Add ASTMatcher for matching extern "C" function declarations.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161974 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h
index 37e82e8..eec1dbf 100644
--- a/include/clang/ASTMatchers/ASTMatchers.h
+++ b/include/clang/ASTMatchers/ASTMatchers.h
@@ -1385,6 +1385,18 @@
return Matcher.matches(Node.getResultType(), Finder, Builder);
}
+/// \brief Matches extern "C" function declarations.
+///
+/// Given:
+/// extern "C" void f() {}
+/// extern "C" { void g() {} }
+/// void h() {}
+/// function(isExternC())
+/// matches the declaration of f and g, but not the declaration h
+AST_MATCHER(FunctionDecl, isExternC) {
+ return Node.isExternC();
+}
+
/// \brief Matches the condition expression of an if statement, for loop,
/// or conditional operator.
///
diff --git a/unittests/ASTMatchers/ASTMatchersTest.cpp b/unittests/ASTMatchers/ASTMatchersTest.cpp
index cf37c7d..dba9b7d 100644
--- a/unittests/ASTMatchers/ASTMatchersTest.cpp
+++ b/unittests/ASTMatchers/ASTMatchersTest.cpp
@@ -1099,6 +1099,12 @@
function(returns(hasDeclaration(record(hasName("Y")))))));
}
+TEST(IsExternC, MatchesExternCFunctionDeclarations) {
+ EXPECT_TRUE(matches("extern \"C\" void f() {}", function(isExternC())));
+ EXPECT_TRUE(matches("extern \"C\" { void f() {} }", function(isExternC())));
+ EXPECT_TRUE(notMatches("void f() {}", function(isExternC())));
+}
+
TEST(HasAnyParameter, DoesntMatchIfInnerMatcherDoesntMatch) {
EXPECT_TRUE(notMatches("class Y {}; class X { void x(int) {} };",
method(hasAnyParameter(hasType(record(hasName("X")))))));
