[cfe-commits] r169257 - in /cfe/trunk: include/clang/ASTMatchers/ASTMatchers.h unittests/ASTMatchers/ASTMatchersTest.cpp

[Daniel Jasper]

Author: djasper
Date: Tue Dec  4 05:54:27 2012
New Revision: 169257

URL: http://llvm.org/viewvc/llvm-project?rev=169257&view=rev
Log:
Add parameterCountIs() matcher.

Modified:
    cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
    cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp

Modified: cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h?rev=169257&r1=169256&r2=169257&view=diff
==============================================================================
--- cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h (original)
+++ cfe/trunk/include/clang/ASTMatchers/ASTMatchers.h Tue Dec  4 05:54:27 2012
@@ -1974,6 +1974,19 @@
   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:

Modified: cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp?rev=169257&r1=169256&r2=169257&view=diff
==============================================================================
--- cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp (original)
+++ cfe/trunk/unittests/ASTMatchers/ASTMatchersTest.cpp Tue Dec  4 05:54:27 2012
@@ -1238,6 +1238,14 @@
   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")))));