[clang-tidy] Adding Fuchsia checker for overloaded operators

Adds a check to the Fuchsia module to warn if an operator is overloaded,
except move and copy operators.

See https://fuchsia.googlesource.com/zircon/+/master/docs/cxx.md for
reference.

Differential Revision: https://reviews.llvm.org/D41363

llvm-svn: 321363

1 files changed, 18 insertions, 0 deletions

diff --git a/clang-tools-extra/docs/clang-tidy/checks/fuchsia-overloaded-operator.rst b/clang-tools-extra/docs/clang-tidy/checks/fuchsia-overloaded-operator.rst
new file mode 100644
index 00000000000..070780f48db
--- /dev/null
+++ b/clang-tools-extra/docs/clang-tidy/checks/fuchsia-overloaded-operator.rst
@@ -0,0 +1,18 @@
+.. title:: clang-tidy - fuchsia-overloaded-operator
+
+fuchsia-overloaded-operator
+===========================
+
+Warns if an operator is overloaded, except for the assignment (copy and move) 
+operators.
+
+For example:
+
+.. code-block:: c++
+
+  int operator+(int);     // Warning
+
+  B &operator=(const B &Other);  // No warning
+  B &operator=(B &&Other) // No warning
+
+See the features disallowed in Fuchsia at https://fuchsia.googlesource.com/zircon/+/master/docs/cxx.md