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1 //===- unittest/AST/ASTTypeTraits.cpp - AST type traits unit tests ------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===--------------------------------------------------------------------===//
9 
10 
11 #include "clang/AST/ASTTypeTraits.h"
12 #include "MatchVerifier.h"
13 #include "gtest/gtest.h"
14 
15 using namespace clang::ast_matchers;
16 
17 namespace clang {
18 namespace ast_type_traits {
19 
TEST(ASTNodeKind,NoKind)20 TEST(ASTNodeKind, NoKind) {
21   EXPECT_FALSE(ASTNodeKind().isBaseOf(ASTNodeKind()));
22   EXPECT_FALSE(ASTNodeKind().isSame(ASTNodeKind()));
23 }
24 
DNT()25 template <typename T> static ASTNodeKind DNT() {
26   return ASTNodeKind::getFromNodeKind<T>();
27 }
28 
TEST(ASTNodeKind,IsNone)29 TEST(ASTNodeKind, IsNone) {
30   EXPECT_TRUE(ASTNodeKind().isNone());
31   EXPECT_FALSE(DNT<Decl>().isNone());
32   EXPECT_FALSE(DNT<VarDecl>().isNone());
33 }
34 
TEST(ASTNodeKind,Bases)35 TEST(ASTNodeKind, Bases) {
36   EXPECT_TRUE(DNT<Decl>().isBaseOf(DNT<VarDecl>()));
37   EXPECT_FALSE(DNT<Decl>().isSame(DNT<VarDecl>()));
38   EXPECT_FALSE(DNT<VarDecl>().isBaseOf(DNT<Decl>()));
39 
40   EXPECT_TRUE(DNT<Decl>().isSame(DNT<Decl>()));
41 }
42 
TEST(ASTNodeKind,BaseDistances)43 TEST(ASTNodeKind, BaseDistances) {
44   unsigned Distance = 1;
45   EXPECT_TRUE(DNT<Expr>().isBaseOf(DNT<Expr>(), &Distance));
46   EXPECT_EQ(0u, Distance);
47 
48   EXPECT_TRUE(DNT<Stmt>().isBaseOf(DNT<IfStmt>(), &Distance));
49   EXPECT_EQ(1u, Distance);
50 
51   Distance = 3;
52   EXPECT_TRUE(DNT<DeclaratorDecl>().isBaseOf(DNT<ParmVarDecl>(), &Distance));
53   EXPECT_EQ(2u, Distance);
54 }
55 
TEST(ASTNodeKind,SameBase)56 TEST(ASTNodeKind, SameBase) {
57   EXPECT_TRUE(DNT<Expr>().isBaseOf(DNT<CallExpr>()));
58   EXPECT_TRUE(DNT<Expr>().isBaseOf(DNT<BinaryOperator>()));
59   EXPECT_FALSE(DNT<CallExpr>().isBaseOf(DNT<BinaryOperator>()));
60   EXPECT_FALSE(DNT<BinaryOperator>().isBaseOf(DNT<CallExpr>()));
61 }
62 
TEST(ASTNodeKind,DiffBase)63 TEST(ASTNodeKind, DiffBase) {
64   EXPECT_FALSE(DNT<Expr>().isBaseOf(DNT<ArrayType>()));
65   EXPECT_FALSE(DNT<QualType>().isBaseOf(DNT<FunctionDecl>()));
66   EXPECT_FALSE(DNT<Type>().isSame(DNT<QualType>()));
67 }
68 
TEST(ASTNodeKind,MostDerivedType)69 TEST(ASTNodeKind, MostDerivedType) {
70   EXPECT_TRUE(DNT<BinaryOperator>().isSame(
71       ASTNodeKind::getMostDerivedType(DNT<Expr>(), DNT<BinaryOperator>())));
72   EXPECT_TRUE(DNT<BinaryOperator>().isSame(
73       ASTNodeKind::getMostDerivedType(DNT<BinaryOperator>(), DNT<Expr>())));
74   EXPECT_TRUE(DNT<VarDecl>().isSame(
75       ASTNodeKind::getMostDerivedType(DNT<VarDecl>(), DNT<VarDecl>())));
76 
77   // Not related. Returns nothing.
78   EXPECT_TRUE(
79       ASTNodeKind::getMostDerivedType(DNT<IfStmt>(), DNT<VarDecl>()).isNone());
80   EXPECT_TRUE(ASTNodeKind::getMostDerivedType(DNT<IfStmt>(),
81                                               DNT<BinaryOperator>()).isNone());
82 }
83 
TEST(ASTNodeKind,MostDerivedCommonAncestor)84 TEST(ASTNodeKind, MostDerivedCommonAncestor) {
85   EXPECT_TRUE(DNT<Expr>().isSame(ASTNodeKind::getMostDerivedCommonAncestor(
86       DNT<Expr>(), DNT<BinaryOperator>())));
87   EXPECT_TRUE(DNT<Expr>().isSame(ASTNodeKind::getMostDerivedCommonAncestor(
88       DNT<BinaryOperator>(), DNT<Expr>())));
89   EXPECT_TRUE(DNT<VarDecl>().isSame(ASTNodeKind::getMostDerivedCommonAncestor(
90       DNT<VarDecl>(), DNT<VarDecl>())));
91 
92   // A little related. Returns the ancestor.
93   EXPECT_TRUE(
94       DNT<NamedDecl>().isSame(ASTNodeKind::getMostDerivedCommonAncestor(
95           DNT<CXXMethodDecl>(), DNT<RecordDecl>())));
96 
97   // Not related. Returns nothing.
98   EXPECT_TRUE(ASTNodeKind::getMostDerivedCommonAncestor(
99                   DNT<IfStmt>(), DNT<VarDecl>()).isNone());
100 }
101 
102 struct Foo {};
103 
TEST(ASTNodeKind,UnknownKind)104 TEST(ASTNodeKind, UnknownKind) {
105   // We can construct one, but it is nowhere in the hierarchy.
106   EXPECT_FALSE(DNT<Foo>().isSame(DNT<Foo>()));
107 }
108 
TEST(ASTNodeKind,Name)109 TEST(ASTNodeKind, Name) {
110   EXPECT_EQ("<None>", ASTNodeKind().asStringRef());
111 #define VERIFY_NAME(Node) EXPECT_EQ(#Node, DNT<Node>().asStringRef());
112   VERIFY_NAME(TemplateArgument);
113   VERIFY_NAME(NestedNameSpecifierLoc);
114   VERIFY_NAME(QualType);
115   VERIFY_NAME(TypeLoc);
116   VERIFY_NAME(CXXCtorInitializer);
117   VERIFY_NAME(NestedNameSpecifier);
118   VERIFY_NAME(Decl);
119   VERIFY_NAME(CXXRecordDecl);
120   VERIFY_NAME(Stmt);
121   VERIFY_NAME(CallExpr);
122   VERIFY_NAME(Type);
123   VERIFY_NAME(ConstantArrayType);
124 #undef VERIFY_NAME
125 }
126 
TEST(DynTypedNode,DeclSourceRange)127 TEST(DynTypedNode, DeclSourceRange) {
128   RangeVerifier<DynTypedNode> Verifier;
129   Verifier.expectRange(1, 1, 1, 11);
130   EXPECT_TRUE(Verifier.match("void f() {}", decl()));
131 }
132 
TEST(DynTypedNode,StmtSourceRange)133 TEST(DynTypedNode, StmtSourceRange) {
134   RangeVerifier<DynTypedNode> Verifier;
135   Verifier.expectRange(1, 10, 1, 11);
136   EXPECT_TRUE(Verifier.match("void f() {}", stmt()));
137 }
138 
TEST(DynTypedNode,TypeLocSourceRange)139 TEST(DynTypedNode, TypeLocSourceRange) {
140   RangeVerifier<DynTypedNode> Verifier;
141   Verifier.expectRange(1, 1, 1, 8);
142   EXPECT_TRUE(Verifier.match("void f() {}", typeLoc(loc(functionType()))));
143 }
144 
TEST(DynTypedNode,NNSLocSourceRange)145 TEST(DynTypedNode, NNSLocSourceRange) {
146   RangeVerifier<DynTypedNode> Verifier;
147   Verifier.expectRange(1, 33, 1, 34);
148   EXPECT_TRUE(Verifier.match("namespace N { typedef void T; } N::T f() {}",
149                              nestedNameSpecifierLoc()));
150 }
151 
TEST(DynTypedNode,DeclDump)152 TEST(DynTypedNode, DeclDump) {
153   DumpVerifier Verifier;
154   Verifier.expectSubstring("FunctionDecl");
155   EXPECT_TRUE(Verifier.match("void f() {}", functionDecl()));
156 }
157 
TEST(DynTypedNode,StmtDump)158 TEST(DynTypedNode, StmtDump) {
159   DumpVerifier Verifier;
160   Verifier.expectSubstring("CompoundStmt");
161   EXPECT_TRUE(Verifier.match("void f() {}", stmt()));
162 }
163 
TEST(DynTypedNode,DeclPrint)164 TEST(DynTypedNode, DeclPrint) {
165   PrintVerifier Verifier;
166   Verifier.expectString("void f() {\n}\n\n");
167   EXPECT_TRUE(Verifier.match("void f() {}", functionDecl()));
168 }
169 
TEST(DynTypedNode,StmtPrint)170 TEST(DynTypedNode, StmtPrint) {
171   PrintVerifier Verifier;
172   Verifier.expectString("{\n}\n");
173   EXPECT_TRUE(Verifier.match("void f() {}", stmt()));
174 }
175 
TEST(DynTypedNode,QualType)176 TEST(DynTypedNode, QualType) {
177   QualType Q;
178   DynTypedNode Node = DynTypedNode::create(Q);
179   EXPECT_TRUE(Node == Node);
180   EXPECT_FALSE(Node < Node);
181 }
182 
183 }  // namespace ast_type_traits
184 }  // namespace clang
185