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[ASTMatchers] add typeAliasTemplateDecl matcher.

Browse Source 
Reviewers: hokein, aaron.ballman

Reviewed By: aaron.ballman

Subscribers: aaron.ballman, cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D28671

llvm-svn: 298912
This commit is contained in:
Eric Liu 2017-03-28 12:56:47 +00:00
parent 61437ebaf4
commit 285f804282
4 changed files with 36 additions and 0 deletions
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9
clang/docs/LibASTMatchersReference.html
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@ -469,6 +469,15 @@ typeAliasDecl()
</pre></td></tr>
<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('typeAliasTemplateDecl0')"><a name="typeAliasTemplateDecl0Anchor">typeAliasTemplateDecl</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1TypeAliasTemplateDecl.html">TypeAliasTemplateDecl</a>&gt;...</td></tr>
<tr><td colspan="4" class="doc" id="typeAliasTemplateDecl0"><pre>Matches type alias template declarations.
typeAliasTemplateDecl() matches
template &lt;typename T&gt;
using Y = X&lt;T&gt;;
</pre></td></tr>
<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Decl.html">Decl</a>&gt;</td><td class="name" onclick="toggle('typedefDecl0')"><a name="typedefDecl0Anchor">typedefDecl</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1TypedefDecl.html">TypedefDecl</a>&gt;...</td></tr>
<tr><td colspan="4" class="doc" id="typedefDecl0"><pre>Matches typedef declarations.

10
clang/include/clang/ASTMatchers/ASTMatchers.h
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@ -180,6 +180,16 @@ const internal::VariadicDynCastAllOfMatcher<Decl, TypedefNameDecl>
/// matches "using Y = int", but not "typedef int X"
const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasDecl> typeAliasDecl;
/// \brief Matches type alias template declarations.
///
/// typeAliasTemplateDecl() matches
/// \code
/// template <typename T>
/// using Y = X<T>;
/// \endcode
const internal::VariadicDynCastAllOfMatcher<Decl, TypeAliasTemplateDecl>
typeAliasTemplateDecl;
/// \brief Matches AST nodes that were expanded within the main-file.
///
/// Example matches X but not Y

1
clang/lib/ASTMatchers/Dynamic/Registry.cpp
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@ -417,6 +417,7 @@ RegistryMaps::RegistryMaps() {
REGISTER_MATCHER(typedefNameDecl);
REGISTER_MATCHER(typedefType);
REGISTER_MATCHER(typeAliasDecl);
REGISTER_MATCHER(typeAliasTemplateDecl);
REGISTER_MATCHER(typeLoc);
REGISTER_MATCHER(unaryExprOrTypeTraitExpr);
REGISTER_MATCHER(unaryOperator);

16
clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
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@ -1494,6 +1494,22 @@ TEST(TypedefNameDeclMatcher, Match) {
typedefNameDecl(hasName("typedefNameDeclTest2"))));
}
TEST(TypeAliasTemplateDeclMatcher, Match) {
std::string Code = R"(
template <typename T>
class X { T t; };
template <typename T>
using typeAliasTemplateDecl = X<T>;
using typeAliasDecl = X<int>;
)";
EXPECT_TRUE(
matches(Code, typeAliasTemplateDecl(hasName("typeAliasTemplateDecl"))));
EXPECT_TRUE(
notMatches(Code, typeAliasTemplateDecl(hasName("typeAliasDecl"))));
}
TEST(ObjCMessageExprMatcher, SimpleExprs) {
// don't find ObjCMessageExpr where none are present
EXPECT_TRUE(notMatchesObjC("", objcMessageExpr(anything())));