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
|
//===--- TestVisitor.h ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a utility class for RecursiveASTVisitor related tests.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TEST_VISITOR_H
#define LLVM_CLANG_TEST_VISITOR_H
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"
namespace clang {
/// \brief Base class for simple RecursiveASTVisitor based tests.
///
/// This is a drop-in replacement for RecursiveASTVisitor itself, with the
/// additional capability of running it over a snippet of code.
///
/// Visits template instantiations by default.
template <typename T>
class TestVisitor : public RecursiveASTVisitor<T> {
public:
TestVisitor() { }
virtual ~TestVisitor() { }
/// \brief Runs the current AST visitor over the given code.
bool runOver(StringRef Code) {
return tooling::runToolOnCode(CreateTestAction(), Code);
}
bool shouldVisitTemplateInstantiations() const {
return true;
}
protected:
virtual ASTFrontendAction* CreateTestAction() {
return new TestAction(this);
}
class FindConsumer : public ASTConsumer {
public:
FindConsumer(TestVisitor *Visitor) : Visitor(Visitor) {}
virtual void HandleTranslationUnit(clang::ASTContext &Context) {
Visitor->TraverseDecl(Context.getTranslationUnitDecl());
}
private:
TestVisitor *Visitor;
};
class TestAction : public ASTFrontendAction {
public:
TestAction(TestVisitor *Visitor) : Visitor(Visitor) {}
virtual clang::ASTConsumer* CreateASTConsumer(
CompilerInstance& compiler, llvm::StringRef dummy) {
Visitor->Context = &compiler.getASTContext();
/// TestConsumer will be deleted by the framework calling us.
return new FindConsumer(Visitor);
}
protected:
TestVisitor *Visitor;
};
ASTContext *Context;
};
/// \brief A RecursiveASTVisitor for testing the RecursiveASTVisitor itself.
///
/// Allows simple creation of test visitors running matches on only a small
/// subset of the Visit* methods.
template <typename T, template <typename> class Visitor = TestVisitor>
class ExpectedLocationVisitor : public Visitor<T> {
public:
ExpectedLocationVisitor()
: ExpectedLine(0), ExpectedColumn(0), Found(false) {}
virtual ~ExpectedLocationVisitor() {
EXPECT_TRUE(Found)
<< "Expected \"" << ExpectedMatch << "\" at " << ExpectedLine
<< ":" << ExpectedColumn << PartialMatches;
}
/// \brief Expect 'Match' to occur at the given 'Line' and 'Column'.
void ExpectMatch(Twine Match, unsigned Line, unsigned Column) {
ExpectedMatch = Match.str();
ExpectedLine = Line;
ExpectedColumn = Column;
}
protected:
/// \brief Convenience method to simplify writing test visitors.
///
/// Sets 'Found' to true if 'Name' and 'Location' match the expected
/// values. If only a partial match is found, record the information
/// to produce nice error output when a test fails.
///
/// Implementations are required to call this with appropriate values
/// for 'Name' during visitation.
void Match(StringRef Name, SourceLocation Location) {
FullSourceLoc FullLocation = this->Context->getFullLoc(Location);
if (Name == ExpectedMatch &&
FullLocation.isValid() &&
FullLocation.getSpellingLineNumber() == ExpectedLine &&
FullLocation.getSpellingColumnNumber() == ExpectedColumn) {
EXPECT_TRUE(!Found);
Found = true;
} else if (Name == ExpectedMatch ||
(FullLocation.isValid() &&
FullLocation.getSpellingLineNumber() == ExpectedLine &&
FullLocation.getSpellingColumnNumber() == ExpectedColumn)) {
// If we did not match, record information about partial matches.
llvm::raw_string_ostream Stream(PartialMatches);
Stream << ", partial match: \"" << Name << "\" at ";
Location.print(Stream, this->Context->getSourceManager());
}
}
std::string ExpectedMatch;
unsigned ExpectedLine;
unsigned ExpectedColumn;
std::string PartialMatches;
bool Found;
};
}
#endif /* LLVM_CLANG_TEST_VISITOR_H */
|
