCode() const { return true; }
bool VisitParmVarDecl(ParmVarDecl *ParamVar) {
Match(ParamVar->getNameAsString(), ParamVar->getBeginLoc());
return true;
}
};
// Test RAV visits parameter variable declaration of the implicit
// copy assignment operator and implicit copy constructor.
TEST(RecursiveASTVisitor, VisitsParmVarDeclForImplicitCode) {
ParmVarDeclVisitorForImplicitCode Visitor;
// Match parameter variable name of implicit copy assignment operator and
// implicit copy constructor.
// This parameter name does not have a valid IdentifierInfo, and shares
// same SourceLocation with its class declaration, so we match an empty name
// with the class' source location.
Visitor.ExpectMatch("", 1, 7);
Visitor.ExpectMatch("", 3, 7);
EXPECT_TRUE(Visitor.runOver(
"class X {};\n"
"void foo(X a, X b) {a = b;}\n"
"class Y {};\n"
"void bar(Y a) {Y b = a;}"));
}
class NamedDeclVisitor
: public ExpectedLocationVisitor<NamedDeclVisitor> {
public:
bool VisitNamedDecl(NamedDecl *Decl) {
std::string NameWithTemplateArgs;
llvm::raw_string_ostream OS(NameWithTemplateArgs);
Decl->getNameForDiagnostic(OS,
Decl->getASTContext().getPrintingPolicy(),
true);
Match(OS.str(), Decl->getLocation());
return true;
}
};
TEST(RecursiveASTVisitor, VisitsPartialTemplateSpecialization) {
// From cfe-commits/Week-of-Mon-20100830/033998.html
// Contrary to the approach suggested in that email, we visit all
// specializations when we visit the primary template. Visiting them when we
// visit the associated specialization is problematic for specializations of
// template members of class templates.
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("A<bool>", 1, 26);
Visitor.ExpectMatch("A<char *>", 2, 26);
EXPECT_TRUE(Visitor.runOver(
"template <class T> class A {};\n"
"template <class T> class A<T*> {};\n"
"A<bool> ab;\n"
"A<char*> acp;\n"));
}
TEST(RecursiveASTVisitor, VisitsUndefinedClassTemplateSpecialization) {
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("A<int>", 1, 29);
EXPECT_TRUE(Visitor.runOver(
"template<typename T> struct A;\n"
"A<int> *p;\n"));
}
TEST(RecursiveASTVisitor, VisitsNestedUndefinedClassTemplateSpecialization) {
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("A<int>::B<char>", 2, 31);
EXPECT_TRUE(Visitor.runOver(
"template<typename T> struct A {\n"
" template<typename U> struct B;\n"
"};\n"
"A<int>::B<char> *p;\n"));
}
TEST(RecursiveASTVisitor, VisitsUndefinedFunctionTemplateSpecialization) {
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("A<int>", 1, 26);
EXPECT_TRUE(Visitor.runOver(
"template<typename T> int A();\n"
"int k = A<int>();\n"));
}
TEST(RecursiveASTVisitor, VisitsNestedUndefinedFunctionTemplateSpecialization) {
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("A<int>::B<char>", 2, 35);
EXPECT_TRUE(Visitor.runOver(
"template<typename T> struct A {\n"
" template<typename U> static int B();\n"
"};\n"
"int k = A<int>::B<char>();\n"));
}
TEST(RecursiveASTVisitor, NoRecursionInSelfFriend) {
// From cfe-commits/Week-of-Mon-20100830/033977.html
NamedDeclVisitor Visitor;
Visitor.ExpectMatch("vector_iterator<int>", 2, 7);
EXPECT_TRUE(Visitor.runOver(
"template<typename Container>\n"
"class vector_iterator {\n"
" template <typename C> friend class vector_iterator;\n"
"};\n"
"vector_iterator<int> it_int;\n"));
}
} // end anonymous namespace
|
