diff options
| -rw-r--r-- | include/clang/ASTMatchers/ASTMatchers.h | 13 | ||||
| -rw-r--r-- | unittests/ASTMatchers/ASTMatchersTest.cpp | 8 |
2 files changed, 21 insertions, 0 deletions
diff --git a/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h index a70dd5c378..71ce10f893 100644 --- a/include/clang/ASTMatchers/ASTMatchers.h +++ b/include/clang/ASTMatchers/ASTMatchers.h @@ -1974,6 +1974,19 @@ AST_MATCHER_P(FunctionDecl, hasAnyParameter, return false; } +/// \brief Matches \c FunctionDecls that have a specific parameter count. +/// +/// Given +/// \code +/// void f(int i) {} +/// void g(int i, int j) {} +/// \endcode +/// functionDecl(parameterCountIs(2)) +/// matches g(int i, int j) {} +AST_MATCHER_P(FunctionDecl, parameterCountIs, unsigned, N) { + return Node.getNumParams() == N; +} + /// \brief Matches the return type of a function declaration. /// /// Given: diff --git a/unittests/ASTMatchers/ASTMatchersTest.cpp b/unittests/ASTMatchers/ASTMatchersTest.cpp index ad072aa7ce..f3d377b771 100644 --- a/unittests/ASTMatchers/ASTMatchersTest.cpp +++ b/unittests/ASTMatchers/ASTMatchersTest.cpp @@ -1238,6 +1238,14 @@ TEST(Matcher, ArgumentCount) { EXPECT_TRUE(notMatches("void x(int, int) { x(0, 0); }", Call1Arg)); } +TEST(Matcher, ParameterCount) { + DeclarationMatcher Function1Arg = functionDecl(parameterCountIs(1)); + EXPECT_TRUE(matches("void f(int i) {}", Function1Arg)); + EXPECT_TRUE(matches("class X { void f(int i) {} };", Function1Arg)); + EXPECT_TRUE(notMatches("void f() {}", Function1Arg)); + EXPECT_TRUE(notMatches("void f(int i, int j, int k) {}", Function1Arg)); +} + TEST(Matcher, References) { DeclarationMatcher ReferenceClassX = varDecl( hasType(references(recordDecl(hasName("X"))))); |