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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
| //===- unittests/AST/StmtPrinterTest.cpp --- Statement printer tests ------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// 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 "ASTPrint.h"
#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 {
enum class StdVer { CXX98, CXX11, CXX14, CXX17, CXX2a };
DeclarationMatcher FunctionBodyMatcher(StringRef ContainingFunction) {
return functionDecl(hasName(ContainingFunction),
has(compoundStmt(has(stmt().bind("id")))));
}
template <typename T>
::testing::AssertionResult
PrintedStmtCXXMatches(StdVer Standard, StringRef Code, const T &NodeMatch,
StringRef ExpectedPrinted,
PolicyAdjusterType PolicyAdjuster = None) {
const char *StdOpt;
switch (Standard) {
case StdVer::CXX98: StdOpt = "-std=c++98"; break;
case StdVer::CXX11: StdOpt = "-std=c++11"; break;
case StdVer::CXX14: StdOpt = "-std=c++14"; break;
case StdVer::CXX17: StdOpt = "-std=c++17"; break;
case StdVer::CXX2a: StdOpt = "-std=c++2a"; break;
}
std::vector<std::string> Args = {
StdOpt,
"-Wno-unused-value",
};
return PrintedStmtMatches(Code, Args, NodeMatch, ExpectedPrinted,
PolicyAdjuster);
}
template <typename T>
::testing::AssertionResult
PrintedStmtMSMatches(StringRef Code, const T &NodeMatch,
StringRef ExpectedPrinted,
PolicyAdjusterType PolicyAdjuster = None) {
std::vector<std::string> Args = {
"-std=c++98",
"-target", "i686-pc-win32",
"-fms-extensions",
"-Wno-unused-value",
};
return PrintedStmtMatches(Code, Args, NodeMatch, ExpectedPrinted,
PolicyAdjuster);
}
template <typename T>
::testing::AssertionResult
PrintedStmtObjCMatches(StringRef Code, const T &NodeMatch,
StringRef ExpectedPrinted,
PolicyAdjusterType PolicyAdjuster = None) {
std::vector<std::string> Args = {
"-ObjC",
"-fobjc-runtime=macosx-10.12.0",
};
return PrintedStmtMatches(Code, Args, NodeMatch, ExpectedPrinted,
PolicyAdjuster);
}
} // unnamed namespace
TEST(StmtPrinter, TestIntegerLiteral) {
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX98,
"void A() {"
" 1, -1, 1U, 1u,"
" 1L, 1l, -1L, 1UL, 1ul,"
" 1LL, -1LL, 1ULL;"
"}",
FunctionBodyMatcher("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;"
"}",
FunctionBodyMatcher("A"),
"1i8 , -1i8 , 1Ui8 , "
"1i16 , -1i16 , 1Ui16 , "
"1 , -1 , 1U , "
"1LL , -1LL , 1ULL"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestFloatingPointLiteral) {
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX98,
"void A() { 1.0f, -1.0f, 1.0, -1.0, 1.0l, -1.0l; }",
FunctionBodyMatcher("A"),
"1.F , -1.F , 1. , -1. , 1.L , -1.L"));
// Should be: with semicolon
}
TEST(StmtPrinter, TestCXXConversionDeclImplicit) {
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX98,
"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(PrintedStmtCXXMatches(StdVer::CXX11,
"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 *()
}
TEST(StmtPrinter, TestCXXLamda) {
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11,
"void A() {"
" auto l = [] { };"
"}",
lambdaExpr(anything()).bind("id"),
"[] {\n"
"}"));
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11,
"void A() {"
" int a = 0, b = 1;"
" auto l = [a,b](int c, float d) { };"
"}",
lambdaExpr(anything()).bind("id"),
"[a, b](int c, float d) {\n"
"}"));
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX14,
"void A() {"
" auto l = [](auto a, int b, auto c, int, auto) { };"
"}",
lambdaExpr(anything()).bind("id"),
"[](auto a, int b, auto c, int, auto) {\n"
"}"));
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX2a,
"void A() {"
" auto l = []<typename T1, class T2, int I,"
" template<class, typename> class T3>"
" (int a, auto, int, auto d) { };"
"}",
lambdaExpr(anything()).bind("id"),
"[]<typename T1, class T2, int I, template <class, typename> class T3>(int a, auto, int, auto d) {\n"
"}"));
}
TEST(StmtPrinter, TestNoImplicitBases) {
const char *CPPSource = R"(
class A {
int field;
int member() { return field; }
};
)";
// No implicit 'this'.
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11,
CPPSource, memberExpr(anything()).bind("id"), "field",
PolicyAdjusterType(
[](PrintingPolicy &PP) { PP.SuppressImplicitBase = true; })));
// Print implicit 'this'.
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11,
CPPSource, memberExpr(anything()).bind("id"), "this->field"));
const char *ObjCSource = R"(
@interface I {
int ivar;
}
@end
@implementation I
- (int) method {
return ivar;
}
@end
)";
// No implicit 'self'.
ASSERT_TRUE(PrintedStmtObjCMatches(ObjCSource, returnStmt().bind("id"),
"return ivar;\n",
PolicyAdjusterType([](PrintingPolicy &PP) {
PP.SuppressImplicitBase = true;
})));
// Print implicit 'self'.
ASSERT_TRUE(PrintedStmtObjCMatches(ObjCSource, returnStmt().bind("id"),
"return self->ivar;\n"));
}
TEST(StmtPrinter, TerseOutputWithLambdas) {
const char *CPPSource = "auto lamb = []{ return 0; };";
// body is printed when TerseOutput is off(default).
ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11, CPPSource,
lambdaExpr(anything()).bind("id"),
"[] {\n return 0;\n}"));
// body not printed when TerseOutput is on.
ASSERT_TRUE(PrintedStmtCXXMatches(
StdVer::CXX11, CPPSource, lambdaExpr(anything()).bind("id"), "[] {}",
PolicyAdjusterType([](PrintingPolicy &PP) { PP.TerseOutput = true; })));
}
|