pw_function: Standard callback API
This implements pw::Function, a standard wrapper for callable objects.
This CL is currently provided as a proof-of-concept implementation based
on fbl::Function, and does not necessarily represent the final design of
pw::Function.
Change-Id: Ie2f5714b9711a08de878471e8f31fc46b26d36e8
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/46080
Reviewed-by: Keir Mierle <keir@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Commit-Queue: Alexei Frolov <frolv@google.com>
diff --git a/pw_function/BUILD b/pw_function/BUILD
new file mode 100644
index 0000000..768cc3c
--- /dev/null
+++ b/pw_function/BUILD
@@ -0,0 +1,47 @@
+# Copyright 2021 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+load(
+ "//pw_build:pigweed.bzl",
+ "pw_cc_library",
+ "pw_cc_test",
+)
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"]) # Apache License 2.0
+
+pw_cc_library(
+ name = "config",
+ hdrs = ["public/pw_function/config.h"],
+ includes = ["public"],
+)
+
+pw_cc_library(
+ name = "pw_function",
+ srcs = ["public/pw_function/internal/function.h"],
+ hdrs = ["public/pw_function/function.h"],
+ includes = ["public"],
+ deps = [
+ ":config",
+ "//pw_assert",
+ "//pw_preprocessor",
+ ],
+)
+
+pw_cc_test(
+ name = "function_test",
+ srcs = ["function_test.cc"],
+ deps = [":pw_function"],
+)