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455 lines
13 KiB
EmacsLisp
455 lines
13 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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;; 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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;;; 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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(defvar m2-compile-command "m2c"
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"Command to compile Modula-2 programs")
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(defvar m2-link-command "m2l"
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"Command to link Modula-2 programs")
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(defvar m2-link-name nil
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"Name of the executable.")
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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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(defvar m2-indent 5 "*This variable gives the indentation in Modula-2-Mode")
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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 'end-comment-column)
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(setq end-comment-column 75)
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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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(run-hooks 'm2-mode-hook))
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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)
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(m2-newline)
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(insert "VAR")
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(m2-newline)
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(m2-tab))
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(defun m2-while ()
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(interactive)
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(insert "WHILE ")
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(let ((name (read-string "<boolean-expression>: ")))
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(insert name " DO" )
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(m2-newline)
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(m2-newline)
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(insert "END (* while " name " *);"))
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(end-of-line 0)
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(m2-tab))
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(defun m2-export ()
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(interactive)
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(insert "EXPORT QUALIFIED "))
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(defun m2-import ()
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(interactive)
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(insert "FROM ")
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(insert (read-string "Module: "))
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(insert " IMPORT "))
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(defun m2-begin-comment ()
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(interactive)
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(if (not (bolp))
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(indent-to comment-column 0))
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(insert "(* "))
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(defun m2-end-comment ()
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(interactive)
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(if (not (bolp))
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(indent-to end-comment-column))
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(insert "*)"))
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(defun m2-compile ()
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(interactive)
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(setq modulename (buffer-name))
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(compile (concat m2-compile-command " " modulename)))
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(defun m2-link ()
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(interactive)
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(setq modulename (buffer-name))
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(if m2-link-name
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(compile (concat m2-link-command " " m2-link-name))
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(compile (concat m2-link-command " "
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(setq m2-link-name (read-string "Name of executable: "
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modulename))))))
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(defun m2-execute-monitor-command (command)
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(let* ((shell shell-file-name)
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(csh (equal (file-name-nondirectory shell) "csh")))
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(call-process shell nil t t "-cf" (concat "exec " command))))
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(defun m2-visit ()
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(interactive)
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(let ((deffile nil)
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(modfile nil)
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modulename)
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(save-excursion
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(setq modulename
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(read-string "Module name: "))
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(switch-to-buffer "*Command Execution*")
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(m2-execute-monitor-command (concat "m2whereis " modulename))
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(goto-char (point-min))
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(condition-case ()
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(progn (re-search-forward "\\(.*\\.def\\) *$")
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(setq deffile (buffer-substring (match-beginning 1)
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(match-end 1))))
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(search-failed ()))
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(condition-case ()
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(progn (re-search-forward "\\(.*\\.mod\\) *$")
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(setq modfile (buffer-substring (match-beginning 1)
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(match-end 1))))
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(search-failed ()))
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(if (not (or deffile modfile))
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(error "I can find neither definition nor implementation of %s"
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modulename)))
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(cond (deffile
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(find-file deffile)
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(if modfile
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(save-excursion
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(find-file modfile))))
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(modfile
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(find-file modfile)))))
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(defun m2-toggle ()
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"Toggle between .mod and .def files for the module."
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(interactive)
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(cond ((string-equal (substring (buffer-name) -4) ".def")
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(find-file-other-window
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(concat (substring (buffer-name) 0 -4) ".mod")))
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((string-equal (substring (buffer-name) -4) ".mod")
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(find-file-other-window
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(concat (substring (buffer-name) 0 -4) ".def")))
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((string-equal (substring (buffer-name) -3) ".mi")
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(find-file-other-window
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(concat (substring (buffer-name) 0 -3) ".md")))
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((string-equal (substring (buffer-name) -3) ".md")
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(find-file-other-window
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(concat (substring (buffer-name) 0 -3) ".mi")))))
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;;; modula2.el ends here
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