From 87d714407b0d2c8beebc4a5066b0cf5589eea223 Mon Sep 17 00:00:00 2001 From: Jimmy Olgeni Date: Mon, 26 Oct 2009 17:45:08 +0000 Subject: Improve Emacs indentation code (the try/after clause is now handled correctly.) Obtained from: Steve Vinoski --- lang/erlang14/Makefile | 1 + .../erlang14/files/patch-lib_tools_emacs_erlang.el | 207 +++++++++++++++++++++ 2 files changed, 208 insertions(+) create mode 100644 lang/erlang14/files/patch-lib_tools_emacs_erlang.el (limited to 'lang/erlang14') diff --git a/lang/erlang14/Makefile b/lang/erlang14/Makefile index 5138e2d2e2e9..38586689f07e 100644 --- a/lang/erlang14/Makefile +++ b/lang/erlang14/Makefile @@ -7,6 +7,7 @@ PORTNAME= erlang PORTVERSION= r13b02 +PORTREVISION= 1 PORTEPOCH= 1 CATEGORIES= lang parallel java MASTER_SITES= http://www.erlang.org/download/ \ diff --git a/lang/erlang14/files/patch-lib_tools_emacs_erlang.el b/lang/erlang14/files/patch-lib_tools_emacs_erlang.el new file mode 100644 index 000000000000..a2b8d9d1708b --- /dev/null +++ b/lang/erlang14/files/patch-lib_tools_emacs_erlang.el @@ -0,0 +1,207 @@ + +$FreeBSD$ + +--- lib/tools/emacs/erlang.el.orig ++++ lib/tools/emacs/erlang.el +@@ -3361,7 +3361,7 @@ + (erlang-pop stack)) + (if (and stack (memq (car (car stack)) '(icr begin))) + (erlang-pop stack)))) +- ((looking-at "catch[^,\n\\of]*\n") ++ ((looking-at "\\bcatch[^,\n\\of]*\n") + ;; Must pop top icr layer, `catch' in try/catch + ;;will push a new layer next. + (progn +@@ -3378,10 +3378,10 @@ + ;; (if (and stack (memq (car (car stack)) '(icr begin))) + ;; (erlang-pop stack)))) + ) +- (cond ((looking-at "\\(if\\|case\\|receive\\|try\\)[^_a-zA-Z0-9]") ++ (cond ((looking-at "\\b\\(if\\|case\\|receive\\|try\\)\\b") + ;; Must push a new icr (if/case/receive) layer. + (erlang-push (list 'icr token (current-column)) stack)) +- ((looking-at "\\(fun\\)[^_a-zA-Z0-9]") ++ ((looking-at "\\b\\(fun\\)\\b") + ;; Push a new icr layer if we are defining a `fun' + ;; expression, not when we are refering an existing + ;; function. +@@ -3390,7 +3390,7 @@ + (erlang-skip-blank to) + (eq (following-char) ?\()) + (erlang-push (list 'icr token (current-column)) stack))) +- ((looking-at "\\(begin\\|query\\)[^_a-zA-Z0-9]") ++ ((looking-at "\\b\\(begin\\|query\\)\\b") + (erlang-push (list 'begin token (current-column)) stack)) + ;; In test suites you may want to do something like + ;; ?match(Mem when integer(Mem), mnesia:table_info(Tab, +@@ -3399,22 +3399,22 @@ + ;; erlang mode to think the 'when' in the argument is a + ;; "real" when. The following three clauses will avoid + ;; this problem. +- ((looking-at "when[^->\.]*if[^->\.]*->")) +- ((looking-at "when[^->\.]*case[^->\.]*->")) +- ((looking-at "when[^->\.]*receive[^->\.]*->")) ++ ((looking-at "\\bwhen[^->\.]*if[^->\.]*->")) ++ ((looking-at "\\bwhen[^->\.]*case[^->\.]*->")) ++ ((looking-at "\\bwhen[^->\.]*receive[^->\.]*->")) + ;; Normal when case +- ((looking-at "when [^->\.]*->") ++ ((looking-at "\\bwhen [^->\.]*->") + (erlang-push (list 'when token (current-column)) stack)) +- ((looking-at "after[.]+->") ++ ((looking-at "\\bafter[.]+->") + (erlang-push (list 'icr token (current-column)) stack)) +- ((looking-at "after[^_a-zA-Z0-9->]") +- ;; Probably in try-statment, fake "->" to get right ++ ((looking-at "\\bafter\\b") ++ ;; Probably in try-statement, fake "->" to get right + ;; indentation in erlang-calculate-stack-indent. If it + ;; was an ordinary catch without try, these entries will + ;; be popped of the stack at a later ocaccion. + (erlang-push (list 'icr token (current-column)) stack) + (erlang-push (list '-> token (current-column)) stack)) +- ((looking-at "catch[^,\n\\of]*\n") ++ ((looking-at "\\bcatch[^,\n\\of]*\n") + (erlang-push (list 'icr token (current-column)) stack) + (erlang-push (list '-> token (current-column)) stack)) + ;;((looking-at "^of$") +@@ -3469,7 +3469,7 @@ + ((looking-at "->\\|:-") + (save-excursion + (back-to-indentation) +- (cond ((looking-at "after[^_a-zA-Z0-9]") ++ (cond ((looking-at "\\bafter\\b") + (erlang-pop stack)))) + (if (and stack (eq (car (car stack)) 'when)) + (erlang-pop stack)) +@@ -3580,7 +3580,7 @@ + ;; Return nil or t. + (eq (nth 3 state) 'comment)) + ((null stack) +- (if (looking-at "when[^_a-zA-Z0-9]") ++ (if (looking-at "\\bwhen\\b") + erlang-indent-guard + 0)) + ((eq (car stack-top) '\() +@@ -3608,28 +3608,34 @@ + ;; + ;; `after' should be indented to the save level as the + ;; corresponding receive. +- (if (looking-at "after[^_a-zA-Z0-9]") +- (nth 2 stack-top) +- (save-excursion +- (goto-char (nth 1 stack-top)) +- (if (looking-at "case[^_a-zA-Z0-9]") +- (+ (nth 2 stack-top) erlang-indent-level) +- (skip-chars-forward "a-z") +- (skip-chars-forward " \t") +- (if (memq (following-char) '(?% ?\n)) +- (+ (nth 2 stack-top) erlang-indent-level) +- (current-column))))) +- (if (looking-at "catch[^_a-zA-Z0-9]") +- (nth 2 stack-top) +- (save-excursion +- (goto-char (nth 1 stack-top)) +- (if (looking-at "case[^_a-zA-Z0-9]") +- (+ (nth 2 stack-top) erlang-indent-level) +- (skip-chars-forward "a-z") +- (skip-chars-forward " \t") +- (if (memq (following-char) '(?% ?\n)) +- (+ (nth 2 stack-top) erlang-indent-level) +- (current-column))))) ++ (let ((top-word (save-excursion ++ (goto-char (nth 1 stack-top)) ++ (looking-at "\\b\\(\\w+\\)\\b") ++ (match-string 0)))) ++ (if (and (looking-at "\\bafter\\b") ++ (not (string= top-word "try"))) ++ (if (string= top-word "case") ++ (+ (nth 2 stack-top) erlang-indent-level) ++ (save-excursion ++ (goto-char (nth 1 stack-top)) ++ (skip-chars-forward "a-z") ++ (skip-chars-forward " \t") ++ (if (memq (following-char) '(?% ?\n)) ++ (+ (nth 2 stack-top) erlang-indent-level) ++ (current-column))))) ++ (if (or (looking-at "\\bcatch\\b") ++ (and (looking-at "\\bafter\\b") ++ (string= top-word "try"))) ++ (nth 2 stack-top) ++ (if (string= top-word "case") ++ (+ (nth 2 stack-top) erlang-indent-level) ++ (save-excursion ++ (goto-char (nth 1 stack-top)) ++ (skip-chars-forward "a-z") ++ (skip-chars-forward " \t") ++ (if (memq (following-char) '(?% ?\n)) ++ (+ (nth 2 stack-top) erlang-indent-level) ++ (current-column)))))) + ) + ;; Real indentation, where operators create extra indentation etc. + ((memq (car stack-top) '(-> || begin)) +@@ -3638,7 +3644,8 @@ + ;; same line. If so use this indentation as base, else + ;; use parent indentation + 2 * level as base. + (let ((off erlang-indent-level) +- (skip 2)) ++ (skip 2) ++ (is-after (looking-at "\\bafter\\b"))) + (cond ((null (cdr stack))) ; Top level in function. + ((eq (car stack-top) 'begin) + (setq skip 5)) +@@ -3648,7 +3655,9 @@ + ;; Look at last thing to see how we are to move relative + ;; to the base. + (goto-char token) +- (cond ((looking-at "||\\|,\\|->\\|:-") ++ (cond ((and is-after (looking-at ",")) ++ off) ++ ((looking-at "||\\|,\\|->\\|:-") + base) + ((erlang-at-keyword) + (+ (current-column) erlang-indent-level)) +@@ -3665,7 +3674,7 @@ + ;; the block. (Here we have a choice: should + ;; the user be forced to reindent continued + ;; lines, or should the "end" be reindented?) +- ((looking-at "\\(end\\|after\\|catch\\)[^_a-zA-Z0-9]\\|$") ++ ((looking-at "\\b\\(end\\|after\\|catch\\)\\b\\|$") + (if (eq (car (car stack)) '->) + (erlang-pop stack)) + (if stack +@@ -3680,7 +3689,7 @@ + ) + ((eq (car stack-top) 'when) + (goto-char (nth 1 stack-top)) +- (if (looking-at "when\\s *\\($\\|%\\)") ++ (if (looking-at "\\bwhen\\s *\\($\\|%\\)") + (progn + (erlang-pop stack) + (if (and stack (eq (nth 0 (car stack)) 'icr)) +@@ -3757,13 +3766,13 @@ + + (defun erlang-at-keyword () + "Are we looking at an Erlang keyword which will increase indentation?" +- (looking-at (concat "\\(when\\|if\\|fun\\|case\\|begin\\|query\\|" +- "of\\|receive\\|after\\|catch\\)[^_a-zA-Z0-9]"))) ++ (looking-at (concat "\\b\\(when\\|if\\|fun\\|case\\|begin\\|query\\|" ++ "of\\|receive\\|after\\|catch\\)\\b"))) + + (defun erlang-at-operator () + "Are we looking at an Erlang operator?" + (looking-at +- "\\(bnot\\|div\\|mod\\|band\\|bor\\|bxor\\|bsl\\|bsr\\)[^_a-zA-Z0-9]")) ++ "\\b\\(bnot\\|div\\|mod\\|band\\|bor\\|bxor\\|bsl\\|bsr\\)\\b")) + + (defun erlang-comment-indent () + "Compute Erlang comment indentation. +@@ -4813,7 +4822,7 @@ + This function is designed to be a member of a criteria list." + (save-excursion + (erlang-skip-blank) +- (looking-at "end[^_a-zA-Z0-9]"))) ++ (looking-at "\\bend\\b"))) + + + ;; Erlang tags support which is aware of erlang modules. -- cgit v1.2.3