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;;; d-mode.el --- D Programming Language major mode for (X)Emacs
;;; Requires a cc-mode of version 5.30 or greater
;; Author: William Baxter
;; Contributor: Andrei Alexandrescu
;; Contributor: Russel Winder
;; Maintainer: Russel Winder <>
;; Vladimir Panteleev <>
;; Created: March 2007
;; Version: 201804041719
;; Keywords: D programming language emacs cc-mode
;; Package-Requires: ((emacs "24.3"))
;;;; NB Version number is date and time yyyymmddhhMM UTC.
;;;; A hook to update it automatically on save is available here:
;; This file is not part of GNU Emacs.
;; 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
;; 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 init file.
;; (autoload 'd-mode "d-mode" "Major mode for editing D code." t)
;; (add-to-list 'auto-mode-alist '("\\.d[i]?\\'" . d-mode))
;; Alternatively you can load d-mode.el explicitly:
;; (load "d-mode.el")
;; 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
;;; 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.
;;; Bugs:
;; Bug tracking is currently handled using the GitHub issue tracker at
;;; Versions:
;; This mode is available on MELPA which tracks the mainline Git repository on GitHub, so there is a
;; rolling release system based on commits to the mainline. For those wanting releases, the repository is
;; tagged from time to time and this creates an entry in MELPA Stable and a tarball on GitHub.
;;; Notes:
;;; TODO:
;; Issues with this code are managed via the project issue management
;; on GitHub:
;;; History:
;; History is tracked in the Git repository rather than in this file.
;; See
;;; Code:
(require 'cc-mode)
;; Needed to prevent
;; "Symbol's value as variable is void: compilation-error-regexp-alist-alist" errors
(require 'compile)
;; Work around Emacs (cc-mode) bug #18845
(when (and (= emacs-major-version 24) (>= emacs-minor-version 4))
(require 'cl)))
;; The set-difference function is used from the Common Lisp extensions.
(require 'cl-lib)
;; Used to specify regular expressions in a sane way.
(require 'rx)
;; 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.)
;; Comment out 'when-compile part for debugging
(require 'cc-langs)
(require 'cc-fonts)
;; 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))
;; muffle the warnings about using free variables and undefined
;; functions
(defvar c-syntactic-element)
(declare-function c-populate-syntax-table "cc-langs.el" (table))
;; D has pointers
(c-lang-defconst c-type-decl-prefix-key
d (concat "\\("
(c-lang-const c-type-decl-prefix-key)
;; D has fixed arrays
(c-lang-defconst c-opt-type-suffix-key
d "\\(\\[[^]]*\\]\\|\\.\\.\\.\\)")
(c-lang-defconst c-identifier-ops
;; For recognizing "~this", ".foo", and "" 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
;; Preprocessor 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
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-block-prefix-disallowed-chars
;; Allow ':' for inherit list starters.
d (cl-set-difference (c-lang-const c-block-prefix-disallowed-chars)
(defconst doxygen-font-lock-doc-comments
(let ((symbol "[a-zA-Z0-9_]+")
(header "^ \\* "))
`((,(concat header "\\(" symbol "\\):[ \t]*$")
1 ,c-doc-markup-face-name prepend nil)
(,(concat symbol "()")
0 ,c-doc-markup-face-name prepend nil)
(,(concat header "\\(" "@" symbol "\\):")
1 ,c-doc-markup-face-name prepend nil)
(,(concat "[#%@]" symbol)
0 ,c-doc-markup-face-name prepend nil))
(defconst doxygen-font-lock-keywords
`((,(lambda (limit)
(c-font-lock-doc-comments "/\\+[+!]\\|/\\*[*!]\\|//[/!]" limit
;;; Patterns to recognize the compiler generated messages
(defun d-mode-add-dmd-message-pattern (expr level symbol)
"Register DMD `compile' pattern for an error level.
EXPR is the `rx' message sub-expression indicating the error level LEVEL.
The expression is added to `compilation-error-regexp-alist' and
`compilation-error-regexp-alist-alist' as SYMBOL."
(group-n 1 (one-or-more any)) ; File name
(group-n 2 (one-or-more digit)) ; Line number
(group-n 3 (one-or-more digit))) ; Column number
"): "
(group-n 4 (one-or-more nonl)) ; Message
1 2 3 ,level 4))
(add-to-list 'compilation-error-regexp-alist symbol))
(d-mode-add-dmd-message-pattern "Error: " 2 'dmd-error )
(d-mode-add-dmd-message-pattern "Warning: " 1 'dmd-warning )
(d-mode-add-dmd-message-pattern "Deprecation: " 1 'dmd-deprecation )
(d-mode-add-dmd-message-pattern '(one-or-more " ") 0 'dmd-continuation)
;; The following regexp recognizes messages generated by the D runtime for
;; unhandled exceptions (e.g. assert failures).
(add-to-list 'compilation-error-regexp-alist-alist
1 2 nil 2))
(add-to-list 'compilation-error-regexp-alist 'd-exceptions)
;; Built-in basic types
(c-lang-defconst c-primitive-type-kwds
d '("bool" "byte" "ubyte" "char" "delegate" "double" "float"
"function" "int" "long" "short" "uint" "ulong" "ushort"
"cent" "ucent" "real" "ireal" "idouble" "ifloat" "creal" "cfloat" "cdouble"
"wchar" "dchar" "void" "string" "wstring" "dstring"))
;; Keywords that can prefix normal declarations of identifiers
(c-lang-defconst c-modifier-kwds
d '("__gshared" "abstract" "deprecated" "extern"
"final" "in" "out" "inout" "lazy" "mixin" "override" "private"
"protected" "public" "ref" "scope" "shared" "static" "synchronized"
"volatile" "__vector"))
(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 '("__gshared" "inout" "lazy" "shared" "volatile"
"invariant" "enum" "__vector"))
(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 '("deprecated" "static" "extern" "final" "synchronized" "override"
"abstract" "scope" "inout" "shared" "__gshared"
"private" "package" "protected" "public" "export"))
;;(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" "interface"))
(c-lang-defconst c-paren-nontype-kwds
;;Keywords that may be followed by a parenthesis expression that doesn't
;; contain type identifiers.
d '("version" "debug" "extern" "macro" "mixin"))
(c-lang-defconst c-paren-type-kwds
;; Keywords that may be followed by a parenthesis expression containing
;; type identifiers separated by arbitrary tokens.
d '("delete" "throw"))
(c-lang-defconst c-block-stmt-1-kwds
;; Statement keywords followed directly by a substatement.
d '("do" "else" "finally" "try" "in" "out" "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" "unittest"))
(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 '("__gshared" "__traits" "assert" "cast" "is" "nothrow" "pure" "ref"
"sizeof" "typeid" "typeof"))
(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."
:group 'd-mode)
(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.")
(defun d-font-lock-keywords-2 ()
(c-compose-keywords-list d-font-lock-keywords-2))
(defun d-font-lock-keywords-3 ()
(c-compose-keywords-list d-font-lock-keywords-3))
(defun d-font-lock-keywords ()
(c-compose-keywords-list d-font-lock-keywords))
(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)
(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
(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
["Uncomment Region" (comment-region (region-beginning)
(region-end) '(4))
["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]
["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)
(easy-menu-define d-menu d-mode-map "D Mode Commands"
(cons "D" (c-lang-const c-mode-menu d)))
(defconst d-imenu-method-name-pattern
;; Whitespace
(zero-or-more space)
;; Conditionals
(zero-or-more space))
(zero-or-more space)
(zero-or-more space)
(one-or-more (any "a-zA-Z0-9_"))
(zero-or-more space)
(zero-or-more space))
;; Qualifiers
(one-or-more (any "a-z_@()C+"))
(one-or-more space))
;; Type
(one-or-more (any "a-zA-Z0-9_.*![]()")))
(one-or-more space)
;; Function name
(one-or-more (any "a-zA-Z0-9_")))
(zero-or-more space)
;; Type arguments
"(" (zero-or-more (not (any ")"))) ")"
(zero-or-more space))
;; Arguments
(zero-or-more (not (any "()")))
(zero-or-more (not (any "()")))
(zero-or-more (not (any "()"))))
(zero-or-more (any " \t\n"))
;; Pure/const etc.
(one-or-more (any "a-z@"))
(zero-or-more (any " \t\n")))
(zero-or-more not-newline)
(zero-or-more space))
;; ';' or 'if' or '{'
(zero-or-more (any " \t\n"))
(or "if" "{")))
(defun d-imenu-method-index-function ()
(let ((pt))
(setq pt (re-search-backward d-imenu-method-name-pattern nil t))
;; The method name regexp will match lines like
;; "return foo(x);" or "static if(x) {"
;; so we exclude type name 'static' or 'return' here
(while (let ((type (match-string 1)))
(and pt type
(string-match (c-lang-const c-regular-keywords-regexp) type))))
(setq pt (re-search-backward d-imenu-method-name-pattern nil t)))
;; Do not count invisible definitions.
(let ((invis (invisible-p (point))))
(or (not invis)
(while (and invis
(not (bobp)))
(setq invis (not (re-search-backward
d-imenu-method-name-pattern nil 'move))))
(not invis))))))
(defvar d-imenu-generic-expression
(zero-or-more (syntax whitespace))
(or "final" "abstract" "private" "package" "protected" "public" "export" "static")
(one-or-more (syntax whitespace)))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z)))))
(zero-or-more (syntax whitespace))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z)))))
(zero-or-more (syntax whitespace))
(or "private" "package" "protected" "public" "export" "static")
(one-or-more (syntax whitespace)))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z)))))
(zero-or-more (syntax whitespace))
(one-or-more (syntax whitespace)))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z)))))
(zero-or-more (syntax whitespace))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z))))
(zero-or-more (any " \t\n"))
(or ":" "{"))
;; NB: We can't easily distinguish aliases declared outside
;; functions from local ones, so just search for those that are
;; declared at the beginning of lines.
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z))))
(zero-or-more (syntax whitespace))
(one-or-more (syntax whitespace))
(not (any ";")))
(one-or-more (syntax whitespace))
(any ?_
(?0 . ?9)
(?A . ?Z)
(?a . ?z))))
(zero-or-more (syntax whitespace))
(zero-or-more (syntax whitespace))
(nil d-imenu-method-index-function 2)))
;;; Workaround for special case of 'else static if' not being handled properly
(defun d-special-case-looking-at (orig-fun &rest args)
(let ((rxp (car args)))
(if (and (stringp rxp) (string= rxp "if\\>[^_]"))
(or (apply orig-fun '("static\\>\\s-+if\\>[^_]"))
(apply orig-fun '("version\\>[^_]"))
(apply orig-fun '("debug\\>[^_]"))
(apply orig-fun args))
(apply orig-fun args))))
(defun d-around--c-add-stmt-syntax (orig-fun &rest args)
(if (not (string= major-mode "d-mode"))
(apply orig-fun args)
(add-function :around (symbol-function 'looking-at)
(apply orig-fun args)
(remove-function (symbol-function 'looking-at)
(when (version<= "24.4" emacs-version)
(advice-add 'c-add-stmt-syntax :around #'d-around--c-add-stmt-syntax))
(add-to-list 'auto-mode-alist '("\\.d[i]?\\'" . d-mode))
;; Custom variables
(defcustom d-mode-hook nil
"*Hook called by `d-mode'."
:type 'hook
:group 'c)
(define-derived-mode d-mode prog-mode "D"
"Major mode for editing code written in the D Programming Language.
See 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:
(c-initialize-cc-mode t)
(setq local-abbrev-table d-mode-abbrev-table
abbrev-mode t)
(use-local-map d-mode-map)
(c-init-language-vars d-mode)
(when (fboundp 'c-make-noise-macro-regexps)
;; Generate a function that applies D-specific syntax properties.
;; Concretely, inside back-quoted string literals the backslash
;; character '\' is treated as a punctuation symbol. See help for
;; syntax-propertize-rules function for more information.
(when (version<= "24.3" emacs-version)
(not (any "`\\"))))
(submatch "\\")
(not (any "`\\"))))))
(1 ".")))))
(c-common-init 'd-mode)
(easy-menu-add d-menu)
(c-run-mode-hooks 'c-mode-common-hook 'd-mode-hook)
(cc-imenu-init d-imenu-generic-expression))
;; "Hideous hacks" to support appropriate font-lock behaviour.
;; * auto/const/immutable: If we leave them in c-modifier-kwds (like
;; c++-mode) then in the form "auto var;" var will be highlighted in
;; type name face. Moving auto/immutable to font-lock-add-keywords
;; lets cc-mode seeing them as a type name, so the next symbol can
;; be fontified as a variable.
;; * public/protected/private appear both in c-modifier-kwds and in
;; c-protection-kwds. This causes cc-mode to fail parsing the first
;; declaration after an access level label (because cc-mode trys to
;; parse them as modifier but will fail due to the colon). But
;; unfortunately we cannot remove them from either c-modifier-kwds
;; or c-protection-kwds. Removing them from the former causes valid
;; syntax like "private int foo() {}" to fail. Removing them from
;; the latter cause indentation of the access level labels to
;; fail. The solution used here is to use font-lock-add-keywords to
;; add back the syntax highlight.
(defconst d-var-decl-pattern "^[ \t]*\\(?:[_a-zA-Z0-9]+[ \t\n]+\\)*\\([_a-zA-Z0-9.!]+\\)\\(?:\\[[^]]*\\]\\|\\*\\)?[ \t\n]+\\([_a-zA-Z0-9]+\\)[ \t\n]*[;=]")
(defconst d-fun-decl-pattern "^[ \t]*\\(?:[_a-zA-Z0-9]+[ \t\n]+\\)*\\([_a-zA-Z0-9.!]+\\)\\(?:\\[[^]]*\\]\\|\\*\\)?[ \t\n]+\\([_a-zA-Z0-9]+\\)[ \t\n]*(")
(defmacro d-try-match-decl (regex)
`(let ((pt))
(setq pt (re-search-forward ,regex limit t))
(while (let ((type (match-string 1)))
(and pt type
(string-match (c-lang-const c-regular-keywords-regexp) type))))
(setq pt (re-search-forward ,regex limit t)))
(defun d-match-var-decl (limit)
(d-try-match-decl d-var-decl-pattern))
(defun d-match-fun-decl (limit)
(d-try-match-decl d-fun-decl-pattern))
(defun d-match-auto (limit)
(c-syntactic-re-search-forward "\\<\\(auto\\|const\\|immutable\\)\\>" limit t))
'((d-match-auto 1 font-lock-keyword-face t)
(d-match-var-decl (1 font-lock-type-face) (2 font-lock-variable-name-face))
(d-match-fun-decl (1 font-lock-type-face) (2 font-lock-function-name-face)))
;; Support for "Adjusting Alignment Rules for UCFS-Chains in D",
;; cf.
;; The code here was originally created by Sergei Nosov
;; ( based on the c-lineup-cascaded-calls code, see
;; StackOverflow, and then amended by Nordlöw ( it
;; provides a function that people can make use of in their d-mode-hook thus:
;; (add-hook 'd-mode-hook 'd-setup-cascaded-call-indentation)
(defun d-setup-cascaded-call-indentation ()
"Set up `d-lineup-cascaded-calls'."
(add-to-list 'c-offsets-alist '(arglist-cont-nonempty . d-lineup-cascaded-calls))
(add-to-list 'c-offsets-alist '(statement-cont . d-lineup-cascaded-calls)))
(defun d-lineup-cascaded-calls (langelem)
"This is a modified `c-lineup-cascaded-calls' function for the
D programming language which accounts for optional parenthesis
and compile-time parameters in function calls."
(if (and (eq (c-langelem-sym langelem) 'arglist-cont-nonempty)
(not (eq (c-langelem-2nd-pos c-syntactic-element)
(c-most-enclosing-brace (c-parse-state)))))
;; The innermost open paren is not our one, so don't do
;; anything. This can occur for arglist-cont-nonempty with
;; nested arglist starts on the same line.
(let ((operator (and (looking-at "\\.")
(regexp-quote (match-string 0))))
(stmt-start (c-langelem-pos langelem)) col)
(when (and operator
(looking-at operator)
(or (and
(zerop (c-backward-token-2 1 t stmt-start))
(eq (char-after) ?\()
(zerop (c-backward-token-2 2 t stmt-start))
(looking-at operator))
(zerop (c-backward-token-2 1 t stmt-start))
(looking-at operator))
(zerop (c-backward-token-2 1 t stmt-start))
(looking-at operator))
(setq col (current-column))
(while (or (and
(zerop (c-backward-token-2 1 t stmt-start))
(eq (char-after) ?\()
(zerop (c-backward-token-2 2 t stmt-start))
(looking-at operator))
(zerop (c-backward-token-2 1 t stmt-start))
(looking-at operator))
(zerop (c-backward-token-2 1 t stmt-start))
(looking-at operator))
(setq col (current-column)))
(vector col))))))
(provide 'd-mode)
;;; d-mode.el ends here