Add and parse cpp_static_assert

include/cppast/cpp_entity_kind.hpp

@@ -57,6 +57,8 @@ namespace cppast
         class_template_t,
         class_template_specialization_t,
 
+        static_assert_t,
+
         unexposed_t,
 
         count,

include/cppast/cpp_static_assert.hpp

@@ -0,0 +1,52 @@
+// Copyright (C) 2017 Jonathan Müller <jonathanmueller.dev@gmail.com>
+// This file is subject to the license terms in the LICENSE file
+// found in the top-level directory of this distribution.
+
+#ifndef CPPAST_CPP_STATIC_ASSERT_HPP_INCLUDED
+#define CPPAST_CPP_STATIC_ASSERT_HPP_INCLUDED
+
+#include <cppast/cpp_entity.hpp>
+#include <cppast/cpp_expression.hpp>
+
+namespace cppast
+{
+    class cpp_static_assert : public cpp_entity
+    {
+    public:
+        static cpp_entity_kind kind() noexcept;
+
+        /// \returns A newly created `static_assert()` entity.
+        /// \notes It will not be registered as nothing can refer to it.
+        static std::unique_ptr<cpp_static_assert> build(std::unique_ptr<cpp_expression> expr,
+                                                        std::string                     msg)
+        {
+            return std::unique_ptr<cpp_static_assert>(
+                new cpp_static_assert(std::move(expr), std::move(msg)));
+        }
+
+        /// \returns A reference to the [cppast::cpp_expression]() that is being asserted.
+        const cpp_expression& expression() const noexcept
+        {
+            return *expr_;
+        }
+
+        /// \returns A reference to the message of the assertion.
+        const std::string& message() const noexcept
+        {
+            return msg_;
+        }
+
+    private:
+        cpp_static_assert(std::unique_ptr<cpp_expression> expr, std::string msg)
+        : cpp_entity(""), expr_(std::move(expr)), msg_(std::move(msg))
+        {
+        }
+
+        cpp_entity_kind do_get_entity_kind() const noexcept override;
+
+        std::unique_ptr<cpp_expression> expr_;
+        std::string                     msg_;
+    };
+} // namespace cppast
+
+#endif // CPPAST_CPP_STATIC_ASSERT_HPP_INCLUDED