diff options
Diffstat (limited to 'lib/tools/emacs/erlang.el')
| -rw-r--r-- | lib/tools/emacs/erlang.el | 108 |
1 files changed, 58 insertions, 50 deletions
diff --git a/lib/tools/emacs/erlang.el b/lib/tools/emacs/erlang.el index bc7a190fb4..e2bcd37def 100644 --- a/lib/tools/emacs/erlang.el +++ b/lib/tools/emacs/erlang.el @@ -1,7 +1,13 @@ -;; erlang.el --- Major modes for editing and running Erlang +;;; erlang.el --- Major modes for editing and running Erlang + +;; Copyright (C) 2004 Free Software Foundation, Inc. +;; Author: Anders Lindgren +;; Keywords: erlang, languages, processes +;; Date: 2011-12-11 + ;; %CopyrightBegin% ;; -;; Copyright Ericsson AB 1996-2011. All Rights Reserved. +;; Copyright Ericsson AB 1996-2012. All Rights Reserved. ;; ;; The contents of this file are subject to the Erlang Public License, ;; Version 1.1, (the "License"); you may not use this file except in @@ -15,10 +21,7 @@ ;; under the License. ;; ;; %CopyrightEnd% -;; -;; Copyright (C) 2004 Free Software Foundation, Inc. -;; Author: Anders Lindgren -;; Keywords: erlang, languages, processes +;; ;; Lars Thors�n's modifications of 2000-06-07 included. ;; The original version of this package was written by Robert Virding. @@ -483,10 +486,6 @@ function.") "*Non-nil means TAB in Erlang mode should always re-indent the current line, regardless of where in the line point is when the TAB command is used.") -(defvar erlang-error-regexp-alist - '(("^\\([^:( \t\n]+\\)[:(][ \t]*\\([0-9]+\\)[:) \t]" . (1 2))) - "*Patterns for matching Erlang errors.") - (defvar erlang-man-inhibit (eq system-type 'windows-nt) "Inhibit the creation of the Erlang Manual Pages menu. @@ -1327,7 +1326,6 @@ Other commands: (erlang-menu-init) (erlang-mode-variables) (erlang-check-module-name-init) - (erlang-add-compilation-alist erlang-error-regexp-alist) (erlang-man-init) (erlang-tags-init) (erlang-font-lock-init) @@ -1443,31 +1441,6 @@ Other commands: (set (make-local-variable 'outline-level) (lambda () 1)) (set (make-local-variable 'add-log-current-defun-function) 'erlang-current-defun)) - - -;; Compilation. -;; -;; The following code is compatible with the standard package `compilation', -;; making it possible to go to errors using `erlang-next-error' (or just -;; `next-error' in Emacs 21). -;; -;; The normal `compile' command works of course. For best result, please -;; execute `make' with the `-w' flag. -;; -;; Please see the variables named `compiling-..' above. - -(defun erlang-add-compilation-alist (alist) - (require 'compile) - (cond ((boundp 'compilation-error-regexp-alist) ; Emacs 19 - (while alist - (or (assoc (car (car alist)) compilation-error-regexp-alist) - (setq compilation-error-regexp-alist - (cons (car alist) compilation-error-regexp-alist))) - (setq alist (cdr alist)))) - ((boundp 'compilation-error-regexp) - ;; Emacs 18, Only one regexp is allowed. - (funcall (symbol-function 'set) - 'compilation-error-regexp (car (car alist)))))) (defun erlang-font-lock-init () "Initialize Font Lock for Erlang mode." @@ -1516,7 +1489,7 @@ Other commands: ;; A dollar sign right before the double quote that ends a ;; string is not a character escape. ;; - ;; And a "string" has with a double quote not escaped by a + ;; And a "string" consists of a double quote not escaped by a ;; dollar sign, any number of non-backslash non-newline ;; characters or escaped backslashes, a dollar sign ;; (otherwise we wouldn't care) and a double quote. This @@ -1525,6 +1498,8 @@ Other commands: ;; know whether matching started inside a string: limiting ;; search to a single line keeps things sane. . (("\\(?:^\\|[^$]\\)\"\\(?:[^\"\n]\\|\\\\\"\\)*\\(\\$\\)\"" 1 "w") + ;; Likewise for atoms + ("\\(?:^\\|[^$]\\)'\\(?:[^'\n]\\|\\\\'\\)*\\(\\$\\)'" 1 "w") ;; And the dollar sign in $\" escapes two characters, not ;; just one. ("\\(\\$\\)\\\\\\\"" 1 "'")))))) @@ -2986,18 +2961,52 @@ This assumes that the preceding expression is either simple (forward-sexp (- arg)) (let ((col (current-column))) (skip-chars-backward " \t") - ;; Needed to match the colon in "'foo':'bar'". - (if (not (memq (preceding-char) '(?# ?:))) - col - ;; Special hack to handle: (note line break) - ;; [#myrecord{ - ;; foo = foo}] - (or - (ignore-errors - (backward-char 1) - (forward-sexp -1) - (current-column)) - col))))) + ;; Special hack to handle: (note line break) + ;; [#myrecord{ + ;; foo = foo}] + ;; where the call (forward-sexp -1) will fail when point is at the `#'. + (or + (ignore-errors + ;; Needed to match the colon in "'foo':'bar'". + (cond ((eq (preceding-char) ?:) + (backward-char 1) + (forward-sexp -1) + (current-column)) + ((eq (preceding-char) ?#) + ;; We may now be at: + ;; - either a construction of a new record + ;; - or update of a record, in which case we want + ;; the column of the expression to be updated. + ;; + ;; To see which of the two cases we are at, we first + ;; move an expression backwards, check for keywords, + ;; then immediately an expression forwards. Moving + ;; backwards skips past tokens like `,' or `->', but + ;; when moving forwards again, we won't skip past such + ;; tokens. We use this: if, after having moved + ;; forwards, we're back where we started, then it was + ;; a record update. + ;; The check for keywords is to detect cases like: + ;; case Something of #record_construction{...} + (backward-char 1) + (let ((record-start (point)) + (record-start-col (current-column))) + (forward-sexp -1) + (let ((preceding-expr-col (current-column)) + ;; white space definition according to erl_scan + (white-space "\000-\040\200-\240")) + (if (erlang-at-keyword) + ;; The (forward-sexp -1) call moved past a keyword + (1+ record-start-col) + (forward-sexp 1) + (skip-chars-forward white-space record-start) + ;; Are we back where we started? If so, it was an update. + (if (= (point) record-start) + preceding-expr-col + (goto-char record-start) + (1+ (current-column))))))) + (t col))) + col)))) (defun erlang-indent-parenthesis (stack-position) (let ((previous (erlang-indent-find-preceding-expr))) @@ -4860,7 +4869,6 @@ The following special commands are available: (set (make-local-variable 'compilation-old-error-list) nil)) ;; Needed when compiling directly from the Erlang shell. (setq compilation-last-buffer (current-buffer)) - (erlang-add-compilation-alist erlang-error-regexp-alist) (setq comint-prompt-regexp "^[^>=]*> *") (setq comint-eol-on-send t) (setq comint-input-ignoredups t) |