Add android::base::expected

android::base::expected is an Android implementation of the
std::expected proposal.
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0323r7.html

For usage, refer to the expected.h header file and
expected_test.cpp

Bug: 132145659
Test: libbase_test

Change-Id: I65d3a1ecf8654d9858989755dfd0065c81f7b209

parent de725e6e

base/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -131,6 +131,7 @@ cc_test {
		"cmsg_test.cpp",
		"endian_test.cpp",
		"errors_test.cpp",
		"expected_test.cpp",
		"file_test.cpp",
		"logging_test.cpp",
		"macros_test.cpp",

base/expected_test.cpp

0 → 100644

+745 −0

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base/include/android-base/expected.h

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+600 −0

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