Background: lstrip and rstrip were broken by changes to String in:
0e29f7974b
which removed it's access to Vector::find(CharType).
Moved Vector's find up into CowData so it can be shared by Vector and String.
Added String::find_char using CowData::find.
Implemented rstrip and lstrip using find_char.
Added a few tests for String rstrip and lstrip.
As per the C++ standard 21.3.4.1 for std::string:
Returns: If pos < size(), returns data()[pos]. Otherwise, if pos ==
size(), the const version returns charT(). Otherwise, the behavior is
undefined.
Since the behavior is undefined Godot now does the same thing for const
and non-const versions of operator[].
This fixes#21242 and fixes#22221.
Relying on various compiler primitives we can reduce the work done
in our memory allocators and CowData. For types with trivial ctors or
dtors we can skip looping over all elements when creating, resizing,
and destroying lists of objects.
These primitives are supported by clang, msvc, and GCC. However, once
we've moved to C++11 we can rely on several std:: primitives that do
the same thing and are standardized.
In my testing the extra conditionals introduced here get removed from
the generated program entirely as the results for these primitives is
known at compile time.
When opening projects for edition through the project manager, the
following checks are now done:
1. If the config_version is lower than the one used by the current
engine version, users are asked if they want to convert to the new
format or abort editing. Fixes#20626.
2. If the config_version is higher than the expected one (project
from a more recent and incompatible engine version), projects are
grayed out and can't be edited. Fixes#18758.
When editing from the command line, the behaviour is unchanged:
projects in situation (1) are automatically converted, while projects
in situation (2) show an error message (made more explicit).
The "Run" option from the project manager was not changed, so it will
still run (1) projects without converting them, and fail running (2)
projects.
Co-authored-by: groud <gilles.roudiere@gmail.com>
By introducing an intermediate proxy class for the array subscript
operator for String and CharString we can control better when CowData
will actually CoW.
This should improve performance of String usage for most cases.
By relying on the fact that a struct or class's first member has the
same address as the struct itself we can cast VectorWriteProxy<T> to
Vector<T> and access the CowData field.
This allows a Vector to be moved in memory without invalidating the
pointer to the cowdata field.
