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;;; f90.el --- Fortran-90 mode (free format) ;; Copyright (C) 1995, 1996 Free Software Foundation, Inc. ;; Author: Torbj\"orn Einarsson <T.Einarsson@clab.ericsson.se> ;; Created: Apr. 18, 1996 ;; Keywords: fortran, f90, languages ;; This file is part of XEmacs. ;; XEmacs is free software; you can redistribute it and/or modify it ;; under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 2 of the License, or ;; (at your option) any later version. ;; XEmacs 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 XEmacs; if not, write to the Free Software Foundation, ;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ;;; Synched up with: FSF 19.34. ;;; 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$" . f90-mode)))) ;; Once you have entered f90-mode, you may get more info by using ;; the command describe-mode (C-h m). For online help describing various ;; functions use C-h f <Name of function you want described> ;; To customize the f90-mode for your taste, use, for example: ;; (you don't have to specify values for all the parameters below) ;;(setq f90-mode-hook ;; '(lambda () (setq f90-do-indent 3 ;; f90-if-indent 3 ;; f90-type-indent 3 ;; f90-program-indent 2 ;; f90-continuation-indent 5 ;; f90-comment-region "!!$" ;; 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 ;; ) ;; ;;The rest is not default. ;; (abbrev-mode 1) ; turn on abbreviation mode ;; (f90-auto-fill-mode 1) ; turn on auto-filling ;; (turn-on-font-lock) ; for highlighting ;; (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 f90-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-auto-fill-mode ;; 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 ;; 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: (eval-when-compile (defvar deactivate-mark) (defvar mark-active)) (defconst bug-f90-mode "T.Einarsson@clab.ericsson.se" "Address of mailing list for F90 mode bugs.") ;; User options (defgroup f90 nil "Fortran-90 mode" :group 'fortran) (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 'regexp :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 paranthesis 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 (if (string-match "XEmacs" emacs-version) (list ; XEmacs '("\\<\$end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\$\\)\\>" 1 font-lock-keyword-face) '("\\<\$end[ \t]*\\(program\\|module\\|function\\|subroutine\\|type\$\\)\\>[ \t]*\$\\sw+\$" 3 font-lock-function-name-face) '("\\<\$program\\|call\\|module\\|subroutine\\|function\\|use\$\\>" 1 font-lock-keyword-face) '("\\<\$program\\|call\\|module\\|subroutine\\|function\\|use\$\\>[ \t]*\$\\sw+\$" 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) '("\\<\$type\$[ \t]*\$,.*::[ \t]*\\|[ \t]+\$\$\\sw+\$" 3 font-lock-function-name-face) "\\<\$\\(end[ \t]*\$?\$interface\\|block[ \t]*data\$\\|contains\\)\\>") (list ; Emacs '("\\<\$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 (if (string-match "XEmacs" emacs-version) (list ; XEmacs ;; Variable declarations (avoid the real function call) '("^[ \t0-9]*\$real\\|integer\\|c\\(haracter\\|omplex\$\\|logical\\|type[ \t]*(\\sw+)\\)" 1 font-lock-type-face) '("^[ \t0-9]*\$real\\|integer\\|c\\(haracter\\|omplex\$\\|logical\\|type[ \t]*(\\sw+)\\)\$.*::\\|[ \t]*(.*)\$?\$.*\$" 4 font-lock-doc-string-face) ;; do, if and select constructs '("\\<\$end[ \t]*\\(do\\|if\\|select\$\\)\\>" 1 font-lock-keyword-face) '("\\<\$end[ \t]*\\(do\\|if\\|select\$\\)\\>\$[ \t]+\\(\\sw+\$\\)" 3 font-lock-doc-string-face) '("^[ \t0-9]*\$\\(\\sw+\$[ \t]*:[ \t]*\\)\$\\(if\\|do\\([ \t]*while\$?\\|select[ \t]*case\\)\\)\\>" 2 font-lock-doc-string-face) '("^[ \t0-9]*\$\\(\\sw+\$[ \t]*:[ \t]*\\)?\$\\(if\\|do\\([ \t]*while\$?\\|select[ \t]*case\\)\\)\\>" 3 font-lock-keyword-face) ;; implicit declaration '("\\<\$implicit\$[ \t]*\$real\\|integer\\|c\\(haracter\\|omplex\$\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" 1 font-lock-keyword-face) '("\\<\$implicit\$[ \t]*\$real\\|integer\\|c\\(haracter\\|omplex\$\\|logical\\|type[ \t]*(\\sw+)\\|none\\)\\>" 2 font-lock-type-face) '("\\<\$namelist\\|common\$[ \t]*\/\$\\sw+\$?\/" 1 font-lock-keyword-face) '("\\<\$namelist\\|common\$[ \t]*\/\$\\sw+\$\/" 2 font-lock-doc-string-face nil t) '("\\<\$where\\|forall\$[ \t]*(" . 1) "\\<e\$lse\\([ \t]*if\\|where\$?\\|nd[ \t]*\$where\\|forall\$\\)\\>" "\\<\$then\\|continue\\|format\\|include\\|stop\\|return\$\\>" '("\\<\$exit\\|cycle\$\\>" 1 font-lock-keyword-face) '("\\<\$exit\\|cycle\$[ \t]*\$\\sw+\$2\\>" 2 font-lock-doc-string-face) '("\\<\$case\$[ \t]*\$default\\|(\$" . 1) '("\\<\$do\\|go *to\$\\>[ \t]*\$[0-9]+\$" 1 font-lock-keyword-face) '("\\<\$do\\|go *to\$\\>[ \t]*\$[0-9]+\$" 2 font-lock-doc-string-face) '("^[ \t]*\$[0-9]+\$" 1 font-lock-doc-string-face t)) (list ; Emacs ;; Variable declarations (avoid the real function call) '("^[ \t0-9]*\$real\\|integer\\|c\\(haracter\\|omplex\$\\|logical\\|type[ \t]*(\\sw+)\\)\$.*::\\|[ \t]*(.*)\$?\$.*\$" (1 font-lock-type-face) (4 font-lock-variable-name-face)) ;; do, if and select constructs '("\\<\$end[ \t]*\\(do\\|if\\|select\$\\)\\>\$[ \t]+\\(\\sw+\$\\)?" (1 font-lock-keyword-face) (3 font-lock-reference-face nil t)) '("^[ \t0-9]*\$\\(\\sw+\$[ \t]*:[ \t]*\\)?\$\\(if\\|do\\([ \t]*while\$?\\|select[ \t]*case\\)\\)\\>" (2 font-lock-reference-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-reference-face nil t)) '("\\<\$where\\|forall\$[ \t]*(" . 1) "\\<e\$lse\\([ \t]*if\\|where\$?\\|nd[ \t]*\$where\\|forall\$\\)\\>" "\\<\$then\\|continue\\|format\\|include\\|stop\\|return\$\\>" '("\\<\$exit\\|cycle\$[ \t]*\$\\sw+\$?\\>" (1 font-lock-keyword-face) (2 font-lock-reference-face nil t)) '("\\<\$case\$[ \t]*\$default\\|(\$" . 1) '("\\<\$do\\|go *to\$\\>[ \t]*\$[0-9]+\$" (1 font-lock-keyword-face) (2 font-lock-reference-face)) '("^[ \t]*\$[0-9]+\$" (1 font-lock-reference-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 (if (string-match "XEmacs" emacs-version) (append (list f90-procedures-re) '(1 font-lock-keyword-face t)) (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 ?\' "\"" 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) (modify-syntax-entry ?. "." f90-mode-syntax-table) (modify-syntax-entry ?% "." f90-mode-syntax-table) ; not in f77 (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)) ;; 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 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" f90-auto-fill-mode t]) "XEmacs menu for F90 mode.") ;; Emacs (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 abbrev-mode] '("Toggle abbrev-mode" . abbrev-mode)) (define-key f90-mode-map [menu-bar f90 f90-auto-fill-mode] '("Toggle auto-fill" . f90-auto-fill-mode)) (define-key f90-mode-map [menu-bar f90 f90-downcase-region-keywords] '("Downcase Keywords (region)" . f90-downcase-region-keywords)) (define-key f90-mode-map [menu-bar f90 f90-downcase-keywords] '("Downcase Keywords (buffer)" . f90-downcase-keywords)) (define-key f90-mode-map [menu-bar f90 f90-capitalize-keywords] '("Capitalize Keywords (region)" . f90-capitalize-region-keywords)) (define-key f90-mode-map [menu-bar f90 f90-capitalize-region-keywords] '("Capitalize Keywords (buffer)" . f90-capitalize-keywords)) (define-key f90-mode-map [menu-bar f90 f90-upcase-region-keywords] '("Upcase Keywords (region)" . f90-upcase-region-keywords)) (define-key f90-mode-map [menu-bar f90 f90-upcase-keywords] '("Upcase Keywords (buffer)" . f90-upcase-keywords)) (define-key f90-mode-map [menu-bar f90 f90-insert-end] '("Insert 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 f90-fill-region] '("Fill Region" . f90-fill-region)) (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)) (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\$[ \t]*\$,.*::[ \t]*\\|[ \t]+\$\$\\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) ;; Imenu support (defvar f90-imenu-generic-expression (cons (concat "^[ \t0-9]*\$" "program[ \t]+\\(\\sw+\$\\|" "module[ \t]+\$\\sw+\$[ \t]*\$!\\|$\$\\|" "\$pure\\|recursive\\|extrinsic([^)]+)\$?[ \t]*" "subroutine[ \t]+\$\\sw+\$\\|" ; avoid end function, but allow for most other things "\$[^!]*\\([^e!].[^ \t!]\\|.[^n!][^ \t!]\\|..[^d \t!]\$" "\\|[^!]?[^!]?\\)[ \t]*function[ \t]+\$\\sw+\$" "\\)") (list 2 3 6 9)) "imenu generic expression for F90 mode.") ;; 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)) ())) ;; 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) (define-abbrev f90-mode-abbrev-table "`ab" "allocatable" nil) (define-abbrev f90-mode-abbrev-table "`as" "assignment" nil) (define-abbrev f90-mode-abbrev-table "`ba" "backspace" nil) (define-abbrev f90-mode-abbrev-table "`bd" "block data" nil) (define-abbrev f90-mode-abbrev-table "`c" "character" nil) (define-abbrev f90-mode-abbrev-table "`cl" "close" nil) (define-abbrev f90-mode-abbrev-table "`cm" "common" nil) (define-abbrev f90-mode-abbrev-table "`cx" "complex" nil) (define-abbrev f90-mode-abbrev-table "`cn" "contains" nil) (define-abbrev f90-mode-abbrev-table "`cy" "cycle" nil) (define-abbrev f90-mode-abbrev-table "`de" "deallocate" nil) (define-abbrev f90-mode-abbrev-table "`df" "define" nil) (define-abbrev f90-mode-abbrev-table "`di" "dimension" nil) (define-abbrev f90-mode-abbrev-table "`dw" "do while" nil) (define-abbrev f90-mode-abbrev-table "`el" "else" nil) (define-abbrev f90-mode-abbrev-table "`eli" "else if" nil) (define-abbrev f90-mode-abbrev-table "`elw" "elsewhere" nil) (define-abbrev f90-mode-abbrev-table "`eq" "equivalence" nil) (define-abbrev f90-mode-abbrev-table "`ex" "external" nil) (define-abbrev f90-mode-abbrev-table "`ey" "entry" nil) (define-abbrev f90-mode-abbrev-table "`fl" "forall" nil) (define-abbrev f90-mode-abbrev-table "`fo" "format" nil) (define-abbrev f90-mode-abbrev-table "`fu" "function" nil) (define-abbrev f90-mode-abbrev-table "`fa" ".false." nil) (define-abbrev f90-mode-abbrev-table "`im" "implicit none" nil) (define-abbrev f90-mode-abbrev-table "`in " "include" nil) (define-abbrev f90-mode-abbrev-table "`i" "integer" nil) (define-abbrev f90-mode-abbrev-table "`it" "intent" nil) (define-abbrev f90-mode-abbrev-table "`if" "interface" nil) (define-abbrev f90-mode-abbrev-table "`lo" "logical" nil) (define-abbrev f90-mode-abbrev-table "`mo" "module" nil) (define-abbrev f90-mode-abbrev-table "`na" "namelist" nil) (define-abbrev f90-mode-abbrev-table "`nu" "nullify" nil) (define-abbrev f90-mode-abbrev-table "`op" "optional" nil) (define-abbrev f90-mode-abbrev-table "`pa" "parameter" nil) (define-abbrev f90-mode-abbrev-table "`po" "pointer" nil) (define-abbrev f90-mode-abbrev-table "`pr" "print" nil) (define-abbrev f90-mode-abbrev-table "`pi" "private" nil) (define-abbrev f90-mode-abbrev-table "`pm" "program" nil) (define-abbrev f90-mode-abbrev-table "`pu" "public" nil) (define-abbrev f90-mode-abbrev-table "`r" "real" nil) (define-abbrev f90-mode-abbrev-table "`rc" "recursive" nil) (define-abbrev f90-mode-abbrev-table "`rt" "return" nil) (define-abbrev f90-mode-abbrev-table "`rw" "rewind" nil) (define-abbrev f90-mode-abbrev-table "`se" "select" nil) (define-abbrev f90-mode-abbrev-table "`sq" "sequence" nil) (define-abbrev f90-mode-abbrev-table "`su" "subroutine" nil) (define-abbrev f90-mode-abbrev-table "`ta" "target" nil) (define-abbrev f90-mode-abbrev-table "`tr" ".true." nil) (define-abbrev f90-mode-abbrev-table "`t" "type" nil) (define-abbrev f90-mode-abbrev-table "`wh" "where" nil) (define-abbrev f90-mode-abbrev-table "`wr" "write" nil) (setq abbrevs-changed ac))) ;;;###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) (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. (make-local-variable 'imenu-generic-expression) (setq imenu-generic-expression f90-imenu-generic-expression) (run-hooks 'f90-mode-hook) (if f90-startup-message (message "Emacs F90 mode; please report bugs to %s" bug-f90-mode)) (setq f90-startup-message nil)) ;; 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))) (goto-char (scan-lists (point) 1 0)) (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 nil) if where/forall...end starts after point." (save-excursion (let (command) (if (looking-at "\$where\\|forall\$[ \t]*(") (progn (setq command (list (f90-match-piece 1) nil)) (goto-char (scan-lists (point) 1 0)) (skip-chars-forward " \t") (if (looking-at "\$!\\|$\$") command)))))) (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 3))) ((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))) ((looking-at (concat "\$pure\\|recursive\\|extrinsic([^)]+)\$?[ \t]*" "\$subroutine\$[ \t]+\$\\sw+\$")) (list (f90-match-piece 2) (f90-match-piece 3))) ((and (not (looking-at "end[ \t]*function")) (looking-at "[^!\"\&\\n]*\$function\$[ \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) ((looking-at f90-indented-comment-re) (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\\|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)))))) (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)) ;; 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 (and auto-fill-function (> (save-excursion (end-of-line) (current-column)) fill-column)) (save-excursion (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) (insert "&")) ((f90-in-comment) (delete-horizontal-space) (setq ctype (f90-get-present-comment-type)) (newline) (insert (concat ctype " "))) (t (delete-horizontal-space) (insert "&") (if (not no-update) (f90-update-line)) (newline) (if f90-beginning-ampersand (insert "& "))))) (if (not no-update) (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-auto-fill-mode (arg) "Toggle f90-auto-fill mode. With ARG, turn `f90-auto-fill' mode on iff ARG is positive. In `f90-auto-fill' mode, inserting a space at a column beyond `fill-column' automatically breaks the line at a previous space." (interactive "P") (prog1 (setq auto-fill-function (if (if (null arg) (not auto-fill-function) (> (prefix-numeric-value arg) 0)) 'f90-do-auto-fill)) (force-mode-line-update))) (defun f90-do-auto-fill () "Break line if non-white characters beyond fill-column." (interactive) ;; Break the line before or after the last delimiter (non-word char). ;; Will not break **, //, or => (specified by f90-no-break-re). ;; Start by checking that line is longer than fill-column. (if (> (save-excursion (end-of-line) (current-column)) fill-column) (progn (move-to-column fill-column) (if (and (looking-at "[ \t]*$") (not (f90-in-string))) (delete-horizontal-space) (f90-find-breakpoint) (f90-break-line) (end-of-line))))) (defun f90-join-lines () "Join present line with next line, if this line ends with \&." (interactive) (let (pos (oldpos (point))) (end-of-line) (skip-chars-backward " \t") (cond ((= (preceding-char) ?&) (delete-char -1) (setq pos (point)) (forward-line 1) (skip-chars-forward " \t") (if (looking-at "\&") (delete-char 1)) (delete-region pos (point)) (if (not (f90-in-string)) (progn (delete-horizontal-space) (insert " "))) (if (and auto-fill-function (> (save-excursion (end-of-line) (current-column)) fill-column)) (f90-do-auto-fill)) (goto-char oldpos) t)))) (defun f90-fill-region (beg-region end-region) "Fill every line in region by forward parsing. Join lines if possible." (interactive "*r") (let ((end-region-mark (make-marker)) (f90-smart-end nil) (f90-auto-keyword-case nil) indent (go-on t) (af-function auto-fill-function) (auto-fill-function nil)) (set-marker end-region-mark end-region) (goto-char beg-region) (while go-on ;; join as much as possible (while (f90-join-lines)); (setq indent (+ (f90-current-indentation) f90-continuation-indent)) ;; chop the line if necessary (while (> (save-excursion (end-of-line) (current-column)) fill-column) (move-to-column fill-column) (if (and (looking-at "[ \t]*$") (not (f90-in-string))) (delete-horizontal-space) (f90-find-breakpoint) (f90-break-line 'no-update) (f90-indent-to indent 'no-line-no))) (setq go-on (and (< (point) (marker-position end-region-mark)) (zerop (forward-line 1)))) (setq f90-cache-position (point))) (setq auto-fill-function af-function) (setq f90-cache-position nil) (if (string-match "XEmacs" emacs-version) (zmacs-deactivate-region) (deactivate-mark)))) (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 %d: %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))) ;; 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 (= 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)))))) (provide 'f90) ;;; f90.el ends here