This MR adds a new configuration variable `g:ale_java_javalsp_config`
that allows to configure external dependencies and class paths to the
language server.
The variable accepts a dictionary similar to the one supported by the
[vscode/settings.json](https://github.com/georgewfraser/java-language-server#settings)
file.
Deprecates: #2561
Checkstyle xml configuration is mandatory and not providing one causes
the tool to fail with the following error:
Must specify a config XML file.
Checkstyle itself contains a default configuration as part of its
assests named `/google_checks.xml`. Invoking checkstyle with this config
works even if such file does not exists in the file system:
checkstyle -c /google_checks.xml
This should be the default invocation to allow ALE to use checkstyle
with zero configuration.
Also when a user sets `g:ale_java_checkstyle_config` option, ALE should
use it to invoke checkstyle even such file does not exists in the
filesystem. This is because checkstyle is able to use configuration files
within JAR files defined in the CLASSPATH. The default `/google_checks.xml`
is an example of such configuration available within a JAR resource.
The command used to invoke the language server is missing some options
to include additional java modules. Without these modules the server
was not working properly.
The correct command can be found in a `launcher` script on the same
directory the `java` executable for the language server is found.
This commit changes the docs to prefer the launcher script over the java
executable. For backward compatibility it also fixes the command
invocation in case the java executable is configured.
We were setting the -data parameter to the project root but this caused
the language server to fail initialization and synch of gradle
dependencies. As consequence ALE failed to work fully on gradle
projects.
This fix sets the workspace to the parent folder of the project root.
Normally this corresponds to the correct Eclipse workspace path.
When this is not the case, this fix also allows users to explicitly set
the absolute path to the workspace via configuration variable.
* Search eclipselsp jar and config files within system package path
* Allow setting an alternate eclipselsp configuration directory
* Add test for ale_java_eclipselsp_config_path
- Set default value to $HOME/eclipse.jdt.ls
- Make JAR search regexp more specific.
- Allow to set the VSCode extensions folder as ale_java_eclipselsp_path.
The command used to invoke the LSP process was being escaped wrong.
Also added a new option to set a different java executable and fixed the
documentation.
