-;;; f90.el --- Fortran-90 mode (free format)
-
-;; Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
-
-;; Author: Torbj\"orn Einarsson <Torbjorn.Einarsson@era.ericsson.se>
-;; Maintainer: Dave Love <fx@gnu.org>
-;; Keywords: fortran, f90, languages
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs 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, or (at your option)
-;; any later version.
-
-;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
-
-;;; Commentary:
-
-;; Smart mode for editing F90 programs in FREE FORMAT.
-;; Knows about continuation lines, named structured statements, and other
-;; new features in F90 including HPF (High Performance Fortran) structures.
-;; The basic feature is to provide an accurate indentation of F90 programs.
-;; In addition, there are many more features like automatic matching of all
-;; end statements, an auto-fill function to break long lines, a join-lines
-;; function which joins continued lines etc etc.
-;; To facilitate typing, a fairly complete list of abbreviations is provided.
-;; For example, `i is short-hand for integer (if abbrev-mode is on).
-
-;; There are two separate features for highlighting the code.
-;; 1) Upcasing or capitalizing of all keywords.
-;; 2) Colors/fonts using font-lock-mode. (only when using X-windows)
-;; Automatic upcase of downcase of keywords is controlled by the parameter
-;; f90-auto-keyword-case.
-
-;; The indentations of lines starting with ! is determined by the first of the
-;; following matches (the values in the left column are the default values):
-
-;; start-string/regexp indent variable holding start-string/regexp
-;; !!! 0
-;; !hpf\\$ (re) 0 f90-directive-comment-re
-;; !!$ 0 f90-comment-region
-;; ! (re) as code f90-indented-comment-re
-;; default comment-column
-
-;; Ex: Here is the result of 3 different settings of f90-indented-comment-re
-;; f90-indented-comment-re !-indentation !!-indentation
-;; ! as code as code
-;; !! comment-column as code
-;; ![^!] as code comment-column
-;; Trailing comments are indented to comment-column with indent-for-comment M-;
-;; f90-comment-region (C-c;) toggles insertion of f90-comment-region in region.
-
-;; One common convention for free vs. fixed format is that free-format files
-;; have the ending .f90 while the fixed format files have the ending .f.
-;; To make f90-mode work, put this file in, for example, your directory
-;; ~/lisp, and be sure that you have the following in your .emacs-file
-;; (setq load-path (append load-path '("~/lisp")))
-;; (autoload 'f90-mode "f90"
-;; "Major mode for editing Fortran 90 code in free format." t)
-;; (setq auto-mode-alist (append auto-mode-alist
-;; (list '("\\.f90$" . f90-mode))))
-;; Once you have entered f90-mode, you may get more info by using
-;; the command describe-mode (C-h m). For online help describing various
-;; functions use C-h f <Name of function you want described>
-
-;; To customize the f90-mode for your taste, use, for example:
-;; (you don't have to specify values for all the parameters below)
-;;(add-hook 'f90-mode-hook
-;; '(lambda () (setq f90-do-indent 3
-;; f90-if-indent 3
-;; f90-type-indent 3
-;; f90-program-indent 2
-;; f90-continuation-indent 5
-;; f90-comment-region "!!$"
-;; f90-directive-comment-re "!hpf\\$"
-;; f90-indented-comment-re "!"
-;; f90-break-delimiters "[-+\\*/,><=% \t]"
-;; f90-break-before-delimiters t
-;; f90-beginning-ampersand t
-;; f90-smart-end 'blink
-;; f90-auto-keyword-case nil
-;; f90-leave-line-no nil
-;; f90-startup-message t
-;; indent-tabs-mode nil
-;; f90-font-lock-keywords f90-font-lock-keywords-2
-;; )
-;; ;;The rest is not default.
-;; (abbrev-mode 1) ; turn on abbreviation mode
-;; (f90-add-imenu-menu) ; extra menu with functions etc.
-;; (if f90-auto-keyword-case ; change case of all keywords on startup
-;; (f90-change-keywords f90-auto-keyword-case))
-;; ))
-;; in your .emacs file (the shown values are the defaults). You can also
-;; change the values of the lists f90-keywords etc.
-;; The auto-fill and abbreviation minor modes are accessible from the menu,
-;; or by using M-x auto-fill-mode and M-x abbrev-mode, respectively.
-
-;; Remarks
-;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
-;; non-nil, the line numbers are never touched.
-;; 2) Multi-; statements like > do i=1,20 ; j=j+i ; end do < are not handled
-;; correctly, but I imagine them to be rare.
-;; 3) Regexps for hilit19 are no longer supported.
-;; 4) For FIXED FORMAT code, use the ordinary fortran mode.
-;; 5) This mode does not work under emacs-18.x.
-;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
-;; and are untouched by all case-changing commands. There is, at present, no
-;; mechanism for treating multi-line directives (continued by \ ).
-;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
-;; You are urged to use f90-do loops (with labels if you wish).
-;; 8) The highlighting mode under XEmacs is not as complete as under Emacs.
-
-;; List of user commands
-;; f90-previous-statement f90-next-statement
-;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
-;; f90-comment-region
-;; f90-indent-line f90-indent-new-line
-;; f90-indent-region (can be called by calling indent-region)
-;; f90-indent-subprogram
-;; f90-break-line f90-join-lines
-;; f90-fill-region
-;; f90-insert-end
-;; f90-upcase-keywords f90-upcase-region-keywords
-;; f90-downcase-keywords f90-downcase-region-keywords
-;; f90-capitalize-keywords f90-capitalize-region-keywords
-;; f90-add-imenu-menu
-;; f90-font-lock-1, f90-font-lock-2, f90-font-lock-3, f90-font-lock-4
-
-;; Thanks to all the people who have tested the mode. Special thanks to Jens
-;; Bloch Helmers for encouraging me to write this code, for creative
-;; suggestions as well as for the lists of hpf-commands.
-;; Also thanks to the authors of the fortran and pascal modes, on which some
-;; of this code is built.
-
-;;; Code:
-
-;; User options
-
-(defgroup f90 nil
- "Fortran-90 mode"
- :group 'languages)
-
-(defgroup f90-indent nil
- "Fortran-90 indentation"
- :prefix "f90-"
- :group 'f90)
-
-
-(defcustom f90-do-indent 3
- "*Extra indentation applied to DO blocks."
- :type 'integer
- :group 'f90-indent)
-
-(defcustom f90-if-indent 3
- "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks."
- :type 'integer
- :group 'f90-indent)
-
-(defcustom f90-type-indent 3
- "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks."
- :type 'integer
- :group 'f90-indent)
-
-(defcustom f90-program-indent 2
- "*Extra indentation applied to PROGRAM/MODULE/SUBROUTINE/FUNCTION blocks."
- :type 'integer
- :group 'f90-indent)
-
-(defcustom f90-continuation-indent 5
- "*Extra indentation applied to F90 continuation lines."
- :type 'integer
- :group 'f90-indent)
-
-(defcustom f90-comment-region "!!$"
- "*String inserted by \\[f90-comment-region]\
- at start of each line in region."
- :type 'string
- :group 'f90-indent)
-
-(defcustom f90-indented-comment-re "!"
- "*Regexp saying which comments to be indented like code."
- :type 'regexp
- :group 'f90-indent)
-
-(defcustom f90-directive-comment-re "!hpf\\$"
- "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented."
- :type 'regexp
- :group 'f90-indent)
-
-(defcustom f90-beginning-ampersand t
- "*t makes automatic insertion of \& at beginning of continuation line."
- :type 'boolean
- :group 'f90)
-
-(defcustom f90-smart-end 'blink
- "*From an END statement, check and fill the end using matching block start.
-Allowed values are 'blink, 'no-blink, and nil, which determine
-whether to blink the matching beginning."
- :type '(choice (const blink) (const no-blink) (const nil))
- :group 'f90)
-
-(defcustom f90-break-delimiters "[-+\\*/><=,% \t]"
- "*Regexp holding list of delimiters at which lines may be broken."
- :type 'regexp
- :group 'f90)
-
-(defcustom f90-break-before-delimiters t
- "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters."
- :type 'boolean
- :group 'f90)
-
-(defcustom f90-auto-keyword-case nil
- "*Automatic case conversion of keywords.
- The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil"
- :type '(choice (const downcase-word) (const upcase-word)
- (const capitalize-word) (const nil))
- :group 'f90)
-
-(defcustom f90-leave-line-no nil
- "*If nil, left-justify linenumbers."
- :type 'boolean
- :group 'f90)
-
-(defcustom f90-startup-message t
- "*Non-nil displays a startup message when F90 mode is first called."
- :type 'boolean
- :group 'f90)
-
-(defconst f90-keywords-re
- ;;("allocate" "allocatable" "assign" "assignment" "backspace" "block"
- ;;"call" "case" "character" "close" "common" "complex" "contains"
- ;;"continue" "cycle" "data" "deallocate" "dimension" "do" "double" "else"
- ;;"elseif" "elsewhere" "end" "enddo" "endfile" "endif" "entry" "equivalence"
- ;;"exit" "external" "forall" "format" "function" "goto" "if" "implicit"
- ;;"include" "inquire" "integer" "intent" "interface" "intrinsic" "logical"
- ;;"module" "namelist" "none" "nullify" "only" "open" "operator" "optional" "parameter"
- ;;"pause" "pointer" "precision" "print" "private" "procedure" "program"
- ;;"public" "read" "real" "recursive" "result" "return" "rewind" "save" "select"
- ;;"sequence" "stop" "subroutine" "target" "then" "type" "use" "where"
- ;;"while" "write")
- (concat
- "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|b\\(ackspace\\|"
- "lock\\)\\|c\\(a\\(ll\\|se\\)\\|haracter\\|lose\\|o\\(m\\(mon\\|plex\\)\\|"
- "nt\\(ains\\|inue\\)\\)\\|ycle\\)\\|d\\(ata\\|eallocate\\|imension\\|"
- "o\\(\\|uble\\)\\)\\|e\\(lse\\(\\|if\\|where\\)\\|n\\(d\\(\\|do\\|file\\|"
- "if\\)\\|try\\)\\|quivalence\\|x\\(it\\|ternal\\)\\)\\|f\\(or\\(all\\|"
- "mat\\)\\|unction\\)\\|goto\\|i\\(f\\|mplicit\\|n\\(clude\\|quire\\|t\\("
- "e\\(ger\\|nt\\|rface\\)\\|rinsic\\)\\)\\)\\|logical\\|module\\|n\\("
- "amelist\\|one\\|ullify\\)\\|o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|p\\(a\\("
- "rameter\\|use\\)\\|ointer\\|r\\(ecision\\|i\\(nt\\|vate\\)\\|o\\("
- "cedure\\|gram\\)\\)\\|ublic\\)\\|re\\(a[dl]\\|cursive\\|sult\\|turn\\|wind\\)\\|"
- "s\\(ave\\|e\\(lect\\|quence\\)\\|top\\|ubroutine\\)\\|t\\(arget\\|hen\\|"
- "ype\\)\\|use\\|w\\(h\\(ere\\|ile\\)\\|rite\\)\\)\\>")
- "Regexp for F90 keywords.")
-
-(defconst f90-keywords-level-3-re
- ;; ("allocate" "allocatable" "assign" "assignment" "backspace" "close"
- ;; "deallocate" "dimension" "endfile" "entry" "equivalence" "external"
- ;; "inquire" "intent" "intrinsic" "nullify" "only" "open" "operator"
- ;; "optional" "parameter" "pause" "pointer" "print" "private" "public"
- ;; "read" "recursive" "result" "rewind" "save" "select" "sequence"
- ;; "target" "write")
- (concat
- "\\<\\(a\\(llocat\\(able\\|e\\)\\|ssign\\(\\|ment\\)\\)\\|backspace\\|"
- "close\\|d\\(eallocate\\|imension\\)\\|e\\(n\\(dfile\\|try\\)\\|"
- "quivalence\\|xternal\\)\\|"
- "in\\(quire\\|t\\(ent\\|rinsic\\)\\)\\|nullify\\|"
- "o\\(nly\\|p\\(en\\|erator\\|tional\\)\\)\\|"
- "p\\(a\\(rameter\\|use\\)\\|ointer\\|ri\\(nt\\|vate\\)\\|ublic\\)\\|re\\("
- "ad\\|cursive\\|sult\\|wind\\)\\|s\\(ave\\|e\\(lect\\|quence\\)\\)\\|target\\|"
- "write\\)\\>")
-"Keyword-regexp for font-lock level >= 3.")
-
-
-(defconst f90-procedures-re
- ;; ("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint" "all" "allocated"
- ;; "anint" "any" "asin" "associated" "atan" "atan2" "bit_size" "btest"
- ;; "ceiling" "char" "cmplx" "conjg" "cos" "cosh" "count" "cshift"
- ;; "date_and_time" "dble" "digits" "dim" "dot_product" "dprod" "eoshift"
- ;; "epsilon" "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
- ;; "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior" "ishft"
- ;; "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt" "lle" "llt" "log"
- ;; "logical" "log10" "matmul" "max" "maxexponent" "maxloc" "maxval" "merge"
- ;; "min" "minexponent" "minloc" "minval" "mod" "modulo" "mvbits" "nearest"
- ;; "nint" "not" "pack" "precision" "present" "product" "radix"
- ;; "random_number" "random_seed" "range" "real" "repeat" "reshape"
- ;; "rrspacing" "scale" "scan" "selected_int_kind" "selected_real_kind"
- ;; "set_exponent" "shape" "sign" "sin" "sinh" "size" "spacing" "spread"
- ;; "sqrt" "sum" "system_clock" "tan" "tanh" "tiny" "transfer" "transpose"
- ;; "trim" "ubound" "unpack" "verify")
- ;; A left parenthesis to avoid highlighting non-procedures.
- ;; Real is taken out here to avoid highlighting declarations.
- (concat
- "\\<\\(a\\(bs\\|c\\(har\\|os\\)\\|djust[lr]\\|i\\(mag\\|nt\\)\\|ll\\(\\|"
- "ocated\\)\\|n\\(int\\|y\\)\\|s\\(in\\|sociated\\)\\|tan2?\\)\\|b\\("
- "it_size\\|test\\)\\|c\\(eiling\\|har\\|mplx\\|o\\(njg\\|sh?\\|unt\\)\\|"
- "shift\\)\\|d\\(ate_and_time\\|ble\\|i\\(gits\\|m\\)\\|ot_product\\|prod"
- "\\)\\|e\\(oshift\\|psilon\\|xp\\(\\|onent\\)\\)\\|f\\(loor\\|"
- "raction\\)\\|huge\\|i\\(a\\(char\\|nd\\)\\|b\\(clr\\|its\\|set\\)\\|"
- "char\\|eor\\|n\\(dex\\|t\\)\\|or\\|shftc?\\)\\|kind\\|l\\(bound\\|"
- "en\\(\\|_trim\\)\\|g[et]\\|l[et]\\|og\\(\\|10\\|ical\\)\\)\\|m\\(a\\("
- "tmul\\|x\\(\\|exponent\\|loc\\|val\\)\\)\\|erge\\|in\\(\\|exponent\\|"
- "loc\\|val\\)\\|od\\(\\|ulo\\)\\|vbits\\)\\|n\\(earest\\|int\\|ot\\)\\|"
- "p\\(ack\\|r\\(e\\(cision\\|sent\\)\\|oduct\\)\\)\\|r\\(a\\(dix\\|n\\("
- "dom_\\(number\\|seed\\)\\|ge\\)\\)\\|e\\(peat\\|shape\\)\\|rspacing\\)\\|"
- "s\\(ca\\(le\\|n\\)\\|e\\(lected_\\(int_kind\\|real_kind\\)\\|"
- "t_exponent\\)\\|hape\\|i\\(gn\\|nh?\\|ze\\)\\|p\\(acing\\|read\\)\\|"
- "qrt\\|um\\|ystem_clock\\)\\|t\\(anh?\\|iny\\|r\\(ans\\(fer\\|pose\\)\\|"
- "im\\)\\)\\|u\\(bound\\|npack\\)\\|verify\\)[ \t]*(")
- "Regexp whose first part matches F90 intrinsic procedures.")
-
-(defconst f90-operators-re
-;; "and" "or" "not" "eqv" "neqv" "eq" "ne" "lt" "le" "gt" "ge" "true" "false"
- (concat
- "\\.\\(and\\|eqv?\\|false\\|g[et]\\|l[et]\\|n\\(e\\(\\|qv\\)\\|"
- "ot\\)\\|or\\|true\\)\\.")
- "Regexp matching intrinsic operators.")
-
-(defconst f90-hpf-keywords-re
- ;; Intrinsic procedures
- ;; ("all_prefix" "all_scatter" "all_suffix" "any_prefix" "any_scatter"
- ;; "any_suffix" "copy_prefix" "copy_scatter" "copy_suffix" "count_prefix"
- ;; "count_scatter" "count_suffix" "grade_down" "grade_up" "hpf_alignment"
- ;; "hpf_template" "hpf_distribution" "iall" "iall_prefix" "iall_scatter"
- ;; "iall_suffix" "iany" "iany_prefix" "iany_scatter" "iany_suffix" "iparity"
- ;; "iparity_prefix" "iparity_scatter" "iparity_suffix" "leadz"
- ;; "maxval_prefix" "maxval_scatter" "maxval_suffix" "minval_prefix"
- ;; "minval_scatter" "minval_suffix" "parity" "parity_prefix"
- ;; "parity_scatter" "parity_suffix" "popcnt" "poppar" "product_prefix"
- ;; "product_scatter" "product_suffix" "sum_prefix" "sum_scatter"
- ;; "sum_suffix" "ilen" "number_of_processors" "processors_shape")
- ;; Directives
- ;; ("align" "distribute" "dynamic" "inherit" "template" "processors"
- ;; "realign" "redistribute" "independent")
- ;; Keywords
- ;; ("pure" "extrinsic" "new" "with" "onto" "block" "cyclic")
- (concat
- "\\<\\(a\\(l\\(ign\\|l_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny_\\("
- "prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|block\\|c\\(o\\(py_\\(prefix\\|"
- "s\\(catter\\|uffix\\)\\)\\|unt_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
- "yclic\\)\\|d\\(istribute\\|ynamic\\)\\|extrinsic\\|grade_\\(down\\|"
- "up\\)\\|hpf_\\(alignment\\|distribution\\|template\\)\\|i\\(a\\(ll\\(\\|"
- "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|ny\\(\\|_\\(prefix\\|s\\("
- "catter\\|uffix\\)\\)\\)\\)\\|len\\|n\\(dependent\\|herit\\)\\|parity\\(\\|"
- "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\)\\|leadz\\|m\\(axval_\\("
- "prefix\\|s\\(catter\\|uffix\\)\\)\\|inval_\\(prefix\\|s\\(catter\\|"
- "uffix\\)\\)\\)\\|n\\(ew\\|umber_of_processors\\)\\|onto\\|p\\(arity\\(\\|"
- "_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|op\\(cnt\\|par\\)\\|ro\\("
- "cessors\\(\\|_shape\\)\\|duct_\\(prefix\\|s\\(catter\\|uffix\\)\\)\\)\\|"
- "ure\\)\\|re\\(align\\|distribute\\)\\|sum_\\(prefix\\|s\\(catter\\|"
- "uffix\\)\\)\\|template\\|with\\)\\>")
- "Regexp for all HPF keywords, procedures and directives.")
-
-;; Highlighting patterns
-
-(defvar f90-font-lock-keywords-1
- (list
- '("\\<\\(end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\\)\\)\\>[ \t]*\\(\\sw+\\)?"
- (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
- '("\\<\\(program\\|call\\|module\\|subroutine\\|function\\|use\\)\\>[ \t]*\\(\\sw+\\)?"
- (1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
- ;; Special highlighting of "module procedure foo-list"
- '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face t))
- ;; Highlight definition of new type
- '("\\<\\(type\\)[ \t]*\\(.*::[ \t]*\\|[ \t]+\\)\\(\\sw+\\)"
- (1 font-lock-keyword-face) (3 font-lock-function-name-face))
- "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>")
- "This does fairly subdued highlighting of comments and function calls.")
-
-(defvar f90-font-lock-keywords-2
- (append f90-font-lock-keywords-1
- (list
- ;; Variable declarations (avoid the real function call)
- '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\([^!\n]*\\)"
- (1 font-lock-type-face) (4 font-lock-variable-name-face))
- ;; do, if, select, where, and forall constructs
- '("\\<\\(end[ \t]*\\(do\\|if\\|select\\|forall\\|where\\)\\)\\>\\([ \t]+\\(\\sw+\\)\\)?"
- (1 font-lock-keyword-face) (3 font-lock-constant-face nil t))
- '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|do\\([ \t]*while\\)?\\|select[ \t]*case\\|where\\|forall\\)\\)\\>"
- (2 font-lock-constant-face nil t) (3 font-lock-keyword-face))
- ;; implicit declaration
- '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" (1 font-lock-keyword-face) (2 font-lock-type-face))
- '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/" (1 font-lock-keyword-face) (2 font-lock-constant-face nil t))
- "\\<else\\([ \t]*if\\|where\\)?\\>"
- "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
- '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
- (1 font-lock-keyword-face) (2 font-lock-constant-face nil t))
- '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1)
- '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
- (1 font-lock-keyword-face) (2 font-lock-constant-face))
- ;; line numbers (lines whose first character after number is letter)
- '("^[ \t]*\\([0-9]+\\)[ \t]*[a-z]+" (1 font-lock-constant-face t))))
- "Highlights declarations, do-loops and other constructions")
-
-(defvar f90-font-lock-keywords-3
- (append f90-font-lock-keywords-2
- (list
- f90-keywords-level-3-re
- f90-operators-re
- (list f90-procedures-re '(1 font-lock-keyword-face t))
- "\\<real\\>" ; Avoid overwriting real defs.
- ))
- "Highlights all F90 keywords and intrinsic procedures.")
-
-(defvar f90-font-lock-keywords-4
- (append f90-font-lock-keywords-3
- (list f90-hpf-keywords-re))
- "Highlights all F90 and HPF keywords.")
-
-(defvar f90-font-lock-keywords
- f90-font-lock-keywords-2
- "*Default expressions to highlight in F90 mode.")
-
-;; syntax table
-(defvar f90-mode-syntax-table nil
- "Syntax table in use in F90 mode buffers.")
-
-(if f90-mode-syntax-table
- ()
- (setq f90-mode-syntax-table (make-syntax-table))
- (modify-syntax-entry ?\! "<" f90-mode-syntax-table) ; beg. comment
- (modify-syntax-entry ?\n ">" f90-mode-syntax-table) ; end comment
- (modify-syntax-entry ?_ "w" f90-mode-syntax-table) ; underscore in names
- (modify-syntax-entry ?\' "\"" f90-mode-syntax-table) ; string quote
- (modify-syntax-entry ?\" "\"" f90-mode-syntax-table) ; string quote
- (modify-syntax-entry ?\` "w" f90-mode-syntax-table) ; for abbrevs
- (modify-syntax-entry ?\r " " f90-mode-syntax-table) ; return is whitespace
- (modify-syntax-entry ?+ "." f90-mode-syntax-table)
- (modify-syntax-entry ?- "." f90-mode-syntax-table)
- (modify-syntax-entry ?= "." f90-mode-syntax-table)
- (modify-syntax-entry ?* "." f90-mode-syntax-table)
- (modify-syntax-entry ?/ "." f90-mode-syntax-table)
- (modify-syntax-entry ?\\ "\\" f90-mode-syntax-table)) ; escape chars
-
-;; keys
-(defvar f90-mode-map ()
- "Keymap used in F90 mode.")
-
-(if f90-mode-map
- ()
- (setq f90-mode-map (make-sparse-keymap))
- (define-key f90-mode-map "`" 'f90-abbrev-start)
- (define-key f90-mode-map "\C-c;" 'f90-comment-region)
- (define-key f90-mode-map "\C-\M-a" 'f90-beginning-of-subprogram)
- (define-key f90-mode-map "\C-\M-e" 'f90-end-of-subprogram)
- (define-key f90-mode-map "\C-\M-h" 'f90-mark-subprogram)
- (define-key f90-mode-map "\C-\M-q" 'f90-indent-subprogram)
- (define-key f90-mode-map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
- (define-key f90-mode-map "\r" 'newline)
- (define-key f90-mode-map "\C-c\r" 'f90-break-line)
- ;; (define-key f90-mode-map [M-return] 'f90-break-line)
- (define-key f90-mode-map "\C-c\C-d" 'f90-join-lines)
- (define-key f90-mode-map "\C-c\C-f" 'f90-fill-region)
- (define-key f90-mode-map "\C-c\C-p" 'f90-previous-statement)
- (define-key f90-mode-map "\C-c\C-n" 'f90-next-statement)
- (define-key f90-mode-map "\C-c\C-w" 'f90-insert-end)
- (define-key f90-mode-map "\t" 'f90-indent-line)
- (define-key f90-mode-map "," 'f90-electric-insert)
- (define-key f90-mode-map "+" 'f90-electric-insert)
- (define-key f90-mode-map "-" 'f90-electric-insert)
- (define-key f90-mode-map "*" 'f90-electric-insert)
- (define-key f90-mode-map "/" 'f90-electric-insert))
-
-
-;; menus
-(if (string-match "XEmacs" emacs-version)
- (defvar f90-xemacs-menu
- '("F90"
- ["Indent Subprogram" f90-indent-subprogram t]
- ["Mark Subprogram" f90-mark-subprogram t]
- ["Beginning of Subprogram" f90-beginning-of-subprogram t]
- ["End of Subprogram" f90-end-of-subprogram t]
- "-----"
- ["(Un)Comment Region" f90-comment-region t]
- ["Indent Region" indent-region t]
- ["Fill Region" f90-fill-region t]
- "-----"
- ["Break Line at Point" f90-break-line t]
- ["Join with Next Line" f90-join-lines t]
- ["Insert Newline" newline t]
- ["Insert Block End" f90-insert-end t]
- "-----"
- ["Upcase Keywords (buffer)" f90-upcase-keywords t]
- ["Upcase Keywords (region)" f90-upcase-region-keywords
- t]
- ["Capitalize Keywords (buffer)" f90-capitalize-keywords t]
- ["Capitalize Keywords (region)"
- f90-capitalize-region-keywords t]
- ["Downcase Keywords (buffer)" f90-downcase-keywords t]
- ["Downcase Keywords (region)"
- f90-downcase-region-keywords t]
- "-----"
- ["Toggle abbrev-mode" abbrev-mode t]
- ["Toggle auto-fill" auto-fill-mode t])
- "XEmacs menu for F90 mode.")
- ;; Emacs
-
- (defvar f90-change-case-menu
- (let ((map (make-sparse-keymap "Change Keyword Case")))
-
- (define-key map [dkr] (cons "Downcase Keywords (region)"
- 'f90-downcase-region-keywords))
- (put 'f90-downcase-region-keywords 'menu-enable 'mark-active)
-
- (define-key map [ckr] (cons "Capitalize Keywords (region)"
- 'f90-capitalize-region-keywords))
- (put 'f90-capitalize-region-keywords 'menu-enable 'mark-active)
-
- (define-key map [ukr] (cons "Upcase Keywords (region)"
- 'f90-upcase-region-keywords))
- (put 'f90-upcase-region-keywords 'menu-enable 'mark-active)
-
- (define-key map [line] (list "-----------------"))
-
- (define-key map [dkb] (cons "Downcase Keywords (buffer)"
- 'f90-downcase-keywords))
-
- (define-key map [ckb] (cons "Capitalize Keywords (buffer)"
- 'f90-capitalize-keywords))
-
- (define-key map [ukb] (cons "Upcase Keywords (buffer)"
- 'f90-upcase-keywords))
- map)
- "Submenu for change of case.")
- (defalias 'f90-change-case-menu f90-change-case-menu)
-
- ;; font-lock-menu and function calls
- (defalias 'f90-font-lock-on 'font-lock-mode)
- (defalias 'f90-font-lock-off 'font-lock-mode)
- (put 'f90-font-lock-on 'menu-enable 'font-lock-mode)
- (put 'f90-font-lock-off 'menu-enable '(not font-lock-mode))
-
- (defun f90-font-lock-1 ()
- (interactive)
- "Set font-lock-keywords to f90-font-lock-keywords-1."
- (font-lock-mode 1)
- (setq font-lock-keywords f90-font-lock-keywords-1)
- (font-lock-fontify-buffer))
-
- (defun f90-font-lock-2 ()
- (interactive)
- "Set font-lock-keywords to f90-font-lock-keywords-2."
- (font-lock-mode 1)
- (setq font-lock-keywords f90-font-lock-keywords-2)
- (font-lock-fontify-buffer))
-
- (defun f90-font-lock-3 ()
- (interactive)
- "Set font-lock-keywords to f90-font-lock-keywords-3."
- (font-lock-mode 1)
- (setq font-lock-keywords f90-font-lock-keywords-3)
- (font-lock-fontify-buffer))
-
- (defun f90-font-lock-4 ()
- (interactive)
- "Set font-lock-keywords to f90-font-lock-keywords-4."
- (font-lock-mode 1)
- (setq font-lock-keywords f90-font-lock-keywords-4)
- (font-lock-fontify-buffer))
-
- (defvar f90-font-lock-menu
- (let ((map (make-sparse-keymap "f90-font-lock-menu")))
- (define-key map [h4] (cons "Maximum highlighting (level 4)"
- 'f90-font-lock-4))
- (define-key map [h3] (cons "Heavy highlighting (level 3)"
- 'f90-font-lock-3))
- (define-key map [h2] (cons "Default highlighting (level 2)"
- 'f90-font-lock-2))
- (define-key map [h1] (cons "Light highlighting (level 1)"
- 'f90-font-lock-1))
- (define-key map [line] (list "-----------------"))
- (define-key map [floff] (cons "Turn off font-lock-mode"
- 'f90-font-lock-on))
- (define-key map [flon] (cons "Turn on font-lock-mode"
- 'f90-font-lock-off))
- map)
- "Submenu for highlighting using font-lock-mode.")
- (defalias 'f90-font-lock-menu f90-font-lock-menu)
-
- (define-key f90-mode-map [menu-bar] (make-sparse-keymap))
- (define-key f90-mode-map [menu-bar f90]
- (cons "F90" (make-sparse-keymap "f90")))
-
- (define-key f90-mode-map [menu-bar f90 f90-imenu-menu]
- '("Add imenu Menu" . f90-add-imenu-menu))
- (define-key f90-mode-map [menu-bar f90 abbrev-mode]
- '("Toggle abbrev-mode" . abbrev-mode))
- (define-key f90-mode-map [menu-bar f90 auto-fill-mode]
- '("Toggle auto-fill" . auto-fill-mode))
- (define-key f90-mode-map [menu-bar f90 line1]
- '("----"))
- (define-key f90-mode-map [menu-bar f90 f90-change-case-menu]
- (cons "Change Keyword Case" 'f90-change-case-menu))
- (define-key f90-mode-map [menu-bar f90 f90-font-lock-menu]
- (cons "Highlighting" 'f90-font-lock-menu))
- (define-key f90-mode-map [menu-bar f90 line2]
- '("----"))
-
- (define-key f90-mode-map [menu-bar f90 f90-insert-end]
- '("Insert Block End" . f90-insert-end))
- (define-key f90-mode-map [menu-bar f90 f90-join-lines]
- '("Join with Next Line" . f90-join-lines))
- (define-key f90-mode-map [menu-bar f90 f90-break-line]
- '("Break Line at Point" . f90-break-line))
-
- (define-key f90-mode-map [menu-bar f90 line3]
- '("----"))
-
- (define-key f90-mode-map [menu-bar f90 f90-fill-region]
- '("Fill Region" . f90-fill-region))
- (put 'f90-fill-region 'menu-enable 'mark-active)
-
- (define-key f90-mode-map [menu-bar f90 indent-region]
- '("Indent Region" . indent-region))
-
- (define-key f90-mode-map [menu-bar f90 f90-comment-region]
- '("(Un)Comment Region" . f90-comment-region))
- (put 'f90-comment-region 'menu-enable 'mark-active)
-
- (define-key f90-mode-map [menu-bar f90 line4]
- '("----"))
-
- (define-key f90-mode-map [menu-bar f90 f90-end-of-subprogram]
- '("End of Subprogram" . f90-end-of-subprogram))
- (define-key f90-mode-map [menu-bar f90 f90-beginning-of-subprogram]
- '("Beginning of Subprogram" . f90-beginning-of-subprogram))
- (define-key f90-mode-map [menu-bar f90 f90-mark-subprogram]
- '("Mark Subprogram" . f90-mark-subprogram))
- (define-key f90-mode-map [menu-bar f90 f90-indent-subprogram]
- '("Indent Subprogram" . f90-indent-subprogram))
- )
-
-;; Regexps for finding program structures.
-(defconst f90-blocks-re
- "\\(block[ \t]*data\\|do\\|if\\|interface\\|function\\|module\\|\
-program\\|select\\|subroutine\\|type\\|where\\|forall\\)\\>")
-(defconst f90-program-block-re
- "\\(program\\|module\\|subroutine\\|function\\)")
-(defconst f90-else-like-re
- "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)")
-(defconst f90-end-if-re
- "end[ \t]*\\(if\\|select\\|where\\|forall\\)\\>")
-(defconst f90-end-type-re
- "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)")
-(defconst f90-type-def-re
- "\\<\\(type\\)\\([^(\n]*\\)\\(::\\)?[ \t]*\\b\\(\\sw+\\)")
-(defconst f90-no-break-re "\\(\\*\\*\\|//\\|=>\\)")
-;; A temporary position to make region operators faster
-(defvar f90-cache-position nil)
-(make-variable-buffer-local 'f90-cache-position)
-;; A flag to tell whether f90-imenu is turned on.
-(defvar f90-imenu nil)
-(make-variable-buffer-local 'f90-imenu)
-
-\f
-;; Imenu support
-(defvar f90-imenu-generic-expression
- (let ((good-char "[^!\"\&\n \t]") (not-e "[^e!\n\"\& \t]")
- (not-n "[^n!\n\"\& \t]") (not-d "[^d!\n\"\& \t]"))
- (list
- '(nil "^[ \t0-9]*program[ \t]+\\(\\sw+\\)" 1)
- '("Modules" "^[ \t0-9]*module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1)
- '("Types" "^[ \t0-9]*type[ \t]+\\(\\sw+\\)" 1)
- (list
- "Procedures"
- (concat
- "^[ \t0-9]*"
- "\\("
- ;; At least three non-space characters before function/subroutine
- ;; Check that the last three non-space characters don't spell E N D
- "[^!\"\&\n]*\\("
- not-e good-char good-char "\\|"
- good-char not-n good-char "\\|"
- good-char good-char not-d "\\)"
- "\\|"
- ;; Less than three non-space characters before function/subroutine
- good-char "?" good-char "?"
- "\\)"
- "[ \t]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)")
- 4)))
- "imenu generic expression for F90 mode.")
-
-(defun f90-add-imenu-menu ()
- (interactive)
- "Add an imenu menu to the menubar."
- (if (not f90-imenu)
- (progn
- (imenu-add-to-menubar "F90-imenu")
- (redraw-frame (selected-frame))
- (setq f90-imenu t))
- (message "%s" "F90-imenu already exists.")))
-(put 'f90-add-imenu-menu 'menu-enable '(not f90-imenu))
-
-
-;; When compiling under GNU Emacs, load imenu during compilation. If
-;; you have 19.22 or earlier, comment this out, or get imenu.
-(and (fboundp 'eval-when-compile)
- (eval-when-compile
- (if (not (string-match "XEmacs" emacs-version))
- (require 'imenu))
- ()))
-\f
-;; abbrevs have generally two letters, except standard types `c, `i, `r, `t
-(defvar f90-mode-abbrev-table nil)
-(if f90-mode-abbrev-table
- ()
- (let ((ac abbrevs-changed))
- (define-abbrev-table 'f90-mode-abbrev-table ())
- (define-abbrev f90-mode-abbrev-table "`al" "allocate" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`ab" "allocatable" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`c" "character" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`cl" "close" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`cm" "common" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`df" "define" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`el" "else" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`ex" "external" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`fo" "format" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`fu" "function" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`in " "include" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`i" "integer" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`it" "intent" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`if" "interface" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`mo" "module" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`op" "optional" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`pr" "print" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`pi" "private" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`pm" "program" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`pu" "public" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`r" "real" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`rt" "return" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`se" "select" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`ta" "target" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`t" "type" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`wh" "where" nil 0 t)
- (define-abbrev f90-mode-abbrev-table "`wr" "write" nil 0 t)
- (setq abbrevs-changed ac)))
-\f
-(defcustom f90-mode-hook nil
- "Hook run by F90 mode."
- :type 'hook
- :options '(f90-add-imenu-menu)
- :group 'f90)
-
-;;;###autoload
-(defun f90-mode ()
- "Major mode for editing Fortran 90 code in free format.
-
-\\[f90-indent-new-line] corrects current indentation and creates new\
- indented line.
-\\[f90-indent-line] indents the current line correctly.
-\\[f90-indent-subprogram] indents the current subprogram.
-
-Type `? or `\\[help-command] to display a list of built-in\
- abbrevs for F90 keywords.
-
-Key definitions:
-\\{f90-mode-map}
-
-Variables controlling indentation style and extra features:
-
- f90-do-indent
- Extra indentation within do blocks. (default 3)
- f90-if-indent
- Extra indentation within if/select case/where/forall blocks. (default 3)
- f90-type-indent
- Extra indentation within type/interface/block-data blocks. (default 3)
- f90-program-indent
- Extra indentation within program/module/subroutine/function blocks.
- (default 2)
- f90-continuation-indent
- Extra indentation applied to continuation lines. (default 5)
- f90-comment-region
- String inserted by \\[f90-comment-region] at start of each line in
- region. (default \"!!!$\")
- f90-indented-comment-re
- Regexp determining the type of comment to be intended like code.
- (default \"!\")
- f90-directive-comment-re
- Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented.
- (default \"!hpf\\\\$\")
- f90-break-delimiters
- Regexp holding list of delimiters at which lines may be broken.
- (default \"[-+*/><=,% \\t]\")
- f90-break-before-delimiters
- Non-nil causes `f90-do-auto-fill' to break lines before delimiters.
- (default t)
- f90-beginning-ampersand
- Automatic insertion of \& at beginning of continuation lines. (default t)
- f90-smart-end
- From an END statement, check and fill the end using matching block start.
- Allowed values are 'blink, 'no-blink, and nil, which determine
- whether to blink the matching beginning.) (default 'blink)
- f90-auto-keyword-case
- Automatic change of case of keywords. (default nil)
- The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
- f90-leave-line-no
- Do not left-justify line numbers. (default nil)
- f90-startup-message
- Set to nil to inhibit message first time F90 mode is used. (default t)
- f90-keywords-re
- List of keywords used for highlighting/upcase-keywords etc.
-
-Turning on F90 mode calls the value of the variable `f90-mode-hook'
-with no args, if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (setq major-mode 'f90-mode)
- (setq mode-name "F90")
- (setq local-abbrev-table f90-mode-abbrev-table)
- (set-syntax-table f90-mode-syntax-table)
- (use-local-map f90-mode-map)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'f90-indent-line)
- (make-local-variable 'indent-region-function)
- (setq indent-region-function 'f90-indent-region)
- (make-local-variable 'require-final-newline)
- (setq require-final-newline t)
- (make-local-variable 'comment-start)
- (setq comment-start "!")
- (make-local-variable 'comment-start-skip)
- (setq comment-start-skip "!+ *")
- (make-local-variable 'comment-indent-function)
- (setq comment-indent-function 'f90-comment-indent)
- (make-local-variable 'abbrev-all-caps)
- (setq abbrev-all-caps t)
- (make-local-variable 'normal-auto-fill-function)
- (setq normal-auto-fill-function 'f90-do-auto-fill)
- (setq indent-tabs-mode nil)
- ;; Setting up things for font-lock
- (if (string-match "XEmacs" emacs-version)
- (progn
- (put 'f90-mode 'font-lock-keywords-case-fold-search t)
- (if (and (featurep 'menubar)
- current-menubar
- (not (assoc "F90" current-menubar)))
- (progn
- (set-buffer-menubar (copy-sequence current-menubar))
- (add-submenu nil f90-xemacs-menu)))))
- ;; XEmacs: (Don't need a special case, since both emacsen work alike -sb)
- (make-local-variable 'font-lock-defaults)
- (setq font-lock-defaults
- '((f90-font-lock-keywords f90-font-lock-keywords-1
- f90-font-lock-keywords-2
- f90-font-lock-keywords-3
- f90-font-lock-keywords-4)
- nil t))
- ;; Tell imenu how to handle f90.
- (set (make-local-variable 'imenu-case-fold-search) t)
- (make-local-variable 'imenu-generic-expression)
- (setq imenu-generic-expression f90-imenu-generic-expression)
- (set (make-local-variable 'add-log-current-defun-function)
- #'f90-current-defun)
- (run-hooks 'f90-mode-hook)
- (setq f90-startup-message nil))
-\f
-;; inline-functions
-(defsubst f90-get-beg-of-line ()
- (save-excursion (beginning-of-line) (point)))
-
-(defsubst f90-get-end-of-line ()
- (save-excursion (end-of-line) (point)))
-
-(defsubst f90-in-string ()
- (let ((beg-pnt
- (if (and f90-cache-position (> (point) f90-cache-position))
- f90-cache-position
- (point-min))))
- (nth 3 (parse-partial-sexp beg-pnt (point)))))
-
-(defsubst f90-in-comment ()
- (let ((beg-pnt
- (if (and f90-cache-position (> (point) f90-cache-position))
- f90-cache-position
- (point-min))))
- (nth 4 (parse-partial-sexp beg-pnt (point)))))
-
-(defsubst f90-line-continued ()
- (save-excursion
- (let ((bol (f90-get-beg-of-line)))
- (end-of-line)
- (while (f90-in-comment)
- (search-backward "!" bol)
- (skip-chars-backward "!"))
- (skip-chars-backward " \t")
- (= (preceding-char) ?&))))
-
-(defsubst f90-current-indentation ()
- "Return indentation of current line.
-Line-numbers are considered whitespace characters."
- (save-excursion
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (current-column)))
-
-(defsubst f90-indent-to (col &optional no-line-number)
- "Indent current line to column COL.
-If no-line-number nil, jump over a possible line-number."
- (beginning-of-line)
- (if (not no-line-number)
- (skip-chars-forward " \t0-9"))
- (delete-horizontal-space)
- (if (zerop (current-column))
- (indent-to col)
- (indent-to col 1)))
-
-(defsubst f90-match-piece (arg)
- (if (match-beginning arg)
- (buffer-substring (match-beginning arg) (match-end arg))))
-
-(defsubst f90-get-present-comment-type ()
- (save-excursion
- (let ((type nil) (eol (f90-get-end-of-line)))
- (if (f90-in-comment)
- (progn
- (beginning-of-line)
- (re-search-forward "[!]+" eol)
- (while (f90-in-string)
- (re-search-forward "[!]+" eol))
- (setq type (buffer-substring (match-beginning 0) (match-end 0)))))
- type)))
-
-(defsubst f90-equal-symbols (a b)
- "Compare strings neglecting case and allowing for nil value."
- (let ((a-local (if a (downcase a) nil))
- (b-local (if b (downcase b) nil)))
- (equal a-local b-local)))
-
-;; XEmacs 19.11 & 19.12 gives back a single char when matching an empty regular
-;; expression. Therefore, the next 2 functions are longer than necessary.
-
-(defsubst f90-looking-at-do ()
- "Return (\"do\" name) if a do statement starts after point.
-Name is nil if the statement has no label."
- (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(do\\)\\>")
- (let (label
- (struct (f90-match-piece 3)))
- (if (looking-at "\\(\\sw+\\)[ \t]*\:")
- (setq label (f90-match-piece 1)))
- (list struct label))))
-
-(defsubst f90-looking-at-select-case ()
- "Return (\"select\" name) if a select-case statement starts after point.
-Name is nil if the statement has no label."
- (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(select\\)[ \t]*case[ \t]*(")
- (let (label
- (struct (f90-match-piece 3)))
- (if (looking-at "\\(\\sw+\\)[ \t]*\:")
- (setq label (f90-match-piece 1)))
- (list struct label))))
-
-(defsubst f90-looking-at-if-then ()
- "Return (\"if\" name) if an if () then statement starts after point.
-Name is nil if the statement has no label."
- (save-excursion
- (let (struct (label nil))
- (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(if\\)\\>")
- (progn
- (setq struct (f90-match-piece 3))
- (if (looking-at "\\(\\sw+\\)[ \t]*\:")
- (setq label (f90-match-piece 1)))
- (let ((pos (scan-lists (point) 1 0)))
- (and pos (goto-char pos)))
- (skip-chars-forward " \t")
- (if (or (looking-at "then\\>")
- (if (f90-line-continued)
- (progn
- (f90-next-statement)
- (skip-chars-forward " \t0-9&")
- (looking-at "then\\>"))))
- (list struct label)))))))
-
-(defsubst f90-looking-at-where-or-forall ()
- "Return (kind name) if a where or forall block starts after point.
-Name is nil if the statement has no label."
- (if (looking-at "\\(\\(\\sw+\\)[ \t]*\:\\)?[ \t]*\\(where\\|forall\\)[ \t]*(.*)[ \t]*\\(!\\|$\\)")
- (let (label
- (struct (f90-match-piece 3)))
- (if (looking-at "\\(\\sw+\\)[ \t]*\:")
- (setq label (f90-match-piece 1)))
- (list struct label))))
-
-(defsubst f90-looking-at-type-like ()
- "Return (kind name) at the start of a type/interface/block-data block.
-Name is non-nil only for type."
- (cond
- ((looking-at f90-type-def-re)
- (list (f90-match-piece 1) (f90-match-piece 4)))
- ((looking-at "\\(interface\\|block[\t]*data\\)\\>")
- (list (f90-match-piece 1) nil))))
-
-(defsubst f90-looking-at-program-block-start ()
- "Return (kind name) if a program block with name name starts after point."
- (cond
- ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
- (list (f90-match-piece 1) (f90-match-piece 2)))
- ((and (not (looking-at "module[ \t]*procedure\\>"))
- (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
- (list (f90-match-piece 1) (f90-match-piece 2)))
- ((and (not (looking-at "end[ \t]*\\(function\\|subroutine\\)"))
- (looking-at "[^!\"\&\n]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)"))
- (list (f90-match-piece 1) (f90-match-piece 2)))))
-
-(defsubst f90-looking-at-program-block-end ()
- "Return list of type and name of end of block."
- (if (looking-at (concat "end[ \t]*" f90-blocks-re
- "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
- (list (f90-match-piece 1) (f90-match-piece 3))))
-
-(defsubst f90-comment-indent ()
- (cond ((looking-at "!!!") 0)
- ((and f90-directive-comment-re
- (looking-at f90-directive-comment-re)) 0)
- ((looking-at (regexp-quote f90-comment-region)) 0)
- ((and (looking-at f90-indented-comment-re)
- ;; Don't attempt to indent trailing comment as code.
- (save-excursion
- (skip-chars-backward " \t")
- (bolp)))
- (f90-calculate-indent))
- (t (skip-chars-backward " \t")
- (max (if (bolp) 0 (1+ (current-column))) comment-column))))
-
-(defsubst f90-present-statement-cont ()
- "Return continuation properties of present statement."
- (let (pcont cont)
- (save-excursion
- (setq pcont (if (f90-previous-statement) (f90-line-continued) nil)))
- (setq cont (f90-line-continued))
- (cond ((and (not pcont) (not cont)) 'single)
- ((and (not pcont) cont) 'begin)
- ((and pcont (not cont)) 'end)
- ((and pcont cont) 'middle)
- (t (error)))))
-
-(defsubst f90-indent-line-no ()
- (if f90-leave-line-no
- ()
- (if (and (not (zerop (skip-chars-forward " \t")))
- (looking-at "[0-9]"))
- (delete-horizontal-space)))
- (skip-chars-forward " \t0-9"))
-
-(defsubst f90-no-block-limit ()
- (let ((eol (f90-get-end-of-line)))
- (save-excursion
- (not (or (looking-at "end")
- (looking-at "\\(do\\|if\\|else\\(if\\|where\\)?\
-\\|select[ \t]*case\\|case\\|where\\|forall\\)\\>")
- (looking-at "\\(program\\|module\\|interface\\|\
-block[ \t]*data\\)\\>")
- (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
- (looking-at f90-type-def-re)
- (re-search-forward "\\(function\\|subroutine\\)" eol t))))))
-
-(defsubst f90-update-line ()
- (let (bol eol)
- (if f90-auto-keyword-case
- (progn (setq bol (f90-get-beg-of-line)
- eol (f90-get-end-of-line))
- (if f90-auto-keyword-case
- (f90-change-keywords f90-auto-keyword-case bol eol))))))
-\f
-(defun f90-electric-insert ()
- (interactive)
- "Calls f90-do-auto-fill at each operator insertion."
- (self-insert-command 1)
- (f90-update-line)
- (if auto-fill-function (f90-do-auto-fill)))
-
-(defun f90-get-correct-indent ()
- "Get correct indent for a line starting with line number.
-Does not check type and subprogram indentation."
- (let ((epnt (f90-get-end-of-line)) icol cont)
- (save-excursion
- (while (and (f90-previous-statement)
- (or (progn
- (setq cont (f90-present-statement-cont))
- (or (eq cont 'end) (eq cont 'middle)))
- (looking-at "[ \t]*[0-9]"))))
- (setq icol (current-indentation))
- (beginning-of-line)
- (if (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
- (f90-get-end-of-line) t)
- (progn
- (beginning-of-line) (skip-chars-forward " \t")
- (cond ((f90-looking-at-do)
- (setq icol (+ icol f90-do-indent)))
- ((or (f90-looking-at-if-then)
- (f90-looking-at-where-or-forall)
- (f90-looking-at-select-case))
- (setq icol (+ icol f90-if-indent))))
- (end-of-line)))
- (while (re-search-forward
- "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t)
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (cond ((f90-looking-at-do)
- (setq icol (+ icol f90-do-indent)))
- ((or (f90-looking-at-if-then)
- (f90-looking-at-where-or-forall)
- (f90-looking-at-select-case))
- (setq icol (+ icol f90-if-indent)))
- ((looking-at f90-end-if-re)
- (setq icol (- icol f90-if-indent)))
- ((looking-at "end[ \t]*do\\>")
- (setq icol (- icol f90-do-indent))))
- (end-of-line))
- icol)))
-
-
-(defun f90-calculate-indent ()
- "Calculate the indent column based on previous statements."
- (interactive)
- (let (icol cont (case-fold-search t) (pnt (point)))
- (save-excursion
- (if (not (f90-previous-statement))
- (setq icol 0)
- (setq cont (f90-present-statement-cont))
- (if (eq cont 'end)
- (while (not (eq 'begin (f90-present-statement-cont)))
- (f90-previous-statement)))
- (cond ((eq cont 'begin)
- (setq icol (+ (f90-current-indentation)
- f90-continuation-indent)))
- ((eq cont 'middle) (setq icol(current-indentation)))
- (t (setq icol (f90-current-indentation))
- (skip-chars-forward " \t")
- (if (looking-at "[0-9]")
- (setq icol (f90-get-correct-indent))
- (cond ((or (f90-looking-at-if-then)
- (f90-looking-at-where-or-forall)
- (f90-looking-at-select-case)
- (looking-at f90-else-like-re))
- (setq icol (+ icol f90-if-indent)))
- ((f90-looking-at-do)
- (setq icol (+ icol f90-do-indent)))
- ((f90-looking-at-type-like)
- (setq icol (+ icol f90-type-indent)))
- ((or (f90-looking-at-program-block-start)
- (looking-at "contains[ \t]*\\($\\|!\\)"))
- (setq icol (+ icol f90-program-indent)))))
- (goto-char pnt)
- (beginning-of-line)
- (cond ((looking-at "[ \t]*$"))
- ((looking-at "[ \t]*#") ; Check for cpp directive.
- (setq icol 0))
- (t
- (skip-chars-forward " \t0-9")
- (cond ((or (looking-at f90-else-like-re)
- (looking-at f90-end-if-re))
- (setq icol (- icol f90-if-indent)))
- ((looking-at "end[ \t]*do\\>")
- (setq icol (- icol f90-do-indent)))
- ((looking-at f90-end-type-re)
- (setq icol (- icol f90-type-indent)))
- ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
- (f90-looking-at-program-block-end))
- (setq icol (- icol f90-program-indent))))))
- ))))
- icol))
-\f
-;; Statement = statement line, a line which is neither blank, nor a comment.
-(defun f90-previous-statement ()
- "Move point to beginning of the previous F90 statement.
-Return nil if no previous statement is found."
- (interactive)
- (let (not-first-statement)
- (beginning-of-line)
- (while (and (setq not-first-statement (zerop (forward-line -1)))
- (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
- not-first-statement))
-
-(defun f90-next-statement ()
- "Move point to beginning of the next F90 statement.
-Return nil if no later statement is found."
- (interactive)
- (let (not-last-statement)
- (beginning-of-line)
- (while (and (setq not-last-statement
- (and (zerop (forward-line 1))
- (not (eobp))))
- (looking-at "[ \t0-9]*\\(!\\|$\\)")))
- not-last-statement))
-
-(defun f90-beginning-of-subprogram ()
- "Move point to the beginning of subprogram.
-Return (type name) or nil if not found."
- (interactive)
- (let ((count 1) (case-fold-search t) matching-beg)
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (if (setq matching-beg (f90-looking-at-program-block-start))
- (setq count (- count 1)))
- (while (and (not (zerop count))
- (re-search-backward f90-program-block-re nil 'move))
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (cond
- ((setq matching-beg (f90-looking-at-program-block-start))
- (setq count (- count 1)))
- ((f90-looking-at-program-block-end)
- (setq count (+ count 1)))))
- (beginning-of-line)
- (if (zerop count)
- matching-beg
- (message "No beginning-found.")
- nil)))
-
-(defun f90-end-of-subprogram ()
- "Move point to the end of subprogram.
-Return (type name) or nil if not found."
- (interactive)
- (let ((count 1) (case-fold-search t) matching-end)
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (if (setq matching-end (f90-looking-at-program-block-end))
- (setq count (1- count)))
- (end-of-line)
- (while (and (not (zerop count))
- (re-search-forward f90-program-block-re nil 'move))
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (cond ((f90-looking-at-program-block-start)
- (setq count (+ count 1)))
- ((setq matching-end (f90-looking-at-program-block-end))
- (setq count (1- count ))))
- (end-of-line))
- (forward-line 1)
- (if (zerop count)
- matching-end
- (message "No end found.")
- nil)))
-
-(defun f90-mark-subprogram ()
- "Put mark at end of F90 subprogram, point at beginning.
-Marks are pushed and highlight (grey shadow) is turned on."
- (interactive)
- (let ((pos (point)) program)
- (f90-end-of-subprogram)
- (push-mark (point) t)
- (goto-char pos)
- (setq program (f90-beginning-of-subprogram))
- ;; The keywords in the preceding lists assume case-insensitivity.
- (if (string-match "XEmacs" emacs-version)
- (zmacs-activate-region)
- (setq mark-active t)
- (setq deactivate-mark nil))
- program))
-
-(defun f90-comment-region (beg-region end-region)
- "Comment/uncomment every line in the region.
-Insert f90-comment-region at the beginning of every line in the region
-or, if already present, remove it."
- (interactive "*r")
- (let ((end (make-marker)))
- (set-marker end end-region)
- (goto-char beg-region)
- (beginning-of-line)
- (if (looking-at (regexp-quote f90-comment-region))
- (delete-region (point) (match-end 0))
- (insert f90-comment-region))
- (while (and (zerop (forward-line 1))
- (< (point) (marker-position end)))
- (if (looking-at (regexp-quote f90-comment-region))
- (delete-region (point) (match-end 0))
- (insert f90-comment-region)))
- (set-marker end nil)))
-
-(defun f90-indent-line (&optional no-update)
- "Indent current line as F90 code."
- (interactive)
- (let (indent (no-line-number nil) (pos (make-marker)) (case-fold-search t))
- (set-marker pos (point))
- (beginning-of-line) ; Digits after & \n are not line-no
- (if (save-excursion (and (f90-previous-statement) (f90-line-continued)))
- (progn (setq no-line-number t) (skip-chars-forward " \t"))
- (f90-indent-line-no))
- (if (looking-at "!")
- (setq indent (f90-comment-indent))
- (if (and (looking-at "end") f90-smart-end)
- (f90-match-end))
- (setq indent (f90-calculate-indent)))
- (if (zerop (- indent (current-column)))
- nil
- (f90-indent-to indent no-line-number))
- ;; If initial point was within line's indentation,
- ;; position after the indentation. Else stay at same point in text.
- (if (< (point) (marker-position pos))
- (goto-char (marker-position pos)))
- (if (not no-update) (f90-update-line))
- (if auto-fill-function (f90-do-auto-fill))
- (set-marker pos nil)))
-
-(defun f90-indent-new-line ()
- "Reindent the current F90 line, insert a newline and indent the newline.
-An abbrev before point is expanded if `abbrev-mode' is non-nil.
-If run in the middle of a line, the line is not broken."
- (interactive)
- (let (string cont (case-fold-search t))
- (if abbrev-mode (expand-abbrev))
- (beginning-of-line) ; Reindent where likely to be needed.
- (f90-indent-line-no)
- (if (or (looking-at "\\(end\\|else\\|!\\)"))
- (f90-indent-line 'no-update))
- (end-of-line)
- (delete-horizontal-space) ;Destroy trailing whitespace
- (setq string (f90-in-string))
- (setq cont (f90-line-continued))
- (if (and string (not cont)) (insert "&"))
- (f90-update-line)
- (newline)
- (if (or string (and cont f90-beginning-ampersand)) (insert "&"))
- (f90-indent-line 'no-update)))
-
-
-(defun f90-indent-region (beg-region end-region)
- "Indent every line in region by forward parsing."
- (interactive "*r")
- (let ((end-region-mark (make-marker)) (save-point (point-marker))
- (block-list nil) ind-lev ind-curr ind-b cont
- struct beg-struct end-struct)
- (set-marker end-region-mark end-region)
- (goto-char beg-region)
- ;; first find a line which is not a continuation line or comment
- (beginning-of-line)
- (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
- (progn (f90-indent-line 'no-update)
- (zerop (forward-line 1)))
- (< (point) end-region-mark)))
- (setq cont (f90-present-statement-cont))
- (while (and (or (eq cont 'middle) (eq cont 'end))
- (f90-previous-statement))
- (setq cont (f90-present-statement-cont)))
- ;; process present line for beginning of block
- (setq f90-cache-position (point))
- (f90-indent-line 'no-update)
- (setq ind-lev (f90-current-indentation))
- (setq ind-curr ind-lev)
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (setq struct nil)
- (setq ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
- ((or (setq struct (f90-looking-at-if-then))
- (setq struct (f90-looking-at-select-case))
- (setq struct (f90-looking-at-where-or-forall))
- (looking-at f90-else-like-re))
- f90-if-indent)
- ((setq struct (f90-looking-at-type-like))
- f90-type-indent)
- ((or(setq struct (f90-looking-at-program-block-start))
- (looking-at "contains[ \t]*\\($\\|!\\)"))
- f90-program-indent)))
- (if ind-b (setq ind-lev (+ ind-lev ind-b)))
- (if struct (setq block-list (cons struct block-list)))
- (while (and (f90-line-continued) (zerop (forward-line 1))
- (< (point) end-region-mark))
- (if (not (zerop (- (current-indentation)
- (+ ind-curr f90-continuation-indent))))
- (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no)))
- ;; process all following lines
- (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
- (beginning-of-line)
- (f90-indent-line-no)
- (setq f90-cache-position (point))
- (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
- ((looking-at "[ \t]*#") (setq ind-curr 0))
- ((looking-at "!") (setq ind-curr (f90-comment-indent)))
- ((f90-no-block-limit) (setq ind-curr ind-lev))
- ((looking-at f90-else-like-re) (setq ind-curr
- (- ind-lev f90-if-indent)))
- ((looking-at "contains[ \t]*\\($\\|!\\)")
- (setq ind-curr (- ind-lev f90-program-indent)))
- ((setq ind-b
- (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
- ((or (setq struct (f90-looking-at-if-then))
- (setq struct (f90-looking-at-select-case))
- (setq struct (f90-looking-at-where-or-forall)))
- f90-if-indent)
- ((setq struct (f90-looking-at-type-like))
- f90-type-indent)
- ((setq struct (f90-looking-at-program-block-start))
- f90-program-indent)))
- (setq ind-curr ind-lev)
- (if ind-b (setq ind-lev (+ ind-lev ind-b)))
- (setq block-list (cons struct block-list)))
- ((setq end-struct (f90-looking-at-program-block-end))
- (setq beg-struct (car block-list)
- block-list (cdr block-list))
- (if f90-smart-end
- (save-excursion
- (f90-block-match (car beg-struct)(car (cdr beg-struct))
- (car end-struct)(car (cdr end-struct)))))
- (setq ind-b
- (cond ((looking-at f90-end-if-re) f90-if-indent)
- ((looking-at "end[ \t]*do\\>") f90-do-indent)
- ((looking-at f90-end-type-re) f90-type-indent)
- ((f90-looking-at-program-block-end)
- f90-program-indent)))
- (if ind-b (setq ind-lev (- ind-lev ind-b)))
- (setq ind-curr ind-lev))
- (t (setq ind-curr ind-lev)))
- ;; do the indentation if necessary
- (if (not (zerop (- ind-curr (current-column))))
- (f90-indent-to ind-curr))
- (while (and (f90-line-continued) (zerop (forward-line 1))
- (< (point) end-region-mark))
- (if (not (zerop (- (current-indentation)
- (+ ind-curr f90-continuation-indent))))
- (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
- ;; restore point etc
- (setq f90-cache-position nil)
- (goto-char save-point)
- (set-marker end-region-mark nil)
- (set-marker save-point nil)
- (if (string-match "XEmacs" emacs-version)
- (zmacs-deactivate-region)
- (deactivate-mark))))
-
-(defun f90-indent-subprogram ()
- "Properly indent the subprogram which contains point."
- (interactive)
- (save-excursion
- (let (program)
- (setq program (f90-mark-subprogram))
- (if program
- (progn
- (message "Indenting %s %s..."
- (car program) (car (cdr program)))
- (f90-indent-region (point) (mark))
- (message "Indenting %s %s...done"
- (car program) (car (cdr program))))
- (message "Indenting the whole file...")
- (f90-indent-region (point) (mark))
- (message "Indenting the whole file...done")))))
-
-;; autofill and break-line
-(defun f90-break-line (&optional no-update)
- "Break line at point, insert continuation marker(s) and indent."
- (interactive)
- (let (ctype)
- (cond ((f90-in-string)
- (insert "&") (newline 1) (insert "&"))
- ((f90-in-comment)
- (setq ctype (f90-get-present-comment-type))
- (newline 1)
- (insert ctype))
- (t (insert "&")
- (if (not no-update) (f90-update-line))
- (newline 1)
- (if f90-beginning-ampersand (insert "&")))))
- (f90-indent-line))
-
-(defun f90-find-breakpoint ()
- "From fill-column, search backward for break-delimiter."
- (let ((bol (f90-get-beg-of-line)))
- (re-search-backward f90-break-delimiters bol)
- (if f90-break-before-delimiters
- (progn (backward-char)
- (if (not (looking-at f90-no-break-re))
- (forward-char)))
- (if (looking-at f90-no-break-re)
- (forward-char 2)
- (forward-char)))))
-
-(defun f90-do-auto-fill ()
- "Break line if non-white characters beyond fill-column. Also, update line. "
- (interactive)
- ;; Break the line before or after the last delimiter (non-word char) if
- ;; position is beyond fill-column.
- ;; Will not break **, //, or => (specified by f90-no-break-re).
- (f90-update-line)
- (while (> (current-column) fill-column)
- (let ((pos-mark (point-marker)))
- (move-to-column fill-column)
- (if (not (f90-in-string))
- (f90-find-breakpoint))
- (f90-break-line)
- (goto-char pos-mark)
- (set-marker pos-mark nil))))
-
-
-(defun f90-join-lines ()
- "Join present line with next line, if this line ends with \&."
- (interactive)
- (let (pos (oldpos (point)))
- (end-of-line)
- (skip-chars-backward " \t")
- (cond ((= (preceding-char) ?&)
- (delete-char -1)
- (setq pos (point))
- (forward-line 1)
- (skip-chars-forward " \t")
- (if (looking-at "\&") (delete-char 1))
- (delete-region pos (point))
- (if (not (f90-in-string))
- (progn (delete-horizontal-space) (insert " ")))
- (if (and auto-fill-function
- (> (save-excursion (end-of-line)
- (current-column))
- fill-column))
- (f90-do-auto-fill))
- (goto-char oldpos)
- t))))
-
-(defun f90-fill-region (beg-region end-region)
- "Fill every line in region by forward parsing. Join lines if possible."
- (interactive "*r")
- (let ((end-region-mark (make-marker))
- (f90-smart-end nil) (f90-auto-keyword-case nil) (go-on t)
- (auto-fill-function nil))
- (set-marker end-region-mark end-region)
- (goto-char beg-region)
- (while go-on
- ;; join as much as possible
- (while (f90-join-lines))
- ;; chop the line if necessary
- (while (> (save-excursion (end-of-line) (current-column))
- fill-column)
- (move-to-column fill-column)
- (f90-find-breakpoint)
- (f90-break-line 'no-update))
- (setq go-on (and (< (point) (marker-position end-region-mark))
- (zerop (forward-line 1))))
- (setq f90-cache-position (point)))
- (setq f90-cache-position nil)
- (if (string-match "XEmacs" emacs-version)
- (zmacs-deactivate-region)
- (deactivate-mark))))
-\f
-(defun f90-block-match (beg-block beg-name end-block end-name)
- "Match end-struct with beg-struct and complete end-block if possible.
-Leave point at the end of line."
- (search-forward "end" (f90-get-end-of-line))
- (catch 'no-match
- (if (not (f90-equal-symbols beg-block end-block))
- (if end-block
- (progn
- (message "END %s does not match %s." end-block beg-block)
- (end-of-line)
- (throw 'no-match nil))
- (message "Inserting %s." beg-block)
- (insert (concat " " beg-block)))
- (search-forward end-block))
- (if (not (f90-equal-symbols beg-name end-name))
- (cond ((and beg-name (not end-name))
- (message "Inserting %s." beg-name)
- (insert (concat " " beg-name)))
- ((and beg-name end-name)
- (message "Replacing %s with %s." end-name beg-name)
- (search-forward end-name)
- (replace-match beg-name))
- ((and (not beg-name) end-name)
- (message "Deleting %s." end-name)
- (search-forward end-name)
- (replace-match "")))
- (if end-name (search-forward end-name)))
- (if (not (looking-at "[ \t]*!")) (delete-horizontal-space))))
-
-(defun f90-match-end ()
- "From an end foo statement, find the corresponding foo including name."
- (interactive)
- (let ((count 1) (top-of-window (window-start)) (matching-beg nil)
- (end-point (point)) (case-fold-search t)
- beg-name end-name beg-block end-block end-struct)
- (if (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
- (setq end-struct (f90-looking-at-program-block-end)))
- (progn
- (setq end-block (car end-struct))
- (setq end-name (car (cdr end-struct)))
- (save-excursion
- (beginning-of-line)
- (while
- (and (not (zerop count))
- (let ((stop nil) notexist)
- (while (not stop)
- (setq notexist
- (not (re-search-backward
- (concat "\\(" f90-blocks-re "\\)") nil t)))
- (if notexist
- (setq stop t)
- (setq stop
- (not (or (f90-in-string)
- (f90-in-comment))))))
- (not notexist)))
- (beginning-of-line) (skip-chars-forward " \t0-9")
- (cond ((setq matching-beg
- (cond
- ((f90-looking-at-do))
- ((f90-looking-at-if-then))
- ((f90-looking-at-where-or-forall))
- ((f90-looking-at-select-case))
- ((f90-looking-at-type-like))
- ((f90-looking-at-program-block-start))))
- (setq count (- count 1)))
- ((looking-at (concat "end[ \t]*" f90-blocks-re "\\b"))
- (setq count (+ count 1)))))
- (if (not (zerop count))
- (message "No matching beginning.")
- (f90-update-line)
- (if (eq f90-smart-end 'blink)
- (if (< (point) top-of-window)
- (message "Matches %s: %s"
- (what-line)
- (buffer-substring
- (progn (beginning-of-line) (point))
- (progn (end-of-line) (point))))
- (sit-for 1)))
- (setq beg-block (car matching-beg))
- (setq beg-name (car (cdr matching-beg)))
- (goto-char end-point)
- (beginning-of-line)
- (f90-block-match beg-block beg-name end-block end-name)))))))
-
-(defun f90-insert-end ()
- "Inserts an complete end statement matching beginning of present block."
- (interactive)
- (let ((f90-smart-end (if f90-smart-end f90-smart-end 'blink)))
- (insert "end")
- (f90-indent-new-line)))
-\f
-;; abbrevs and keywords
-
-(defun f90-abbrev-start ()
- "Typing `\\[help-command] or `? lists all the F90 abbrevs.
-Any other key combination is executed normally."
- (interactive)
- (let (e c)
- (insert last-command-char)
- (if (string-match "XEmacs" emacs-version)
- (progn
- (setq e (next-command-event))
- (setq c (event-to-character e)))
- (setq c (read-event)))
- ;; insert char if not equal to `?'
- (if (or (eq c ??) (eq c help-char))
- (f90-abbrev-help)
- (if (string-match "XEmacs" emacs-version)
- (setq unread-command-event e)
- (setq unread-command-events (list c))))))
-
-(defun f90-abbrev-help ()
- "List the currently defined abbrevs in F90 mode."
- (interactive)
- (message "Listing abbrev table...")
- (display-buffer (f90-prepare-abbrev-list-buffer))
- (message "Listing abbrev table...done"))
-
-(defun f90-prepare-abbrev-list-buffer ()
- (save-excursion
- (set-buffer (get-buffer-create "*Abbrevs*"))
- (erase-buffer)
- (insert-abbrev-table-description 'f90-mode-abbrev-table t)
- (goto-char (point-min))
- (set-buffer-modified-p nil)
- (edit-abbrevs-mode))
- (get-buffer-create "*Abbrevs*"))
-
-(defun f90-upcase-keywords ()
- "Upcase all F90 keywords in the buffer."
- (interactive)
- (f90-change-keywords 'upcase-word))
-
-(defun f90-capitalize-keywords ()
- "Capitalize all F90 keywords in the buffer."
- (interactive)
- (f90-change-keywords 'capitalize-word))
-
-(defun f90-downcase-keywords ()
- "Downcase all F90 keywords in the buffer."
- (interactive)
- (f90-change-keywords 'downcase-word))
-
-(defun f90-upcase-region-keywords (beg end)
- "Upcase all F90 keywords in the region."
- (interactive "*r")
- (f90-change-keywords 'upcase-word beg end))
-
-(defun f90-capitalize-region-keywords (beg end)
- "Capitalize all F90 keywords in the region."
- (interactive "*r")
- (f90-change-keywords 'capitalize-word beg end))
-
-(defun f90-downcase-region-keywords (beg end)
- "Downcase all F90 keywords in the region."
- (interactive "*r")
- (f90-change-keywords 'downcase-word beg end))
-
-;; Change the keywords according to argument.
-(defun f90-change-keywords (change-word &optional beg end)
- (save-excursion
- (setq beg (if beg beg (point-min)))
- (setq end (if end end (point-max)))
- (let ((keyword-re
- (concat "\\("
- f90-keywords-re "\\|" f90-procedures-re "\\|"
- f90-hpf-keywords-re "\\|" f90-operators-re "\\)"))
- (ref-point (point-min)) state
- (modified (buffer-modified-p)) saveword back-point)
- (goto-char beg)
- (unwind-protect
- (while (re-search-forward keyword-re end t)
- (if (progn
- (setq state (parse-partial-sexp ref-point (point)))
- (or (nth 3 state) (nth 4 state)
- (save-excursion ; Check for cpp directive.
- (beginning-of-line)
- (skip-chars-forward " \t0-9")
- (looking-at "#"))))
- ()
- (setq ref-point (point)
- back-point (save-excursion (backward-word 1) (point)))
- (setq saveword (buffer-substring back-point ref-point))
- (funcall change-word -1)
- (or (string= saveword (buffer-substring back-point ref-point))
- (setq modified t))))
- (or modified (set-buffer-modified-p nil))))))
-
-
-(defun f90-current-defun ()
- "Function to use for `add-log-current-defun-function' in F90 mode."
- (save-excursion
- (nth 1 (f90-beginning-of-subprogram))))
-
-(provide 'f90)
-
-;;; f90.el ends here
+;;; f90.el --- Fortran-90 mode (free format)
+
+;; Copyright (C) 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005
+;; Free Software Foundation, Inc.
+
+;; Author: Torbj\"orn Einarsson <Torbjorn.Einarsson@era.ericsson.se>
+;; Maintainer: Glenn Morris <gmorris@ast.cam.ac.uk>
+;; Keywords: fortran, f90, languages
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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, or (at your option)
+;; any later version.
+
+;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; Major mode for editing F90 programs in FREE FORMAT.
+;; The minor language revision F95 is also supported (with font-locking).
+
+;; Knows about continuation lines, named structured statements, and other
+;; features in F90 including HPF (High Performance Fortran) structures.
+;; The basic feature provides accurate indentation of F90 programs.
+;; In addition, there are many more features like automatic matching of all
+;; end statements, an auto-fill function to break long lines, a join-lines
+;; function which joins continued lines, etc.
+
+;; To facilitate typing, a fairly complete list of abbreviations is provided.
+;; All abbreviations begin with the backquote character "`"
+;; (this requires modification of the syntax-table).
+;; For example, `i expands to integer (if abbrev-mode is on).
+
+;; There are two separate features for altering the appearance of code:
+;; 1) Upcasing or capitalizing of all keywords.
+;; 2) Colors/fonts using font-lock-mode.
+;; Automatic upcase or downcase of keywords is controlled by the variable
+;; f90-auto-keyword-case.
+
+;; The indentations of lines starting with ! is determined by the first of the
+;; following matches (values in the left column are the defaults):
+
+;; start-string/regexp indent variable holding start-string/regexp
+;; !!! 0
+;; !hpf\\$ (re) 0 f90-directive-comment-re
+;; !!$ 0 f90-comment-region
+;; ! (re) as code f90-indented-comment-re
+;; default comment-column
+
+;; Ex: Here is the result of 3 different settings of f90-indented-comment-re
+;; f90-indented-comment-re !-indentation !!-indentation
+;; ! as code as code
+;; !! comment-column as code
+;; ![^!] as code comment-column
+;; Trailing comments are indented to comment-column with indent-for-comment.
+;; The function f90-comment-region toggles insertion of
+;; the variable f90-comment-region in every line of the region.
+
+;; One common convention for free vs. fixed format is that free format files
+;; have the ending .f90 or .f95 while fixed format files have the ending .f.
+;; Emacs automatically loads Fortran files in the appropriate mode based
+;; on extension. You can modify this by adjusting the variable auto-mode-alist.
+;; For example:
+;; (add-to-list 'auto-mode-alist '("\\.f\\'" . f90-mode))
+
+;; Once you have entered f90-mode, you may get more info by using
+;; the command describe-mode (C-h m). For online help use
+;; C-h f <Name of function you want described>, or
+;; C-h v <Name of variable you want described>.
+
+;; To customize f90-mode for your taste, use, for example:
+;; (you don't have to specify values for all the parameters below)
+;;
+;;(add-hook 'f90-mode-hook
+;; ;; These are the default values.
+;; '(lambda () (setq f90-do-indent 3
+;; f90-if-indent 3
+;; f90-type-indent 3
+;; f90-program-indent 2
+;; f90-continuation-indent 5
+;; f90-comment-region "!!$"
+;; f90-directive-comment-re "!hpf\\$"
+;; f90-indented-comment-re "!"
+;; f90-break-delimiters "[-+\\*/><=,% \t]"
+;; f90-break-before-delimiters t
+;; f90-beginning-ampersand t
+;; f90-smart-end 'blink
+;; f90-auto-keyword-case nil
+;; f90-leave-line-no nil
+;; indent-tabs-mode nil
+;; f90-font-lock-keywords f90-font-lock-keywords-2
+;; )
+;; ;; These are not default.
+;; (abbrev-mode 1) ; turn on abbreviation mode
+;; (f90-add-imenu-menu) ; extra menu with functions etc.
+;; (if f90-auto-keyword-case ; change case of all keywords on startup
+;; (f90-change-keywords f90-auto-keyword-case))
+;; ))
+;;
+;; in your .emacs file. You can also customize the lists
+;; f90-font-lock-keywords, etc.
+;;
+;; The auto-fill and abbreviation minor modes are accessible from the F90 menu,
+;; or by using M-x auto-fill-mode and M-x abbrev-mode, respectively.
+
+;; Remarks
+;; 1) Line numbers are by default left-justified. If f90-leave-line-no is
+;; non-nil, the line numbers are never touched.
+;; 2) Multi-; statements like "do i=1,20 ; j=j+i ; end do" are not handled
+;; correctly, but I imagine them to be rare.
+;; 3) Regexps for hilit19 are no longer supported.
+;; 4) For FIXED FORMAT code, use fortran mode.
+;; 5) This mode does not work under emacs-18.x.
+;; 6) Preprocessor directives, i.e., lines starting with # are left-justified
+;; and are untouched by all case-changing commands. There is, at present, no
+;; mechanism for treating multi-line directives (continued by \ ).
+;; 7) f77 do-loops do 10 i=.. ; ; 10 continue are not correctly indented.
+;; You are urged to use f90-do loops (with labels if you wish).
+;; 8) The highlighting mode under XEmacs is not as complete as under Emacs.
+
+;; List of user commands
+;; f90-previous-statement f90-next-statement
+;; f90-beginning-of-subprogram f90-end-of-subprogram f90-mark-subprogram
+;; f90-comment-region
+;; f90-indent-line f90-indent-new-line
+;; f90-indent-region (can be called by calling indent-region)
+;; f90-indent-subprogram
+;; f90-break-line f90-join-lines
+;; f90-fill-region
+;; f90-insert-end
+;; f90-upcase-keywords f90-upcase-region-keywords
+;; f90-downcase-keywords f90-downcase-region-keywords
+;; f90-capitalize-keywords f90-capitalize-region-keywords
+;; f90-add-imenu-menu
+;; f90-font-lock-1, f90-font-lock-2, f90-font-lock-3, f90-font-lock-4
+
+;; Original author's thanks
+;; Thanks to all the people who have tested the mode. Special thanks to Jens
+;; Bloch Helmers for encouraging me to write this code, for creative
+;; suggestions as well as for the lists of hpf-commands.
+;; Also thanks to the authors of the fortran and pascal modes, on which some
+;; of this code is built.
+
+;;; Code:
+
+;; TODO
+;; Support for align.
+;; OpenMP, preprocessor highlighting.
+
+(defvar comment-auto-fill-only-comments)
+(defvar font-lock-keywords)
+
+;; User options
+
+(defgroup f90 nil
+ "Major mode for editing free format Fortran 90,95 code."
+ :group 'languages)
+
+(defgroup f90-indent nil
+ "Indentation in free format Fortran."
+ :prefix "f90-"
+ :group 'f90)
+
+
+(defcustom f90-do-indent 3
+ "*Extra indentation applied to DO blocks."
+ :type 'integer
+ :group 'f90-indent)
+
+(defcustom f90-if-indent 3
+ "*Extra indentation applied to IF, SELECT CASE, WHERE and FORALL blocks."
+ :type 'integer
+ :group 'f90-indent)
+
+(defcustom f90-type-indent 3
+ "*Extra indentation applied to TYPE, INTERFACE and BLOCK DATA blocks."
+ :type 'integer
+ :group 'f90-indent)
+
+(defcustom f90-program-indent 2
+ "*Extra indentation applied to PROGRAM, MODULE, SUBROUTINE, FUNCTION blocks."
+ :type 'integer
+ :group 'f90-indent)
+
+(defcustom f90-continuation-indent 5
+ "*Extra indentation applied to continuation lines."
+ :type 'integer
+ :group 'f90-indent)
+
+(defcustom f90-comment-region "!!$"
+ "*String inserted by \\[f90-comment-region] at start of each line in region."
+ :type 'string
+ :group 'f90-indent)
+
+(defcustom f90-indented-comment-re "!"
+ "*Regexp matching comments to indent as code."
+ :type 'regexp
+ :group 'f90-indent)
+
+(defcustom f90-directive-comment-re "!hpf\\$"
+ "*Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented."
+ :type 'regexp
+ :group 'f90-indent)
+
+(defcustom f90-beginning-ampersand t
+ "*Non-nil gives automatic insertion of \& at start of continuation line."
+ :type 'boolean
+ :group 'f90)
+
+(defcustom f90-smart-end 'blink
+ "*Qualification of END statements according to the matching block start.
+For example, the END that closes an IF block is changed to END
+IF. If the block has a label, this is added as well. Allowed
+values are 'blink, 'no-blink, and nil. If nil, nothing is done.
+The other two settings have the same effect, but 'blink
+additionally blinks the cursor to the start of the block."
+ :type '(choice (const blink) (const no-blink) (const nil))
+ :group 'f90)
+
+(defcustom f90-break-delimiters "[-+\\*/><=,% \t]"
+ "*Regexp matching delimiter characters at which lines may be broken.
+There are certain tokens comprised entirely of characters
+matching this regexp that should not be split, and these are
+specified by the constant `f90-no-break-re'."
+ :type 'regexp
+ :group 'f90)
+
+(defcustom f90-break-before-delimiters t
+ "*Non-nil causes `f90-do-auto-fill' to break lines before delimiters."
+ :type 'boolean
+ :group 'f90)
+
+(defcustom f90-auto-keyword-case nil
+ "*Automatic case conversion of keywords.
+The options are 'downcase-word, 'upcase-word, 'capitalize-word and nil."
+ :type '(choice (const downcase-word) (const upcase-word)
+ (const capitalize-word) (const nil))
+ :group 'f90)
+
+(defcustom f90-leave-line-no nil
+ "*If non-nil, line numbers are not left justified."
+ :type 'boolean
+ :group 'f90)
+
+(defcustom f90-mode-hook nil
+ "Hook run when entering F90 mode."
+ :type 'hook
+ :options '(f90-add-imenu-menu)
+ :group 'f90)
+
+;; User options end here.
+
+(defconst f90-keywords-re
+ (regexp-opt '("allocatable" "allocate" "assign" "assignment" "backspace"
+ "block" "call" "case" "character" "close" "common" "complex"
+ "contains" "continue" "cycle" "data" "deallocate"
+ "dimension" "do" "double" "else" "elseif" "elsewhere" "end"
+ "enddo" "endfile" "endif" "entry" "equivalence" "exit"
+ "external" "forall" "format" "function" "goto" "if"
+ "implicit" "include" "inquire" "integer" "intent"
+ "interface" "intrinsic" "logical" "module" "namelist" "none"
+ "nullify" "only" "open" "operator" "optional" "parameter"
+ "pause" "pointer" "precision" "print" "private" "procedure"
+ "program" "public" "read" "real" "recursive" "result" "return"
+ "rewind" "save" "select" "sequence" "stop" "subroutine"
+ "target" "then" "type" "use" "where" "while" "write"
+ ;; F95 keywords.
+ "elemental" "pure") 'words)
+ "Regexp for F90 keywords.")
+
+(defconst f90-keywords-level-3-re
+ (regexp-opt
+ '("allocatable" "allocate" "assign" "assignment" "backspace"
+ "close" "deallocate" "dimension" "endfile" "entry" "equivalence"
+ "external" "inquire" "intent" "intrinsic" "nullify" "only" "open"
+ "operator" "optional" "parameter" "pause" "pointer" "print" "private"
+ "public" "read" "recursive" "result" "rewind" "save" "select"
+ "sequence" "target" "write"
+ ;; F95 keywords.
+ "elemental" "pure") 'words)
+ "Keyword-regexp for font-lock level >= 3.")
+
+(defconst f90-procedures-re
+ (concat "\\<"
+ (regexp-opt
+ '("abs" "achar" "acos" "adjustl" "adjustr" "aimag" "aint"
+ "all" "allocated" "anint" "any" "asin" "associated"
+ "atan" "atan2" "bit_size" "btest" "ceiling" "char" "cmplx"
+ "conjg" "cos" "cosh" "count" "cshift" "date_and_time" "dble"
+ "digits" "dim" "dot_product" "dprod" "eoshift" "epsilon"
+ "exp" "exponent" "floor" "fraction" "huge" "iachar" "iand"
+ "ibclr" "ibits" "ibset" "ichar" "ieor" "index" "int" "ior"
+ "ishft" "ishftc" "kind" "lbound" "len" "len_trim" "lge" "lgt"
+ "lle" "llt" "log" "log10" "logical" "matmul" "max"
+ "maxexponent" "maxloc" "maxval" "merge" "min" "minexponent"
+ "minloc" "minval" "mod" "modulo" "mvbits" "nearest" "nint"
+ "not" "pack" "precision" "present" "product" "radix"
+ ;; Real is taken out here to avoid highlighting declarations.
+ "random_number" "random_seed" "range" ;; "real"
+ "repeat" "reshape" "rrspacing" "scale" "scan"
+ "selected_int_kind" "selected_real_kind" "set_exponent"
+ "shape" "sign" "sin" "sinh" "size" "spacing" "spread" "sqrt"
+ "sum" "system_clock" "tan" "tanh" "tiny" "transfer"
+ "transpose" "trim" "ubound" "unpack" "verify"
+ ;; F95 intrinsic functions.
+ "null" "cpu_time") t)
+ ;; A left parenthesis to avoid highlighting non-procedures.
+ "[ \t]*(")
+ "Regexp whose first part matches F90 intrinsic procedures.")
+
+(defconst f90-operators-re
+ (concat "\\."
+ (regexp-opt '("and" "eq" "eqv" "false" "ge" "gt" "le" "lt" "ne"
+ "neqv" "not" "or" "true") t)
+ "\\.")
+ "Regexp matching intrinsic operators.")
+
+(defconst f90-hpf-keywords-re
+ (regexp-opt
+ ;; Intrinsic procedures.
+ '("all_prefix" "all_scatter" "all_suffix" "any_prefix"
+ "any_scatter" "any_suffix" "copy_prefix" "copy_scatter"
+ "copy_suffix" "count_prefix" "count_scatter" "count_suffix"
+ "grade_down" "grade_up"
+ "hpf_alignment" "hpf_distribution" "hpf_template" "iall" "iall_prefix"
+ "iall_scatter" "iall_suffix" "iany" "iany_prefix" "iany_scatter"
+ "iany_suffix" "ilen" "iparity" "iparity_prefix"
+ "iparity_scatter" "iparity_suffix" "leadz" "maxval_prefix"
+ "maxval_scatter" "maxval_suffix" "minval_prefix" "minval_scatter"
+ "minval_suffix" "number_of_processors" "parity"
+ "parity_prefix" "parity_scatter" "parity_suffix" "popcnt" "poppar"
+ "processors_shape" "product_prefix" "product_scatter"
+ "product_suffix" "sum_prefix" "sum_scatter" "sum_suffix"
+ ;; Directives.
+ "align" "distribute" "dynamic" "independent" "inherit" "processors"
+ "realign" "redistribute" "template"
+ ;; Keywords.
+ "block" "cyclic" "extrinsic" "new" "onto" "pure" "with") 'words)
+ "Regexp for all HPF keywords, procedures and directives.")
+
+;; Highlighting patterns.
+
+(defvar f90-font-lock-keywords-1
+ (list
+ ;; Special highlighting of "module procedure".
+ '("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face))
+ ;; Highlight definition of derived type.
+ '("\\<\\(\\(?:end[ \t]*\\)?type\\)\\>\\([^()\n]*::\\)?[ \t]*\\(\\sw+\\)"
+ (1 font-lock-keyword-face) (3 font-lock-function-name-face))
+ ;; Other functions and declarations.
+ '("\\<\\(\\(?:end[ \t]*\\)?\\(program\\|module\\|function\\|\
+subroutine\\)\\|use\\|call\\)\\>[ \t]*\\(\\sw+\\)?"
+ (1 font-lock-keyword-face) (3 font-lock-function-name-face nil t))
+ "\\<\\(\\(end[ \t]*\\)?\\(interface\\|block[ \t]*data\\)\\|contains\\)\\>")
+ "This does fairly subdued highlighting of comments and function calls.")
+
+(defvar f90-font-lock-keywords-2
+ (append
+ f90-font-lock-keywords-1
+ (list
+ ;; Variable declarations (avoid the real function call).
+ '("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|\
+logical\\|type[ \t]*(\\sw+)\\)\\(.*::\\|[ \t]*(.*)\\)?\\([^&!\n]*\\)"
+ (1 font-lock-type-face t) (4 font-lock-variable-name-face t))
+ ;; do, if, select, where, and forall constructs.
+ '("\\<\\(end[ \t]*\\(do\\|if\\|select\\|forall\\|where\\)\\)\\>\
+\\([ \t]+\\(\\sw+\\)\\)?"
+ (1 font-lock-keyword-face) (3 font-lock-constant-face nil t))
+ '("^[ \t0-9]*\\(\\(\\sw+\\)[ \t]*:[ \t]*\\)?\\(\\(if\\|\
+do\\([ \t]*while\\)?\\|select[ \t]*case\\|where\\|forall\\)\\)\\>"
+ (2 font-lock-constant-face nil t) (3 font-lock-keyword-face))
+ ;; Implicit declaration.
+ '("\\<\\(implicit\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\
+\\|logical\\|type[ \t]*(\\sw+)\\|none\\)[ \t]*"
+ (1 font-lock-keyword-face) (2 font-lock-type-face))
+ '("\\<\\(namelist\\|common\\)[ \t]*\/\\(\\sw+\\)?\/"
+ (1 font-lock-keyword-face) (2 font-lock-constant-face nil t))
+ "\\<else\\([ \t]*if\\|where\\)?\\>"
+ '("\\(&\\)[ \t]*\\(!\\|$\\)" (1 font-lock-keyword-face))
+ "\\<\\(then\\|continue\\|format\\|include\\|stop\\|return\\)\\>"
+ '("\\<\\(exit\\|cycle\\)[ \t]*\\(\\sw+\\)?\\>"
+ (1 font-lock-keyword-face) (2 font-lock-constant-face nil t))
+ '("\\<\\(case\\)[ \t]*\\(default\\|(\\)" . 1)
+ '("\\<\\(do\\|go *to\\)\\>[ \t]*\\([0-9]+\\)"
+ (1 font-lock-keyword-face) (2 font-lock-constant-face))
+ ;; Line numbers (lines whose first character after number is letter).
+ '("^[ \t]*\\([0-9]+\\)[ \t]*[a-z]+" (1 font-lock-constant-face t))))
+ "Highlights declarations, do-loops and other constructs.")
+
+(defvar f90-font-lock-keywords-3
+ (append f90-font-lock-keywords-2
+ (list
+ f90-keywords-level-3-re
+ f90-operators-re
+ (list f90-procedures-re '(1 font-lock-keyword-face keep))
+ "\\<real\\>" ; avoid overwriting real defs
+ ))
+ "Highlights all F90 keywords and intrinsic procedures.")
+
+(defvar f90-font-lock-keywords-4
+ (append f90-font-lock-keywords-3
+ (list f90-hpf-keywords-re))
+ "Highlights all F90 and HPF keywords.")
+
+(defvar f90-font-lock-keywords
+ f90-font-lock-keywords-2
+ "*Default expressions to highlight in F90 mode.
+Can be overridden by the value of `font-lock-maximum-decoration'.")
+
+
+(defvar f90-mode-syntax-table
+ (let ((table (make-syntax-table)))
+ (modify-syntax-entry ?\! "<" table) ; begin comment
+ (modify-syntax-entry ?\n ">" table) ; end comment
+ (modify-syntax-entry ?_ "w" table) ; underscore in names
+ (modify-syntax-entry ?\' "\"" table) ; string quote
+ (modify-syntax-entry ?\" "\"" table) ; string quote
+ (modify-syntax-entry ?\` "w" table) ; for abbrevs
+ (modify-syntax-entry ?\r " " table) ; return is whitespace
+ (modify-syntax-entry ?+ "." table) ; punctuation
+ (modify-syntax-entry ?- "." table)
+ (modify-syntax-entry ?= "." table)
+ (modify-syntax-entry ?* "." table)
+ (modify-syntax-entry ?/ "." table)
+ ;; I think that the f95 standard leaves the behaviour of \
+ ;; unspecified, but that f2k will require it to be non-special.
+ ;; Use `f90-backslash-not-special' to change.
+ (modify-syntax-entry ?\\ "\\" table) ; escape chars
+ table)
+ "Syntax table used in F90 mode.")
+
+(defvar f90-mode-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "`" 'f90-abbrev-start)
+ (define-key map "\C-c;" 'f90-comment-region)
+ (define-key map "\C-\M-a" 'f90-beginning-of-subprogram)
+ (define-key map "\C-\M-e" 'f90-end-of-subprogram)
+ (define-key map "\C-\M-h" 'f90-mark-subprogram)
+ (define-key map "\C-\M-n" 'f90-end-of-block)
+ (define-key map "\C-\M-p" 'f90-beginning-of-block)
+ (define-key map "\C-\M-q" 'f90-indent-subprogram)
+ (define-key map "\C-j" 'f90-indent-new-line) ; LFD equals C-j
+ (define-key map "\r" 'newline)
+ (define-key map "\C-c\r" 'f90-break-line)
+;;; (define-key map [M-return] 'f90-break-line)
+ (define-key map "\C-c\C-a" 'f90-previous-block)
+ (define-key map "\C-c\C-e" 'f90-next-block)
+ (define-key map "\C-c\C-d" 'f90-join-lines)
+ (define-key map "\C-c\C-f" 'f90-fill-region)
+ (define-key map "\C-c\C-p" 'f90-previous-statement)
+ (define-key map "\C-c\C-n" 'f90-next-statement)
+ (define-key map "\C-c\C-w" 'f90-insert-end)
+ (define-key map "\t" 'f90-indent-line)
+ (define-key map "," 'f90-electric-insert)
+ (define-key map "+" 'f90-electric-insert)
+ (define-key map "-" 'f90-electric-insert)
+ (define-key map "*" 'f90-electric-insert)
+ (define-key map "/" 'f90-electric-insert)
+
+ (easy-menu-define f90-menu map "Menu for F90 mode."
+ `("F90"
+ ("Customization"
+ ,(custom-menu-create 'f90)
+ ["Set" Custom-set t]
+ ["Save" Custom-save t]
+ ["Reset to Current" Custom-reset-current t]
+ ["Reset to Saved" Custom-reset-saved t]
+ ["Reset to Standard Settings" Custom-reset-standard t]
+ )
+ "--"
+ ["Indent Subprogram" f90-indent-subprogram t]
+ ["Mark Subprogram" f90-mark-subprogram t]
+ ["Beginning of Subprogram" f90-beginning-of-subprogram t]
+ ["End of Subprogram" f90-end-of-subprogram t]
+ "--"
+ ["(Un)Comment Region" f90-comment-region mark-active]
+ ["Indent Region" f90-indent-region mark-active]
+ ["Fill Region" f90-fill-region mark-active]
+ "--"
+ ["Break Line at Point" f90-break-line t]
+ ["Join with Previous Line" f90-join-lines t]
+ ["Insert Block End" f90-insert-end t]
+ "--"
+ ("Highlighting"
+ ["Toggle font-lock-mode" font-lock-mode :selected font-lock-mode
+ :style toggle]
+ "--"
+ ["Light highlighting (level 1)" f90-font-lock-1 t]
+ ["Moderate highlighting (level 2)" f90-font-lock-2 t]
+ ["Heavy highlighting (level 3)" f90-font-lock-3 t]
+ ["Maximum highlighting (level 4)" f90-font-lock-4 t]
+ )
+ ("Change Keyword Case"
+ ["Upcase Keywords (buffer)" f90-upcase-keywords t]
+ ["Capitalize Keywords (buffer)" f90-capitalize-keywords t]
+ ["Downcase Keywords (buffer)" f90-downcase-keywords t]
+ "--"
+ ["Upcase Keywords (region)" f90-upcase-region-keywords
+ mark-active]
+ ["Capitalize Keywords (region)" f90-capitalize-region-keywords
+ mark-active]
+ ["Downcase Keywords (region)" f90-downcase-region-keywords
+ mark-active]
+ )
+ "--"
+ ["Toggle auto-fill" auto-fill-mode :selected auto-fill-function
+ :style toggle]
+ ["Toggle abbrev-mode" abbrev-mode :selected abbrev-mode
+ :style toggle]
+ ["Add imenu Menu" f90-add-imenu-menu
+ :active (not (lookup-key (current-local-map) [menu-bar index]))
+ :included (fboundp 'imenu-add-to-menubar)]))
+ map)
+ "Keymap used in F90 mode.")
+
+
+(defun f90-font-lock-1 ()
+ "Set `font-lock-keywords' to `f90-font-lock-keywords-1'."
+ (interactive)
+ (font-lock-mode 1)
+ (setq font-lock-keywords f90-font-lock-keywords-1)
+ (font-lock-fontify-buffer))
+
+(defun f90-font-lock-2 ()
+ "Set `font-lock-keywords' to `f90-font-lock-keywords-2'."
+ (interactive)
+ (font-lock-mode 1)
+ (setq font-lock-keywords f90-font-lock-keywords-2)
+ (font-lock-fontify-buffer))
+
+(defun f90-font-lock-3 ()
+ "Set `font-lock-keywords' to `f90-font-lock-keywords-3'."
+ (interactive)
+ (font-lock-mode 1)
+ (setq font-lock-keywords f90-font-lock-keywords-3)
+ (font-lock-fontify-buffer))
+
+(defun f90-font-lock-4 ()
+ "Set `font-lock-keywords' to `f90-font-lock-keywords-4'."
+ (interactive)
+ (font-lock-mode 1)
+ (setq font-lock-keywords f90-font-lock-keywords-4)
+ (font-lock-fontify-buffer))
+
+\f
+;; Regexps for finding program structures.
+(defconst f90-blocks-re
+ (concat "\\(block[ \t]*data\\|"
+ (regexp-opt '("do" "if" "interface" "function" "module" "program"
+ "select" "subroutine" "type" "where" "forall"))
+ "\\)\\>")
+ "Regexp potentially indicating a \"block\" of F90 code.")
+
+(defconst f90-program-block-re
+ (regexp-opt '("program" "module" "subroutine" "function") 'paren)
+ "Regexp used to locate the start/end of a \"subprogram\".")
+
+(defconst f90-else-like-re
+ "\\(else\\([ \t]*if\\|where\\)?\\|case[ \t]*\\(default\\|(\\)\\)"
+ "Regexp matching an ELSE IF, ELSEWHERE, CASE statement.")
+
+(defconst f90-end-if-re
+ (concat "end[ \t]*"
+ (regexp-opt '("if" "select" "where" "forall") 'paren)
+ "\\>")
+ "Regexp matching the end of an IF, SELECT, WHERE, FORALL block.")
+
+(defconst f90-end-type-re
+ "end[ \t]*\\(type\\|interface\\|block[ \t]*data\\)\\>"
+ "Regexp matching the end of a TYPE, INTERFACE, BLOCK DATA section.")
+
+(defconst f90-type-def-re
+ "\\<\\(type\\)\\>\\(?:[^()\n]*::\\)?[ \t]*\\(\\sw+\\)"
+ "Regexp matching the definition of a derived type.")
+
+(defconst f90-no-break-re
+ (regexp-opt '("**" "//" "=>" ">=" "<=" "==" "/=") 'paren)
+ "Regexp specifying where not to break lines when filling.
+This regexp matches certain tokens comprised entirely of
+characters matching the regexp `f90-break-delimiters' that should
+not be split by filling. Each element is assumed to be two
+characters long.")
+
+(defvar f90-cache-position nil
+ "Temporary position used to speed up region operations.")
+(make-variable-buffer-local 'f90-cache-position)
+
+\f
+;; Hideshow support.
+(defconst f90-end-block-re
+ (concat "^[ \t0-9]*\\<end[ \t]*"
+ (regexp-opt '("do" "if" "forall" "function" "interface"
+ "module" "program" "select" "subroutine"
+ "type" "where" ) t)
+ "[ \t]*\\sw*")
+ "Regexp matching the end of an F90 \"block\", from the line start.
+Used in the F90 entry in `hs-special-modes-alist'.")
+
+;; Ignore the fact that FUNCTION, SUBROUTINE, WHERE, FORALL have a
+;; following "(". DO, CASE, IF can have labels.
+(defconst f90-start-block-re
+ (concat
+ "^[ \t0-9]*" ; statement number
+ "\\(\\("
+ "\\(\\sw+[ \t]*:[ \t]*\\)?" ; structure label
+ "\\(do\\|select[ \t]*case\\|"
+ ;; See comments in fortran-start-block-re for the problems of IF.
+ "if[ \t]*(\\(.*\\|"
+ ".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|"
+ ;; Distinguish WHERE block from isolated WHERE.
+ "\\(where\\|forall\\)[ \t]*(.*)[ \t]*\\(!\\|$\\)\\)\\)"
+ "\\|"
+ "program\\|interface\\|module\\|type\\|function\\|subroutine"
+ "\\)"
+ "[ \t]*")
+ "Regexp matching the start of an F90 \"block\", from the line start.
+A simple regexp cannot do this in fully correct fashion, so this
+tries to strike a compromise between complexity and flexibility.
+Used in the F90 entry in `hs-special-modes-alist'.")
+
+;; hs-special-modes-alist is autoloaded.
+(add-to-list 'hs-special-modes-alist
+ `(f90-mode ,f90-start-block-re ,f90-end-block-re
+ "!" f90-end-of-block nil))
+
+\f
+;; Imenu support.
+(defvar f90-imenu-generic-expression
+ (let ((good-char "[^!\"\&\n \t]") (not-e "[^e!\n\"\& \t]")
+ (not-n "[^n!\n\"\& \t]") (not-d "[^d!\n\"\& \t]"))
+ (list
+ '(nil "^[ \t0-9]*program[ \t]+\\(\\sw+\\)" 1)
+ '("Modules" "^[ \t0-9]*module[ \t]+\\(\\sw+\\)[ \t]*\\(!\\|$\\)" 1)
+ '("Types" "^[ \t0-9]*type[ \t]+\\(\\sw+\\)" 1)
+ (list
+ "Procedures"
+ (concat
+ "^[ \t0-9]*"
+ "\\("
+ ;; At least three non-space characters before function/subroutine.
+ ;; Check that the last three non-space characters do not spell E N D.
+ "[^!\"\&\n]*\\("
+ not-e good-char good-char "\\|"
+ good-char not-n good-char "\\|"
+ good-char good-char not-d "\\)"
+ "\\|"
+ ;; Less than three non-space characters before function/subroutine.
+ good-char "?" good-char "?"
+ "\\)"
+ "[ \t]*\\(function\\|subroutine\\)[ \t]+\\(\\sw+\\)")
+ 4)))
+ "Value for `imenu-generic-expression' in F90 mode.")
+
+(defun f90-add-imenu-menu ()
+ "Add an imenu menu to the menubar."
+ (interactive)
+ (if (lookup-key (current-local-map) [menu-bar index])
+ (message "%s" "F90-imenu already exists.")
+ (imenu-add-to-menubar "F90-imenu")
+ (redraw-frame (selected-frame))))
+
+\f
+;; Abbrevs have generally two letters, except standard types `c, `i, `r, `t.
+(defvar f90-mode-abbrev-table
+ (let (abbrevs-changed)
+ (define-abbrev-table 'f90-mode-abbrev-table nil)
+ ;; Use the 6th arg (SYSTEM-FLAG) of define-abbrev if possible.
+ ;; A little baroque to quieten the byte-compiler.
+ (mapcar
+ (function (lambda (element)
+ (condition-case nil
+ (apply 'define-abbrev f90-mode-abbrev-table
+ (append element '(nil 0 t)))
+ (wrong-number-of-arguments
+ (apply 'define-abbrev f90-mode-abbrev-table
+ (append element '(nil 0)))))))
+ '(("`al" "allocate" )
+ ("`ab" "allocatable" )
+ ("`as" "assignment" )
+ ("`ba" "backspace" )
+ ("`bd" "block data" )
+ ("`c" "character" )
+ ("`cl" "close" )
+ ("`cm" "common" )
+ ("`cx" "complex" )
+ ("`cn" "contains" )
+ ("`cy" "cycle" )
+ ("`de" "deallocate" )
+ ("`df" "define" )
+ ("`di" "dimension" )
+ ("`dw" "do while" )
+ ("`el" "else" )
+ ("`eli" "else if" )
+ ("`elw" "elsewhere" )
+ ("`eq" "equivalence" )
+ ("`ex" "external" )
+ ("`ey" "entry" )
+ ("`fl" "forall" )
+ ("`fo" "format" )
+ ("`fu" "function" )
+ ("`fa" ".false." )
+ ("`im" "implicit none")
+ ("`in" "include" )
+ ("`i" "integer" )
+ ("`it" "intent" )
+ ("`if" "interface" )
+ ("`lo" "logical" )
+ ("`mo" "module" )
+ ("`na" "namelist" )
+ ("`nu" "nullify" )
+ ("`op" "optional" )
+ ("`pa" "parameter" )
+ ("`po" "pointer" )
+ ("`pr" "print" )
+ ("`pi" "private" )
+ ("`pm" "program" )
+ ("`pu" "public" )
+ ("`r" "real" )
+ ("`rc" "recursive" )
+ ("`rt" "return" )
+ ("`rw" "rewind" )
+ ("`se" "select" )
+ ("`sq" "sequence" )
+ ("`su" "subroutine" )
+ ("`ta" "target" )
+ ("`tr" ".true." )
+ ("`t" "type" )
+ ("`wh" "where" )
+ ("`wr" "write" )))
+ f90-mode-abbrev-table)
+ "Abbrev table for F90 mode.")
+\f
+
+;;;###autoload
+(defun f90-mode ()
+ "Major mode for editing Fortran 90,95 code in free format.
+For fixed format code, use `fortran-mode'.
+
+\\[f90-indent-line] indents the current line.
+\\[f90-indent-new-line] indents current line and creates a new\
+ indented line.
+\\[f90-indent-subprogram] indents the current subprogram.
+
+Type `? or `\\[help-command] to display a list of built-in\
+ abbrevs for F90 keywords.
+
+Key definitions:
+\\{f90-mode-map}
+
+Variables controlling indentation style and extra features:
+
+`f90-do-indent'
+ Extra indentation within do blocks (default 3).
+`f90-if-indent'
+ Extra indentation within if/select case/where/forall blocks (default 3).
+`f90-type-indent'
+ Extra indentation within type/interface/block-data blocks (default 3).
+`f90-program-indent'
+ Extra indentation within program/module/subroutine/function blocks
+ (default 2).
+`f90-continuation-indent'
+ Extra indentation applied to continuation lines (default 5).
+`f90-comment-region'
+ String inserted by function \\[f90-comment-region] at start of each
+ line in region (default \"!!!$\").
+`f90-indented-comment-re'
+ Regexp determining the type of comment to be intended like code
+ (default \"!\").
+`f90-directive-comment-re'
+ Regexp of comment-like directive like \"!HPF\\\\$\", not to be indented
+ (default \"!hpf\\\\$\").
+`f90-break-delimiters'
+ Regexp holding list of delimiters at which lines may be broken
+ (default \"[-+*/><=,% \\t]\").
+`f90-break-before-delimiters'
+ Non-nil causes `f90-do-auto-fill' to break lines before delimiters
+ (default t).
+`f90-beginning-ampersand'
+ Automatic insertion of \& at beginning of continuation lines (default t).
+`f90-smart-end'
+ From an END statement, check and fill the end using matching block start.
+ Allowed values are 'blink, 'no-blink, and nil, which determine
+ whether to blink the matching beginning (default 'blink).
+`f90-auto-keyword-case'
+ Automatic change of case of keywords (default nil).
+ The possibilities are 'downcase-word, 'upcase-word, 'capitalize-word.
+`f90-leave-line-no'
+ Do not left-justify line numbers (default nil).
+`f90-keywords-re'
+ List of keywords used for highlighting/upcase-keywords etc.
+
+Turning on F90 mode calls the value of the variable `f90-mode-hook'
+with no args, if that value is non-nil."
+ (interactive)
+ (kill-all-local-variables)
+ (setq major-mode 'f90-mode
+ mode-name "F90"
+ local-abbrev-table f90-mode-abbrev-table)
+ (set-syntax-table f90-mode-syntax-table)
+ (use-local-map f90-mode-map)
+ (set (make-local-variable 'indent-line-function) 'f90-indent-line)
+ (set (make-local-variable 'indent-region-function) 'f90-indent-region)
+ (set (make-local-variable 'require-final-newline) mode-require-final-newline)
+ (set (make-local-variable 'comment-start) "!")
+ (set (make-local-variable 'comment-start-skip) "!+ *")
+ (set (make-local-variable 'comment-indent-function) 'f90-comment-indent)
+ (set (make-local-variable 'abbrev-all-caps) t)
+ (set (make-local-variable 'normal-auto-fill-function) 'f90-do-auto-fill)
+ (setq indent-tabs-mode nil) ; auto buffer local
+ (set (make-local-variable 'font-lock-defaults)
+ '((f90-font-lock-keywords f90-font-lock-keywords-1
+ f90-font-lock-keywords-2
+ f90-font-lock-keywords-3
+ f90-font-lock-keywords-4)
+ nil t))
+ (set (make-local-variable 'imenu-case-fold-search) t)
+ (set (make-local-variable 'imenu-generic-expression)
+ f90-imenu-generic-expression)
+ (set (make-local-variable 'beginning-of-defun-function)
+ 'f90-beginning-of-subprogram)
+ (set (make-local-variable 'end-of-defun-function) 'f90-end-of-subprogram)
+ (set (make-local-variable 'add-log-current-defun-function)
+ #'f90-current-defun)
+ (run-mode-hooks 'f90-mode-hook))
+
+\f
+;; Inline-functions.
+(defsubst f90-in-string ()
+ "Return non-nil if point is inside a string.
+Checks from `point-min', or `f90-cache-position', if that is non-nil
+and lies before point."
+ (let ((beg-pnt
+ (if (and f90-cache-position (> (point) f90-cache-position))
+ f90-cache-position
+ (point-min))))
+ (nth 3 (parse-partial-sexp beg-pnt (point)))))
+
+(defsubst f90-in-comment ()
+ "Return non-nil if point is inside a comment.
+Checks from `point-min', or `f90-cache-position', if that is non-nil
+and lies before point."
+ (let ((beg-pnt
+ (if (and f90-cache-position (> (point) f90-cache-position))
+ f90-cache-position
+ (point-min))))
+ (nth 4 (parse-partial-sexp beg-pnt (point)))))
+
+(defsubst f90-line-continued ()
+ "Return t if the current line is a continued one.
+This includes comment lines embedded in continued lines, but
+not the last line of a continued statement."
+ (save-excursion
+ (beginning-of-line)
+ (while (and (looking-at "[ \t]*\\(!\\|$\\)") (zerop (forward-line -1))))
+ (end-of-line)
+ (while (f90-in-comment)
+ (search-backward "!" (line-beginning-position))
+ (skip-chars-backward "!"))
+ (skip-chars-backward " \t")
+ (= (preceding-char) ?&)))
+
+;; GM this is not right, eg a continuation line starting with a number.
+;; Need f90-code-start-position function.
+;; And yet, things seems to work with this...
+;; cf f90-indent-line
+;; (beginning-of-line) ; digits after & \n are not line-nos
+;; (if (not (save-excursion (and (f90-previous-statement)
+;; (f90-line-continued))))
+;; (f90-indent-line-no)
+(defsubst f90-current-indentation ()
+ "Return indentation of current line.
+Line-numbers are considered whitespace characters."
+ (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")))
+
+(defsubst f90-indent-to (col &optional no-line-number)
+ "Indent current line to column COL.
+If optional argument NO-LINE-NUMBER is nil, jump over a possible
+line-number before indenting."
+ (beginning-of-line)
+ (or no-line-number
+ (skip-chars-forward " \t0-9"))
+ (delete-horizontal-space)
+ ;; Leave >= 1 space after line number.
+ (indent-to col (if (zerop (current-column)) 0 1)))
+
+(defsubst f90-get-present-comment-type ()
+ "If point lies within a comment, return the string starting the comment.
+For example, \"!\" or \"!!\", followed by the appropriate amount of
+whitespace, if any."
+ ;; Include the whitespace for consistent auto-filling of comment blocks.
+ (save-excursion
+ (when (f90-in-comment)
+ (beginning-of-line)
+ (re-search-forward "!+[ \t]*" (line-end-position))
+ (while (f90-in-string)
+ (re-search-forward "!+[ \t]*" (line-end-position)))
+ (match-string-no-properties 0))))
+
+(defsubst f90-equal-symbols (a b)
+ "Compare strings A and B neglecting case and allowing for nil value."
+ (equal (if a (downcase a) nil)
+ (if b (downcase b) nil)))
+
+(defsubst f90-looking-at-do ()
+ "Return (\"do\" NAME) if a do statement starts after point.
+NAME is nil if the statement has no label."
+ (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(do\\)\\>")
+ (list (match-string 3) (match-string 2))))
+
+(defsubst f90-looking-at-select-case ()
+ "Return (\"select\" NAME) if a select-case statement starts after point.
+NAME is nil if the statement has no label."
+ (if (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\
+\\(select\\)[ \t]*case[ \t]*(")
+ (list (match-string 3) (match-string 2))))
+
+(defsubst f90-looking-at-if-then ()
+ "Return (\"if\" NAME) if an if () then statement starts after point.
+NAME is nil if the statement has no label."
+ (save-excursion
+ (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\\(if\\)\\>")
+ (let ((struct (match-string 3))
+ (label (match-string 2))
+ (pos (scan-lists (point) 1 0)))
+ (and pos (goto-char pos))
+ (skip-chars-forward " \t")
+ (if (or (looking-at "then\\>")
+ (when (f90-line-continued)
+ (f90-next-statement)
+ (skip-chars-forward " \t0-9&")
+ (looking-at "then\\>")))
+ (list struct label))))))
+
+(defsubst f90-looking-at-where-or-forall ()
+ "Return (KIND NAME) if a where or forall block starts after point.
+NAME is nil if the statement has no label."
+ (save-excursion
+ (when (looking-at "\\(\\(\\sw+\\)[ \t]*:\\)?[ \t]*\
+\\(where\\|forall\\)\\>")
+ (let ((struct (match-string 3))
+ (label (match-string 2))
+ (pos (scan-lists (point) 1 0)))
+ (and pos (goto-char pos))
+ (skip-chars-forward " \t")
+ (if (looking-at "\\(!\\|$\\)") (list struct label))))))
+
+(defsubst f90-looking-at-type-like ()
+ "Return (KIND NAME) if a type/interface/block-data block starts after point.
+NAME is non-nil only for type."
+ (cond
+ ((looking-at f90-type-def-re)
+ (list (match-string 1) (match-string 2)))
+ ((looking-at "\\(interface\\|block[\t]*data\\)\\>")
+ (list (match-string 1) nil))))
+
+(defsubst f90-looking-at-program-block-start ()
+ "Return (KIND NAME) if a program block with name NAME starts after point."
+;;;NAME is nil for an un-named main PROGRAM block."
+ (cond
+ ((looking-at "\\(program\\)[ \t]+\\(\\sw+\\)\\>")
+ (list (match-string 1) (match-string 2)))
+ ((and (not (looking-at "module[ \t]*procedure\\>"))
+ (looking-at "\\(module\\)[ \t]+\\(\\sw+\\)\\>"))
+ (list (match-string 1) (match-string 2)))
+ ((and (not (looking-at "end[ \t]*\\(function\\|subroutine\\)"))
+ (looking-at "[^!'\"\&\n]*\\(function\\|subroutine\\)[ \t]+\
+\\(\\sw+\\)"))
+ (list (match-string 1) (match-string 2)))))
+;; Following will match an un-named main program block; however
+;; one needs to check if there is an actual PROGRAM statement after
+;; point (and before any END program). Adding this will require
+;; change to eg f90-calculate-indent.
+;;; ((save-excursion
+;;; (not (f90-previous-statement)))
+;;; '("program" nil))))
+
+(defsubst f90-looking-at-program-block-end ()
+ "Return (KIND NAME) if a block with name NAME ends after point."
+ (if (looking-at (concat "end[ \t]*" f90-blocks-re
+ "?\\([ \t]+\\(\\sw+\\)\\)?\\>"))
+ (list (match-string 1) (match-string 3))))
+
+(defsubst f90-comment-indent ()
+ "Return the indentation to be used for a comment starting at point.
+Used for `comment-indent-function' by F90 mode.
+\"!!!\", `f90-directive-comment-re', variable `f90-comment-region' return 0.
+`f90-indented-comment-re' (if not trailing code) calls `f90-calculate-indent'.
+All others return `comment-column', leaving at least one space after code."
+ (cond ((looking-at "!!!") 0)
+ ((and f90-directive-comment-re
+ (looking-at f90-directive-comment-re)) 0)
+ ((looking-at (regexp-quote f90-comment-region)) 0)
+ ((and (looking-at f90-indented-comment-re)
+ ;; Don't attempt to indent trailing comment as code.
+ (save-excursion
+ (skip-chars-backward " \t")
+ (bolp)))
+ (f90-calculate-indent))
+ (t (skip-chars-backward " \t")
+ (max (if (bolp) 0 (1+ (current-column))) comment-column))))
+
+(defsubst f90-present-statement-cont ()
+ "Return continuation properties of present statement.
+Possible return values are:
+single - statement is not continued.
+begin - current line is the first in a continued statement.
+end - current line is the last in a continued statement
+middle - current line is neither first nor last in a continued statement.
+Comment lines embedded amongst continued lines return 'middle."
+ (let (pcont cont)
+ (save-excursion
+ (setq pcont (if (f90-previous-statement) (f90-line-continued))))
+ (setq cont (f90-line-continued))
+ (cond ((and (not pcont) (not cont)) 'single)
+ ((and (not pcont) cont) 'begin)
+ ((and pcont (not cont)) 'end)
+ ((and pcont cont) 'middle)
+ (t (error "The impossible occurred")))))
+
+(defsubst f90-indent-line-no ()
+ "If `f90-leave-line-no' is nil, left-justify a line number.
+Leaves point at the first non-blank character after the line number.
+Call from beginning of line."
+ (and (null f90-leave-line-no) (looking-at "[ \t]+[0-9]")
+ (delete-horizontal-space))
+ (skip-chars-forward " \t0-9"))
+
+(defsubst f90-no-block-limit ()
+ "Return nil if point is at the edge of a code block.
+Searches line forward for \"function\" or \"subroutine\",
+if all else fails."
+ (save-excursion
+ (not (or (looking-at "end")
+ (looking-at "\\(do\\|if\\|else\\(if\\|where\\)?\
+\\|select[ \t]*case\\|case\\|where\\|forall\\)\\>")
+ (looking-at "\\(program\\|module\\|interface\\|\
+block[ \t]*data\\)\\>")
+ (looking-at "\\(contains\\|\\sw+[ \t]*:\\)")
+ (looking-at f90-type-def-re)
+ (re-search-forward "\\(function\\|subroutine\\)"
+ (line-end-position) t)))))
+
+(defsubst f90-update-line ()
+ "Change case of current line as per `f90-auto-keyword-case'."
+ (if f90-auto-keyword-case
+ (f90-change-keywords f90-auto-keyword-case
+ (line-beginning-position) (line-end-position))))
+\f
+(defun f90-electric-insert (&optional arg)
+ "Change keyword case and auto-fill line as operators are inserted."
+ (interactive "*p")
+ (self-insert-command arg)
+ (if auto-fill-function (f90-do-auto-fill) ; also updates line
+ (f90-update-line)))
+
+
+(defun f90-get-correct-indent ()
+ "Get correct indent for a line starting with line number.
+Does not check type and subprogram indentation."
+ (let ((epnt (line-end-position)) icol cont)
+ (save-excursion
+ (while (and (f90-previous-statement)
+ (or (progn
+ (setq cont (f90-present-statement-cont))
+ (or (eq cont 'end) (eq cont 'middle)))
+ (looking-at "[ \t]*[0-9]"))))
+ (setq icol (current-indentation))
+ (beginning-of-line)
+ (when (re-search-forward "\\(if\\|do\\|select\\|where\\|forall\\)"
+ (line-end-position) t)
+ (beginning-of-line)
+ (skip-chars-forward " \t")
+ (cond ((f90-looking-at-do)
+ (setq icol (+ icol f90-do-indent)))
+ ((or (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)
+ (f90-looking-at-select-case))
+ (setq icol (+ icol f90-if-indent))))
+ (end-of-line))
+ (while (re-search-forward
+ "\\(if\\|do\\|select\\|where\\|forall\\)" epnt t)
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((f90-looking-at-do)
+ (setq icol (+ icol f90-do-indent)))
+ ((or (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)
+ (f90-looking-at-select-case))
+ (setq icol (+ icol f90-if-indent)))
+ ((looking-at f90-end-if-re)
+ (setq icol (- icol f90-if-indent)))
+ ((looking-at "end[ \t]*do\\>")
+ (setq icol (- icol f90-do-indent))))
+ (end-of-line))
+ icol)))
+
+(defun f90-calculate-indent ()
+ "Calculate the indent column based on previous statements."
+ (interactive)
+ (let (icol cont (case-fold-search t) (pnt (point)))
+ (save-excursion
+ (if (not (f90-previous-statement))
+ ;; If f90-previous-statement returns nil, we must have been
+ ;; called from on or before the first line of the first statement.
+ (setq icol (if (save-excursion
+ ;; f90-previous-statement has moved us over
+ ;; comment/blank lines, so we need to get
+ ;; back to the first code statement.
+ (when (looking-at "[ \t]*\\([!#]\\|$\\)")
+ (f90-next-statement))
+ (skip-chars-forward " \t0-9")
+ (f90-looking-at-program-block-start))
+ 0
+ ;; No explicit PROGRAM start statement.
+ f90-program-indent))
+ (setq cont (f90-present-statement-cont))
+ (if (eq cont 'end)
+ (while (not (eq 'begin (f90-present-statement-cont)))
+ (f90-previous-statement)))
+ (cond ((eq cont 'begin)
+ (setq icol (+ (f90-current-indentation)
+ f90-continuation-indent)))
+ ((eq cont 'middle) (setq icol (current-indentation)))
+ (t (setq icol (f90-current-indentation))
+ (skip-chars-forward " \t")
+ (if (looking-at "[0-9]")
+ (setq icol (f90-get-correct-indent))
+ (cond ((or (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)
+ (f90-looking-at-select-case)
+ (looking-at f90-else-like-re))
+ (setq icol (+ icol f90-if-indent)))
+ ((f90-looking-at-do)
+ (setq icol (+ icol f90-do-indent)))
+ ((f90-looking-at-type-like)
+ (setq icol (+ icol f90-type-indent)))
+ ((or (f90-looking-at-program-block-start)
+ (looking-at "contains[ \t]*\\($\\|!\\)"))
+ (setq icol (+ icol f90-program-indent)))))
+ (goto-char pnt)
+ (beginning-of-line)
+ (cond ((looking-at "[ \t]*$"))
+ ((looking-at "[ \t]*#") ; check for cpp directive
+ (setq icol 0))
+ (t
+ (skip-chars-forward " \t0-9")
+ (cond ((or (looking-at f90-else-like-re)
+ (looking-at f90-end-if-re))
+ (setq icol (- icol f90-if-indent)))
+ ((looking-at "end[ \t]*do\\>")
+ (setq icol (- icol f90-do-indent)))
+ ((looking-at f90-end-type-re)
+ (setq icol (- icol f90-type-indent)))
+ ((or (looking-at "contains[ \t]*\\(!\\|$\\)")
+ (f90-looking-at-program-block-end))
+ (setq icol (- icol f90-program-indent))))))
+ ))))
+ icol))
+\f
+(defun f90-previous-statement ()
+ "Move point to beginning of the previous F90 statement.
+If no previous statement is found (i.e. if called from the first
+statement in the buffer), move to the start of the buffer and
+return nil. A statement is a line which is neither blank nor a
+comment."
+ (interactive)
+ (let (not-first-statement)
+ (beginning-of-line)
+ (while (and (setq not-first-statement (zerop (forward-line -1)))
+ (looking-at "[ \t0-9]*\\(!\\|$\\|#\\)")))
+ not-first-statement))
+
+(defun f90-next-statement ()
+ "Move point to beginning of the next F90 statement.
+Return nil if no later statement is found."
+ (interactive)
+ (let (not-last-statement)
+ (beginning-of-line)
+ (while (and (setq not-last-statement
+ (and (zerop (forward-line 1))
+ (not (eobp))))
+ (looking-at "[ \t0-9]*\\(!\\|$\\)")))
+ not-last-statement))
+
+(defun f90-beginning-of-subprogram ()
+ "Move point to the beginning of the current subprogram.
+Return (TYPE NAME), or nil if not found."
+ (interactive)
+ (let ((count 1) (case-fold-search t) matching-beg)
+ (beginning-of-line)
+ (while (and (> count 0)
+ (re-search-backward f90-program-block-re nil 'move))
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((setq matching-beg (f90-looking-at-program-block-start))
+ (setq count (1- count)))
+ ((f90-looking-at-program-block-end)
+ (setq count (1+ count)))))
+ (beginning-of-line)
+ (if (zerop count)
+ matching-beg
+ ;; Note this includes the case of an un-named main program,
+ ;; in which case we go to (point-min).
+ (message "No beginning found.")
+ nil)))
+
+(defun f90-end-of-subprogram ()
+ "Move point to the end of the current subprogram.
+Return (TYPE NAME), or nil if not found."
+ (interactive)
+ (let ((case-fold-search t)
+ (count 1)
+ matching-end)
+ (end-of-line)
+ (while (and (> count 0)
+ (re-search-forward f90-program-block-re nil 'move))
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((f90-looking-at-program-block-start)
+ (setq count (1+ count)))
+ ((setq matching-end (f90-looking-at-program-block-end))
+ (setq count (1- count))))
+ (end-of-line))
+ ;; This means f90-end-of-subprogram followed by f90-start-of-subprogram
+ ;; has a net non-zero effect, which seems odd.
+;;; (forward-line 1)
+ (if (zerop count)
+ matching-end
+ (message "No end found.")
+ nil)))
+
+
+(defun f90-end-of-block (&optional num)
+ "Move point forward to the end of the current code block.
+With optional argument NUM, go forward that many balanced blocks.
+If NUM is negative, go backward to the start of a block. Checks
+for consistency of block types and labels (if present), and
+completes outermost block if `f90-smart-end' is non-nil.
+Interactively, pushes mark before moving point."
+ (interactive "p")
+ (if (interactive-p) (push-mark (point) t)) ; can move some distance
+ (and num (< num 0) (f90-beginning-of-block (- num)))
+ (let ((f90-smart-end (if f90-smart-end 'no-blink)) ; for final match-end
+ (case-fold-search t)
+ (count (or num 1))
+ start-list start-this start-type start-label end-type end-label)
+ (end-of-line) ; probably want this
+ (while (and (> count 0) (re-search-forward f90-blocks-re nil 'move))
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((or (f90-in-string) (f90-in-comment)))
+ ((setq start-this
+ (or
+ (f90-looking-at-do)
+ (f90-looking-at-select-case)
+ (f90-looking-at-type-like)
+ (f90-looking-at-program-block-start)
+ (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)))
+ (setq start-list (cons start-this start-list) ; not add-to-list!
+ count (1+ count)))
+ ((looking-at (concat "end[ \t]*" f90-blocks-re
+ "[ \t]*\\(\\sw+\\)?"))
+ (setq end-type (match-string 1)
+ end-label (match-string 2)
+ count (1- count))
+ ;; Check any internal blocks.
+ (when start-list
+ (setq start-this (car start-list)
+ start-list (cdr start-list)
+ start-type (car start-this)
+ start-label (cadr start-this))
+ (or (f90-equal-symbols start-type end-type)
+ (error "End type `%s' does not match start type `%s'"
+ end-type start-type))
+ (or (f90-equal-symbols start-label end-label)
+ (error "End label `%s' does not match start label `%s'"
+ end-label start-label)))))
+ (end-of-line))
+ (if (> count 0) (error "Missing block end"))
+ ;; Check outermost block.
+ (when f90-smart-end
+ (save-excursion
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (f90-match-end)))))
+
+(defun f90-beginning-of-block (&optional num)
+ "Move point backwards to the start of the current code block.
+With optional argument NUM, go backward that many balanced blocks.
+If NUM is negative, go forward to the end of a block.
+Checks for consistency of block types and labels (if present).
+Does not check the outermost block, because it may be incomplete.
+Interactively, pushes mark before moving point."
+ (interactive "p")
+ (if (interactive-p) (push-mark (point) t))
+ (and num (< num 0) (f90-end-of-block (- num)))
+ (let ((case-fold-search t)
+ (count (or num 1))
+ end-list end-this end-type end-label
+ start-this start-type start-label)
+ (beginning-of-line) ; probably want this
+ (while (and (> count 0) (re-search-backward f90-blocks-re nil 'move))
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((or (f90-in-string) (f90-in-comment)))
+ ((looking-at (concat "end[ \t]*" f90-blocks-re
+ "[ \t]*\\(\\sw+\\)?"))
+ (setq end-list (cons (list (match-string 1) (match-string 2))
+ end-list)
+ count (1+ count)))
+ ((setq start-this
+ (or
+ (f90-looking-at-do)
+ (f90-looking-at-select-case)
+ (f90-looking-at-type-like)
+ (f90-looking-at-program-block-start)
+ (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)))
+ (setq start-type (car start-this)
+ start-label (cadr start-this)
+ count (1- count))
+ ;; Check any internal blocks.
+ (when end-list
+ (setq end-this (car end-list)
+ end-list (cdr end-list)
+ end-type (car end-this)
+ end-label (cadr end-this))
+ (or (f90-equal-symbols start-type end-type)
+ (error "Start type `%s' does not match end type `%s'"
+ start-type end-type))
+ (or (f90-equal-symbols start-label end-label)
+ (error "Start label `%s' does not match end label `%s'"
+ start-label end-label))))))
+ ;; Includes an un-named main program block.
+ (if (> count 0) (error "Missing block start"))))
+
+(defun f90-next-block (&optional num)
+ "Move point forward to the next end or start of a code block.
+With optional argument NUM, go forward that many blocks.
+If NUM is negative, go backwards.
+A block is a subroutine, if-endif, etc."
+ (interactive "p")
+ (let ((case-fold-search t)
+ (count (if num (abs num) 1)))
+ (while (and (> count 0)
+ (if (> num 0) (re-search-forward f90-blocks-re nil 'move)
+ (re-search-backward f90-blocks-re nil 'move)))
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (cond ((or (f90-in-string) (f90-in-comment)))
+ ((or
+ (looking-at "end[ \t]*")
+ (f90-looking-at-do)
+ (f90-looking-at-select-case)
+ (f90-looking-at-type-like)
+ (f90-looking-at-program-block-start)
+ (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall))
+ (setq count (1- count))))
+ (if (> num 0) (end-of-line)
+ (beginning-of-line)))))
+
+
+(defun f90-previous-block (&optional num)
+ "Move point backward to the previous end or start of a code block.
+With optional argument NUM, go backward that many blocks.
+If NUM is negative, go forwards.
+A block is a subroutine, if-endif, etc."
+ (interactive "p")
+ (f90-next-block (- (or num 1))))
+
+
+(defun f90-mark-subprogram ()
+ "Put mark at end of F90 subprogram, point at beginning, push mark."
+ (interactive)
+ (let ((pos (point)) program)
+ (f90-end-of-subprogram)
+ (push-mark)
+ (goto-char pos)
+ (setq program (f90-beginning-of-subprogram))
+ (if (fboundp 'zmacs-activate-region)
+ (zmacs-activate-region)
+ (setq mark-active t
+ deactivate-mark nil))
+ program))
+
+(defun f90-comment-region (beg-region end-region)
+ "Comment/uncomment every line in the region.
+Insert the variable `f90-comment-region' at the start of every line
+in the region, or, if already present, remove it."
+ (interactive "*r")
+ (let ((end (copy-marker end-region)))
+ (goto-char beg-region)
+ (beginning-of-line)
+ (if (looking-at (regexp-quote f90-comment-region))
+ (delete-region (point) (match-end 0))
+ (insert f90-comment-region))
+ (while (and (zerop (forward-line 1))
+ (< (point) end))
+ (if (looking-at (regexp-quote f90-comment-region))
+ (delete-region (point) (match-end 0))
+ (insert f90-comment-region)))
+ (set-marker end nil)))
+
+(defun f90-indent-line (&optional no-update)
+ "Indent current line as F90 code.
+Unless optional argument NO-UPDATE is non-nil, call `f90-update-line'
+after indenting."
+ (interactive "*P")
+ (let ((case-fold-search t)
+ (pos (point-marker))
+ indent no-line-number)
+ (beginning-of-line) ; digits after & \n are not line-nos
+ (if (not (save-excursion (and (f90-previous-statement)
+ (f90-line-continued))))
+ (f90-indent-line-no)
+ (setq no-line-number t)
+ (skip-chars-forward " \t"))
+ (if (looking-at "!")
+ (setq indent (f90-comment-indent))
+ (and f90-smart-end (looking-at "end")
+ (f90-match-end))
+ (setq indent (f90-calculate-indent)))
+ (or (= indent (current-column))
+ (f90-indent-to indent no-line-number))
+ ;; If initial point was within line's indentation,
+ ;; position after the indentation. Else stay at same point in text.
+ (and (< (point) pos)
+ (goto-char pos))
+ (if auto-fill-function
+ ;; GM NO-UPDATE not honoured, since this calls f90-update-line.
+ (f90-do-auto-fill)
+ (or no-update (f90-update-line)))
+ (set-marker pos nil)))
+
+(defun f90-indent-new-line ()
+ "Re-indent current line, insert a newline and indent the newline.
+An abbrev before point is expanded if the variable `abbrev-mode' is non-nil.
+If run in the middle of a line, the line is not broken."
+ (interactive "*")
+ (if abbrev-mode (expand-abbrev))
+ (beginning-of-line) ; reindent where likely to be needed
+ (f90-indent-line) ; calls indent-line-no, update-line
+ (end-of-line)
+ (delete-horizontal-space) ; destroy trailing whitespace
+ (let ((string (f90-in-string))
+ (cont (f90-line-continued)))
+ (and string (not cont) (insert "&"))
+ (newline)
+ (if (or string (and cont f90-beginning-ampersand)) (insert "&")))
+ (f90-indent-line 'no-update)) ; nothing to update
+
+
+;; TODO not add spaces to empty lines at the start.
+;; Why is second line getting extra indent over first?
+(defun f90-indent-region (beg-region end-region)
+ "Indent every line in region by forward parsing."
+ (interactive "*r")
+ (let ((end-region-mark (copy-marker end-region))
+ (save-point (point-marker))
+ block-list ind-lev ind-curr ind-b cont struct beg-struct end-struct)
+ (goto-char beg-region)
+ ;; First find a line which is not a continuation line or comment.
+ (beginning-of-line)
+ (while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
+ (progn (f90-indent-line 'no-update)
+ (zerop (forward-line 1)))
+ (< (point) end-region-mark)))
+ (setq cont (f90-present-statement-cont))
+ (while (and (or (eq cont 'middle) (eq cont 'end))
+ (f90-previous-statement))
+ (setq cont (f90-present-statement-cont)))
+ ;; Process present line for beginning of block.
+ (setq f90-cache-position (point))
+ (f90-indent-line 'no-update)
+ (setq ind-lev (f90-current-indentation)
+ ind-curr ind-lev)
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (setq struct nil
+ ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
+ ((or (setq struct (f90-looking-at-if-then))
+ (setq struct (f90-looking-at-select-case))
+ (setq struct (f90-looking-at-where-or-forall))
+ (looking-at f90-else-like-re))
+ f90-if-indent)
+ ((setq struct (f90-looking-at-type-like))
+ f90-type-indent)
+ ((or (setq struct (f90-looking-at-program-block-start))
+ (looking-at "contains[ \t]*\\($\\|!\\)"))
+ f90-program-indent)))
+ (if ind-b (setq ind-lev (+ ind-lev ind-b)))
+ (if struct (setq block-list (cons struct block-list)))
+ (while (and (f90-line-continued) (zerop (forward-line 1))
+ (< (point) end-region-mark))
+ (if (looking-at "[ \t]*!")
+ (f90-indent-to (f90-comment-indent))
+ (or (= (current-indentation)
+ (+ ind-curr f90-continuation-indent))
+ (f90-indent-to (+ ind-curr f90-continuation-indent) 'no-line-no))))
+ ;; Process all following lines.
+ (while (and (zerop (forward-line 1)) (< (point) end-region-mark))
+ (beginning-of-line)
+ (f90-indent-line-no)
+ (setq f90-cache-position (point))
+ (cond ((looking-at "[ \t]*$") (setq ind-curr 0))
+ ((looking-at "[ \t]*#") (setq ind-curr 0))
+ ((looking-at "!") (setq ind-curr (f90-comment-indent)))
+ ((f90-no-block-limit) (setq ind-curr ind-lev))
+ ((looking-at f90-else-like-re) (setq ind-curr
+ (- ind-lev f90-if-indent)))
+ ((looking-at "contains[ \t]*\\($\\|!\\)")
+ (setq ind-curr (- ind-lev f90-program-indent)))
+ ((setq ind-b
+ (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
+ ((or (setq struct (f90-looking-at-if-then))
+ (setq struct (f90-looking-at-select-case))
+ (setq struct (f90-looking-at-where-or-forall)))
+ f90-if-indent)
+ ((setq struct (f90-looking-at-type-like))
+ f90-type-indent)
+ ((setq struct (f90-looking-at-program-block-start))
+ f90-program-indent)))
+ (setq ind-curr ind-lev)
+ (if ind-b (setq ind-lev (+ ind-lev ind-b)))
+ (setq block-list (cons struct block-list)))
+ ((setq end-struct (f90-looking-at-program-block-end))
+ (setq beg-struct (car block-list)
+ block-list (cdr block-list))
+ (if f90-smart-end
+ (save-excursion
+ (f90-block-match (car beg-struct) (car (cdr beg-struct))
+ (car end-struct) (car (cdr end-struct)))))
+ (setq ind-b
+ (cond ((looking-at f90-end-if-re) f90-if-indent)
+ ((looking-at "end[ \t]*do\\>") f90-do-indent)
+ ((looking-at f90-end-type-re) f90-type-indent)
+ ((f90-looking-at-program-block-end)
+ f90-program-indent)))
+ (if ind-b (setq ind-lev (- ind-lev ind-b)))
+ (setq ind-curr ind-lev))
+ (t (setq ind-curr ind-lev)))
+ ;; Do the indentation if necessary.
+ (or (= ind-curr (current-column))
+ (f90-indent-to ind-curr))
+ (while (and (f90-line-continued) (zerop (forward-line 1))
+ (< (point) end-region-mark))
+ (if (looking-at "[ \t]*!")
+ (f90-indent-to (f90-comment-indent))
+ (or (= (current-indentation)
+ (+ ind-curr f90-continuation-indent))
+ (f90-indent-to
+ (+ ind-curr f90-continuation-indent) 'no-line-no)))))
+ ;; Restore point, etc.
+ (setq f90-cache-position nil)
+ (goto-char save-point)
+ (set-marker end-region-mark nil)
+ (set-marker save-point nil)
+ (if (fboundp 'zmacs-deactivate-region)
+ (zmacs-deactivate-region)
+ (deactivate-mark))))
+
+(defun f90-indent-subprogram ()
+ "Properly indent the subprogram containing point."
+ (interactive "*")
+ (save-excursion
+ (let ((program (f90-mark-subprogram)))
+ (if program
+ (progn
+ (message "Indenting %s %s..."
+ (car program) (car (cdr program)))
+ (indent-region (point) (mark) nil)
+ (message "Indenting %s %s...done"
+ (car program) (car (cdr program))))
+ (message "Indenting the whole file...")
+ (indent-region (point) (mark) nil)
+ (message "Indenting the whole file...done")))))
+
+(defun f90-break-line (&optional no-update)
+ "Break line at point, insert continuation marker(s) and indent.
+Unless in a string or comment, or if the optional argument NO-UPDATE
+is non-nil, call `f90-update-line' after inserting the continuation marker."
+ (interactive "*P")
+ (cond ((f90-in-string)
+ (insert "&\n&"))
+ ((f90-in-comment)
+ (delete-horizontal-space 'backwards) ; remove trailing whitespace
+ (insert "\n" (f90-get-present-comment-type)))
+ (t (insert "&")
+ (or no-update (f90-update-line))
+ (newline 1)
+ (if f90-beginning-ampersand (insert "&"))))
+ (indent-according-to-mode))
+
+(defun f90-find-breakpoint ()
+ "From `fill-column', search backward for break-delimiter."
+ (re-search-backward f90-break-delimiters (line-beginning-position))
+ (if (not f90-break-before-delimiters)
+ (forward-char (if (looking-at f90-no-break-re) 2 1))
+ (backward-char)
+ (or (looking-at f90-no-break-re)
+ (forward-char))))
+
+(defun f90-do-auto-fill ()
+ "Break line if non-white characters beyond `fill-column'.
+Update keyword case first."
+ (interactive "*")
+ ;; Break line before or after last delimiter (non-word char) if
+ ;; position is beyond fill-column.
+ ;; Will not break **, //, or => (as specified by f90-no-break-re).
+ (f90-update-line)
+ ;; Need this for `f90-electric-insert' and other f90- callers.
+ (unless (and (boundp 'comment-auto-fill-only-comments)
+ comment-auto-fill-only-comments
+ (not (f90-in-comment)))
+ (while (> (current-column) fill-column)
+ (let ((pos-mark (point-marker)))
+ (move-to-column fill-column)
+ (or (f90-in-string) (f90-find-breakpoint))
+ (f90-break-line)
+ (goto-char pos-mark)
+ (set-marker pos-mark nil)))))
+
+(defun f90-join-lines (&optional arg)
+ "Join current line to previous, fix whitespace, continuation, comments.
+With optional argument ARG, join current line to following line.
+Like `join-line', but handles F90 syntax."
+ (interactive "*P")
+ (beginning-of-line)
+ (if arg (forward-line 1))
+ (when (eq (preceding-char) ?\n)
+ (skip-chars-forward " \t")
+ (if (looking-at "\&") (delete-char 1))
+ (beginning-of-line)
+ (delete-region (point) (1- (point)))
+ (skip-chars-backward " \t")
+ (and (eq (preceding-char) ?&) (delete-char -1))
+ (and (f90-in-comment)
+ (looking-at "[ \t]*!+")
+ (replace-match ""))
+ (or (f90-in-string)
+ (fixup-whitespace))))
+
+(defun f90-fill-region (beg-region end-region)
+ "Fill every line in region by forward parsing. Join lines if possible."
+ (interactive "*r")
+ (let ((end-region-mark (copy-marker end-region))
+ (go-on t)
+ f90-smart-end f90-auto-keyword-case auto-fill-function)
+ (goto-char beg-region)
+ (while go-on
+ ;; Join as much as possible.
+ (while (progn
+ (end-of-line)
+ (skip-chars-backward " \t")
+ (eq (preceding-char) ?&))
+ (f90-join-lines 'forward))
+ ;; Chop the line if necessary.
+ (while (> (save-excursion (end-of-line) (current-column))
+ fill-column)
+ (move-to-column fill-column)
+ (f90-find-breakpoint)
+ (f90-break-line 'no-update))
+ (setq go-on (and (< (point) end-region-mark)
+ (zerop (forward-line 1)))
+ f90-cache-position (point)))
+ (setq f90-cache-position nil)
+ (set-marker end-region-mark nil)
+ (if (fboundp 'zmacs-deactivate-region)
+ (zmacs-deactivate-region)
+ (deactivate-mark))))
+\f
+(defun f90-block-match (beg-block beg-name end-block end-name)
+ "Match end-struct with beg-struct and complete end-block if possible.
+BEG-BLOCK is the type of block as indicated at the start (e.g., do).
+BEG-NAME is the block start name (may be nil).
+END-BLOCK is the type of block as indicated at the end (may be nil).
+END-NAME is the block end name (may be nil).
+Leave point at the end of line."
+ ;; Hack to deal with the case when this is called from
+ ;; f90-indent-region on a program block without an explicit PROGRAM
+ ;; statement at the start. Should really be an error (?).
+ (or beg-block (setq beg-block "program"))
+ (search-forward "end" (line-end-position))
+ (catch 'no-match
+ (if (and end-block (f90-equal-symbols beg-block end-block))
+ (search-forward end-block)
+ (if end-block
+ (progn
+ (message "END %s does not match %s." end-block beg-block)
+ (end-of-line)
+ (throw 'no-match nil))
+ (message "Inserting %s." beg-block)
+ (insert (concat " " beg-block))))
+ (if (f90-equal-symbols beg-name end-name)
+ (and end-name (search-forward end-name))
+ (cond ((and beg-name (not end-name))
+ (message "Inserting %s." beg-name)
+ (insert (concat " " beg-name)))
+ ((and beg-name end-name)
+ (message "Replacing %s with %s." end-name beg-name)
+ (search-forward end-name)
+ (replace-match beg-name))
+ ((and (not beg-name) end-name)
+ (message "Deleting %s." end-name)
+ (search-forward end-name)
+ (replace-match ""))))
+ (or (looking-at "[ \t]*!") (delete-horizontal-space))))
+
+(defun f90-match-end ()
+ "From an end block statement, find the corresponding block and name."
+ (interactive)
+ (let ((count 1)
+ (top-of-window (window-start))
+ (end-point (point))
+ (case-fold-search t)
+ matching-beg beg-name end-name beg-block end-block end-struct)
+ (when (save-excursion (beginning-of-line) (skip-chars-forward " \t0-9")
+ (setq end-struct (f90-looking-at-program-block-end)))
+ (setq end-block (car end-struct)
+ end-name (car (cdr end-struct)))
+ (save-excursion
+ (beginning-of-line)
+ (while (and (> count 0)
+ (not (= (line-beginning-position) (point-min))))
+ (re-search-backward f90-blocks-re nil 'move)
+ (beginning-of-line)
+ ;; GM not a line number if continued line.
+;;; (skip-chars-forward " \t")
+;;; (skip-chars-forward "0-9")
+ (skip-chars-forward " \t0-9")
+ (cond ((or (f90-in-string) (f90-in-comment)))
+ ((setq matching-beg
+ (or
+ (f90-looking-at-do)
+ (f90-looking-at-if-then)
+ (f90-looking-at-where-or-forall)
+ (f90-looking-at-select-case)
+ (f90-looking-at-type-like)
+ (f90-looking-at-program-block-start)
+ ;; Interpret a single END without a block
+ ;; start to be the END of a program block
+ ;; without an initial PROGRAM line.
+ (if (= (line-beginning-position) (point-min))
+ '("program" nil))))
+ (setq count (1- count)))
+ ((looking-at (concat "end[ \t]*" f90-blocks-re))
+ (setq count (1+ count)))))
+ (if (> count 0)
+ (message "No matching beginning.")
+ (f90-update-line)
+ (if (eq f90-smart-end 'blink)
+ (if (< (point) top-of-window)
+ (message "Matches %s: %s"
+ (what-line)
+ (buffer-substring
+ (line-beginning-position)
+ (line-end-position)))
+ (sit-for 1)))
+ (setq beg-block (car matching-beg)
+ beg-name (car (cdr matching-beg)))
+ (goto-char end-point)
+ (beginning-of-line)
+ (f90-block-match beg-block beg-name end-block end-name))))))
+
+(defun f90-insert-end ()
+ "Insert a complete end statement matching beginning of present block."
+ (interactive "*")
+ (let ((f90-smart-end (or f90-smart-end 'blink)))
+ (insert "end")
+ (f90-indent-new-line)))
+\f
+;; Abbrevs and keywords.
+
+(defun f90-abbrev-start ()
+ "Typing `\\[help-command] or `? lists all the F90 abbrevs.
+Any other key combination is executed normally."
+ (interactive "*")
+ (insert last-command-char)
+ (let (char event)
+ (if (fboundp 'next-command-event) ; XEmacs
+ (setq event (next-command-event)
+ char (and (fboundp 'event-to-character)
+ (event-to-character event)))
+ (setq event (read-event)
+ char event))
+ ;; Insert char if not equal to `?', or if abbrev-mode is off.
+ (if (and abbrev-mode (or (eq char ??) (eq char help-char)))
+ (f90-abbrev-help)
+ (setq unread-command-events (list event)))))
+
+(defun f90-abbrev-help ()
+ "List the currently defined abbrevs in F90 mode."
+ (interactive)
+ (message "Listing abbrev table...")
+ (display-buffer (f90-prepare-abbrev-list-buffer))
+ (message "Listing abbrev table...done"))
+
+(defun f90-prepare-abbrev-list-buffer ()
+ "Create a buffer listing the F90 mode abbreviations."
+ (save-excursion
+ (set-buffer (get-buffer-create "*Abbrevs*"))
+ (erase-buffer)
+ (insert-abbrev-table-description 'f90-mode-abbrev-table t)
+ (goto-char (point-min))
+ (set-buffer-modified-p nil)
+ (edit-abbrevs-mode))
+ (get-buffer-create "*Abbrevs*"))
+
+(defun f90-upcase-keywords ()
+ "Upcase all F90 keywords in the buffer."
+ (interactive "*")
+ (f90-change-keywords 'upcase-word))
+
+(defun f90-capitalize-keywords ()
+ "Capitalize all F90 keywords in the buffer."
+ (interactive "*")
+ (f90-change-keywords 'capitalize-word))
+
+(defun f90-downcase-keywords ()
+ "Downcase all F90 keywords in the buffer."
+ (interactive "*")
+ (f90-change-keywords 'downcase-word))
+
+(defun f90-upcase-region-keywords (beg end)
+ "Upcase all F90 keywords in the region."
+ (interactive "*r")
+ (f90-change-keywords 'upcase-word beg end))
+
+(defun f90-capitalize-region-keywords (beg end)
+ "Capitalize all F90 keywords in the region."
+ (interactive "*r")
+ (f90-change-keywords 'capitalize-word beg end))
+
+(defun f90-downcase-region-keywords (beg end)
+ "Downcase all F90 keywords in the region."
+ (interactive "*r")
+ (f90-change-keywords 'downcase-word beg end))
+
+;; Change the keywords according to argument.
+(defun f90-change-keywords (change-word &optional beg end)
+ "Change the case of F90 keywords in the region (if specified) or buffer.
+CHANGE-WORD should be one of 'upcase-word, 'downcase-word, 'capitalize-word."
+ (save-excursion
+ (setq beg (or beg (point-min))
+ end (or end (point-max)))
+ (let ((keyword-re
+ (concat "\\("
+ f90-keywords-re "\\|" f90-procedures-re "\\|"
+ f90-hpf-keywords-re "\\|" f90-operators-re "\\)"))
+ (ref-point (point-min))
+ (modified (buffer-modified-p))
+ state saveword back-point)
+ (goto-char beg)
+ (unwind-protect
+ (while (re-search-forward keyword-re end t)
+ (unless (progn
+ (setq state (parse-partial-sexp ref-point (point)))
+ (or (nth 3 state) (nth 4 state)
+ ;; GM f90-directive-comment-re?
+ (save-excursion ; check for cpp directive
+ (beginning-of-line)
+ (skip-chars-forward " \t0-9")
+ (looking-at "#"))))
+ (setq ref-point (point)
+ back-point (save-excursion (backward-word 1) (point))
+ saveword (buffer-substring back-point ref-point))
+ (funcall change-word -1)
+ (or (string= saveword (buffer-substring back-point ref-point))
+ (setq modified t))))
+ (or modified (set-buffer-modified-p nil))))))
+
+
+(defun f90-current-defun ()
+ "Function to use for `add-log-current-defun-function' in F90 mode."
+ (save-excursion
+ (nth 1 (f90-beginning-of-subprogram))))
+
+
+(defun f90-backslash-not-special (&optional all)
+ "Make the backslash character (\\) be non-special in the current buffer.
+With optional argument ALL, change the default for all present
+and future F90 buffers. F90 mode normally treats backslash as an
+escape character."
+ (or (eq major-mode 'f90-mode)
+ (error "This function should only be used in F90 buffers"))
+ (when (equal (char-syntax ?\\ ) ?\\ )
+ (or all (set-syntax-table (copy-syntax-table (syntax-table))))
+ (modify-syntax-entry ?\\ ".")))
+
+
+(provide 'f90)
+
+;;; arch-tag: fceac97c-c147-44bd-aec0-172d4b560ef8
+;;; f90.el ends here
HCoop / bpt / emacs.git / blobdiff