(defvar comment-auto-fill-only-comments)
(defvar font-lock-keywords)
(defgroup f90 nil
"Major mode for editing free format Fortran 90,95 code."
:link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
: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)
(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"
"elemental" "pure") 'words)
"Regexp used by the function `f90-change-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"
"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"
"random_number" "random_seed" "range" "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"
"null" "cpu_time") t)
"[ \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
'("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"
"align" "distribute" "dynamic" "independent" "inherit" "processors"
"realign" "redistribute" "template"
"block" "cyclic" "extrinsic" "new" "onto" "pure" "with") 'words)
"Regexp for all HPF keywords, procedures and directives.")
(defvar f90-font-lock-keywords-1
(list
'("\\<\\(module[ \t]*procedure\\)\\>" (1 font-lock-keyword-face))
'("\\<\\(\\(?:end[ \t]*\\)?type\\)\\>\\([^()\n]*::\\)?[ \t]*\\(\\sw+\\)"
(1 font-lock-keyword-face) (3 font-lock-function-name-face))
'("\\<\\(\\(?: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
'("^[ \t0-9]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\\|\
logical\\|double[ \t]*precision\\|*type[ \t]*(\\sw+)\\)\
\\(.*::\\|[ \t]*(.*)\\)?\\([^&!\n]*\\)"
(1 font-lock-type-face t) (4 font-lock-variable-name-face t))
'("\\<\\(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\\)[ \t]*\\(real\\|integer\\|c\\(haracter\\|omplex\\)\
\\|logical\\|double[ \t]*precision\\|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))
'("^[ \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\\>" ))
"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) (modify-syntax-entry ?\n ">" table) (modify-syntax-entry ?_ "w" table) (modify-syntax-entry ?\' "\"" table) (modify-syntax-entry ?\" "\"" table) (modify-syntax-entry ?\` "w" table) (modify-syntax-entry ?\r " " table) (modify-syntax-entry ?+ "." table) (modify-syntax-entry ?- "." table)
(modify-syntax-entry ?= "." table)
(modify-syntax-entry ?* "." table)
(modify-syntax-entry ?/ "." table)
(modify-syntax-entry ?\\ "\\" table) 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) (define-key map "\r" 'newline)
(define-key map "\C-c\r" '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))
(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)
(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'.")
(defconst f90-start-block-re
(concat
"^[ \t0-9]*" "\\(\\("
"\\(\\sw+[ \t]*:[ \t]*\\)?" "\\(do\\|select[ \t]*case\\|"
"if[ \t]*(\\(.*\\|"
".*\n\\([^if]*\\([^i].\\|.[^f]\\|.\\>\\)\\)\\)\\<then\\|"
"\\(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'.")
(add-to-list 'hs-special-modes-alist
`(f90-mode ,f90-start-block-re ,f90-end-block-re
"!" f90-end-of-block nil))
(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]*"
"\\("
"[^!\"\&\n]*\\("
not-e good-char good-char "\\|"
good-char not-n good-char "\\|"
good-char good-char not-d "\\)"
"\\|"
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))))
(defvar f90-mode-abbrev-table
(progn
(define-abbrev-table 'f90-mode-abbrev-table nil)
f90-mode-abbrev-table)
"Abbrev table for F90 mode.")
(let (abbrevs-changed)
(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" )
("`dp" "double precision")
("`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" ))))
(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).
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) (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))
(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) ?&)))
(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)
(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."
(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."
(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)))))
(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)
(save-excursion
(skip-chars-backward " \t")
(bolp)))
(f90-calculate-indent))
(t (save-excursion
(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))))
(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) (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))
(setq icol (if (save-excursion
(when (looking-at "[ \t]*\\([!#]\\|$\\)")
(f90-next-statement))
(skip-chars-forward " \t0-9")
(f90-looking-at-program-block-start))
0
f90-program-indent))
(setq cont (f90-present-statement-cont))
(if (eq cont 'end)
(while (not (eq 'begin (f90-present-statement-cont)))
(f90-previous-statement)))
(cond ((eq cont 'begin)
(setq icol (+ (f90-current-indentation)
f90-continuation-indent)))
((eq cont 'middle) (setq icol (current-indentation)))
(t (setq icol (f90-current-indentation))
(skip-chars-forward " \t")
(if (looking-at "[0-9]")
(setq icol (f90-get-correct-indent))
(cond ((or (f90-looking-at-if-then)
(f90-looking-at-where-or-forall)
(f90-looking-at-select-case)
(looking-at f90-else-like-re))
(setq icol (+ icol f90-if-indent)))
((f90-looking-at-do)
(setq icol (+ icol f90-do-indent)))
((f90-looking-at-type-like)
(setq icol (+ icol f90-type-indent)))
((or (f90-looking-at-program-block-start)
(looking-at "contains[ \t]*\\($\\|!\\)"))
(setq icol (+ icol f90-program-indent)))))
(goto-char pnt)
(beginning-of-line)
(cond ((looking-at "[ \t]*$"))
((looking-at "[ \t]*#") (setq icol 0))
(t
(skip-chars-forward " \t0-9")
(cond ((or (looking-at f90-else-like-re)
(looking-at f90-end-if-re))
(setq icol (- icol f90-if-indent)))
((looking-at "end[ \t]*do\\>")
(setq icol (- icol f90-do-indent)))
((looking-at f90-end-type-re)
(setq icol (- icol f90-type-indent)))
((or (looking-at "contains[ \t]*\\(!\\|$\\)")
(f90-looking-at-program-block-end))
(setq icol (- icol f90-program-indent))))))
))))
icol))
(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
(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))
(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)) (and num (< num 0) (f90-beginning-of-block (- num)))
(let ((f90-smart-end (if f90-smart-end 'no-blink)) (case-fold-search t)
(count (or num 1))
start-list start-this start-type start-label end-type end-label)
(end-of-line) (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) 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))
(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"))
(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) (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))
(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))))))
(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) (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))
(and (< (point) pos)
(goto-char pos))
(if auto-fill-function
(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) (f90-indent-line) (end-of-line)
(delete-horizontal-space) (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))
(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))
(case-fold-search t)
block-list ind-lev ind-curr ind-b cont struct beg-struct end-struct)
(goto-char beg-region)
(beginning-of-line)
(while (and (looking-at "[ \t]*[0-9]*\\(!\\|#\\|[ \t]*$\\)")
(progn (f90-indent-line 'no-update)
(zerop (forward-line 1)))
(< (point) end-region-mark)))
(setq cont (f90-present-statement-cont))
(while (and (or (eq cont 'middle) (eq cont 'end))
(f90-previous-statement))
(setq cont (f90-present-statement-cont)))
(setq f90-cache-position (point))
(f90-indent-line 'no-update)
(setq ind-lev (f90-current-indentation)
ind-curr ind-lev)
(beginning-of-line)
(skip-chars-forward " \t0-9")
(setq struct nil
ind-b (cond ((setq struct (f90-looking-at-do)) f90-do-indent)
((or (setq struct (f90-looking-at-if-then))
(setq struct (f90-looking-at-select-case))
(setq struct (f90-looking-at-where-or-forall))
(looking-at f90-else-like-re))
f90-if-indent)
((setq struct (f90-looking-at-type-like))
f90-type-indent)
((or (setq struct (f90-looking-at-program-block-start))
(looking-at "contains[ \t]*\\($\\|!\\)"))
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))))
(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)))
(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)))))
(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) (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 "*")
(f90-update-line)
(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
(while (progn
(end-of-line)
(skip-chars-backward " \t")
(eq (preceding-char) ?&))
(f90-join-lines 'forward))
(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))))
(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."
(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)
(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)
(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 blink-matching-delay)))
(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)))
(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) (setq event (next-command-event)
char (and (fboundp 'event-to-character)
(event-to-character event)))
(setq event (read-event)
char event))
(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))
(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)
(save-excursion (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)