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1774 lines
65 KiB
EmacsLisp
1774 lines
65 KiB
EmacsLisp
;;; simula.el --- SIMULA 87 code editing commands for Emacs
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;; Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
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;; Author: Hans Henrik Eriksen <hhe@ifi.uio.no>
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;; Maintainer: simula-mode@ifi.uio.no
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;; Adapted-By: ESR
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;; Keywords: languages
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; A major mode for editing the Simula language. It knows about Simula
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;; syntax and standard indentation commands. It also provides convenient
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;; abbrevs for Simula keywords.
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;;
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;; Hans Henrik Eriksen (the author) may be reached at:
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;; Institutt for informatikk,
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;; Universitetet i Oslo
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;;; Code:
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(defconst simula-tab-always-indent-default nil
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"Non-nil means TAB in SIMULA mode should always reindent the current line.
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Otherwise TAB indents only when point is within
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the run of whitespace at the beginning of the line.")
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(defvar simula-tab-always-indent simula-tab-always-indent-default
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"*Non-nil means TAB in SIMULA mode should always reindent the current line.
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Otherwise TAB indents only when point is within
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the run of whitespace at the beginning of the line.")
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(defconst simula-indent-level-default 3
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"Indentation of SIMULA statements with respect to containing block.")
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(defvar simula-indent-level simula-indent-level-default
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"*Indentation of SIMULA statements with respect to containing block.")
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(defconst simula-substatement-offset-default 3
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"Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.")
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(defvar simula-substatement-offset simula-substatement-offset-default
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"*Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.")
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(defconst simula-continued-statement-offset-default 3
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"Extra indentation for lines not starting a statement or substatement.
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If value is a list, each line in a multipleline continued statement
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will have the car of the list extra indentation with respect to
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the previous line of the statement.")
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(defvar simula-continued-statement-offset simula-continued-statement-offset-default
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"*Extra indentation for lines not starting a statement or substatement.
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If value is a list, each line in a multipleline continued statement
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will have the car of the list extra indentation with respect to
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the previous line of the statement.")
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(defconst simula-label-offset-default -4711
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"Offset of SIMULA label lines relative to usual indentation.")
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(defvar simula-label-offset simula-label-offset-default
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"*Offset of SIMULA label lines relative to usual indentation.")
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(defconst simula-if-indent-default '(0 . 0)
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"Extra indentation of THEN and ELSE with respect to the starting IF.
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Value is a cons cell, the car is extra THEN indentation and the cdr
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extra ELSE indentation. IF after ELSE is indented as the starting IF.")
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(defvar simula-if-indent simula-if-indent-default
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"*Extra indentation of THEN and ELSE with respect to the starting IF.
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Value is a cons cell, the car is extra THEN indentation and the cdr
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extra ELSE indentation. IF after ELSE is indented as the starting IF.")
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(defconst simula-inspect-indent-default '(0 . 0)
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"Extra indentation of WHEN and OTHERWISE with respect to the INSPECT.
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Value is a cons cell, the car is extra WHEN indentation
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and the cdr extra OTHERWISE indentation.")
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(defvar simula-inspect-indent simula-inspect-indent-default
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"*Extra indentation of WHEN and OTHERWISE with respect to the INSPECT.
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Value is a cons cell, the car is extra WHEN indentation
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and the cdr extra OTHERWISE indentation.")
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(defconst simula-electric-indent-default nil
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"Non-nil means `simula-indent-line' function may reindent previous line.")
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(defvar simula-electric-indent simula-electric-indent-default
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"*Non-nil means `simula-indent-line' function may reindent previous line.")
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(defconst simula-abbrev-keyword-default 'upcase
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"Specify how to convert case for SIMULA keywords.
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Value is one of the symbols `upcase', `downcase', `capitalize',
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(as in) `abbrev-table' or nil if they should not be changed.")
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(defvar simula-abbrev-keyword simula-abbrev-keyword-default
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"*Specify how to convert case for SIMULA keywords.
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Value is one of the symbols `upcase', `downcase', `capitalize',
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(as in) `abbrev-table' or nil if they should not be changed.")
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(defconst simula-abbrev-stdproc-default 'abbrev-table
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"Specify how to convert case for standard SIMULA procedure and class names.
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Value is one of the symbols `upcase', `downcase', `capitalize',
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(as in) `abbrev-table', or nil if they should not be changed.")
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(defvar simula-abbrev-stdproc simula-abbrev-stdproc-default
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"*Specify how to convert case for standard SIMULA procedure and class names.
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Value is one of the symbols `upcase', `downcase', `capitalize',
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(as in) `abbrev-table', or nil if they should not be changed.")
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(defvar simula-abbrev-file nil
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"*File with extra abbrev definitions for use in SIMULA mode.
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These are used together with the standard abbrev definitions for SIMULA.
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Please note that the standard definitions are required
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for SIMULA mode to function correctly.")
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(defvar simula-mode-syntax-table nil
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"Syntax table in SIMULA mode buffers.")
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;; Regexps written with help from Alf-Ivar Holm <alfh@ifi.uio.no>.
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(defconst simula-font-lock-keywords-1
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(list
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;;
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;; Comments and strings.
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'(simula-match-string-or-comment 0
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(if (match-beginning 1) font-lock-string-face font-lock-comment-face))
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;;
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;; Compiler directives.
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'("^%\\([^ \t\n].*\\)" 1 font-lock-reference-face)
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;;
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;; Class and procedure names.
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'("\\<\\(class\\|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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"Subdued level highlighting for Simula mode.")
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(defconst simula-font-lock-keywords-2
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(append simula-font-lock-keywords-1
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(list
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;;
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;; Constants as references.
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'("\\<\\(false\\|none\\|notext\\|true\\)\\>" . font-lock-reference-face)
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;;
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;; Keywords.
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(concat "\\<\\("
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; (make-regexp
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; '("activate" "after" "and" "at" "before" "begin" "delay" "do"
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; "else" "end" "eq" "eqv" "external" "for" "ge" "go" "goto" "gt"
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; "hidden" "if" "imp" "in" "inner" "inspect" "is" "label" "le"
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; "lt" "ne" "new" "not" "or" "otherwise" "prior" "protected"
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; "qua" "reactivate" "step" "switch" "then" "this" "to" "until"
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; "virtual" "when" "while"))
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"a\\(ctivate\\|fter\\|nd\\|t\\)\\|be\\(fore\\|gin\\)\\|"
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"d\\(elay\\|o\\)\\|e\\(lse\\|nd\\|qv?\\|xternal\\)\\|for\\|"
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"g\\([eot]\\|oto\\)\\|hidden\\|i\\([fns]\\|mp\\|n\\(ner\\|"
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"spect\\)\\)\\|l\\([et]\\|abel\\)\\|n\\(ew?\\|ot\\)\\|"
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"o\\(r\\|therwise\\)\\|pr\\(ior\\|otected\\)\\|qua\\|"
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"reactivate\\|s\\(tep\\|witch\\)\\|t\\(h\\(en\\|is\\)\\|o\\)\\|"
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"until\\|virtual\\|wh\\(en\\|ile\\)"
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"\\)\\>")
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;;
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;; Types.
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(cons (concat "\\<\\(array\\|boolean\\|character\\|integer\\|"
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"long\\|name\\|real\\|short\\|text\\|value\\|ref\\)\\>")
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'font-lock-type-face)
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))
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"Medium level highlighting for Simula mode.")
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(defconst simula-font-lock-keywords-3
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(append simula-font-lock-keywords-2
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(list
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;;
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;; Super-class names and super-slow.
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'("\\<\\(\\sw+\\)[ \t]+class\\>" 1 font-lock-function-name-face)
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;;
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;; Types and their declarations.
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(list (concat "\\<\\(array\\|boolean\\|character\\|integer\\|"
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"long\\|name\\|real\\|short\\|text\\|value\\)\\>"
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"\\([ \t]+\\sw+\\>\\)*")
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'(font-lock-match-c-style-declaration-item-and-skip-to-next
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;; Start with point after all type specifiers.
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(goto-char (or (match-beginning 2) (match-end 1)))
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;; Finish with point after first type specifier.
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(goto-char (match-end 1))
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;; Fontify as a variable name.
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(1 font-lock-variable-name-face)))
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;;
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;; Object references and their declarations.
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'("\\<\\(ref\\)\\>[ \t]*\\((\\(\\sw+\\))\\)?"
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(3 font-lock-function-name-face nil t)
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(font-lock-match-c-style-declaration-item-and-skip-to-next nil nil
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(1 font-lock-variable-name-face)))
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))
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"Gaudy level highlighting for Simula mode.")
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(defvar simula-font-lock-keywords simula-font-lock-keywords-1
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"Default expressions to highlight in Simula mode.")
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; The following function is taken from cc-mode.el,
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; it determines the flavor of the Emacs running
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(defconst simula-emacs-features
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(let ((major (and (boundp 'emacs-major-version)
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emacs-major-version))
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(minor (and (boundp 'emacs-minor-version)
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emacs-minor-version))
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flavor comments)
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;; figure out version numbers if not already discovered
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(and (or (not major) (not minor))
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(string-match "\\([0-9]+\\).\\([0-9]+\\)" emacs-version)
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(setq major (string-to-int (substring emacs-version
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(match-beginning 1)
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(match-end 1)))
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minor (string-to-int (substring emacs-version
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(match-beginning 2)
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(match-end 2)))))
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(if (not (and major minor))
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(error "Cannot figure out the major and minor version numbers."))
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;; calculate the major version
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(cond
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((= major 18) (setq major 'v18)) ;Emacs 18
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((= major 4) (setq major 'v18)) ;Epoch 4
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((= major 19) (setq major 'v19 ;Emacs 19
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flavor (if (string-match "Lucid" emacs-version)
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'Lucid 'FSF)))
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;; I don't know
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(t (error "Cannot recognize major version number: %s" major)))
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(list major flavor comments))
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"A list of features extant in the Emacs you are using.
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There are many flavors of Emacs out there, each with different
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features supporting those needed by simula-mode. Here's the current
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supported list, along with the values for this variable:
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Emacs 19: (v19 FSF 1-bit)
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Vanilla Emacs 18/Epoch 4: (v18 no-dual-comments)
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Emacs 18/Epoch 4 (patch2): (v18 8-bit)
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Lucid Emacs 19: (v19 Lucid 8-bit).")
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(defvar simula-mode-menu
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'(["Report Bug" simula-submit-bug-report t]
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["Indent Line" simula-indent-line t]
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["Backward Statement" simula-previous-statement t]
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["Forward Statement" simula-next-statement t]
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["Backward Up Level" simula-backward-up-level t]
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["Forward Down Statement" simula-forward-down-level t]
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)
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"Lucid Emacs menu for SIMULA mode.")
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(if simula-mode-syntax-table
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()
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(setq simula-mode-syntax-table (copy-syntax-table (standard-syntax-table)))
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(modify-syntax-entry ?! "<" simula-mode-syntax-table)
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(modify-syntax-entry ?$ "." simula-mode-syntax-table)
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(modify-syntax-entry ?% "." simula-mode-syntax-table)
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(modify-syntax-entry ?' "\"" simula-mode-syntax-table)
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(modify-syntax-entry ?\( "()" simula-mode-syntax-table)
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(modify-syntax-entry ?\) ")(" simula-mode-syntax-table)
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(modify-syntax-entry ?\; ">" simula-mode-syntax-table)
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(modify-syntax-entry ?\[ "." simula-mode-syntax-table)
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(modify-syntax-entry ?\\ "." simula-mode-syntax-table)
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(modify-syntax-entry ?\] "." simula-mode-syntax-table)
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(modify-syntax-entry ?_ "_" simula-mode-syntax-table)
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(modify-syntax-entry ?\| "." simula-mode-syntax-table)
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(modify-syntax-entry ?\{ "." simula-mode-syntax-table)
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(modify-syntax-entry ?\} "." simula-mode-syntax-table))
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(defvar simula-mode-map ()
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"Keymap used in SIMULA mode.")
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(if simula-mode-map
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()
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(setq simula-mode-map (make-sparse-keymap))
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(define-key simula-mode-map "\C-c\C-u" 'simula-backward-up-level)
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(define-key simula-mode-map "\C-c\C-p" 'simula-previous-statement)
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(define-key simula-mode-map "\C-c\C-d" 'simula-forward-down-level)
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(define-key simula-mode-map "\C-c\C-n" 'simula-next-statement)
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;(define-key simula-mode-map "\C-c\C-g" 'simula-goto-definition)
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;(define-key simula-mode-map "\C-c\C-h" 'simula-standard-help)
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(define-key simula-mode-map "\177" 'backward-delete-char-untabify)
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(define-key simula-mode-map ":" 'simula-electric-label)
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(define-key simula-mode-map "\e\C-q" 'simula-indent-exp)
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(define-key simula-mode-map "\t" 'simula-indent-command)
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;; Emacs 19 defines menus in the mode map
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(if (memq 'FSF simula-emacs-features)
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(progn
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(define-key simula-mode-map [menu-bar] (make-sparse-keymap))
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(define-key simula-mode-map [menu-bar simula]
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(cons "SIMULA" (make-sparse-keymap "SIMULA")))
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(define-key simula-mode-map [menu-bar simula bug-report]
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'("Submit Bug Report" . simula-submit-bug-report))
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(define-key simula-mode-map [menu-bar simula separator-indent]
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'("--"))
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(define-key simula-mode-map [menu-bar simula indent-exp]
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'("Indent Expression" . simula-indent-exp))
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(define-key simula-mode-map [menu-bar simula indent-line]
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'("Indent Line" . simula-indent-command))
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(define-key simula-mode-map [menu-bar simula separator-navigate]
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'("--"))
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(define-key simula-mode-map [menu-bar simula backward-stmt]
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'("Previous Statement" . simula-previous-statement))
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(define-key simula-mode-map [menu-bar simula forward-stmt]
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'("Next Statement" . simula-next-statement))
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(define-key simula-mode-map [menu-bar simula backward-up]
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'("Backward Up Level" . simula-backward-up-level))
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(define-key simula-mode-map [menu-bar simula forward-down]
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'("Forward Down Statement" . simula-forward-down-level))
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(put 'simula-next-statement 'menu-enable '(not (eobp)))
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(put 'simula-previous-statement 'menu-enable '(not (bobp)))
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(put 'simula-forward-down-level 'menu-enable '(not (eobp)))
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(put 'simula-backward-up-level 'menu-enable '(not (bobp)))
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(put 'simula-indent-command 'menu-enable '(not buffer-read-only))
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(put 'simula-indent-exp 'menu-enable '(not buffer-read-only))))
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;; RMS: mouse-3 should not select this menu. mouse-3's global
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;; definition is useful in SIMULA mode and we should not interfere
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;; with that. The menu is mainly for beginners, and for them,
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;; the menubar requires less memory than a special click.
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;; in Lucid Emacs, we want the menu to popup when the 3rd button is
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;; hit. In 19.10 and beyond this is done automatically if we put
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;; the menu on mode-popup-menu variable, see c-common-init [cc-mode.el]
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(if (memq 'Lucid simula-emacs-features)
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(if (not (boundp 'mode-popup-menu))
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(define-key simula-mode-map 'button3 'simula-popup-menu))))
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;; menus for Lucid
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(defun simula-popup-menu (e)
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"Pops up the SIMULA menu."
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(interactive "@e")
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(popup-menu (cons (concat mode-name " Mode Commands") simula-mode-menu))
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(simula-keep-region-active))
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;; active regions, and auto-newline/hungry delete key
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(defun simula-keep-region-active ()
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;; do whatever is necessary to keep the region active in
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;; Lucid. ignore byte-compiler warnings you might see
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(and (boundp 'zmacs-region-stays)
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(setq zmacs-region-stays t)))
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(defvar simula-mode-abbrev-table nil
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"Abbrev table in SIMULA mode buffers")
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;;;###autoload
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(defun simula-mode ()
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"Major mode for editing SIMULA code.
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\\{simula-mode-map}
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Variables controlling indentation style:
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simula-tab-always-indent
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Non-nil means TAB in SIMULA mode should always reindent the current line,
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regardless of where in the line point is when the TAB command is used.
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simula-indent-level
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Indentation of SIMULA statements with respect to containing block.
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simula-substatement-offset
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Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.
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simula-continued-statement-offset 3
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Extra indentation for lines not starting a statement or substatement,
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e.g. a nested FOR-loop. If value is a list, each line in a multiple-
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line continued statement will have the car of the list extra indentation
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with respect to the previous line of the statement.
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simula-label-offset -4711
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Offset of SIMULA label lines relative to usual indentation.
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simula-if-indent '(0 . 0)
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Extra indentation of THEN and ELSE with respect to the starting IF.
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Value is a cons cell, the car is extra THEN indentation and the cdr
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extra ELSE indentation. IF after ELSE is indented as the starting IF.
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simula-inspect-indent '(0 . 0)
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Extra indentation of WHEN and OTHERWISE with respect to the
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corresponding INSPECT. Value is a cons cell, the car is
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extra WHEN indentation and the cdr extra OTHERWISE indentation.
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simula-electric-indent nil
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If this variable is non-nil, `simula-indent-line'
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will check the previous line to see if it has to be reindented.
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simula-abbrev-keyword 'upcase
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Determine how SIMULA keywords will be expanded. Value is one of
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the symbols `upcase', `downcase', `capitalize', (as in) `abbrev-table',
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or nil if they should not be changed.
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simula-abbrev-stdproc 'abbrev-table
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Determine how standard SIMULA procedure and class names will be
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expanded. Value is one of the symbols `upcase', `downcase', `capitalize',
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(as in) `abbrev-table', or nil if they should not be changed.
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Turning on SIMULA mode calls the value of the variable simula-mode-hook
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with no arguments, if that value is non-nil
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Warning: simula-mode-hook should not read in an abbrev file without calling
|
||
the function simula-install-standard-abbrevs afterwards, preferably not
|
||
at all."
|
||
(interactive)
|
||
(kill-all-local-variables)
|
||
(use-local-map simula-mode-map)
|
||
(setq major-mode 'simula-mode)
|
||
(setq mode-name "SIMULA")
|
||
(make-local-variable 'comment-column)
|
||
(setq comment-column 40)
|
||
; (make-local-variable 'end-comment-column)
|
||
; (setq end-comment-column 75)
|
||
(set-syntax-table simula-mode-syntax-table)
|
||
(make-local-variable 'paragraph-start)
|
||
(setq paragraph-start "[ \t]*$\\|\\f")
|
||
(make-local-variable 'paragraph-separate)
|
||
(setq paragraph-separate paragraph-start)
|
||
(make-local-variable 'indent-line-function)
|
||
(setq indent-line-function 'simula-indent-line)
|
||
(make-local-variable 'require-final-newline)
|
||
(setq require-final-newline t)
|
||
(make-local-variable 'comment-start)
|
||
(setq comment-start "! ")
|
||
(make-local-variable 'comment-end)
|
||
(setq comment-end " ;")
|
||
(make-local-variable 'comment-start-skip)
|
||
(setq comment-start-skip "!+ *")
|
||
(make-local-variable 'parse-sexp-ignore-comments)
|
||
(setq parse-sexp-ignore-comments nil)
|
||
(make-local-variable 'comment-multi-line)
|
||
(setq comment-multi-line t)
|
||
(make-local-variable 'font-lock-defaults)
|
||
(setq font-lock-defaults
|
||
'((simula-font-lock-keywords simula-font-lock-keywords-1
|
||
simula-font-lock-keywords-2 simula-font-lock-keywords-3)
|
||
t t ((?_ . "w"))))
|
||
(if simula-mode-abbrev-table
|
||
()
|
||
(if simula-abbrev-file
|
||
(read-abbrev-file simula-abbrev-file)
|
||
(define-abbrev-table 'simula-mode-abbrev-table ()))
|
||
(let (abbrevs-changed)
|
||
(simula-install-standard-abbrevs)))
|
||
(setq local-abbrev-table simula-mode-abbrev-table)
|
||
(abbrev-mode 1)
|
||
(run-hooks 'simula-mode-hook))
|
||
|
||
|
||
(defun simula-indent-exp ()
|
||
"Indent SIMULA expression following point."
|
||
(interactive)
|
||
(let ((here (point))
|
||
(simula-electric-indent nil)
|
||
end)
|
||
(simula-skip-comment-forward)
|
||
(if (eobp)
|
||
(goto-char here)
|
||
(unwind-protect
|
||
(progn
|
||
(simula-next-statement 1)
|
||
(setq end (point-marker))
|
||
(simula-previous-statement 1)
|
||
(beginning-of-line)
|
||
(while (< (point) end)
|
||
(if (not (looking-at "[ \t]*$"))
|
||
(simula-indent-line))
|
||
(forward-line 1)))
|
||
(and end (set-marker end nil))))))
|
||
|
||
|
||
(defun simula-indent-line ()
|
||
"Indent this line as SIMULA code.
|
||
If `simula-electric-indent' is non-nil, indent previous line if necessary."
|
||
(let ((origin (- (point-max) (point)))
|
||
(indent (simula-calculate-indent))
|
||
(case-fold-search t))
|
||
(unwind-protect
|
||
(if simula-electric-indent
|
||
(progn
|
||
;;
|
||
;; manually expand abbrev on last line, if any
|
||
;;
|
||
(end-of-line 0)
|
||
(expand-abbrev)
|
||
;; now maybe we should reindent that line
|
||
(beginning-of-line)
|
||
(skip-chars-forward " \t\f")
|
||
(if (and
|
||
(looking-at
|
||
"\\(end\\|if\\|then\\|else\\|when\\|otherwise\\)\\>")
|
||
(not (simula-context)))
|
||
;; yes - reindent
|
||
(let ((post-indent (simula-calculate-indent)))
|
||
(if (eq (current-indentation) post-indent)
|
||
()
|
||
(delete-horizontal-space)
|
||
(indent-to post-indent))))))
|
||
(goto-char (- (point-max) origin))
|
||
(if (eq (current-indentation) indent)
|
||
(back-to-indentation)
|
||
(delete-horizontal-space)
|
||
(indent-to indent)))))
|
||
|
||
|
||
(defun simula-indent-command (&optional whole-exp)
|
||
"Indent current line as SIMULA code, or insert TAB character.
|
||
If `simula-tab-always-indent' is non-nil, always indent current line.
|
||
Otherwise, indent only if point is before any non-whitespace
|
||
character on the line.
|
||
|
||
A numeric argument, regardless of its value, means indent rigidly
|
||
all the lines of the SIMULA statement after point so that this line
|
||
becomes properly indented.
|
||
The relative indentation among the lines of the statement are preserved."
|
||
(interactive "P")
|
||
(let ((case-fold-search t))
|
||
(if (or whole-exp simula-tab-always-indent
|
||
(save-excursion
|
||
(skip-chars-backward " \t\f")
|
||
(bolp)))
|
||
;; reindent current line
|
||
(let ((indent (save-excursion
|
||
(beginning-of-line)
|
||
(simula-calculate-indent)))
|
||
(current (current-indentation))
|
||
(origin (- (point-max) (point)))
|
||
(bol (save-excursion
|
||
(skip-chars-backward " \t\f")
|
||
(bolp)))
|
||
beg end)
|
||
(unwind-protect
|
||
(if (eq current indent)
|
||
(if (save-excursion
|
||
(skip-chars-backward " \t\f")
|
||
(bolp))
|
||
(back-to-indentation))
|
||
(beginning-of-line)
|
||
(delete-horizontal-space)
|
||
(indent-to indent))
|
||
(if (not bol)
|
||
(goto-char (- (point-max) origin))))
|
||
(setq origin (point))
|
||
(if whole-exp
|
||
(save-excursion
|
||
(beginning-of-line 2)
|
||
(setq beg (point))
|
||
(goto-char origin)
|
||
(simula-next-statement 1)
|
||
(setq end (point))
|
||
(if (and (> end beg) (not (eq indent current)))
|
||
(indent-code-rigidly beg end (- indent current) "%")))))
|
||
(insert-tab))))
|
||
|
||
|
||
(defun simula-context ()
|
||
"Returns value according to syntactic SIMULA context of point.
|
||
0 point inside COMMENT comment
|
||
1 point on SIMULA-compiler directive line
|
||
2 point inside END comment
|
||
3 point inside string
|
||
4 point inside character constant
|
||
nil otherwise."
|
||
;; first, find out if this is a compiler directive line
|
||
(if (save-excursion
|
||
(beginning-of-line)
|
||
(eq (following-char) ?%))
|
||
;; YES - return 1
|
||
1
|
||
(save-excursion
|
||
;; The current line is NOT a compiler directive line.
|
||
;; Now, the strategy is to search backward to find a semicolon
|
||
;; that is NOT inside a string. The point after semicolon MUST be
|
||
;; outside a comment, since semicolons are comment-ending and
|
||
;; comments are non-recursive. We take advantage of the fact
|
||
;; that strings MUST end on the same line as they started, so
|
||
;; that we can easily decide whether we are inside a string or not.
|
||
(let (return-value (origin (point)))
|
||
(skip-chars-backward "^;" (point-min))
|
||
;; found semicolon or beginning of buffer
|
||
(let (loopvalue (saved-point origin))
|
||
(while (and (not (bobp))
|
||
(if (progn
|
||
(beginning-of-line)
|
||
;; compiler directive line? If so, cont searching..
|
||
(eq (following-char) ?%))
|
||
t
|
||
(while (< (point) saved-point)
|
||
(skip-chars-forward "^;\"'")
|
||
(forward-char 1)
|
||
(cond
|
||
((eq (preceding-char) ?\;)
|
||
(setq saved-point (point)))
|
||
((eq (preceding-char) ?\")
|
||
(skip-chars-forward "^\";")
|
||
(if (eq (following-char) ?\;)
|
||
(setq saved-point (point) loopvalue t)
|
||
(forward-char 1)))
|
||
(t
|
||
(if (eq (following-char) ?')
|
||
(forward-char 1))
|
||
(skip-chars-forward "^';")
|
||
(if (eq (following-char) ?\;)
|
||
(setq saved-point (point) loopvalue t)
|
||
(forward-char 1)))))
|
||
loopvalue))
|
||
(backward-char 1)
|
||
(skip-chars-backward "^;")
|
||
(setq saved-point (point) loopvalue nil)))
|
||
;; Now we are CERTAIN that we are outside comments and strings.
|
||
;; The job now is to search forward again towards the origin
|
||
;; skipping directives, comments and strings correctly,
|
||
;; so that we know what context we are in when we find the origin.
|
||
(while (and
|
||
(< (point) origin)
|
||
(re-search-forward
|
||
"\\<end\\>\\|!\\|\"\\|'\\|^%\\|\\<comment\\>" origin 'move))
|
||
(cond
|
||
((memq (preceding-char) '(?d ?D))
|
||
(setq return-value 2)
|
||
(while (and (re-search-forward
|
||
";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>\\|^%"
|
||
origin 'move)
|
||
;; found another END?
|
||
(or (memq (preceding-char) '(?d ?D))
|
||
;; if directive, skip line
|
||
(and (eq (preceding-char) ?%)
|
||
(beginning-of-line 2))
|
||
;; found other keyword, out of END comment
|
||
(setq return-value nil))))
|
||
(if (and (eq (char-syntax (preceding-char)) ?w)
|
||
(eq (char-syntax (following-char)) ?w))
|
||
(save-excursion
|
||
(backward-word 1)
|
||
(if (looking-at "end\\>\\|else\\>\\|otherwise\\>\\|when\\>")
|
||
(setq return-value nil)))))
|
||
((memq (preceding-char) '(?! ?t ?T))
|
||
; skip comment
|
||
(setq return-value 0)
|
||
(skip-chars-forward "^%;" origin)
|
||
(while (and return-value (< (point) origin))
|
||
(if (eq (following-char) ?\;)
|
||
(setq return-value nil)
|
||
(if (bolp)
|
||
(beginning-of-line 2) ; skip directive inside comment
|
||
(forward-char 1)) ; or single '%'
|
||
(skip-chars-forward "^%;" origin))))
|
||
((eq (preceding-char) ?\")
|
||
(if (not (search-forward "\"" origin 'move))
|
||
(setq return-value 3)))
|
||
((eq (preceding-char) ?\')
|
||
(if (or (eq (point) origin) (eobp))
|
||
(setq return-value 4)
|
||
(forward-char 1)
|
||
(if (not (search-forward "'" origin 'move))
|
||
(setq return-value 4))))
|
||
;; compiler directive line - skip
|
||
(t (beginning-of-line 2))))
|
||
return-value)
|
||
)))
|
||
|
||
|
||
(defun simula-electric-label ()
|
||
"If this is a label that starts the line, reindent the line."
|
||
(interactive)
|
||
(expand-abbrev)
|
||
(insert ?:)
|
||
(let ((origin (- (point-max) (point)))
|
||
(case-fold-search t)
|
||
;; don't mix a label with an assignment operator := :-
|
||
;; therefore take a peek at next typed character...
|
||
(next-char (read-event)))
|
||
(unwind-protect
|
||
(setq unread-command-events (append unread-command-events
|
||
(list next-char)))
|
||
;; Problem: find out if character just read is a command char
|
||
;; that would insert something after ':' making it a label.
|
||
;; At least \n, \r (and maybe \t) falls into this category.
|
||
;; This is a real crock, it depends on traditional keymap
|
||
;; bindings, that is, printing characters doing self-insert,
|
||
;; and no other command sequence inserting '-' or '='.
|
||
;; simula-electric-label can be easily fooled...
|
||
(if (and (not (memq next-char '(?= ?-)))
|
||
(or (memq next-char '(?\n ?\r))
|
||
(and (eq next-char ?\t)
|
||
simula-tab-always-indent)
|
||
(not (memq (following-char) '(?= ?-))))
|
||
(not (simula-context))
|
||
;; label?
|
||
(progn
|
||
(backward-char 1)
|
||
(skip-chars-backward " \t\f")
|
||
(skip-chars-backward "a-zA-Z0-9_")
|
||
(if (looking-at "virtual\\>")
|
||
nil
|
||
(skip-chars-backward " \t\f")
|
||
(bolp))))
|
||
(let ((amount (simula-calculate-indent)))
|
||
(delete-horizontal-space)
|
||
(indent-to amount)))
|
||
(goto-char (- (point-max) origin)))))
|
||
|
||
|
||
(defun simula-backward-up-level (count)
|
||
"Move backward up COUNT block levels.
|
||
If COUNT is negative, move forward up block level instead."
|
||
(interactive "p")
|
||
(let ((origin (point))
|
||
(case-fold-search t))
|
||
(condition-case ()
|
||
(if (> count 0)
|
||
(while (> count 0)
|
||
(re-search-backward "\\<begin\\>\\|\\<end\\>")
|
||
(if (not (simula-context))
|
||
(setq count (if (memq (following-char) '(?b ?B))
|
||
(1- count)
|
||
(1+ count)))))
|
||
(while (< count 0)
|
||
(re-search-forward "\\<begin\\>\\|\\<end\\>")
|
||
(backward-word 1)
|
||
(if (not (simula-context))
|
||
(setq count (if (memq (following-char) '(?e ?E))
|
||
(1+ count)
|
||
(1- count))))
|
||
(backward-word -1)))
|
||
;; If block level not found, jump back to origin and signal an error
|
||
(error (progn
|
||
(goto-char origin)
|
||
(error "No higher block level")))
|
||
(quit (progn
|
||
(goto-char origin)
|
||
(signal 'quit nil))))))
|
||
|
||
|
||
(defun simula-forward-down-level (count)
|
||
"Move forward down COUNT block levels.
|
||
If COUNT is negative, move backward down block level instead."
|
||
(interactive "p")
|
||
;; When we search for a deeper block level, we must never
|
||
;; get out of the block where we started -> count >= start-count
|
||
(let ((start-count count)
|
||
(origin (point))
|
||
(case-fold-search t))
|
||
(condition-case ()
|
||
(if (< count 0)
|
||
(while (< count 0)
|
||
(re-search-backward "\\<begin\\>\\|\\<end\\>")
|
||
(if (not (simula-context))
|
||
(setq count (if (memq (following-char) '(?e ?E))
|
||
(1+ count)
|
||
(1- count))))
|
||
(if (< count start-count) (signal 'error nil)))
|
||
(while (> count 0)
|
||
(re-search-forward "\\<begin\\>\\|\\<end\\>")
|
||
(backward-word 1)
|
||
(if (not (simula-context))
|
||
(setq count (if (memq (following-char) '(?b ?B))
|
||
(1- count)
|
||
(1+ count))))
|
||
(backward-word -1)
|
||
;; deeper level has to be found within starting block
|
||
(if (> count start-count) (signal 'error nil))))
|
||
;; If block level not found, jump back to origin and signal an error
|
||
(error (progn
|
||
(goto-char origin)
|
||
(error "No containing block level")))
|
||
(quit (progn
|
||
(goto-char origin)
|
||
(signal 'quit nil))))))
|
||
|
||
|
||
(defun simula-previous-statement (count)
|
||
"Move backward COUNT statements.
|
||
If COUNT is negative, move forward instead."
|
||
(interactive "p")
|
||
(if (< count 0)
|
||
(simula-next-statement (- count))
|
||
(let (status
|
||
(case-fold-search t)
|
||
(origin (point)))
|
||
(condition-case ()
|
||
;;
|
||
(progn
|
||
(simula-skip-comment-backward)
|
||
(if (memq (preceding-char) '(?n ?N))
|
||
(progn
|
||
(backward-word 1)
|
||
(if (not (looking-at "\\<begin\\>"))
|
||
(backward-word -1)))
|
||
(if (eq (preceding-char) ?\;)
|
||
(backward-char 1))
|
||
)
|
||
(while (and (natnump (setq count (1- count)))
|
||
(setq status (simula-search-backward
|
||
";\\|\\<begin\\>" nil 'move))))
|
||
(if status
|
||
(progn
|
||
(if (eq (following-char) ?\;)
|
||
(forward-char 1)
|
||
(backward-word -1))))
|
||
(simula-skip-comment-forward))
|
||
(error (progn (goto-char origin)
|
||
(error "Incomplete statement (too many ENDs)")))
|
||
(quit (progn (goto-char origin) (signal 'quit nil)))))))
|
||
|
||
|
||
(defun simula-next-statement (count)
|
||
"Move forward COUNT statements.
|
||
If COUNT is negative, move backward instead."
|
||
(interactive "p")
|
||
(if (< count 0)
|
||
(simula-previous-statement (- count))
|
||
(let (status
|
||
(case-fold-search t)
|
||
(origin (point)))
|
||
(condition-case ()
|
||
(progn
|
||
(simula-skip-comment-forward)
|
||
(if (looking-at "\\<end\\>") (forward-word 1))
|
||
(while (and (natnump (setq count (1- count)))
|
||
(setq status (simula-search-forward
|
||
";\\|\\<end\\>" (point-max) 'move))))
|
||
(if (and status (/= (preceding-char) ?\;))
|
||
(progn
|
||
(backward-word 1)
|
||
(simula-skip-comment-backward))))
|
||
(error (progn (goto-char origin)
|
||
(error "Incomplete statement (too few ENDs)")))
|
||
(quit (progn (goto-char origin) (signal 'quit nil)))))))
|
||
|
||
|
||
(defun simula-skip-comment-backward (&optional stop-at-end)
|
||
"Search towards bob to find first char that is outside a comment."
|
||
(interactive)
|
||
(catch 'simula-out
|
||
(let (context)
|
||
(while t
|
||
(skip-chars-backward " \t\n\f")
|
||
(if (eq (preceding-char) ?\;)
|
||
(save-excursion
|
||
(backward-char 1)
|
||
(setq context (simula-context))
|
||
(if (and stop-at-end (eq context 2))
|
||
(setq context nil)))
|
||
(setq context (simula-context)))
|
||
(cond
|
||
((memq context '(nil 3 4))
|
||
;; check to see if we found a label
|
||
(if (and (eq (preceding-char) ?:)
|
||
(not (memq (following-char) '(?- ?=)))
|
||
(save-excursion
|
||
(skip-chars-backward ": \t\fa-zA-Z0-9_")
|
||
(not (looking-at "virtual\\>"))))
|
||
(skip-chars-backward ": \t\fa-zA-Z0-9_")
|
||
(throw 'simula-out nil)))
|
||
((eq context 0)
|
||
;; since we are inside a comment, it must start somewhere!
|
||
(while (and (re-search-backward "!\\|\\<comment\\>")
|
||
(memq (simula-context) '(0 1)))))
|
||
((eq context 1)
|
||
(beginning-of-line)
|
||
(if (bobp)
|
||
(throw 'simula-out nil)
|
||
(backward-char)))
|
||
((eq context 2)
|
||
;; an END-comment must belong to an END
|
||
(re-search-backward "\\<end\\>")
|
||
(forward-word 1)
|
||
(throw 'simula-out nil))
|
||
;; should be impossible to get here..
|
||
)))))
|
||
|
||
|
||
(defun simula-skip-comment-forward ()
|
||
"Search towards eob to find first char that is outside a comment."
|
||
;; this function assumes we start with point .outside a comment
|
||
(interactive)
|
||
(catch 'simula-out
|
||
(while t
|
||
(skip-chars-forward " \t\n\f")
|
||
;; BUG: the following (0 2) branches don't take into account intermixing
|
||
;; directive lines
|
||
(cond
|
||
((looking-at "!\\|\\<comment\\>")
|
||
(search-forward ";" nil 'move))
|
||
((and (bolp) (eq (following-char) ?%))
|
||
(beginning-of-line 2))
|
||
((and (looking-at "[a-z0-9_]*[ \t\f]*:[^-=]")
|
||
(not (looking-at "virtual\\>")))
|
||
(skip-chars-forward "a-zA-Z0-9_ \t\f:"))
|
||
(t
|
||
(throw 'simula-out t))))))
|
||
|
||
|
||
(defun simula-forward-up-level ()
|
||
(let ((continue-loop t)
|
||
(origin (point))
|
||
(case-fold-search t)
|
||
return-value
|
||
temp)
|
||
(while continue-loop
|
||
(if (re-search-backward "\\<begin\\>\\|\\<end\\>" (point-min) 'move)
|
||
(setq temp (simula-context)
|
||
return-value (and (memq (preceding-char) '(?d ?D))
|
||
(memq temp '(nil 2)))
|
||
continue-loop (and (not return-value)
|
||
(simula-forward-up-level)))
|
||
(setq continue-loop nil)))
|
||
(if return-value
|
||
t
|
||
(goto-char origin)
|
||
nil)))
|
||
|
||
|
||
(defun simula-calculate-indent ()
|
||
(save-excursion
|
||
(let ((where (simula-context))
|
||
(origin (point))
|
||
(indent 0)
|
||
continued
|
||
start-line
|
||
temp
|
||
found-end
|
||
prev-cont)
|
||
(cond
|
||
((eq where 0)
|
||
;;
|
||
;; Comment.
|
||
;; If comment started on previous non-blank line, indent to the
|
||
;; column where the comment started, else indent as that line.
|
||
;;
|
||
(skip-chars-backward " \t\n\f")
|
||
(while (and (not (bolp)) (eq (simula-context) 0))
|
||
(re-search-backward "^\\|!\\|\\<comment\\>"))
|
||
(skip-chars-forward " \t\n\f")
|
||
(prog1
|
||
(current-column)
|
||
(goto-char origin)))
|
||
((eq where 1)
|
||
;;
|
||
;; Directive. Always 0.
|
||
;;
|
||
0)
|
||
;;
|
||
;; Detect missing string delimiters
|
||
;;
|
||
((eq where 3)
|
||
(error "Inside string"))
|
||
((eq where 4)
|
||
(error "Inside character constant"))
|
||
;;
|
||
;; check to see if inside ()'s
|
||
;;
|
||
((setq temp (simula-inside-parens))
|
||
temp)
|
||
;;
|
||
;; Calculate non-comment indentation
|
||
(t
|
||
;; first, find out if this line starts with something that needs
|
||
;; special indentation (END/IF/THEN/ELSE/WHEN/OTHERWISE or label)
|
||
;;
|
||
(skip-chars-forward " \t\f")
|
||
(cond
|
||
;;
|
||
;; END
|
||
;;
|
||
((looking-at "end\\>")
|
||
(setq indent (- simula-indent-level)
|
||
found-end t))
|
||
;;
|
||
;; IF/THEN/ELSE
|
||
;;
|
||
((looking-at "if\\>\\|then\\>\\|else\\>")
|
||
;; search for the *starting* IF
|
||
(cond
|
||
((memq (following-char) '(?T ?t))
|
||
(setq indent (car simula-if-indent)))
|
||
((memq (following-char) '(?E ?e))
|
||
(setq indent (cdr simula-if-indent)))
|
||
(t
|
||
(forward-word 1)
|
||
(setq indent 0)))
|
||
(simula-find-if))
|
||
;;
|
||
;; WHEN/OTHERWISE
|
||
;;
|
||
((looking-at "when\\>\\|otherwise\\>")
|
||
;; search for corresponding INSPECT
|
||
(if (memq (following-char) '(?W ?w))
|
||
(setq indent (car simula-inspect-indent))
|
||
(setq indent (cdr simula-inspect-indent)))
|
||
(simula-find-inspect))
|
||
;;
|
||
;; label:
|
||
;;
|
||
((and (not (looking-at "virtual\\>"))
|
||
(looking-at "[a-z0-9_]*[ \t\f]*:[^-=]"))
|
||
(setq indent simula-label-offset)))
|
||
;; find line with non-comment text
|
||
(simula-skip-comment-backward 'dont-skip-end)
|
||
(if (and found-end
|
||
(not (eq (preceding-char) ?\;))
|
||
(if (memq (preceding-char) '(?N ?n))
|
||
(save-excursion
|
||
(backward-word 1)
|
||
(not (looking-at "begin\\>")))
|
||
t))
|
||
(progn
|
||
(simula-previous-statement 1)
|
||
(simula-skip-comment-backward)))
|
||
(setq start-line
|
||
(save-excursion (beginning-of-line) (point))
|
||
;; - perhaps this is a continued statement
|
||
continued
|
||
(save-excursion
|
||
(and (not (bobp))
|
||
;; (not found-end)
|
||
(if (eq (char-syntax (preceding-char)) ?w)
|
||
(progn
|
||
(backward-word 1)
|
||
(not (looking-at
|
||
"begin\\|then\\|else\\|when\\|otherwise\\|do"
|
||
)))
|
||
(not (memq (preceding-char) '(?: ?\;)))))))
|
||
;;
|
||
;; MAIN calculation loop - count BEGIN/DO etc.
|
||
;;
|
||
(while (not (bolp))
|
||
(if (re-search-backward
|
||
";\\|\\<\\(begin\\|end\\|if\\|else\\|then\\|when\\|otherwise\\|do\\)\\>"
|
||
start-line 'move)
|
||
(if (simula-context)
|
||
();; found something in a comment/string - ignore
|
||
(setq temp (following-char))
|
||
(cond
|
||
((eq temp ?\;)
|
||
(simula-previous-statement 1))
|
||
((looking-at "begin\\>")
|
||
(setq indent (+ indent simula-indent-level)))
|
||
((looking-at "end\\>")
|
||
(forward-word 1)
|
||
(simula-previous-statement 1))
|
||
((looking-at "do\\>")
|
||
(setq indent (+ indent simula-substatement-offset))
|
||
(simula-find-do-match))
|
||
((looking-at "\\(if\\|then\\|else\\)\\>")
|
||
(if (memq temp '(?I ?i))
|
||
(forward-word 1)
|
||
(setq indent (+ indent
|
||
simula-substatement-offset
|
||
(if (memq temp '(?T ?t))
|
||
(car simula-if-indent)
|
||
(cdr simula-if-indent)))))
|
||
(simula-find-if))
|
||
((looking-at "\\<when\\>\\|\\<otherwise\\>")
|
||
(setq indent (+ indent
|
||
simula-substatement-offset
|
||
(if (memq temp '(?W ?w))
|
||
(car simula-if-indent)
|
||
(cdr simula-if-indent))))
|
||
(simula-find-inspect)))
|
||
;; found the start of a [sub]statement
|
||
;; add indentation for continued statement
|
||
(if continued
|
||
(setq indent
|
||
(+ indent
|
||
(if (listp simula-continued-statement-offset)
|
||
(car simula-continued-statement-offset)
|
||
simula-continued-statement-offset))))
|
||
(setq start-line
|
||
(save-excursion (beginning-of-line) (point))
|
||
continued nil))
|
||
;; search failed .. point is at beginning of line
|
||
;; determine if we should continue searching
|
||
;; (at or before comment or label)
|
||
;; temp = t means finished
|
||
(setq temp
|
||
(and (not (simula-context))
|
||
(save-excursion
|
||
(skip-chars-forward " \t\f")
|
||
(or (looking-at "virtual")
|
||
(not
|
||
(looking-at
|
||
"!\\|comment\\>\\|[a-z0-9_]*[ \t\f]*:[^-=]")))))
|
||
prev-cont continued)
|
||
;; if we are finished, find current line's indentation
|
||
(if temp
|
||
(setq indent (+ indent (current-indentation))))
|
||
;; find next line with non-comment SIMULA text
|
||
;; maybe indent extra if statement continues
|
||
(simula-skip-comment-backward)
|
||
(setq continued
|
||
(and (not (bobp))
|
||
(if (eq (char-syntax (preceding-char)) ?w)
|
||
(save-excursion
|
||
(backward-word 1)
|
||
(not (looking-at
|
||
"begin\\|then\\|else\\|when\\|otherwise\\|do")))
|
||
(not (memq (preceding-char) '(?: ?\;))))))
|
||
;; if we the state of the continued-variable
|
||
;; changed, add indentation for continued statement
|
||
(if (or (and prev-cont (not continued))
|
||
(and continued
|
||
(listp simula-continued-statement-offset)))
|
||
(setq indent
|
||
(+ indent
|
||
(if (listp simula-continued-statement-offset)
|
||
(car simula-continued-statement-offset)
|
||
simula-continued-statement-offset))))
|
||
;; while ends if point is at beginning of line at loop test
|
||
(if (not temp)
|
||
(setq start-line (save-excursion (beginning-of-line) (point)))
|
||
(beginning-of-line))))
|
||
;;
|
||
;; return indentation
|
||
;;
|
||
indent)))))
|
||
|
||
|
||
(defun simula-find-if ()
|
||
"Find starting IF of a IF-THEN[-ELSE[-IF-THEN...]] statement."
|
||
(catch 'simula-out
|
||
(while t
|
||
(if (and (simula-search-backward "\\<if\\>\\|;\\|\\<begin\\>"nil t)
|
||
(memq (following-char) '(?I ?i)))
|
||
(save-excursion
|
||
;;
|
||
;; find out if this IF was really the start of the IF statement
|
||
;;
|
||
(simula-skip-comment-backward)
|
||
(if (and (eq (char-syntax (preceding-char)) ?w)
|
||
(progn
|
||
(backward-word 1)
|
||
(looking-at "else\\>")))
|
||
()
|
||
(throw 'simula-out t)))
|
||
(if (not (looking-at "\\<if\\>"))
|
||
(error "Missing IF or misplaced BEGIN or ';' (can't find IF)")
|
||
;;
|
||
;; we were at the starting IF in the first place..
|
||
;;
|
||
(throw 'simula-out t))))))
|
||
|
||
|
||
(defun simula-find-inspect ()
|
||
"Find INSPECT matching WHEN or OTHERWISE."
|
||
(catch 'simula-out
|
||
(let ((level 0))
|
||
;;
|
||
;; INSPECTs can be nested, have to find the corresponding one
|
||
;;
|
||
(while t
|
||
(if (and (simula-search-backward "\\<inspect\\>\\|\\<otherwise\\>\\|;"
|
||
nil t)
|
||
(/= (following-char) ?\;))
|
||
(if (memq (following-char) '(?O ?o))
|
||
(setq level (1+ level))
|
||
(if (zerop level)
|
||
(throw 'simula-out t)
|
||
(setq level (1- level))))
|
||
(error "Missing INSPECT or misplaced ';' (can't find INSPECT)"))))))
|
||
|
||
|
||
(defun simula-find-do-match ()
|
||
"Find keyword matching DO: FOR, WHILE, INSPECT or WHEN"
|
||
(while (and (re-search-backward
|
||
"\\<\\(do\\|for\\|while\\|inspect\\|when\\|end\\|begin\\)\\>\\|;"
|
||
nil 'move)
|
||
(simula-context)))
|
||
(if (and (looking-at "\\<\\(for\\|while\\|inspect\\|when\\)\\>")
|
||
(not (simula-context)))
|
||
() ;; found match
|
||
(error "No matching FOR, WHILE or INSPECT for DO, or misplaced ';'")))
|
||
|
||
|
||
(defun simula-inside-parens ()
|
||
"Return position after `(' on line if inside parentheses, nil otherwise."
|
||
(save-excursion
|
||
(let ((parlevel 0))
|
||
(catch 'simula-out
|
||
(while t
|
||
(if (re-search-backward "(\\|)\\|;" nil t)
|
||
(if (eq (simula-context) nil)
|
||
;; found something - check it out
|
||
(cond
|
||
((eq (following-char) ?\;)
|
||
(if (zerop parlevel)
|
||
(throw 'simula-out nil)
|
||
(error "Parenthesis mismatch or misplaced ';'")))
|
||
((eq (following-char) ?\()
|
||
(if (zerop parlevel)
|
||
(throw 'simula-out (1+ (current-column)))
|
||
(setq parlevel (1- parlevel))))
|
||
(t (setq parlevel (1+ parlevel))))
|
||
);; nothing - inside comment or string
|
||
;; search failed
|
||
(throw 'simula-out nil)))))))
|
||
|
||
|
||
(defun simula-goto-definition ()
|
||
"Goto point of definition of variable, procedure or class."
|
||
(interactive))
|
||
|
||
|
||
(defun simula-expand-stdproc ()
|
||
(if (or (not simula-abbrev-stdproc) (simula-context))
|
||
(unexpand-abbrev)
|
||
(cond
|
||
((eq simula-abbrev-stdproc 'upcase) (upcase-word -1))
|
||
((eq simula-abbrev-stdproc 'downcase) (downcase-word -1))
|
||
((eq simula-abbrev-stdproc 'capitalize) (capitalize-word -1))
|
||
((eq simula-abbrev-stdproc 'abbrev-table)
|
||
;; If not in lowercase, expansions are always capitalized.
|
||
;; We then want to replace with the exact expansion.
|
||
(if (equal (symbol-name last-abbrev) last-abbrev-text)
|
||
()
|
||
(downcase-word -1)
|
||
(expand-abbrev))))))
|
||
|
||
|
||
(defun simula-expand-keyword ()
|
||
(if (or (not simula-abbrev-keyword) (simula-context))
|
||
(unexpand-abbrev)
|
||
(cond
|
||
((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
|
||
((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
|
||
((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1))
|
||
((eq simula-abbrev-stdproc 'abbrev-table)
|
||
(if (equal (symbol-name last-abbrev) last-abbrev-text)
|
||
()
|
||
(downcase-word -1)
|
||
(expand-abbrev))))))
|
||
|
||
|
||
(defun simula-electric-keyword ()
|
||
"Expand SIMULA keyword. If it starts the line, reindent."
|
||
;; redisplay
|
||
(let ((show-char (eq this-command 'self-insert-command)))
|
||
;; If the abbrev expansion results in reindentation, the user may have
|
||
;; to wait some time before the character he typed is displayed
|
||
;; (the char causing the expansion is inserted AFTER the hook function
|
||
;; is called). This is annoying in case of normal characters.
|
||
;; However, if the user pressed a key bound to newline, it is better
|
||
;; to have the line inserted after the begin-end match.
|
||
(if show-char
|
||
(progn
|
||
(insert-char last-command-char 1)
|
||
(sit-for 0)
|
||
(backward-char 1)))
|
||
(if (let ((where (simula-context))
|
||
(case-fold-search t))
|
||
(if where
|
||
(if (and (eq where 2) (eq (char-syntax (preceding-char)) ?w))
|
||
(save-excursion
|
||
(backward-word 1)
|
||
(not (looking-at "end\\>"))))))
|
||
(unexpand-abbrev)
|
||
(cond
|
||
((not simula-abbrev-keyword) (unexpand-abbrev))
|
||
((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
|
||
((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
|
||
((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1)))
|
||
(let ((pos (- (point-max) (point)))
|
||
(case-fold-search t)
|
||
null)
|
||
(condition-case null
|
||
(progn
|
||
;; check if the expanded word is on the beginning of the line.
|
||
(if (and (eq (char-syntax (preceding-char)) ?w)
|
||
(progn
|
||
(backward-word 1)
|
||
(if (looking-at "end\\>")
|
||
(save-excursion
|
||
(simula-backward-up-level 1)
|
||
(if (pos-visible-in-window-p)
|
||
(sit-for 1)
|
||
(message "Matches %s"
|
||
(buffer-substring
|
||
(point)
|
||
(+ (point) (window-width)))))))
|
||
(skip-chars-backward " \t\f")
|
||
(bolp)))
|
||
(let ((indent (simula-calculate-indent)))
|
||
(if (eq indent (current-indentation))
|
||
()
|
||
(delete-horizontal-space)
|
||
(indent-to indent)))
|
||
(skip-chars-forward " \t\f"))
|
||
;; check for END - blow whistles and ring bells
|
||
|
||
(goto-char (- (point-max) pos))
|
||
(if show-char
|
||
(delete-char 1)))
|
||
(quit (goto-char (- (point-max) pos))))))))
|
||
|
||
|
||
(defun simula-search-backward (regexp &optional bound noerror)
|
||
"Search backward from point for regular expression REGEXP, ignoring matches
|
||
found inside SIMULA comments, string literals, and BEGIN..END blocks.
|
||
Set point to the end of the occurrence found, and return point.
|
||
An optional second argument BOUND bounds the search, it is a buffer position.
|
||
The match found must not extend after that position. Optional third argument
|
||
NOERROR, if t, means if fail just return nil (no error).
|
||
If not nil and not t, move to limit of search and return nil."
|
||
(let (begin end context (comb-regexp (concat regexp "\\|\\<end\\>"))
|
||
match (start-point (point)))
|
||
(catch 'simula-backward
|
||
(while (re-search-backward comb-regexp bound 1)
|
||
;; We have a match, check SIMULA context at match-beginning
|
||
;; to see if we are outside comments etc.
|
||
;; Set MATCH to t if we found a true match,
|
||
;; set MATCH to 'BLOCK if we found a BEGIN..END block,
|
||
;; else set MATCH to nil.
|
||
(save-match-data
|
||
(setq context (simula-context))
|
||
(cond
|
||
((eq context nil)
|
||
(setq match (if (looking-at regexp) t 'BLOCK)))
|
||
;;; A comment-ending semicolon is part of the comment, and shouldn't match.
|
||
;;; ((eq context 0)
|
||
;;; (setq match (if (eq (following-char) ?\;) t nil)))
|
||
((eq context 2)
|
||
(setq match (if (and (looking-at regexp)
|
||
(looking-at ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>"))
|
||
t
|
||
(if (looking-at "\\<end\\>") 'BLOCK nil))))
|
||
(t (setq match nil))))
|
||
;; Exit if true match
|
||
(if (eq match t) (throw 'simula-backward (point)))
|
||
(if (eq match 'BLOCK)
|
||
;; We found the END of a block
|
||
(let ((level 0))
|
||
(while (natnump level)
|
||
(if (re-search-backward "\\<begin\\>\\|\\<end\\>" bound 1)
|
||
(let ((context (simula-context)))
|
||
;; We found a BEGIN -> decrease level count
|
||
(cond ((and (eq context nil)
|
||
(memq (following-char) '(?b ?B)))
|
||
(setq level (1- level)))
|
||
;; END -> increase level count
|
||
((and (memq context '(nil 2))
|
||
(memq (following-char) '(?e ?E)))
|
||
(setq level (1+ level)))))
|
||
;; Block search failed. Action depends on noerror.
|
||
(if (or (not noerror) (eq noerror t))
|
||
(goto-char start-point))
|
||
(if (not noerror)
|
||
(signal 'search-failed (list regexp)))
|
||
(throw 'simula-backward nil))))))
|
||
;; Search failed. Action depends on noerror.
|
||
(if (or (not noerror) (eq noerror t))
|
||
(goto-char start-point))
|
||
(if noerror
|
||
nil
|
||
(signal 'search-failed (list regexp))))))
|
||
|
||
|
||
(defun simula-search-forward (regexp &optional bound noerror)
|
||
"Search forward from point for regular expression REGEXP, ignoring matches
|
||
found inside SIMULA comments, string literals, and BEGIN..END blocks.
|
||
Set point to the end of the occurrence found, and return point.
|
||
An optional second argument BOUND bounds the search, it is a buffer position.
|
||
The match found must not extend after that position. Optional third argument
|
||
NOERROR, if t, means if fail just return nil (no error).
|
||
If not nil and not t, move to limit of search and return nil."
|
||
(let (begin end context (comb-regexp (concat regexp "\\|\\<begin\\>"))
|
||
match (start-point (point)))
|
||
(catch 'simula-forward
|
||
(while (re-search-forward comb-regexp bound 1)
|
||
;; We have a match, check SIMULA context at match-beginning
|
||
;; to see if we are outside comments.
|
||
;; Set MATCH to t if we found a true match,
|
||
;; set MATCH to 'BLOCK if we found a BEGIN..END block,
|
||
;; else set MATCH to nil.
|
||
(save-match-data
|
||
(save-excursion
|
||
(goto-char (match-beginning 0))
|
||
(setq context (simula-context))
|
||
(cond
|
||
((not context)
|
||
(setq match (if (looking-at regexp) t 'BLOCK)))
|
||
;;; A comment-ending semicolon is part of the comment, and shouldn't match.
|
||
;;; ((eq context 0)
|
||
;;; (setq match (if (eq (following-char) ?\;) t nil)))
|
||
((eq context 2)
|
||
(setq match (if (and (looking-at regexp)
|
||
(looking-at ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>")) t nil)))
|
||
(t (setq match nil)))))
|
||
;; Exit if true match
|
||
(if (eq match t) (throw 'simula-forward (point)))
|
||
(if (eq match 'BLOCK)
|
||
;; We found the BEGINning of a block
|
||
(let ((level 0))
|
||
(while (natnump level)
|
||
(if (re-search-forward "\\<begin\\>\\|\\<end\\>" bound 1)
|
||
(let ((context (simula-context)))
|
||
;; We found a BEGIN -> increase level count
|
||
(cond ((eq context nil) (setq level (1+ level)))
|
||
;; END -> decrease level count
|
||
((and (eq context 2)
|
||
;; Don't match BEGIN inside END comment
|
||
(memq (preceding-char) '(?d ?D)))
|
||
(setq level (1- level)))))
|
||
;; Block search failed. Action depends on noerror.
|
||
(if (or (not noerror) (eq noerror t))
|
||
(goto-char start-point))
|
||
(if (not noerror)
|
||
(signal 'search-failed (list regexp)))
|
||
(throw 'simula-forward nil))))))
|
||
;; Search failed. Action depends on noerror.
|
||
(if (or (not noerror) (eq noerror t))
|
||
(goto-char start-point))
|
||
(if noerror
|
||
nil
|
||
(signal 'search-failed (list regexp))))))
|
||
|
||
|
||
(defun simula-install-standard-abbrevs ()
|
||
"Define Simula keywords, procedures and classes in local abbrev table."
|
||
;; procedure and class names are as of the SIMULA 87 standard.
|
||
(interactive)
|
||
(mapcar (function (lambda (args)
|
||
(apply 'define-abbrev simula-mode-abbrev-table args)))
|
||
'(("abs" "Abs" simula-expand-stdproc)
|
||
("accum" "Accum" simula-expand-stdproc)
|
||
("activate" "ACTIVATE" simula-expand-keyword)
|
||
("addepsilon" "AddEpsilon" simula-expand-stdproc)
|
||
("after" "AFTER" simula-expand-keyword)
|
||
("and" "AND" simula-expand-keyword)
|
||
("arccos" "ArcCos" simula-expand-stdproc)
|
||
("arcsin" "ArcSin" simula-expand-stdproc)
|
||
("arctan" "ArcTan" simula-expand-stdproc)
|
||
("arctan2" "ArcTan2" simula-expand-stdproc)
|
||
("array" "ARRAY" simula-expand-keyword)
|
||
("at" "AT" simula-expand-keyword)
|
||
("before" "BEFORE" simula-expand-keyword)
|
||
("begin" "BEGIN" simula-expand-keyword)
|
||
("blanks" "Blanks" simula-expand-stdproc)
|
||
("boolean" "BOOLEAN" simula-expand-keyword)
|
||
("breakoutimage" "BreakOutImage" simula-expand-stdproc)
|
||
("bytefile" "ByteFile" simula-expand-stdproc)
|
||
("call" "Call" simula-expand-stdproc)
|
||
("cancel" "Cancel" simula-expand-stdproc)
|
||
("cardinal" "Cardinal" simula-expand-stdproc)
|
||
("char" "Char" simula-expand-stdproc)
|
||
("character" "CHARACTER" simula-expand-keyword)
|
||
("checkpoint" "CheckPoint" simula-expand-stdproc)
|
||
("class" "CLASS" simula-expand-keyword)
|
||
("clear" "Clear" simula-expand-stdproc)
|
||
("clocktime" "ClockTime" simula-expand-stdproc)
|
||
("close" "Close" simula-expand-stdproc)
|
||
("comment" "COMMENT" simula-expand-keyword)
|
||
("constant" "Constant" simula-expand-stdproc)
|
||
("copy" "Copy" simula-expand-stdproc)
|
||
("cos" "Cos" simula-expand-stdproc)
|
||
("cosh" "CosH" simula-expand-stdproc)
|
||
("cotan" "CoTan" simula-expand-stdproc)
|
||
("cputime" "CpuTime" simula-expand-stdproc)
|
||
("current" "Current" simula-expand-stdproc)
|
||
("datetime" "DateTime" simula-expand-stdproc)
|
||
("decimalmark" "DecimalMark" simula-expand-stdproc)
|
||
("delay" "DELAY" simula-expand-keyword)
|
||
("deleteimage" "DeleteImage" simula-expand-stdproc)
|
||
("detach" "Detach" simula-expand-stdproc)
|
||
("digit" "Digit" simula-expand-stdproc)
|
||
("directbytefile" "DirectByteFile" simula-expand-stdproc)
|
||
("directfile" "DirectFile" simula-expand-stdproc)
|
||
("discrete" "Discrete" simula-expand-stdproc)
|
||
("do" "DO" simula-expand-keyword)
|
||
("downcase" "Downcase" simula-expand-stdproc)
|
||
("draw" "Draw" simula-expand-stdproc)
|
||
("eject" "Eject" simula-expand-stdproc)
|
||
("else" "ELSE" simula-electric-keyword)
|
||
("empty" "Empty" simula-expand-stdproc)
|
||
("end" "END" simula-electric-keyword)
|
||
("endfile" "Endfile" simula-expand-stdproc)
|
||
("entier" "Entier" simula-expand-stdproc)
|
||
("eq" "EQ" simula-expand-keyword)
|
||
("eqv" "EQV" simula-expand-keyword)
|
||
("erlang" "Erlang" simula-expand-stdproc)
|
||
("error" "Error" simula-expand-stdproc)
|
||
("evtime" "EvTime" simula-expand-stdproc)
|
||
("exp" "Exp" simula-expand-stdproc)
|
||
("external" "EXTERNAL" simula-expand-keyword)
|
||
("false" "FALSE" simula-expand-keyword)
|
||
("field" "Field" simula-expand-stdproc)
|
||
("file" "File" simula-expand-stdproc)
|
||
("first" "First" simula-expand-stdproc)
|
||
("follow" "Follow" simula-expand-stdproc)
|
||
("for" "FOR" simula-expand-keyword)
|
||
("ge" "GE" simula-expand-keyword)
|
||
("getchar" "GetChar" simula-expand-stdproc)
|
||
("getfrac" "GetFrac" simula-expand-stdproc)
|
||
("getint" "GetInt" simula-expand-stdproc)
|
||
("getreal" "GetReal" simula-expand-stdproc)
|
||
("go" "GO" simula-expand-keyword)
|
||
("goto" "GOTO" simula-expand-keyword)
|
||
("gt" "GT" simula-expand-keyword)
|
||
("head" "Head" simula-expand-stdproc)
|
||
("hidden" "HIDDEN" simula-expand-keyword)
|
||
("histd" "HistD" simula-expand-stdproc)
|
||
("histo" "Histo" simula-expand-stdproc)
|
||
("hold" "Hold" simula-expand-stdproc)
|
||
("idle" "Idle" simula-expand-stdproc)
|
||
("if" "IF" simula-expand-keyword)
|
||
("image" "Image" simula-expand-stdproc)
|
||
("imagefile" "ImageFile" simula-expand-stdproc)
|
||
("imp" "IMP" simula-expand-keyword)
|
||
("in" "IN" simula-expand-keyword)
|
||
("inbyte" "InByte" simula-expand-stdproc)
|
||
("inbytefile" "InByteFile" simula-expand-stdproc)
|
||
("inchar" "InChar" simula-expand-stdproc)
|
||
("infile" "InFile" simula-expand-stdproc)
|
||
("infrac" "InFrac" simula-expand-stdproc)
|
||
("inimage" "InImage" simula-expand-stdproc)
|
||
("inint" "InInt" simula-expand-stdproc)
|
||
("inner" "INNER" simula-expand-keyword)
|
||
("inreal" "InReal" simula-expand-stdproc)
|
||
("inrecord" "InRecord" simula-expand-stdproc)
|
||
("inspect" "INSPECT" simula-expand-keyword)
|
||
("integer" "INTEGER" simula-expand-keyword)
|
||
("intext" "InText" simula-expand-stdproc)
|
||
("into" "Into" simula-expand-stdproc)
|
||
("is" "IS" simula-expand-keyword)
|
||
("isochar" "ISOChar" simula-expand-stdproc)
|
||
("isopen" "IsOpen" simula-expand-stdproc)
|
||
("isorank" "ISORank" simula-expand-stdproc)
|
||
("label" "LABEL" simula-expand-keyword)
|
||
("last" "Last" simula-expand-stdproc)
|
||
("lastitem" "LastItem" simula-expand-stdproc)
|
||
("lastloc" "LastLoc" simula-expand-stdproc)
|
||
("le" "LE" simula-expand-keyword)
|
||
("length" "Length" simula-expand-stdproc)
|
||
("letter" "Letter" simula-expand-stdproc)
|
||
("line" "Line" simula-expand-stdproc)
|
||
("linear" "Linear" simula-expand-stdproc)
|
||
("linesperpage" "LinesPerPage" simula-expand-stdproc)
|
||
("link" "Link" simula-expand-stdproc)
|
||
("linkage" "Linkage" simula-expand-stdproc)
|
||
("ln" "Ln" simula-expand-stdproc)
|
||
("locate" "Locate" simula-expand-stdproc)
|
||
("location" "Location" simula-expand-stdproc)
|
||
("lock" "Lock" simula-expand-stdproc)
|
||
("locked" "Locked" simula-expand-stdproc)
|
||
("log10" "Log10" simula-expand-stdproc)
|
||
("long" "LONG" simula-expand-keyword)
|
||
("lowcase" "LowCase" simula-expand-stdproc)
|
||
("lowerbound" "LowerBound" simula-expand-stdproc)
|
||
("lowten" "LowTen" simula-expand-stdproc)
|
||
("lt" "LT" simula-expand-keyword)
|
||
("main" "Main" simula-expand-stdproc)
|
||
("max" "Max" simula-expand-stdproc)
|
||
("maxint" "MaxInt" simula-expand-stdproc)
|
||
("maxlongreal" "MaxLongReal" simula-expand-stdproc)
|
||
("maxloc" "MaxLoc" simula-expand-stdproc)
|
||
("maxrank" "MaxRank" simula-expand-stdproc)
|
||
("maxreal" "MaxReal" simula-expand-stdproc)
|
||
("min" "Min" simula-expand-stdproc)
|
||
("minint" "MinInt" simula-expand-stdproc)
|
||
("minlongreal" "MinLongReal" simula-expand-stdproc)
|
||
("minrank" "MinRank" simula-expand-stdproc)
|
||
("minreal" "MinReal" simula-expand-stdproc)
|
||
("mod" "Mod" simula-expand-stdproc)
|
||
("more" "More" simula-expand-stdproc)
|
||
("name" "NAME" simula-expand-keyword)
|
||
("ne" "NE" simula-expand-keyword)
|
||
("negexp" "NegExp" simula-expand-stdproc)
|
||
("new" "NEW" simula-expand-keyword)
|
||
("nextev" "NextEv" simula-expand-stdproc)
|
||
("none" "NONE" simula-expand-keyword)
|
||
("normal" "Normal" simula-expand-stdproc)
|
||
("not" "NOT" simula-expand-keyword)
|
||
("notext" "NOTEXT" simula-expand-keyword)
|
||
("open" "Open" simula-expand-stdproc)
|
||
("or" "OR" simula-expand-keyword)
|
||
("otherwise" "OTHERWISE" simula-electric-keyword)
|
||
("out" "Out" simula-expand-stdproc)
|
||
("outbyte" "OutByte" simula-expand-stdproc)
|
||
("outbytefile" "OutByteFile" simula-expand-stdproc)
|
||
("outchar" "OutChar" simula-expand-stdproc)
|
||
("outfile" "OutFile" simula-expand-stdproc)
|
||
("outfix" "OutFix" simula-expand-stdproc)
|
||
("outfrac" "OutFrac" simula-expand-stdproc)
|
||
("outimage" "OutImage" simula-expand-stdproc)
|
||
("outint" "OutInt" simula-expand-stdproc)
|
||
("outreal" "OutReal" simula-expand-stdproc)
|
||
("outrecord" "OutRecord" simula-expand-stdproc)
|
||
("outtext" "OutText" simula-expand-stdproc)
|
||
("page" "Page" simula-expand-stdproc)
|
||
("passivate" "Passivate" simula-expand-stdproc)
|
||
("poisson" "Poisson" simula-expand-stdproc)
|
||
("pos" "Pos" simula-expand-stdproc)
|
||
("precede" "Precede" simula-expand-stdproc)
|
||
("pred" "Pred" simula-expand-stdproc)
|
||
("prev" "Prev" simula-expand-stdproc)
|
||
("printfile" "PrintFile" simula-expand-stdproc)
|
||
("prior" "PRIOR" simula-expand-keyword)
|
||
("procedure" "PROCEDURE" simula-expand-keyword)
|
||
("process" "Process" simula-expand-stdproc)
|
||
("protected" "PROTECTED" simula-expand-keyword)
|
||
("putchar" "PutChar" simula-expand-stdproc)
|
||
("putfix" "PutFix" simula-expand-stdproc)
|
||
("putfrac" "PutFrac" simula-expand-stdproc)
|
||
("putint" "PutInt" simula-expand-stdproc)
|
||
("putreal" "PutReal" simula-expand-stdproc)
|
||
("qua" "QUA" simula-expand-keyword)
|
||
("randint" "RandInt" simula-expand-stdproc)
|
||
("rank" "Rank" simula-expand-stdproc)
|
||
("reactivate" "REACTIVATE" simula-expand-keyword)
|
||
("real" "REAL" simula-expand-keyword)
|
||
("ref" "REF" simula-expand-keyword)
|
||
("resume" "Resume" simula-expand-stdproc)
|
||
("setaccess" "SetAccess" simula-expand-stdproc)
|
||
("setpos" "SetPos" simula-expand-stdproc)
|
||
("short" "SHORT" simula-expand-keyword)
|
||
("sign" "Sign" simula-expand-stdproc)
|
||
("simset" "SimSet" simula-expand-stdproc)
|
||
("simulaid" "SimulaId" simula-expand-stdproc)
|
||
("simulation" "Simulation" simula-expand-stdproc)
|
||
("sin" "Sin" simula-expand-stdproc)
|
||
("sinh" "SinH" simula-expand-stdproc)
|
||
("sourceline" "SourceLine" simula-expand-stdproc)
|
||
("spacing" "Spacing" simula-expand-stdproc)
|
||
("sqrt" "Sqrt" simula-expand-stdproc)
|
||
("start" "Start" simula-expand-stdproc)
|
||
("step" "STEP" simula-expand-keyword)
|
||
("strip" "Strip" simula-expand-stdproc)
|
||
("sub" "Sub" simula-expand-stdproc)
|
||
("subepsilon" "SubEpsilon" simula-expand-stdproc)
|
||
("suc" "Suc" simula-expand-stdproc)
|
||
("switch" "SWITCH" simula-expand-keyword)
|
||
("sysin" "SysIn" simula-expand-stdproc)
|
||
("sysout" "SysOut" simula-expand-stdproc)
|
||
("tan" "Tan" simula-expand-stdproc)
|
||
("tanh" "TanH" simula-expand-stdproc)
|
||
("terminate_program" "Terminate_Program" simula-expand-stdproc)
|
||
("terminated" "Terminated" simula-expand-stdproc)
|
||
("text" "TEXT" simula-expand-keyword)
|
||
("then" "THEN" simula-electric-keyword)
|
||
("this" "THIS" simula-expand-keyword)
|
||
("time" "Time" simula-expand-stdproc)
|
||
("to" "TO" simula-expand-keyword)
|
||
("true" "TRUE" simula-expand-keyword)
|
||
("uniform" "Uniform" simula-expand-stdproc)
|
||
("unlock" "Unlock" simula-expand-stdproc)
|
||
("until" "UNTIL" simula-expand-keyword)
|
||
("upcase" "Upcase" simula-expand-stdproc)
|
||
("upperbound" "UpperBound" simula-expand-stdproc)
|
||
("value" "VALUE" simula-expand-keyword)
|
||
("virtual" "VIRTUAL" simula-expand-keyword)
|
||
("wait" "Wait" simula-expand-stdproc)
|
||
("when" "WHEN" simula-electric-keyword)
|
||
("while" "WHILE" simula-expand-keyword))))
|
||
|
||
;;; Font Lock mode support.
|
||
(eval-when-compile
|
||
(require 'cl))
|
||
|
||
;; SIMULA comments and strings are a mess. If we rely on the syntax table,
|
||
;; then %-comments may be shown incorrectly (and prematurely) ended by a
|
||
;; semicolon, !-comments by a newline and '-strings may screw up the rest of
|
||
;; the buffer. And of course we can't do comment- or end-comments using the
|
||
;; syntax table. We can do everything except end-comments in one fast regexp,
|
||
;; but we aught to do end-comments too, so we need a function. simon@gnu.
|
||
(defun simula-match-string-or-comment (limit)
|
||
;; Return t if there is a string or comment before LIMIT.
|
||
;; Matches buffer text so that if (match-string 1) is non-nil, it is the
|
||
;; string. Otherwise, (match-string 0) is non-nil, and is the comment.
|
||
(when (re-search-forward
|
||
(eval-when-compile
|
||
(concat "\\(\"[^\"\n]*\"\\|'\\(.\\|![0-9]+!\\)'\\)\\|"
|
||
"\\(\\<end[ \t\n]+\\)\\|"
|
||
"^%[ \t].*\\|\\(!\\|\\<comment\\>\\)[^;]*;?"))
|
||
limit t)
|
||
(when (match-beginning 3)
|
||
;; We've matched an end-comment. Yuck. Find the extent of it.
|
||
(store-match-data
|
||
(list (point)
|
||
(if (re-search-forward "\\<\\(end\\|else\\|when\\|otherwise\\)\\>\\|;"
|
||
limit 'move)
|
||
(match-beginning 0)
|
||
(point)))))
|
||
t))
|
||
|
||
;;; Hilit mode support.
|
||
(if (and (fboundp 'hilit-set-mode-patterns)
|
||
(boundp 'hilit-patterns-alist)
|
||
(not (assoc 'simula-mode hilit-patterns-alist)))
|
||
(hilit-set-mode-patterns
|
||
'simula-mode
|
||
'(
|
||
("^%\\([ \t\f].*\\)?$" nil comment)
|
||
("^%include\\>" nil include)
|
||
("\"[^\"\n]*\"\\|'.'\\|'![0-9]+!'" nil string)
|
||
("\\<\\(ACTIVATE\\|AFTER\\|AND\\|ARRAY\\|AT\\|BEFORE\\|BEGIN\\|BOOLEAN\\|CHARACTER\\|CLASS\\|DELAY\\|DO\\|ELSE\\|END\\|EQ\\|EQV\\|EXTERNAL\\|FALSE\\|FOR\\|GE\\|GO\\|GOTO\\|GT\\|HIDDEN\\|IF\\|IMP\\|IN\\|INNER\\|INSPECT\\|INTEGER\\|IS\\|LABEL\\|LE\\|LONG\\|LT\\|NAME\\|NE\\|NEW\\|NONE\\|NOT\\|NOTEXT\\|OR\\|OTHERWISE\\|PRIOR\\|PROCEDURE\\|PROTECTED\\|QUA\\|REACTIVATE\\|REAL\\|REF\\|SHORT\\|STEP\\|SWITCH\\|TEXT\\|THEN\\|THIS\\|TO\\|TRUE\\|UNTIL\\|VALUE\\|VIRTUAL\\|WHEN\\|WHILE\\)\\>" nil keyword)
|
||
("!\\|\\<COMMENT\\>" ";" comment))
|
||
nil 'case-insensitive))
|
||
|
||
;; None of this seems to be used by anything, including hilit19.el. simon@gnu.
|
||
;(setq simula-find-comment-point -1
|
||
; simula-find-comment-context nil)
|
||
;
|
||
;;; function used by hilit19
|
||
;(defun simula-find-next-comment-region (param)
|
||
; "Return region (start end) cons of comment after point, or NIL"
|
||
; (let (start end)
|
||
; ;; This function is called repeatedly, check if point is
|
||
; ;; where we left it in the last call
|
||
; (if (not (eq simula-find-comment-point (point)))
|
||
; (setq simula-find-comment-point (point)
|
||
; simula-find-comment-context (simula-context)))
|
||
; ;; loop as long as we haven't found the end of a comment
|
||
; (if (memq simula-find-comment-context '(0 1 2))
|
||
; (setq start (point))
|
||
; (if (re-search-forward "\\<end\\>\\|!\\|\"\\|'\\|^%\\|\\<comment\\>"
|
||
; nil 'move)
|
||
; (let ((previous-char (preceding-char)))
|
||
; (cond
|
||
; ((memq previous-char '(?d ?D))
|
||
; (setq start (point)
|
||
; simula-find-comment-context 2))
|
||
; ((memq previous-char '(?t ?T ?\!))
|
||
; (setq start (point)
|
||
; simula-find-comment-context 0))
|
||
; ((eq previous-char ?%)
|
||
; (setq start (point)
|
||
; simula-find-comment-context 0))))))
|
||
; ;; BUG: the following (0 2) branches don't take into account intermixing
|
||
; ;; directive lines
|
||
; (cond
|
||
; ((eq simula-find-comment-context 0)
|
||
; (search-forward ";" nil 'move))
|
||
; ((eq simula-find-comment-context 1)
|
||
; (beginning-of-line 2))
|
||
; ((eq simula-find-comment-context 2)
|
||
; (re-search-forward ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>\\" (point-max) 'move)))
|
||
; (if start
|
||
; (setq end (point)))
|
||
; ;; save point for later calls to this function
|
||
; (setq simula-find-comment-point (if end (point) -1))
|
||
; (and end (cons start end))))
|
||
|
||
;; defuns for submitting bug reports
|
||
|
||
(defconst simula-mode-help-address "simula-mode@ifi.uio.no"
|
||
"Address accepting submission of simula-mode bug reports.")
|
||
|
||
(defun simula-submit-bug-report ()
|
||
"Submit via mail a bug report on simula-mode."
|
||
(interactive)
|
||
(and
|
||
(y-or-n-p "Do you want to submit a report on simula-mode? ")
|
||
(reporter-submit-bug-report
|
||
simula-mode-help-address
|
||
(concat "simula-mode from Emacs " emacs-version)
|
||
(list
|
||
;; report only the vars that affect indentation
|
||
'simula-emacs-features
|
||
'simula-indent-level
|
||
'simula-substatement-offset
|
||
'simula-continued-statement-offset
|
||
'simula-label-offset
|
||
'simula-if-indent
|
||
'simula-inspect-indent
|
||
'simula-electric-indent
|
||
'simula-abbrev-keyword
|
||
'simula-abbrev-stdproc
|
||
'simula-abbrev-file
|
||
'simula-tab-always-indent
|
||
))))
|
||
|
||
(provide 'simula-mode)
|
||
|
||
;;; simula.el ends here
|