1//===- VariantValueTest.cpp - VariantValue unit tests ---------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "../ASTMatchersTest.h"
10#include "clang/ASTMatchers/Dynamic/VariantValue.h"
11#include "gtest/gtest.h"
12
13namespace clang {
14namespace ast_matchers {
15namespace dynamic {
16namespace {
17
18TEST(VariantValueTest, Unsigned) {
19 const unsigned kUnsigned = 17;
20 VariantValue Value = kUnsigned;
21
22 EXPECT_TRUE(Value.isUnsigned());
23 EXPECT_EQ(kUnsigned, Value.getUnsigned());
24
25 EXPECT_TRUE(Value.hasValue());
26 EXPECT_FALSE(Value.isString());
27 EXPECT_FALSE(Value.isMatcher());
28}
29
30TEST(VariantValueTest, String) {
31 const StringRef kString = "string";
32 VariantValue Value = kString;
33
34 EXPECT_TRUE(Value.isString());
35 EXPECT_EQ(kString, Value.getString());
36 EXPECT_EQ("String", Value.getTypeAsString());
37
38 EXPECT_TRUE(Value.hasValue());
39 EXPECT_FALSE(Value.isUnsigned());
40 EXPECT_FALSE(Value.isMatcher());
41}
42
43TEST(VariantValueTest, DynTypedMatcher) {
44 VariantValue Value = VariantMatcher::SingleMatcher(Matcher: stmt());
45
46 EXPECT_TRUE(Value.hasValue());
47 EXPECT_FALSE(Value.isUnsigned());
48 EXPECT_FALSE(Value.isString());
49
50 EXPECT_TRUE(Value.isMatcher());
51 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Decl>());
52 EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
53 EXPECT_EQ("Matcher<Stmt>", Value.getTypeAsString());
54
55 // Can only convert to compatible matchers.
56 Value = VariantMatcher::SingleMatcher(Matcher: recordDecl());
57 EXPECT_TRUE(Value.isMatcher());
58 EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Decl>());
59 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
60 EXPECT_EQ("Matcher<Decl>", Value.getTypeAsString());
61
62 Value = VariantMatcher::SingleMatcher(Matcher: ignoringImpCasts(InnerMatcher: expr()));
63 EXPECT_TRUE(Value.isMatcher());
64 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Decl>());
65 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<Stmt>());
66 EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Expr>());
67 EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<IntegerLiteral>());
68 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<GotoStmt>());
69 EXPECT_EQ("Matcher<Expr>", Value.getTypeAsString());
70}
71
72TEST(VariantValueTest, Assignment) {
73 VariantValue Value = StringRef("A");
74 EXPECT_TRUE(Value.isString());
75 EXPECT_EQ("A", Value.getString());
76 EXPECT_TRUE(Value.hasValue());
77 EXPECT_FALSE(Value.isBoolean());
78 EXPECT_FALSE(Value.isDouble());
79 EXPECT_FALSE(Value.isUnsigned());
80 EXPECT_FALSE(Value.isMatcher());
81 EXPECT_EQ("String", Value.getTypeAsString());
82
83 Value = VariantMatcher::SingleMatcher(Matcher: recordDecl());
84 EXPECT_TRUE(Value.hasValue());
85 EXPECT_FALSE(Value.isBoolean());
86 EXPECT_FALSE(Value.isDouble());
87 EXPECT_FALSE(Value.isUnsigned());
88 EXPECT_FALSE(Value.isString());
89 EXPECT_TRUE(Value.isMatcher());
90 EXPECT_TRUE(Value.getMatcher().hasTypedMatcher<Decl>());
91 EXPECT_FALSE(Value.getMatcher().hasTypedMatcher<UnaryOperator>());
92 EXPECT_EQ("Matcher<Decl>", Value.getTypeAsString());
93
94 Value = true;
95 EXPECT_TRUE(Value.isBoolean());
96 EXPECT_EQ(true, Value.getBoolean());
97 EXPECT_TRUE(Value.hasValue());
98 EXPECT_FALSE(Value.isUnsigned());
99 EXPECT_FALSE(Value.isMatcher());
100 EXPECT_FALSE(Value.isString());
101
102 Value = 3.14;
103 EXPECT_TRUE(Value.isDouble());
104 EXPECT_EQ(3.14, Value.getDouble());
105 EXPECT_TRUE(Value.hasValue());
106 EXPECT_FALSE(Value.isBoolean());
107 EXPECT_FALSE(Value.isUnsigned());
108 EXPECT_FALSE(Value.isMatcher());
109 EXPECT_FALSE(Value.isString());
110
111 Value = 17;
112 EXPECT_TRUE(Value.isUnsigned());
113 EXPECT_EQ(17U, Value.getUnsigned());
114 EXPECT_FALSE(Value.isBoolean());
115 EXPECT_FALSE(Value.isDouble());
116 EXPECT_TRUE(Value.hasValue());
117 EXPECT_FALSE(Value.isMatcher());
118 EXPECT_FALSE(Value.isString());
119
120 Value = VariantValue();
121 EXPECT_FALSE(Value.hasValue());
122 EXPECT_FALSE(Value.isBoolean());
123 EXPECT_FALSE(Value.isDouble());
124 EXPECT_FALSE(Value.isUnsigned());
125 EXPECT_FALSE(Value.isString());
126 EXPECT_FALSE(Value.isMatcher());
127 EXPECT_EQ("Nothing", Value.getTypeAsString());
128}
129
130TEST(VariantValueTest, ImplicitBool) {
131 VariantValue Value;
132 bool IfTrue = false;
133 if (Value) {
134 IfTrue = true;
135 }
136 EXPECT_FALSE(IfTrue);
137 EXPECT_TRUE(!Value);
138
139 Value = StringRef();
140 IfTrue = false;
141 if (Value) {
142 IfTrue = true;
143 }
144 EXPECT_TRUE(IfTrue);
145 EXPECT_FALSE(!Value);
146}
147
148TEST(VariantValueTest, Matcher) {
149 EXPECT_TRUE(matches("class X {};", VariantValue(VariantMatcher::SingleMatcher(
150 recordDecl(hasName("X"))))
151 .getMatcher()
152 .getTypedMatcher<Decl>()));
153 EXPECT_TRUE(
154 matches("int x;", VariantValue(VariantMatcher::SingleMatcher(varDecl()))
155 .getMatcher()
156 .getTypedMatcher<Decl>()));
157 EXPECT_TRUE(
158 matches("int foo() { return 1 + 1; }",
159 VariantValue(VariantMatcher::SingleMatcher(functionDecl()))
160 .getMatcher()
161 .getTypedMatcher<Decl>()));
162 // Can't get the wrong matcher.
163 EXPECT_FALSE(VariantValue(VariantMatcher::SingleMatcher(varDecl()))
164 .getMatcher()
165 .hasTypedMatcher<Stmt>());
166#if !defined(NDEBUG) && GTEST_HAS_DEATH_TEST
167 // Trying to get the wrong matcher fails an assertion in Matcher<T>. We don't
168 // do this test when building with MSVC because its debug C runtime prints the
169 // assertion failure message as a wide string, which gtest doesn't understand.
170 EXPECT_DEATH(VariantValue(VariantMatcher::SingleMatcher(varDecl()))
171 .getMatcher()
172 .getTypedMatcher<Stmt>(),
173 "hasTypedMatcher");
174#endif
175
176 EXPECT_FALSE(matches(
177 "int x;", VariantValue(VariantMatcher::SingleMatcher(functionDecl()))
178 .getMatcher()
179 .getTypedMatcher<Decl>()));
180 EXPECT_FALSE(
181 matches("int foo() { return 1 + 1; }",
182 VariantValue(VariantMatcher::SingleMatcher(declRefExpr()))
183 .getMatcher()
184 .getTypedMatcher<Stmt>()));
185}
186
187TEST(VariantValueTest, NodeKind) {
188 VariantValue Value = ASTNodeKind::getFromNodeKind<Stmt>();
189 EXPECT_TRUE(Value.isNodeKind());
190 EXPECT_TRUE(Value.getNodeKind().isSame(ASTNodeKind::getFromNodeKind<Stmt>()));
191
192 Value = ASTNodeKind::getFromNodeKind<CXXMethodDecl>();
193 EXPECT_TRUE(Value.isNodeKind());
194 EXPECT_TRUE(Value.getNodeKind().isSame(
195 ASTNodeKind::getFromNodeKind<CXXMethodDecl>()));
196
197 Value.setNodeKind(ASTNodeKind::getFromNodeKind<PointerType>());
198 EXPECT_TRUE(Value.isNodeKind());
199 EXPECT_TRUE(
200 Value.getNodeKind().isSame(ASTNodeKind::getFromNodeKind<PointerType>()));
201
202 Value = 42;
203 EXPECT_TRUE(!Value.isNodeKind());
204}
205
206} // end anonymous namespace
207} // end namespace dynamic
208} // end namespace ast_matchers
209} // end namespace clang
210

source code of clang/unittests/ASTMatchers/Dynamic/VariantValueTest.cpp