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565 lines
16 KiB
EmacsLisp
565 lines
16 KiB
EmacsLisp
;;; modula2.el --- Modula-2 editing support package
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;; Author: Michael Schmidt <michael@pbinfo.UUCP>
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;; Tom Perrine <Perrin@LOGICON.ARPA>
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;; Maintainer: FSF
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;; Keywords: languages
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;; The authors distributed this without a copyright notice
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;; back in 1988, so it is in the public domain. The original included
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;; the following credit:
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;; Author Mick Jordan
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;; amended Peter Robinson
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;;; Commentary:
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;; A major mode for editing Modula-2 code. It provides convenient abbrevs
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;; for Modula-2 keywords, knows about the standard layout rules, and supports
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;; a native compile command.
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;;; Code:
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(defgroup modula2 nil
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"Major mode for editing Modula-2 code."
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:prefix "m2-"
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:group 'languages)
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;;; Added by Tom Perrine (TEP)
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(defvar m2-mode-syntax-table nil
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"Syntax table in use in Modula-2 buffers.")
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(defcustom m2-compile-command "m2c"
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"Command to compile Modula-2 programs."
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:type 'string
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:group 'modula2)
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(defcustom m2-link-command "m2l"
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"Command to link Modula-2 programs."
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:type 'string
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:group 'modula2)
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(defcustom m2-link-name nil
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"Name of the Modula-2 executable."
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:type '(choice (const nil) string)
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:group 'modula2)
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(defcustom m2-end-comment-column 75
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"*Column for aligning the end of a comment, in Modula-2."
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:type 'integer
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:group 'modula2)
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(if m2-mode-syntax-table
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()
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?\\ "\\" table)
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(modify-syntax-entry ?\( ". 1" table)
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(modify-syntax-entry ?\) ". 4" table)
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(modify-syntax-entry ?* ". 23" table)
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(modify-syntax-entry ?+ "." table)
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(modify-syntax-entry ?- "." table)
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(modify-syntax-entry ?= "." table)
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(modify-syntax-entry ?% "." table)
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(modify-syntax-entry ?< "." table)
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(modify-syntax-entry ?> "." table)
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(modify-syntax-entry ?\' "\"" table)
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(setq m2-mode-syntax-table table)))
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;;; Added by TEP
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(defvar m2-mode-map nil
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"Keymap used in Modula-2 mode.")
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(if m2-mode-map ()
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(let ((map (make-sparse-keymap)))
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(define-key map "\^i" 'm2-tab)
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(define-key map "\C-cb" 'm2-begin)
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(define-key map "\C-cc" 'm2-case)
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(define-key map "\C-cd" 'm2-definition)
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(define-key map "\C-ce" 'm2-else)
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(define-key map "\C-cf" 'm2-for)
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(define-key map "\C-ch" 'm2-header)
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(define-key map "\C-ci" 'm2-if)
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(define-key map "\C-cm" 'm2-module)
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(define-key map "\C-cl" 'm2-loop)
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(define-key map "\C-co" 'm2-or)
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(define-key map "\C-cp" 'm2-procedure)
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(define-key map "\C-c\C-w" 'm2-with)
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(define-key map "\C-cr" 'm2-record)
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(define-key map "\C-cs" 'm2-stdio)
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(define-key map "\C-ct" 'm2-type)
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(define-key map "\C-cu" 'm2-until)
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(define-key map "\C-cv" 'm2-var)
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(define-key map "\C-cw" 'm2-while)
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(define-key map "\C-cx" 'm2-export)
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(define-key map "\C-cy" 'm2-import)
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(define-key map "\C-c{" 'm2-begin-comment)
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(define-key map "\C-c}" 'm2-end-comment)
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(define-key map "\C-j" 'm2-newline)
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(define-key map "\C-c\C-z" 'suspend-emacs)
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(define-key map "\C-c\C-v" 'm2-visit)
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(define-key map "\C-c\C-t" 'm2-toggle)
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(define-key map "\C-c\C-l" 'm2-link)
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(define-key map "\C-c\C-c" 'm2-compile)
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(setq m2-mode-map map)))
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(defcustom m2-indent 5
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"*This variable gives the indentation in Modula-2-Mode."
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:type 'integer
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:group 'modula2)
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;;;###autoload
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(defun modula-2-mode ()
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"This is a mode intended to support program development in Modula-2.
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All control constructs of Modula-2 can be reached by typing C-c
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followed by the first character of the construct.
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\\<m2-mode-map>
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\\[m2-begin] begin \\[m2-case] case
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\\[m2-definition] definition \\[m2-else] else
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\\[m2-for] for \\[m2-header] header
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\\[m2-if] if \\[m2-module] module
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\\[m2-loop] loop \\[m2-or] or
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\\[m2-procedure] procedure Control-c Control-w with
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\\[m2-record] record \\[m2-stdio] stdio
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\\[m2-type] type \\[m2-until] until
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\\[m2-var] var \\[m2-while] while
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\\[m2-export] export \\[m2-import] import
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\\[m2-begin-comment] begin-comment \\[m2-end-comment] end-comment
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\\[suspend-emacs] suspend Emacs \\[m2-toggle] toggle
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\\[m2-compile] compile \\[m2-next-error] next-error
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\\[m2-link] link
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`m2-indent' controls the number of spaces for each indentation.
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`m2-compile-command' holds the command to compile a Modula-2 program.
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`m2-link-command' holds the command to link a Modula-2 program."
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(interactive)
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(kill-all-local-variables)
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(use-local-map m2-mode-map)
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(setq major-mode 'modula-2-mode)
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(setq mode-name "Modula-2")
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(make-local-variable 'comment-column)
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(setq comment-column 41)
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(make-local-variable 'm2-end-comment-column)
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(set-syntax-table m2-mode-syntax-table)
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(make-local-variable 'paragraph-start)
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(setq paragraph-start (concat "$\\|" page-delimiter))
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(make-local-variable 'paragraph-separate)
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(setq paragraph-separate paragraph-start)
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(make-local-variable 'paragraph-ignore-fill-prefix)
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(setq paragraph-ignore-fill-prefix t)
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; (make-local-variable 'indent-line-function)
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; (setq indent-line-function 'c-indent-line)
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(make-local-variable 'require-final-newline)
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(setq require-final-newline t)
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(make-local-variable 'comment-start)
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(setq comment-start "(* ")
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(make-local-variable 'comment-end)
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(setq comment-end " *)")
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(make-local-variable 'comment-column)
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(setq comment-column 41)
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(make-local-variable 'comment-start-skip)
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(setq comment-start-skip "/\\*+ *")
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(make-local-variable 'comment-indent-function)
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(setq comment-indent-function 'c-comment-indent)
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(make-local-variable 'parse-sexp-ignore-comments)
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(setq parse-sexp-ignore-comments t)
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(make-local-variable 'font-lock-defaults)
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(setq font-lock-defaults
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'((m3-font-lock-keywords
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m3-font-lock-keywords-1 m3-font-lock-keywords-2)
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nil nil ((?_ . "w") (?. . "w") (?< . ". 1") (?> . ". 4")) nil
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;; Obsoleted by Emacs 19.35 parse-partial-sexp's COMMENTSTOP.
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;(font-lock-comment-start-regexp . "(\\*")
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))
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(run-hooks 'm2-mode-hook))
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;; Regexps written with help from Ron Forrester <ron@orcad.com>
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;; and Spencer Allain <sallain@teknowledge.com>.
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(defconst m3-font-lock-keywords-1
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'(
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;;
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;; Module definitions.
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("\\<\\(INTERFACE\\|MODULE\\|PROCEDURE\\)\\>[ \t]*\\(\\sw+\\)?"
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(1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
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;;
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;; Import directives.
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("\\<\\(EXPORTS\\|FROM\\|IMPORT\\)\\>"
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(1 font-lock-keyword-face)
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(font-lock-match-c-style-declaration-item-and-skip-to-next
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nil (goto-char (match-end 0))
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(1 font-lock-constant-face)))
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;;
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;; Pragmas as warnings.
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;; Spencer Allain <sallain@teknowledge.com> says do them as comments...
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;; ("<\\*.*\\*>" . font-lock-warning-face)
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;; ... but instead we fontify the first word.
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("<\\*[ \t]*\\(\\sw+\\)" 1 font-lock-warning-face prepend)
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)
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"Subdued level highlighting for Modula-3 modes.")
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(defconst m3-font-lock-keywords-2
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(append m3-font-lock-keywords-1
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(eval-when-compile
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(let ((m3-types
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(regexp-opt
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'("INTEGER" "BITS" "BOOLEAN" "CARDINAL" "CHAR" "FLOAT" "REAL"
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"LONGREAL" "REFANY" "ADDRESS" "ARRAY" "SET" "TEXT"
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"MUTEX" "ROOT" "EXTENDED")))
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(m3-keywords
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(regexp-opt
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'("AND" "ANY" "AS" "BEGIN" "BRANDED" "BY" "CASE" "CONST" "DIV"
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"DO" "ELSE" "ELSIF" "EVAL" "EXCEPT" "EXIT" "FINALLY"
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"FOR" "GENERIC" "IF" "IN" "LOCK" "LOOP" "METHODS" "MOD" "NOT"
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"OBJECT" "OF" "OR" "OVERRIDES" "READONLY" "RECORD" "REF"
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"REPEAT" "RETURN" "REVEAL" "THEN" "TO" "TRY"
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"TYPE" "TYPECASE" "UNSAFE" "UNTIL" "UNTRACED" "VAR" "VALUE"
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"WHILE" "WITH")))
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(m3-builtins
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(regexp-opt
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'("ABS" "ADR" "ADRSIZE" "BITSIZE" "BYTESIZE" "CEILING"
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"DEC" "DISPOSE" "FIRST" "FLOOR" "INC" "ISTYPE" "LAST"
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"LOOPHOLE" "MAX" "MIN" "NARROW" "NEW" "NUMBER" "ORD"
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"ROUND" "SUBARRAY" "TRUNC" "TYPECODE" "VAL")))
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)
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(list
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;;
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;; Keywords except those fontified elsewhere.
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(concat "\\<\\(" m3-keywords "\\)\\>")
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;;
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;; Builtins.
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(cons (concat "\\<\\(" m3-builtins "\\)\\>") 'font-lock-builtin-face)
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;;
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;; Type names.
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(cons (concat "\\<\\(" m3-types "\\)\\>") 'font-lock-type-face)
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;;
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;; Fontify tokens as function names.
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'("\\<\\(END\\|EXCEPTION\\|RAISES?\\)\\>[ \t{]*"
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(1 font-lock-keyword-face)
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(font-lock-match-c-style-declaration-item-and-skip-to-next
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nil (goto-char (match-end 0))
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(1 font-lock-function-name-face)))
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;;
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;; Fontify constants as references.
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'("\\<\\(FALSE\\|NIL\\|NULL\\|TRUE\\)\\>" . font-lock-constant-face)
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))))
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"Gaudy level highlighting for Modula-3 modes.")
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(defvar m3-font-lock-keywords m3-font-lock-keywords-1
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"Default expressions to highlight in Modula-3 modes.")
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;; We don't actually have different keywords for Modula-2. Volunteers?
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(defconst m2-font-lock-keywords-1 m3-font-lock-keywords-1
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"Subdued level highlighting for Modula-2 modes.")
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(defconst m2-font-lock-keywords-2 m3-font-lock-keywords-2
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"Gaudy level highlighting for Modula-2 modes.")
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(defvar m2-font-lock-keywords m2-font-lock-keywords-1
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"Default expressions to highlight in Modula-2 modes.")
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(defun m2-newline ()
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"Insert a newline and indent following line like previous line."
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(interactive)
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(let ((hpos (current-indentation)))
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(newline)
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(indent-to hpos)))
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(defun m2-tab ()
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"Indent to next tab stop."
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(interactive)
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(indent-to (* (1+ (/ (current-indentation) m2-indent)) m2-indent)))
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(defun m2-begin ()
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"Insert a BEGIN keyword and indent for the next line."
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(interactive)
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(insert "BEGIN")
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(m2-newline)
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(m2-tab))
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(defun m2-case ()
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"Build skeleton CASE statement, prompting for the <expression>."
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(interactive)
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(let ((name (read-string "Case-Expression: ")))
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(insert "CASE " name " OF")
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(m2-newline)
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(m2-newline)
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(insert "END (* case " name " *);"))
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(end-of-line 0)
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(m2-tab))
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(defun m2-definition ()
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"Build skeleton DEFINITION MODULE, prompting for the <module name>."
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(interactive)
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(insert "DEFINITION MODULE ")
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(let ((name (read-string "Name: ")))
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(insert name ";\n\n\n\nEND " name ".\n"))
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(previous-line 3))
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(defun m2-else ()
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"Insert ELSE keyword and indent for next line."
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(interactive)
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(m2-newline)
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(backward-delete-char-untabify m2-indent ())
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(insert "ELSE")
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(m2-newline)
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(m2-tab))
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(defun m2-for ()
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"Build skeleton FOR loop statement, prompting for the loop parameters."
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(interactive)
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(insert "FOR ")
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(let ((name (read-string "Loop Initialiser: ")) limit by)
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(insert name " TO ")
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(setq limit (read-string "Limit: "))
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(insert limit)
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(setq by (read-string "Step: "))
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(if (not (string-equal by ""))
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(insert " BY " by))
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(insert " DO")
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(m2-newline)
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(m2-newline)
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(insert "END (* for " name " to " limit " *);"))
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(end-of-line 0)
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(m2-tab))
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(defun m2-header ()
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"Insert a comment block containing the module title, author, etc."
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(interactive)
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(insert "(*\n Title: \t")
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(insert (read-string "Title: "))
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(insert "\n Created:\t")
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(insert (current-time-string))
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(insert "\n Author: \t")
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(insert (user-full-name))
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(insert (concat "\n\t\t<" (user-login-name) "@" (system-name) ">\n"))
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(insert "*)\n\n"))
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(defun m2-if ()
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"Insert skeleton IF statement, prompting for <boolean-expression>."
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(interactive)
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(insert "IF ")
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(let ((thecondition (read-string "<boolean-expression>: ")))
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(insert thecondition " THEN")
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(m2-newline)
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(m2-newline)
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(insert "END (* if " thecondition " *);"))
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(end-of-line 0)
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(m2-tab))
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(defun m2-loop ()
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"Build skeleton LOOP (with END)."
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(interactive)
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(insert "LOOP")
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(m2-newline)
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(m2-newline)
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(insert "END (* loop *);")
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(end-of-line 0)
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(m2-tab))
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(defun m2-module ()
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"Build skeleton IMPLEMENTATION MODULE, prompting for <module-name>."
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(interactive)
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(insert "IMPLEMENTATION MODULE ")
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(let ((name (read-string "Name: ")))
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(insert name ";\n\n\n\nEND " name ".\n")
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(previous-line 3)
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(m2-header)
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(m2-type)
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(newline)
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(m2-var)
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(newline)
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(m2-begin)
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(m2-begin-comment)
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(insert " Module " name " Initialisation Code "))
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(m2-end-comment)
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(newline)
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(m2-tab))
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(defun m2-or ()
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(interactive)
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(m2-newline)
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(backward-delete-char-untabify m2-indent)
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(insert "|")
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(m2-newline)
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(m2-tab))
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(defun m2-procedure ()
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(interactive)
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(insert "PROCEDURE ")
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(let ((name (read-string "Name: " ))
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args)
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(insert name " (")
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(insert (read-string "Arguments: ") ")")
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(setq args (read-string "Result Type: "))
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(if (not (string-equal args ""))
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(insert " : " args))
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(insert ";")
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(m2-newline)
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(insert "BEGIN")
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(m2-newline)
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(m2-newline)
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(insert "END ")
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(insert name)
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(insert ";")
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(end-of-line 0)
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(m2-tab)))
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(defun m2-with ()
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(interactive)
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(insert "WITH ")
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(let ((name (read-string "Record-Type: ")))
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(insert name)
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(insert " DO")
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(m2-newline)
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(m2-newline)
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(insert "END (* with " name " *);"))
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(end-of-line 0)
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(m2-tab))
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(defun m2-record ()
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(interactive)
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(insert "RECORD")
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(m2-newline)
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(m2-newline)
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(insert "END (* record *);")
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(end-of-line 0)
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(m2-tab))
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(defun m2-stdio ()
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(interactive)
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(insert "
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FROM TextIO IMPORT
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WriteCHAR, ReadCHAR, WriteINTEGER, ReadINTEGER,
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WriteCARDINAL, ReadCARDINAL, WriteBOOLEAN, ReadBOOLEAN,
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WriteREAL, ReadREAL, WriteBITSET, ReadBITSET,
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WriteBasedCARDINAL, ReadBasedCARDINAL, WriteChars, ReadChars,
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WriteString, ReadString, WhiteSpace, EndOfLine;
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FROM SysStreams IMPORT sysIn, sysOut, sysErr;
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"))
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(defun m2-type ()
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(interactive)
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(insert "TYPE")
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(m2-newline)
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(m2-tab))
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(defun m2-until ()
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(interactive)
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(insert "REPEAT")
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(m2-newline)
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(m2-newline)
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(insert "UNTIL ")
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(insert (read-string "<boolean-expression>: ") ";")
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(end-of-line 0)
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(m2-tab))
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(defun m2-var ()
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(interactive)
|
||
(m2-newline)
|
||
(insert "VAR")
|
||
(m2-newline)
|
||
(m2-tab))
|
||
|
||
(defun m2-while ()
|
||
(interactive)
|
||
(insert "WHILE ")
|
||
(let ((name (read-string "<boolean-expression>: ")))
|
||
(insert name " DO" )
|
||
(m2-newline)
|
||
(m2-newline)
|
||
(insert "END (* while " name " *);"))
|
||
(end-of-line 0)
|
||
(m2-tab))
|
||
|
||
(defun m2-export ()
|
||
(interactive)
|
||
(insert "EXPORT QUALIFIED "))
|
||
|
||
(defun m2-import ()
|
||
(interactive)
|
||
(insert "FROM ")
|
||
(insert (read-string "Module: "))
|
||
(insert " IMPORT "))
|
||
|
||
(defun m2-begin-comment ()
|
||
(interactive)
|
||
(if (not (bolp))
|
||
(indent-to comment-column 0))
|
||
(insert "(* "))
|
||
|
||
(defun m2-end-comment ()
|
||
(interactive)
|
||
(if (not (bolp))
|
||
(indent-to m2-end-comment-column))
|
||
(insert "*)"))
|
||
|
||
(defun m2-compile ()
|
||
(interactive)
|
||
(compile (concat m2-compile-command " " (buffer-name))))
|
||
|
||
(defun m2-link ()
|
||
(interactive)
|
||
(if m2-link-name
|
||
(compile (concat m2-link-command " " m2-link-name))
|
||
(compile (concat m2-link-command " "
|
||
(setq m2-link-name (read-string "Name of executable: "
|
||
(buffer-name)))))))
|
||
|
||
(defun m2-execute-monitor-command (command)
|
||
(let* ((shell shell-file-name)
|
||
(csh (equal (file-name-nondirectory shell) "csh")))
|
||
(call-process shell nil t t "-cf" (concat "exec " command))))
|
||
|
||
(defun m2-visit ()
|
||
(interactive)
|
||
(let ((deffile nil)
|
||
(modfile nil)
|
||
modulename)
|
||
(save-excursion
|
||
(setq modulename
|
||
(read-string "Module name: "))
|
||
(switch-to-buffer "*Command Execution*")
|
||
(m2-execute-monitor-command (concat "m2whereis " modulename))
|
||
(goto-char (point-min))
|
||
(condition-case ()
|
||
(progn (re-search-forward "\\(.*\\.def\\) *$")
|
||
(setq deffile (buffer-substring (match-beginning 1)
|
||
(match-end 1))))
|
||
(search-failed ()))
|
||
(condition-case ()
|
||
(progn (re-search-forward "\\(.*\\.mod\\) *$")
|
||
(setq modfile (buffer-substring (match-beginning 1)
|
||
(match-end 1))))
|
||
(search-failed ()))
|
||
(if (not (or deffile modfile))
|
||
(error "I can find neither definition nor implementation of %s"
|
||
modulename)))
|
||
(cond (deffile
|
||
(find-file deffile)
|
||
(if modfile
|
||
(save-excursion
|
||
(find-file modfile))))
|
||
(modfile
|
||
(find-file modfile)))))
|
||
|
||
(defun m2-toggle ()
|
||
"Toggle between .mod and .def files for the module."
|
||
(interactive)
|
||
(cond ((string-equal (substring (buffer-name) -4) ".def")
|
||
(find-file-other-window
|
||
(concat (substring (buffer-name) 0 -4) ".mod")))
|
||
((string-equal (substring (buffer-name) -4) ".mod")
|
||
(find-file-other-window
|
||
(concat (substring (buffer-name) 0 -4) ".def")))
|
||
((string-equal (substring (buffer-name) -3) ".mi")
|
||
(find-file-other-window
|
||
(concat (substring (buffer-name) 0 -3) ".md")))
|
||
((string-equal (substring (buffer-name) -3) ".md")
|
||
(find-file-other-window
|
||
(concat (substring (buffer-name) 0 -3) ".mi")))))
|
||
|
||
(provide 'modula2)
|
||
|
||
;;; modula2.el ends here
|