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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
//===- unittests/AST/StmtPrinterTest.cpp --- Statement printer tests ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains tests for Stmt::printPretty() and related methods.
//
// Search this file for WRONG to see test cases that are producing something
// completely wrong, invalid C++ or just misleading.
//
// These tests have a coding convention:
// * statements to be printed should be contained within a function named 'A'
// unless it should have some special name (e.g., 'operator+');
// * additional helper declarations are 'Z', 'Y', 'X' and so on.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "gtest/gtest.h"
using namespace clang;
using namespace ast_matchers;
using namespace tooling;
namespace {
void PrintStmt(raw_ostream &Out, const ASTContext *Context, const Stmt *S) {
assert(S != nullptr && "Expected non-null Stmt");
PrintingPolicy Policy = Context->getPrintingPolicy();
S->printPretty(Out, /*Helper*/ nullptr, Policy);
}
class PrintMatch : public MatchFinder::MatchCallback {
SmallString<1024> Printed;
unsigned NumFoundStmts;
public:
PrintMatch() : NumFoundStmts(0) {}
void run(const MatchFinder::MatchResult &Result) override {
const Stmt *S = Result.Nodes.getNodeAs<Stmt>("id");
if (!S)
return;
NumFoundStmts++;
if (NumFoundStmts > 1)
return;
llvm::raw_svector_ostream Out(Printed);
PrintStmt(Out, Result.Context, S);
}
StringRef getPrinted() const {
return Printed;
}
unsigned getNumFoundStmts() const {
return NumFoundStmts;
}
};
template <typename T>
::testing::AssertionResult
PrintedStmtMatches(StringRef Code, const std::vector<std::string> &Args,
const T &NodeMatch, StringRef ExpectedPrinted) {
PrintMatch Printer;
MatchFinder Finder;
Finder.addMatcher(NodeMatch, &Printer);
std::unique_ptr<FrontendActionFactory> Factory(
newFrontendActionFactory(&Finder));
if (!runToolOnCodeWithArgs(Factory->create(), Code, Args))
return testing::AssertionFailure()
<< "Parsing error in \"" << Code.str() << "\"";
if (Printer.getNumFoundStmts() == 0)
return testing::AssertionFailure()
<< "Matcher didn't find any statements";
if (Printer.getNumFoundStmts() > 1)
return testing::AssertionFailure()
<< "Matcher should match only one statement "
"(found " << Printer.getNumFoundStmts() << ")";
if (Printer.getPrinted() != ExpectedPrinted)
return ::testing::AssertionFailure()
<< "Expected \"" << ExpectedPrinted.str() << "\", "
"got \"" << Printer.getPrinted().str() << "\"";
return ::testing::AssertionSuccess();
}
::testing::AssertionResult
PrintedStmtCXX98Matches(StringRef Code, const StatementMatcher &NodeMatch,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-std=c++98");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code, Args, NodeMatch, ExpectedPrinted);
}
::testing::AssertionResult PrintedStmtCXX98Matches(
StringRef Code,
StringRef ContainingFunction,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-std=c++98");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code,
Args,
functionDecl(hasName(ContainingFunction),
has(compoundStmt(has(stmt().bind("id"))))),
ExpectedPrinted);
}
::testing::AssertionResult
PrintedStmtCXX11Matches(StringRef Code, const StatementMatcher &NodeMatch,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-std=c++11");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code, Args, NodeMatch, ExpectedPrinted);
}
::testing::AssertionResult PrintedStmtMSMatches(
StringRef Code,
StringRef ContainingFunction,
StringRef ExpectedPrinted) {
std::vector<std::string> Args;
Args.push_back("-target");
Args.push_back("i686-pc-win32");
Args.push_back("-std=c++98");
Args.push_back("-fms-extensions");
Args.push_back("-Wno-unused-value");
return PrintedStmtMatches(Code,
Args,
functionDecl(hasName(ContainingFunction),
has(compoundStmt(has(stmt().bind("id"))))),
ExpectedPrinted);
}
} // unnamed namespace
TEST(StmtPrinter, TestIntegerLiteral) {
ASSERT_TRUE(PrintedStmtCXX98Matches(
"void A() {"
" 1, -1, 1U, 1u,"
" 1L, 1l, -1L, 1UL, 1ul,"
" 1LL, -1LL, 1ULL;"
"}",
"A",
"1 , -1 , 1U , 1U , "
"1L , 1L , -1L , 1UL , 1UL , "
"1LL , -1LL , 1ULL"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestMSIntegerLiteral) {
ASSERT_TRUE(PrintedStmtMSMatches(
"void A() {"
" 1i8, -1i8, 1ui8, "
" 1i16, -1i16, 1ui16, "
" 1i32, -1i32, 1ui32, "
" 1i64, -1i64, 1ui64;"
"}",
"A",
"1i8 , -1i8 , 1Ui8 , "
"1i16 , -1i16 , 1Ui16 , "
"1 , -1 , 1U , "
"1LL , -1LL , 1ULL"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestFloatingPointLiteral) {
ASSERT_TRUE(PrintedStmtCXX98Matches(
"void A() { 1.0f, -1.0f, 1.0, -1.0, 1.0l, -1.0l; }",
"A",
"1.F , -1.F , 1. , -1. , 1.L , -1.L"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestCXXConversionDeclImplicit) {
ASSERT_TRUE(PrintedStmtCXX98Matches(
"struct A {"
"operator void *();"
"A operator&(A);"
"};"
"void bar(void *);"
"void foo(A a, A b) {"
" bar(a & b);"
"}",
cxxMemberCallExpr(anything()).bind("id"),
"a & b"));
}
TEST(StmtPrinter, TestCXXConversionDeclExplicit) {
ASSERT_TRUE(PrintedStmtCXX11Matches(
"struct A {"
"operator void *();"
"A operator&(A);"
"};"
"void bar(void *);"
"void foo(A a, A b) {"
" auto x = (a & b).operator void *();"
"}",
cxxMemberCallExpr(anything()).bind("id"),
"(a & b)"));
// WRONG; Should be: (a & b).operator void *()
}
|
