Language servers will now receive an open file instead of just its path. This
means the language servers no longer need to access the filesystem to open the
file themselves.
The C++ language server now has no filesystem access whatsoever (although we
might need to relax this in the future if it learns to complete #include paths),
while the Shell language server can read /etc/passwd (it wants that in order to
get the user's home directory) and browse (but not read!) the whole file system
tree for completing paths.
This makes most operations thread safe, especially so that they
can safely be used in the Kernel. This includes obtaining a strong
reference from a weak reference, which now requires an explicit
call to WeakPtr::strong_ref(). Another major change is that
Weakable::make_weak_ref() may require the explicit target type.
Previously we used reinterpret_cast in WeakPtr, assuming that it
can be properly converted. But WeakPtr does not necessarily have
the knowledge to be able to do this. Instead, we now ask the class
itself to deliver a WeakPtr to the type that we want.
Also, WeakLink is no longer specific to a target type. The reason
for this is that we want to be able to safely convert e.g. WeakPtr<T>
to WeakPtr<U>, and before this we just reinterpret_cast the internal
WeakLink<T> to WeakLink<U>, which is a bold assumption that it would
actually produce the correct code. Instead, WeakLink now operates
on just a raw pointer and we only make those constructors/operators
available if we can verify that it can be safely cast.
In order to guarantee thread safety, we now use the least significant
bit in the pointer for locking purposes. This also means that only
properly aligned pointers can be used.
Now when opening the project a search will be made for
a file with the extension cpp or js and opening it.
If not found, the first file will be opened.
Every widget now has a GUI::FocusPolicy that determines how it can
receive focus:
- NoFocus: The widget is not focusable (default)
- TabFocus: The widget can be focused using the tab key.
- ClickFocus: The widget can be focused by clicking on it.
- StrongFocus: Both of the above.
For widgets that have a focus proxy, getting/setting the focus policy
will affect the proxy instead.
This was a little banner that would pop up when running something in
the "Build" tab. It didn't look very good and it was mostly distracting
how it would pop in and out of the window.
When the cursor is immediately to the right of a token, the cursor's
column will be token.end.column + 1, so take this into account when
choosing which token to autocomplete.
Instead of files disappearing after you switch to something else,
we now keep track of them in a little ListView below the project tree.
You can return to any previously opened file by activating it in the
open files list. :^)
If a project contains "foo.cpp" but we can't open "foo.cpp", just go
with an empty text document for now, and we'll create "foo.cpp" when
the user saves.
Previously, the client would decide when to ask the server for
completions, and it would only do so for identifiers that had spans
(determined via the highlighter!).
Swap this around and make the server decide if it wants to complete
something.
This commit also adds a CompletionKind (which only has one value:
Identifier), to work with other kinds of completions as well.
This commit moves all the logic that deals with the language server
(from HackStudio) into a LanguageClient class, provides some functions
to make constructing them easier, and makes all language servers use a
singular IPC definition.
Also fixes the FIXME about making the autocompletion async.
This makes adding language servers in the future significantly less
duplicate-y, and significantly easier :^)
Editors now communicate with the c++ language server when openning and
editing c++ source files, and go through the language server to get
autocomplete suggestions.
The language server keeps track of the content of currently edited
files by receiving updates about edit actions.
Also, C++ autocompletion is no longer tied to HackStudio itself and
moved to be part of the language server.
Previously, when resolving the paths for the FormEditor widget icons
we didn't take into the account that calling class_name() returns the
widget name with a "GUI::" prefix.
Also, we now skip over widgets that we don't have an icon for.
CppAutoComplete gets a string of code and a position within it, and
returns a Vector of auto-complete suggestions that are relevant for the
given position.
Currently, it's very naive - it uses our CppLexer to find identifiers
in the code which the auto-complete target is a prefix of.
Previously, the strucutre of the HackStudio widgets made it so the
actions tab would be hidden when the "edit mode" was something other
than EditMode::Text (for example, when using the form editor).
