From: Philippe Proulx <eeppeliteloop@gmail.com>
Date: Tue, 12 Mar 2024 01:03:05 +0000 (-0400)
Subject: cpp-common/bt2c: add bt2c::contains()
X-Git-Url: https://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=237a48ad36b6aa04b32e4c41f22ce46c7245604f

cpp-common/bt2c: add bt2c::contains()

This new function template returns whether or not some STL container
contains some value instead of using the awkward find() and end()
methods each time.

Similar to new STL contains() methods of C++20.

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
Change-Id: Idea480f9001272dfaf1dc0df60251983be8f3962
---

diff --git a/src/Makefile.am b/src/Makefile.am
index 98d281a6..b66b1d6b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -153,6 +153,7 @@ cpp_common_libcpp_common_la_SOURCES = \
 	cpp-common/bt2c/align.hpp \
 	cpp-common/bt2c/c-string-view.hpp \
 	cpp-common/bt2c/call.hpp \
+	cpp-common/bt2c/contains.hpp \
 	cpp-common/bt2c/dummy.cpp \
 	cpp-common/bt2c/endian.hpp \
 	cpp-common/bt2c/exc.hpp \
diff --git a/src/cpp-common/bt2c/contains.hpp b/src/cpp-common/bt2c/contains.hpp
new file mode 100644
index 00000000..913cf1a3
--- /dev/null
+++ b/src/cpp-common/bt2c/contains.hpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2024 Philippe Proulx <pproulx@efficios.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef BABELTRACE_CPP_COMMON_BT2C_CONTAINS_HPP
+#define BABELTRACE_CPP_COMMON_BT2C_CONTAINS_HPP
+
+namespace bt2c {
+
+/*
+ * Returns whether or not the STL container `container` contains the
+ * value `val`.
+ */
+template <typename T, typename V>
+bool contains(const T& container, const V& val) noexcept
+{
+    return container.find(val) != container.end();
+}
+
+} /* namespace bt2c */
+
+#endif /* BABELTRACE_CPP_COMMON_BT2C_CONTAINS_HPP */