In the end this is a nicer API than having separate has_{value,target}()
and having to check those first, and then making another Optional from
the unwrapped value:
completion.has_value() ? completion.value() : Optional<Value> {}
// ^^^^^^^^^^^^^^^^^^
// Implicit creation of non-empty Optional<Value>
This way we need to unwrap the optional ourselves, but can easily pass
it to something else as well.
This is in anticipation of the AST using completions :^)
When selecting a cell in the spreadsheet that was added
automatically as per the InfinitelyScrollableTableView
implementation, the background color is now filled correctly.
Previously, when navigating horizontally in a spreadsheet, after
a certain point the cells would not have the same background fill
color as the user would have experienced in the previous column
ranges (A-Z).
This is partially a revert of commits:
10a8b6d411561b67a1ad
Rather than adding the prot_exec pledge requried to use dlopen(), we can
link directly against LibUnicodeData in applications that we know need
that library.
This might make the dlopen() dance a bit unnecessary. The same purpose
might now be fulfilled with weak symbols. That can be revisted next, but
for now, this at least removes the potential security risk of apps like
the Browser having prot_exec privileges.
Loading libunicodedata.so will require dlopen(), which in turn requires
mmap(). The 'prot_exec' pledge is needed for this.
Further, the .so itself must be unveiled for reading. The "real" path is
unveiled (libunicodedata.so.serenity) as the symlink (libunicodedata.so)
itself cannot be unveiled.
Cell::set_data(String new_data) now checks whether the cell is a
formula-cell and the new_data is an empty string. If this is case, it
will no longer simply return and will now instead actually set the
cell's contents to an empty string.
This fixes an error whereupon committing the string "=" to a cell, it
would not be possible to directly delete the cell's contents. Instead,
it first had to be overwritten with another string, which then could be
deleted.
This could probably be done more elegantly. Right now, I believe,
writing the string "=" to a (formula-)cell already containing an
identical string will result in the cell being marked as dirty, even
though nothing actually changed.
We should use .to_string() and handle the possible exceptions.
This makes the displayed cell contents so much more informative than
'[object Object]' :^)
Now we give each sheet its own interpreter and realm, and only make them
share the VM.
This is to prepare for the next commit, which will be refactoring a
bunch of things to propagate exceptions via ThrowCompletionOr<T>.
The worksheet's realm does not change, and is not shared, so we can
safely leave the global environment be.
This fixes lexical scoping in the spreadsheet's runtime file.
Also add slightly richer parse errors now that we can include a string
literal with returned errors.
This will allow us to use TRY() when working with JSON data.
The old versions were renamed to JS_DECLARE_OLD_NATIVE_FUNCTION and
JS_DEFINE_OLD_NATIVE_FUNCTION, and will be eventually removed once all
native functions were converted to the new format.
Previously, all the code to add menus and actions was in main().
This was messy and didn't allow us to reference the actions from
SpreadsheetWidget, which is needed in order to add a toolbar.
This commit moves the menu and action adding code to method on
SpreadsheetWidget called initialize_menubar() which is based upon
applications such as TextEditor which have identically named methods
doing the same thing.
In additon, clipboard_action(), previouly a lambda in main(), has also
been made into a method on SpreadsheetWidget since it would otherwise
be destroyed when it goes out of scope. (This was previously avoided by
declaring the lambda in main() so it's always in scope.)
Because we declare the functions in runtime.js we need the correct
global object to be setup otherwise they cannot be accessed when
switching to the SheetGlobalObject.
Before this commit it only allocated the global object so when it wanted
to lookup 'thisSheet' it could not find it in the global environment.
We now hotswap the global object everytime a cell evaluated.
This also fixes that SheetGlobalObject did not have an
internal_has_property meaning 'A0' could not be referenced unless it was
via a member lookup (this.A0). This was already broken before the
bindings refactoring.
The correct behavior of realms in spreadsheet is not completely clear
since what is shared between sheets is not very well defined.
The reason that just setting the SheetGlobalObject as the
global_this_value is not enough is because ECMAScript does not check the
global_this_value for members when resolving a reference in the global
environment.
Our existing implementation did not check the element type of the other
pointer in the constructors and move assignment operators. This meant
that some operations that would require explicit casting on raw pointers
were done implicitly, such as:
- downcasting a base class to a derived class (e.g. `Kernel::Inode` =>
`Kernel::ProcFSDirectoryInode` in Kernel/ProcFS.cpp),
- casting to an unrelated type (e.g. `Promise<bool>` => `Promise<Empty>`
in LibIMAP/Client.cpp)
This, of course, allows gross violations of the type system, and makes
the need to type-check less obvious before downcasting. Luckily, while
adding the `static_ptr_cast`s, only two truly incorrect usages were
found; in the other instances, our casts just needed to be made
explicit.
