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@dakrone dakrone/java.el
Created Oct 21, 2015

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;; via http://emacs.stackexchange.com/questions/17327/how-to-have-c-offset-style-correctly-detect-a-java-constructor-and-change-indent
(defun my/point-in-defun-declaration-p ()
(let ((bod (save-excursion (c-beginning-of-defun)
(point))))
(<= bod
(point)
(save-excursion (goto-char bod)
(re-search-forward "{")
(point)))))
(defun my/is-string-concatenation-p ()
"Returns true if the previous line is a string concatenation"
(save-excursion
(let ((start (point)))
(forward-line -1)
(if (re-search-forward " \\\+$" start t) t nil))))
(defun my/inside-java-lambda-p ()
"Returns true if point is the first statement inside of a lambda"
(save-excursion
(c-beginning-of-statement-1)
(let ((start (point)))
(forward-line -1)
(if (search-forward " -> {" start t) t nil))))
(defun my/arglist-cont-nonempty-indentation (arg)
(if (my/inside-java-lambda-p)
'+
(if (my/is-string-concatenation-p)
16 ;; TODO don't hard-code
(unless (my/point-in-defun-declaration-p) '++))))
(defun my/statement-block-intro (arg)
(if (and (c-at-statement-start-p) (my/inside-java-lambda-p)) 0 '+))
(defun my/block-close (arg)
(if (my/inside-java-lambda-p) '- 0))
(defconst intellij-java-style
'((c-basic-offset . 4)
(c-comment-only-line-offset . (0 . 0))
;; the following preserves Javadoc starter lines
(c-offsets-alist
.
((inline-open . 0)
(topmost-intro-cont . +)
(statement-block-intro . my/statement-block-intro)
(block-close . my/block-close)
(knr-argdecl-intro . +)
(substatement-open . +)
(substatement-label . +)
(case-label . +)
(label . +)
(statement-case-open . +)
(statement-cont . ++)
(arglist-intro . 0)
(arglist-cont-nonempty . (my/arglist-cont-nonempty-indentation
c-lineup-arglist))
(arglist-close . --)
(inexpr-class . 0)
(access-label . 0)
(inher-intro . ++)
(inher-cont . ++)
(brace-list-intro . +)
(func-decl-cont . ++))))
"Elasticsearch's Intellij Java Programming Style")
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