Android build was dated, using the Android.mk approach. Current
project configuration on Android encourages the usage of CMake, so we
are updating the android project as an example on how to use either the
Java/Kotlin generate code or the native C++ one.
* Added internal - limited - implementation of flatbuffers::unique_ptr
for STLs that don't ship with std::unique_ptr. In C++11 and beyond
this is just an alias for std::unique_ptr.
* Aliased used type traits structs is_scalar is_floating_point is_unsigned
into flatbuffers namespace so they can be replaced in C++98 implementations.
Right now these point at stlport's TR1 implementations.
* Wrapped vector::data() in vector_data().
* Wrapped vector::emplace_back() in vector_emplace_back().
* Wrapper string::back() in string_back().
* Added variants of FlatBufferBuilder::CreateVector() and
FlatBufferBuilder::CreateVectorOfStructs() that allow the use of plain
function pointers.
Generated code has also been modified to use plain functions to build objects
rather than std::function() so all generated code will work in C++98
applications.
* Added flexbuffers::Builder::Vector(), flexbuffers::Builder::TypedVector()
and flexbuffers::Builder::Map() methods that allow the use of plain function
pointers.
* Changed Parser to internally use plain function pointers when parsing table
and vector delimiters.
* Added specializations of NumToString() for 64-bit types that aren't supported
by stringstream in stlport.
* Overloaded numeric_limits for 64-bit types not supported by stlport.
* Replaced build_apk.sh (which was broken by deprecation of the
"android" tool in the Android SDK) with build.gradle and the
appropriate gradle wrapper to build an APK.
* Switched Android build to build against all STL variants.
* Updated travis configuration to build Android test and sample.
Tested:
* Verified all tests continue to work on Linux, OSX and Android.
* Verified Travis build is green.
Change-Id: I9e634363793f85b9f141d21454b10686020a2065