A new emacs d-mode from scratch

Charlie charlie.fats at gmail.com
Tue Mar 6 14:17:29 PST 2007


 > When Emacs 22 is
 > officially release with its cc-mode 5.3x, massive numbers of niche,
 > minimally-supported modes are going to break.

Yea , which apparently is right around the corner.  I've got a few modes 
that are probably going to break.

I'll let the php-mode guys know.

I hope nxml doesn't rely on cc-mode, then I'll be stuck with 21.

Charlie

Bill Baxter wrote:
> Charlie wrote:
>> Unfortunately the new cc-mode isn't compaitble with the existing 
>> php-mode :( , `Symbol's value as variable is void: c-symbol-key`
> 
> So stick with the old d-mode. And in the mean time, start bugging 
> whoever maintains the php-mode to update it for cc-mode 5.30.
> 
> It is rather annoying, though, that the cc-mode folks didn't come up 
> with some solution for maintaining backwards compatibility, like 
> side-by-side installs of both cc-mode versions.  When Emacs 22 is 
> officially release with its cc-mode 5.3x, massive numbers of niche, 
> minimally-supported modes are going to break.  And php isn't even really 
> niche.
> 
> --bb
> 
> 
>> Charlie
>>
>> Bill Baxter wrote:
>>> I made a new emacs mode.
>>> Here it is.
>>>
>>> For some reason I couldn't get it to show up properly on Wiki4D so 
>>> I'm attaching it here.
>>>
>>> --bb
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>> ;;; d-mode.el --- D Programming Language mode for (X)Emacs
>>> ;;;               Requires a cc-mode of version 5.30 or greater
>>>
>>> ;; Author:     2007 William Baxter
>>> ;; Maintainer: William Baxter
>>> ;; Created:    March 2007
>>> ;; Version:    2.0.0
>>> ;; Keywords:   D programming language emacs cc-mode
>>>
>>> ;; This program is free software; you can redistribute it and/or modify
>>> ;; it under the terms of the GNU General Public License as published by
>>> ;; the Free Software Foundation; either version 2 of the License, or
>>> ;; (at your option) any later version.
>>> ;; ;; This program is distributed in the hope that it will be useful,
>>> ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
>>> ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>>> ;; GNU General Public License for more details.
>>> ;; ;; You should have received a copy of the GNU General Public License
>>> ;; along with this program; see the file COPYING.  If not, write to
>>> ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
>>> ;; Boston, MA 02111-1307, USA.
>>>
>>> ;; Usage: ;; Put these lines in your .emacs startup file.
>>> ;;   (autoload 'd-mode "d-mode" "Major mode for editing D code." t)
>>> ;;   (add-to-list 'auto-mode-alist '("\\.d[i]?\\'" . d-mode))
>>> ;;
>>> ;; cc-mode version 5.30 or greater is required.
>>> ;; You can check your cc-mode with the command M-x c-version.
>>> ;; You can get the latest version of cc-mode at 
>>> http://cc-mode.sourceforge.net
>>> ;;
>>> ;; Commentary:
>>> ;;   This mode supports most of D's syntax, including nested /+ +/
>>> ;;   comments and backquote `string literals`.
>>> ;;   ;;   This mode has been dubbed "2.0" because it is a complete 
>>> rewrite
>>> ;;   from scratch.  The previous d-mode was based on cc-mode 5.28 or
>>> ;;   so.  This version is based on the cc-mode 5.30 derived mode
>>> ;;   example by Martin Stjernholm, 2002.
>>> ;;
>>> ;;
>>> ;; TODO:
>>> ;;   * "else static if" doesn't work properly. ;;     (Incidentally 
>>> "static else if" is fine, but unfortunately it's
>>> ;;      not valid D syntax.)
>>> ;;
>>> ;;   * I tried making "with" "version" and "extern" be their own
>>> ;;     c-other-block-decl-kwds.  Which is supposed to mean that you
>>> ;;     can control the indentation on the block following them
>>> ;;     individually.  It didn't seem to work right though.
>>> ;;
>>> ;; History:
>>> ;;   * 2007 March 3 - Release of 2.0.0 version
>>>
>>> ;;---------------------------------------------------------------------------- 
>>>
>>> ;; Code:
>>>
>>> (require 'cc-mode)
>>>
>>> ;; These are only required at compile time to get the sources for the
>>> ;; language constants.  (The cc-fonts require and the font-lock
>>> ;; related constants could additionally be put inside an
>>> ;; (eval-after-load "font-lock" ...) but then some trickery is
>>> ;; necessary to get them compiled.)
>>> ;; Coment out 'when-compile part for debugging
>>> (eval-when-compile
>>>   (require 'cc-langs)
>>>   (require 'cc-fonts)
>>> )
>>>
>>> (eval-and-compile
>>>   ;; Make our mode known to the language constant system.  Use Java
>>>   ;; mode as the fallback for the constants we don't change here.
>>>   ;; This needs to be done also at compile time since the language
>>>   ;; constants are evaluated then.
>>>   (c-add-language 'd-mode 'java-mode))
>>>
>>> (c-lang-defconst c-identifier-ops
>>>   ;; For recognizing "~this", ".foo", and "foo.bar.baz" as identifiers
>>>   d '((prefix "~")(prefix ".")(left-assoc ".")))
>>>
>>> (c-lang-defconst c-after-id-concat-ops
>>>   ;; Also for handling ~this
>>>   d '("~"))
>>>
>>> (c-lang-defconst c-string-escaped-newlines
>>>   ;; Set to true to indicate the D handles backslash escaped newlines 
>>> in strings
>>>   d t)
>>>
>>> (c-lang-defconst c-multiline-string-start-char
>>>   ;; Set to true to indicate that D doesn't mind raw embedded 
>>> newlines in strings
>>>   d t)
>>>
>>> (c-lang-defconst c-opt-cpp-prefix
>>>   ;; Preprocssor directive recognizer.  D doesn't have cpp, but it 
>>> has #line
>>>   d "\\s *#\\s *")
>>>
>>> (c-lang-defconst c-cpp-message-directives d nil)
>>> (c-lang-defconst c-cpp-include-directives d nil)
>>> (c-lang-defconst c-opt-cpp-macro-define d nil)
>>> (c-lang-defconst c-cpp-expr-directives d nil)
>>> (c-lang-defconst c-cpp-expr-functions d nil)
>>>
>>> (c-lang-defconst c-assignment-operators
>>>   ;; List of all assignment operators.
>>>   d  '("=" "*=" "/=" "%=" "+=" "-=" ">>=" "<<=" ">>>=" "&=" "^=" "|=" 
>>> "~="))
>>>
>>> (c-lang-defconst c-other-op-syntax-tokens
>>>   "List of the tokens made up of characters in the punctuation or
>>> parenthesis syntax classes that have uses other than as expression
>>> operators."
>>>   d (append '("/+" "+/" "..." ".." "!" "*" "&")
>>>         (c-lang-const c-other-op-syntax-tokens)))
>>>   (c-lang-defconst c-block-comment-starter d "/*")
>>> (c-lang-defconst c-block-comment-ender   d "*/")
>>>
>>> (c-lang-defconst c-comment-start-regexp  d "/[*+/]")
>>> (c-lang-defconst c-block-comment-start-regexp d "/[*+]")
>>> (c-lang-defconst c-literal-start-regexp  ;; Regexp to match the start 
>>> of comments and string literals.
>>>  d "/[*+/]\\|\"\\|`")
>>>
>>> (c-lang-defconst c-doc-comment-start-regexp
>>>  ;; doc comments for D use "///",  "/**" or doxygen's "/*!" "//!"
>>>  d "/\\(\\*[*!]\\|/[/!]\\)")
>>>
>>> ;;---------------------------------------------------------------------------- 
>>>
>>>
>>> ;; Built-in basic types
>>> (c-lang-defconst c-primitive-type-kwds
>>>   d '("bit" "byte" "ubyte" "char" "delegate" "double" "float" 
>>> "function"       "int" "long" "ubyte" "short" "uint" "ulong" "ushort" 
>>> "cent" "ucent"       "real" "ireal" "ifloat" "creal" "cfloat" "cdouble"
>>>       "wchar" "dchar" "void"))
>>>
>>> ;; Keywords that can prefix normal declarations of identifiers
>>> (c-lang-defconst c-modifier-kwds
>>>   d '("auto" "abstract" "const" "deprecated" "extern"       "final" 
>>> "lazy" "private" "protected" "public"
>>>       "scope" "static" "synchronized" "volatile" "mixin"))
>>>
>>> (c-lang-defconst c-class-decl-kwds
>>>   ;; Keywords introducing declarations where the following block (if 
>>> any)
>>>   ;; contains another declaration level that should be considered a 
>>> class.
>>>   d '("class" "struct" "union" "interface" "template"))
>>>
>>> (c-lang-defconst c-brace-list-decl-kwds
>>>   d '("enum"))
>>>
>>> (c-lang-defconst c-type-modifier-kwds
>>>   d '("const" "lazy" "volatile")
>>> )
>>> (c-lang-defconst c-type-prefix-kwds
>>>   ;; Keywords where the following name - if any - is a type name, and
>>>   ;; where the keyword together with the symbol works as a type in
>>>   ;; declarations.  In this case, like "mixin foo!(x) bar;"
>>>   d    '("mixin" "align"))
>>>
>>> ;;(c-lang-defconst c-other-block-decl-kwds
>>> ;;  ;; Keywords where the following block (if any) contains another
>>> ;;  ;; declaration level that should not be considered a class.
>>> ;;  ;; Each of these has associated offsets e.g. ;;  ;;   
>>> 'with-open', 'with-close' and 'inwith' ;;  ;; that can be customized 
>>> individually
>>> ;;  ;;   TODO: maybe also do this for 'static if' ?  in/out?
>>> ;;  ;;   TODO: figure out how to make this work properly
>>> ;;  d '("with" "version" "extern"))
>>>
>>> (c-lang-defconst c-typedef-decl-kwds
>>>   d (append (c-lang-const c-typedef-decl-kwds)
>>>         '("typedef" "alias")))
>>>
>>> (c-lang-defconst c-decl-hangon-kwds
>>>   d '("export"))
>>>
>>> (c-lang-defconst c-protection-kwds
>>>   ;; Access protection label keywords in classes.
>>>   d '("export" "private" "package" "protected" "public"))
>>>
>>> ;;(c-lang-defconst c-postfix-decl-spec-kwds
>>> ;;  ;Keywords introducing extra declaration specifiers in the region
>>> ;;  ;between the header and the body (i.e. the "K&R-region") in
>>> ;;  ;declarations.
>>> ;;; This doesn't seem to have any effect.  They aren't exactly 
>>> "K&R-regions".
>>> ;;  d '("in" "out" "body"))
>>>
>>> (c-lang-defconst c-type-list-kwds
>>>   d '("import"))
>>>
>>> (c-lang-defconst c-ref-list-kwds
>>>   d '("module"))
>>>
>>> (c-lang-defconst c-colon-type-list-kwds
>>>   ;; Keywords that may be followed (not necessarily directly) by a colon
>>>   ;; and then a comma separated list of type identifiers.
>>>   d  '("class" "enum"))
>>>
>>> (c-lang-defconst c-paren-nontype-kwds
>>>   ;;Keywords that may be followed by a parenthesis expression that 
>>> doesn't
>>>   ;; contain type identifiers.
>>>   d '("version" "extern"))
>>>
>>> (c-lang-defconst c-paren-type-kwds
>>>   ;; Keywords that may be followed by a parenthesis expression 
>>> containing
>>>   ;; type identifiers separated by arbitrary tokens.
>>>   d  '("throw"))
>>>
>>> (c-lang-defconst c-block-stmt-1-kwds
>>>   ;; Statement keywords followed directly by a substatement.
>>>   ;; 'static' is there for the "else static if (...) {}" usage.
>>>   d '("do" "else" "finally" "try" "in" "out" "debug" "body"))
>>>
>>> (c-lang-defconst c-block-stmt-2-kwds
>>>   ;; Statement keywords followed by a paren sexp and then by a 
>>> substatement.
>>>   d '("for" "if" "switch" "while" "catch" "synchronized" "scope"
>>>       "foreach" "foreach_reverse" "with"))
>>>
>>> (c-lang-defconst c-simple-stmt-kwds
>>>   ;; Statement keywords followed by an expression or nothing.
>>>   d '("break" "continue" "goto" "return" "throw"))
>>>
>>> (c-lang-defconst c-paren-stmt-kwds
>>>   ;; Statement keywords followed by a parenthesis expression that
>>>   ;; nevertheless contains a list separated with ';' and not ','."
>>>   d '("for" "foreach" "foreach_reverse"))
>>>
>>> (c-lang-defconst c-asm-stmt-kwds
>>>   ;; Statement keywords followed by an assembler expression.
>>>   d '("asm"))
>>>
>>> (c-lang-defconst c-label-kwds
>>>   ;; Keywords introducing colon terminated labels in blocks.
>>>   d '("case" "default"))
>>>
>>> (c-lang-defconst c-before-label-kwds
>>>   ;; Keywords that might be followed by a label identifier.
>>>   d    '("goto" "break" "continue"))
>>>
>>> (c-lang-defconst c-constant-kwds
>>>   ;; Keywords for constants.
>>>   d '("null" "true" "false"))
>>>
>>> (c-lang-defconst c-primary-expr-kwds
>>>   ;; Keywords besides constants and operators that start primary 
>>> expressions.
>>>   d '("this" "super"))
>>>
>>> (c-lang-defconst c-inexpr-class-kwds
>>>   ;; Keywords that can start classes inside expressions.
>>>   d    nil)
>>>
>>> (c-lang-defconst c-inexpr-brace-list-kwds
>>>   ;; Keywords that can start brace list blocks inside expressions.
>>>   d    nil)
>>>
>>> (c-lang-defconst c-other-decl-kwds
>>>   d '("module" "import"))
>>>
>>> (c-lang-defconst c-other-kwds
>>>   ;; Keywords not accounted for by any other `*-kwds' language constant.
>>>   d '("assert"))
>>>
>>>
>>> (defcustom d-font-lock-extra-types nil
>>>   "*List of extra types (aside from the type keywords) to recognize 
>>> in D mode.
>>> Each list item should be a regexp matching a single identifier.")
>>>
>>> (defconst d-font-lock-keywords-1 (c-lang-const c-matchers-1 d)
>>>   "Minimal highlighting for D mode.")
>>>
>>> (defconst d-font-lock-keywords-2 (c-lang-const c-matchers-2 d)
>>>   "Fast normal highlighting for D mode.")
>>>
>>> (defconst d-font-lock-keywords-3 (c-lang-const c-matchers-3 d)
>>>   "Accurate normal highlighting for D mode.")
>>>
>>> (defvar d-font-lock-keywords d-font-lock-keywords-3
>>>   "Default expressions to highlight in D mode.")
>>>
>>> (defvar d-mode-syntax-table nil
>>>   "Syntax table used in d-mode buffers.")
>>> (or d-mode-syntax-table
>>>     (setq d-mode-syntax-table
>>>      (let ((table (funcall (c-lang-const c-make-mode-syntax-table d))))
>>>        ;; Make it recognize D `backquote strings`
>>>        (modify-syntax-entry ?` "\"" table)
>>>
>>>        ;; Make it recognize D's nested /+ +/ comments        
>>> (modify-syntax-entry ?+  ". 23n"   table)
>>>        table)))
>>>
>>> (defvar d-mode-abbrev-table nil
>>>   "Abbreviation table used in d-mode buffers.")
>>> (c-define-abbrev-table 'd-mode-abbrev-table
>>>   ;; Use the abbrevs table to trigger indentation actions   ;; on 
>>> keywords that, if they occur first on a line, might alter the
>>>   ;; syntactic context.
>>>   ;; Syntax for abbrevs is:
>>>   ;; ( pattern replacement command initial-count)
>>>   '(("else" "else" c-electric-continued-statement 0)
>>>     ("while" "while" c-electric-continued-statement 0)
>>>     ("catch" "catch" c-electric-continued-statement 0)
>>>     ("finally" "finally" c-electric-continued-statement 0)))
>>>
>>> (defvar d-mode-map ()
>>>   "Keymap used in d-mode buffers.")
>>> (if d-mode-map
>>>     nil
>>>   (setq d-mode-map (c-make-inherited-keymap))
>>>   ;; Add bindings which are only useful for D
>>>   ;; (define-key d-mode-map "\C-c\C-e"  'd-cool-function)
>>>   )
>>>
>>> (c-lang-defconst c-mode-menu
>>>   ;; The definition for the mode menu.  The menu title is prepended to
>>>   ;; this before it's fed to `easy-menu-define'.
>>>   t `(["Comment Out Region"     comment-region
>>>        (c-fn-region-is-active-p)]
>>>       ["Uncomment Region"       (comment-region (region-beginning)
>>>                         (region-end) '(4))
>>>        (c-fn-region-is-active-p)]
>>>       ["Indent Expression"      c-indent-exp
>>>        (memq (char-after) '(?\( ?\[ ?\{))]
>>>       ["Indent Line or Region"  c-indent-line-or-region t]
>>>       ["Fill Comment Paragraph" c-fill-paragraph t]
>>>       "----"
>>>       ["Backward Statement"     c-beginning-of-statement t]
>>>       ["Forward Statement"      c-end-of-statement t]
>>>       "----"
>>>       ("Toggle..."
>>>        ["Syntactic indentation" c-toggle-syntactic-indentation
>>>     :style toggle :selected c-syntactic-indentation]
>>>        ["Electric mode"         c-toggle-electric-state
>>>     :style toggle :selected c-electric-flag]
>>>        ["Auto newline"          c-toggle-auto-newline
>>>     :style toggle :selected c-auto-newline]
>>>        ["Hungry delete"         c-toggle-hungry-state
>>>     :style toggle :selected c-hungry-delete-key]
>>>        ["Subword mode"          c-subword-mode
>>>     :style toggle :selected (and (boundp 'c-subword-mode)
>>>                                      c-subword-mode)])))
>>>
>>> (easy-menu-define d-menu d-mode-map "D Mode Commands"
>>>   (cons "D" (c-lang-const c-mode-menu d)))
>>>
>>> ;;---------------------------------------------------------------------------- 
>>>
>>> ;;;###autoload (add-to-list 'auto-mode-alist '("\\.d[i]?\\'" . d-mode))
>>>
>>> ;;;###autoload
>>> (defun d-mode ()
>>>   "Major mode for editing code written in the D Programming Language.
>>> See http://www.digitalmars.com/d for more information about the D 
>>> language.
>>> The hook `c-mode-common-hook' is run with no args at mode
>>> initialization, then `d-mode-hook'.
>>>
>>> Key bindings:
>>> \\{d-mode-map}"
>>>   (interactive)
>>>   (kill-all-local-variables)
>>>   (c-initialize-cc-mode t)
>>>   (set-syntax-table d-mode-syntax-table)
>>>   (setq major-mode 'd-mode
>>>     mode-name "D"
>>>     local-abbrev-table d-mode-abbrev-table
>>>     abbrev-mode t)
>>>   (use-local-map d-mode-map)
>>>   (c-init-language-vars d-mode)
>>>   (c-common-init 'd-mode)
>>>   (easy-menu-add d-menu)
>>>   (c-run-mode-hooks 'c-mode-common-hook 'd-mode-hook)
>>>   (c-update-modeline))
>>>
>>> 
>>> (provide 'd-mode)
>>>
>>> ;;; d-mode.el ends here



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