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Support specifying extra VM arguments for the Java Language server #800

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Support specifying extra VM arguments for the Java Language server #800

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22 changes: 15 additions & 7 deletions eglot.el
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Original file line number Diff line number Diff line change
Expand Up @@ -3005,6 +3005,13 @@ If NOERROR, return predicate, else erroring function."

;;; eclipse-jdt-specific
;;;
(defcustom eglot-eclipse-jdt-vmargs '()
"Configure Java VM to tune its behaviour or support particular libraries.
For example, if you are a Lombok user, you can specify the argument needed here.
You can also specify some arguments to reduce memory consumption,
see https://github.com/redhat-developer/vscode-java/pull/1262 for more details."
:type '(repeat string))

(defclass eglot-eclipse-jdt (eglot-lsp-server) ()
:documentation "Eclipse's Java Development Tools Language Server.")

Expand Down Expand Up @@ -3083,13 +3090,14 @@ If INTERACTIVE, prompt user for details."
(unless (file-directory-p workspace)
(make-directory workspace t))
(cons 'eglot-eclipse-jdt
(list (executable-find "java")
"-Declipse.application=org.eclipse.jdt.ls.core.id1"
"-Dosgi.bundles.defaultStartLevel=4"
"-Declipse.product=org.eclipse.jdt.ls.core.product"
"-jar" jar
"-configuration" config
"-data" workspace)))))
`(,(executable-find "java")
"-Declipse.application=org.eclipse.jdt.ls.core.id1"
"-Dosgi.bundles.defaultStartLevel=4"
"-Declipse.product=org.eclipse.jdt.ls.core.product"
,@eglot-eclipse-jdt-vmargs
"-jar" ,jar
"-configuration" ,config
"-data" ,workspace)))))

(cl-defmethod eglot-execute-command
((_server eglot-eclipse-jdt) (_cmd (eql java.apply.workspaceEdit)) arguments)
Expand Down