[PATCH] D141925: [ASTMatchers] Add `isDirectInit` matcher.

[Clement Courbet via Phabricator via cfe-commits]

courbet created this revision.
courbet added reviewers: hokein, alexfh.
Herald added a project: All.
courbet requested review of this revision.
Herald added a project: clang.

To match variables that are direct-initialized.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141925

Files:
  clang/include/clang/ASTMatchers/ASTMatchers.h
  clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp


Index: clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
===================================================================
--- clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
+++ clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
@@ -1439,6 +1439,20 @@
   EXPECT_TRUE(notMatches("int X;", M));
 }
 
+TEST_P(ASTMatchersTest, IsDirectInit) {
+  auto M = varDecl(isDirectInit());
+  EXPECT_TRUE(notMatches("int i1 = 3;", M));
+  if (!GetParam().isCXX()) {
+    return;
+  }
+  EXPECT_TRUE(matches("int i2(3);", M));
+  if (!GetParam().isCXX11OrLater()) {
+    return;
+  }
+  EXPECT_TRUE(matches("int i3{3};", M));
+  EXPECT_TRUE(notMatches("int i4;", M));
+}
+
 TEST_P(ASTMatchersTest, StorageDuration) {
   StringRef T =
       "void f() { int x; static int y; } int a;static int b;extern int c;";
Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -4114,6 +4114,22 @@
           InnerMatcher.matches(*Initializer, Finder, Builder));
 }
 
+/// \brief Matches a variable initializer is a direct-initializer.
+///
+/// Example matches i1, but not i2, i3 or i4
+/// (matcher = varDecl(isStaticLocal()))
+/// \code
+/// void f() {
+///   int i1 = 3;
+///   int i2(3);
+///   int i3{3};
+///   int i4;
+/// }
+/// \endcode
+AST_MATCHER(VarDecl, isDirectInit) {
+  return Node.isDirectInit();
+}
+
 /// \brief Matches a static variable with local scope.
 ///
 /// Example matches y (matcher = varDecl(isStaticLocal()))


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