Replace Maybe with std::optional
With c++17, std::optional provides the functionality that Maybe
provided.
Bug: 183215655
Test: aapt2_tests
Change-Id: I62bb9c2fa4985dc5217a6ed153df92b85ad9a034
diff --git a/tools/aapt2/cmd/Util.h b/tools/aapt2/cmd/Util.h
index 2a7c62e..1b98eb4 100644
--- a/tools/aapt2/cmd/Util.h
+++ b/tools/aapt2/cmd/Util.h
@@ -26,14 +26,14 @@
#include "SdkConstants.h"
#include "filter/ConfigFilter.h"
#include "split/TableSplitter.h"
-#include "util/Maybe.h"
#include "xml/XmlDom.h"
namespace aapt {
// Parses a configuration density (ex. hdpi, xxhdpi, 234dpi, anydpi, etc).
// Returns Nothing and logs a human friendly error message if the string was not legal.
-Maybe<uint16_t> ParseTargetDensityParameter(const android::StringPiece& arg, IDiagnostics* diag);
+std::optional<uint16_t> ParseTargetDensityParameter(const android::StringPiece& arg,
+ IDiagnostics* diag);
// Parses a string of the form 'path/to/output.apk:<config>[,<config>...]' and fills in
// `out_path` with the path and `out_split` with the set of ConfigDescriptions.
@@ -59,8 +59,8 @@
const SplitConstraints& constraints);
// Extracts relevant info from the AndroidManifest.xml.
-Maybe<AppInfo> ExtractAppInfoFromBinaryManifest(const xml::XmlResource& xml_res,
- IDiagnostics* diag);
+std::optional<AppInfo> ExtractAppInfoFromBinaryManifest(const xml::XmlResource& xml_res,
+ IDiagnostics* diag);
// Returns a copy of 'name' which conforms to the regex '[a-zA-Z]+[a-zA-Z0-9_]*' by
// replacing nonconforming characters with underscores.