home *** CD-ROM | disk | FTP | other *** search
- ;;!emacs
- ;;
- ;; FILE: br-smt.el
- ;; SUMMARY: Support routines for Smalltalk inheritance browsing and error parsing.
- ;; USAGE: GNU Emacs Lisp Library
- ;; KEYWORDS: oop, tools
- ;;
- ;; AUTHOR: Bob Weiner
- ;; ORG: Motorola Inc.
- ;;
- ;; ORIG-DATE: 26-Jul-90
- ;; LAST-MOD: 3-May-95 at 17:15:10 by Bob Weiner
- ;;
- ;; Copyright (C) 1990-1995 Free Software Foundation, Inc.
- ;; See the file BR-COPY for license information.
- ;;
- ;; This file is part of the OO-Browser.
- ;;
- ;; DESCRIPTION:
- ;;
- ;; See 'smt-class-def-regexp' for regular expression that matches class
- ;; definitions.
- ;;
- ;; DESCRIP-END.
-
- ;;; ************************************************************************
- ;;; Other required Elisp libraries
- ;;; ************************************************************************
-
- (require 'br-lib)
-
- ;;; ************************************************************************
- ;;; User visible variables
- ;;; ************************************************************************
-
- (defvar smt-lib-search-dirs nil
- "List of directories below which Smalltalk Library source files are found.
- Subdirectories of Library source are also searched. A Library is a stable
- group of classes.")
-
- (defvar smt-sys-search-dirs nil
- "List of directories below which Smalltalk System source files are found.
- Subdirectories of System source are also searched. A System class is one
- that is not yet reusable and is likely to change before release.")
-
- (defconst smt-narrow-view-to-class nil
- "*Non-nil means narrow buffer to just the matching class definition when displayed.")
-
- ;;; ************************************************************************
- ;;; Internal functions
- ;;; ************************************************************************
-
- (defun smt-get-classes-from-source (filename &rest ignore)
- "Scans FILENAME and returns cons of class list with parents-class alist.
- Handles multiple inheritance. Assumes file existence and readability have
- already been checked."
- (let ((no-kill (get-file-buffer filename))
- classes class parents parent-cons)
- (if no-kill
- (set-buffer no-kill)
- (funcall br-view-file-function filename))
- (save-restriction
- (save-excursion
- (widen)
- (goto-char (point-min))
- (while (re-search-forward smt-class-def-regexp nil t)
- (setq class (buffer-substring (match-beginning 3) (match-end 3))
- parent-cons
- (cons
- (and (match-end 1) (> (match-end 1) 0)
- (list (buffer-substring
- (match-beginning 1)
- (match-end 1))))
- class))
- ;; Assume class name not found within a comment.
- (setq classes (cons class classes)
- parents (cons parent-cons parents)))))
- (or no-kill (kill-buffer (current-buffer)))
- (cons classes (delq nil parents))))
-
- (defun smt-get-parents-from-source (filename class-name)
- "Scan source in FILENAME and return list of parents of CLASS-NAME.
- Assume file existence has already been checked."
- (or (null class-name)
- (let ((br-view-file-function 'br-insert-file-contents))
- (car (car (br-rassoc
- class-name
- (cdr (smt-get-classes-from-source filename))))))))
-
- (defun smt-select-path (paths-htable-elt &optional feature-p)
- "Select proper pathname from PATHS-HTABLE-ELT based upon value of optional FEATURE-P.
- Selection is between path of class definition and path for features associated
- with the class."
- (cdr paths-htable-elt))
-
- (defun smt-set-case (type)
- "Return string TYPE identifier for use as a class name."
- type)
-
- (defun smt-set-case-type (class-name)
- "Return string CLASS-NAME for use as a type identifier."
- class-name)
-
- (defun smt-to-class-end ()
- "Assuming point is at start of class, move to best guess start of line after end of class."
- (interactive)
- (goto-char (point-max)))
-
- (defun smt-to-comments-begin ()
- "Skip back from current point past any preceding Smalltalk comments.
- Presently a no-op."
- )
-
- ;;; ************************************************************************
- ;;; Internal variables
- ;;; ************************************************************************
-
- (defconst smt-type-tag-separator "@"
- "String that separates a tag's type from its normalized definition form.
- This should be a single character which is unchanged when quoted for use as a
- literal in a regular expression.")
-
- (defconst smt-subclass-separator
- "\\(variableSubclass:\\|variableWordSubclass:\\|variableByteSubclass:\\|subclass:\\)"
- "Regexp matching delimiter following parent identifier.")
-
- (defconst smt-identifier-chars "a-zA-Z0-9"
- "String of chars and char ranges that may be used within a Smalltalk identifier.")
-
- (defconst smt-identifier (concat "\\([a-zA-Z][" smt-identifier-chars "]*\\)")
- "Regular expression matching a Smalltalk identifier.")
-
-
- (defconst smt-class-name-before
- (concat "^[ \t]*" smt-identifier
- "[ \t\n]+" smt-subclass-separator
- "[ \t\n]*#")
- "Regexp preceding the class name in a class definition.")
-
- (defconst smt-class-name-after
- ""
- "Regexp following the class name in a class definition.")
-
- (defconst smt-class-def-regexp
- (concat smt-class-name-before smt-identifier smt-class-name-after)
- "Regular expression used to match to class definitions in source text.
- Class name identifier is grouped expression 3. 'subclass:' inheritance
- indicator is grouped expression 2. Parent identifier is grouped
- expression 1.")
-
-
- (defconst smt-lang-prefix "smt-"
- "Prefix string that starts \"br-smt.el\" symbol names.")
-
- (defconst smt-file-dir-regexp "^[^.~#].*[^.~#]$"
- "Regexp that ignores extraneous non-source files and directories.")
-
- (defconst smt-src-file-regexp ".\\.st$"
- "Regular expression matching a unique part of Smalltalk source file name and no others.")
-
- (defvar smt-children-htable nil
- "Htable whose elements are of the form: (LIST-OF-CHILD-CLASSES . CLASS-NAME).
- Used to traverse Smalltalk inheritance graph. 'br-build-children-htable' builds
- this list.")
- (defvar smt-parents-htable nil
- "Htable whose elements are of the form: (LIST-OF-PARENT-CLASSES . CLASS-NAME).
- Used to traverse Smalltalk inheritance graph. 'br-build-parents-htable' builds
- this list.")
- (defvar smt-paths-htable nil
- "Htable whose elements are of the form: (LIST-OF-CLASS-NAMES . FILE-PATH).
- FILE-PATH gives the location of classes found in LIST-OF-CLASS-NAMES.
- 'br-build-paths-htable' builds this list.")
-
-
- (defvar smt-lib-parents-htable nil
- "Htable whose elements are of the form: (LIST-OF-PARENT-CLASSES . CLASS-NAME).
- Only classes from stable software libraries are used to build the list.")
- (defvar smt-lib-paths-htable nil
- "Htable whose elements are of the form: (LIST-OF-CLASS-NAMES . FILE-PATH).
- FILE-PATH gives the location of classes found in LIST-OF-CLASS-NAMES.
- Only classes from stable software libraries are used to build the list.")
-
- (defvar smt-sys-parents-htable nil
- "Htable whose elements are of the form: (LIST-OF-PARENT-CLASSES . CLASS-NAME).
- Only classes from systems that are likely to change are used to build the list.")
- (defvar smt-sys-paths-htable nil
- "Alist whose elements are of the form: (LIST-OF-CLASS-NAMES . FILE-PATH).
- FILE-PATH gives the location of classes found in LIST-OF-CLASS-NAMES.
- Only classes from systems that are likely to change are used to build the
- list.")
-
- (defvar smt-lib-prev-search-dirs nil
- "Used to check if 'smt-lib-classes-htable' must be regenerated.")
- (defvar smt-sys-prev-search-dirs nil
- "Used to check if 'smt-sys-classes-htable' must be regenerated.")
-
- (defvar smt-env-spec nil
- "Non-nil value means Environment specification has been given but not yet built.
- Nil means current Environment has been built, though it may still require updating.")
-
- (provide 'br-smt)
-