o We can retain -Weffc++ and specify default initializers by using
initializer lists. The risks are low (of additional non-conformat
compilers), because there is already one other such initialization
used in the code-base.
o An (-'ve valued, typically -1) EOF must never be allowed in
token_string, as it be converted to 255 -- a legitimate value.
o Comparing against a specific eof() (-1, typically) is more costly than
detecting +'ve/-'ve. Since EOF is the only non-positive value allowed
we can use the simpler test.
o Removed unnecessary test for token_string size, as it is already
tested in the method, and must never occur in correct code; used an
assert instead.
o Return its contents when necessary. In many cases, this avoids
construction of multiple copies of the yytext token. Exceeds
performance of current develop branch.
o Use std::streambuf I/O instead of std::istream; does not maintain
(unused) istream flags.
o Further simplify get/unget handling.
o Restore original handling of NUL in input stream; ignored during
token_string escaping.
The CBOR and MessagePack parsers now expect the input to be read until the end. Unless the new parameter "strict" is set to false (it is true by default), an exception is raised if the parser ends prematurely. This is a breaking change as the parsers ignored unread input so far.
Furthermore, the offset/startIndex paramter introduced in #462 was removed as this behavior can be mimicked with an iterator range. For instance, instead of calling "from_cbor(vec, 5);", you can write "from_cbor({vec.begin()+5, vec.end()});".
o To prevent the compilation issue on OSX with the intel compiler suite. The
error was found with icpc version 15.0.3.187 where the "__clang_version__" was
not defined correctly, while "__clang__" was.
