home *** CD-ROM | disk | FTP | other *** search
- ;;!emacs
- ;;
- ;; FILE: br-objc-ft.el
- ;; SUMMARY: Objective-C OO-Browser class and feature functions.
- ;; USAGE: GNU Emacs Lisp Library
- ;; KEYWORDS: c, oop, tools
- ;;
- ;; AUTHOR: Bob Weiner
- ;; ORG: Motorola Inc.
- ;;
- ;; ORIG-DATE: 03-Oct-90
- ;; LAST-MOD: 5-May-95 at 15:57:14 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:
- ;; DESCRIP-END.
-
- ;;; ************************************************************************
- ;;; Other required Elisp libraries
- ;;; ************************************************************************
-
- (require 'br-objc)
-
- ;;; ************************************************************************
- ;;; Public variables
- ;;; ************************************************************************
-
- (defconst objc-default-category-class "[category]"
- "Name of the default class whose instances are Objective-C categories.")
-
- (defconst objc-default-protocol-class "[protocol]"
- "Name of the default class whose instances are Objective-C protocols.")
-
- (defconst objc-type-identifier
- (concat "[a-zA-Z][" objc-identifier-chars "]*[ \t\n]*[*&]*"))
-
- (defconst objc-type-tag-separator "@"
- "String that separates a tag's type from its normalized definition form.")
-
- (defconst objc-tag-fields-regexp
- ;; The \\\\? below is necessary because we sometimes use this expression to
- ;; test against a string that has ben regexp-quoted and some of the
- ;; characters in br-feature-type-regexp will then be preceded by \\.
- (format "\\`\\([^*& \n]+\\)%s\\\\?\\(%s \\)\\([^%s\n]+\\)\\(%s\\|\\'\\)"
- objc-type-tag-separator br-feature-type-regexp
- objc-type-tag-separator objc-type-tag-separator)
- "Regexp matching the fields of an Objective-C feature tag line.
- Group 1 is the class of the feature. Group 2 is the prefix preceding the
- feature when displayed within a listing buffer. Group 3 is the feature name.
- The feature definition signature begins at the end of the regexp match,
- i.e. (match-end 0), and goes to the end of the string or line.")
-
- (defvar objc-cpp-include-dirs '("/usr/include/")
- "*Ordered list of include directories by default searched by C preprocessor.
- Each directory must end with a directory separator. See also
- 'objc-include-dirs'.")
-
- (defvar objc-include-dirs nil
- "*Ordered list of directories to search for Objective-C include files.
- Each directory must end with a directory separator. Directories normally
- searched by the Objective-C pre-processor should be set instead in
- 'objc-cpp-include-dirs'.")
-
- ;;; ************************************************************************
- ;;; Public functions
- ;;; ************************************************************************
-
- (defun objc-add-default-classes ()
- ;; Add to 'system' class table.
- (mapcar (function (lambda (class) (br-add-class class br-null-path nil)))
- (list objc-default-category-class objc-default-protocol-class))
- (if br-c-tags-flag (c-add-default-classes)))
-
- (defun objc-class-definition-name (class)
- "Convert CLASS name to the way it appears in its source code definition.
- Returns a regular expression."
- (cond ((string-match "^<.+>$" class)
- ;; Remove <> delimiters from protocol class.
- (regexp-quote (substring class 1 -1)))
- ((string-match "^\\([^ \(]+\\) *(\\([^\)]*\\)) *$" class)
- ;; Allow for whitespace within class(category)
- (format "%s[ \t\n\r]*([ \t\n\r]*%s[ \t\n\r]*)"
- (regexp-quote
- (substring class (match-beginning 1) (match-end 1)))
- (regexp-quote
- (substring class (match-beginning 2) (match-end 2)))))
- ((string-match "^(\\([^\)]*\\)) *\\([^ ]+\\) *$" class)
- ;; Allow for whitespace within (category)class
- (format "%s[ \t\n\r]*([ \t\n\r]*%s[ \t\n\r]*)"
- (regexp-quote
- (substring class (match-beginning 2) (match-end 2)))
- (regexp-quote
- (substring class (match-beginning 1) (match-end 1)))))
- (t (regexp-quote class))))
-
- (defun objc-class-definition-regexp (class)
- "Return regexp to uniquely match the definition of CLASS name."
- (concat objc-class-name-before (objc-class-definition-name class)
- objc-class-name-after))
-
- (defun objc-feature-implementors (ftr-name)
- "Return unsorted list of Objective-C feature tags which implement FTR-NAME."
- (objc-feature-matches ftr-name))
-
- (defun objc-feature-locate-p (feature-tag &optional regexp-flag)
- "Leaves point at the start of FEATURE-TAG's definition in the current buffer.
- Assumes caller has moved point to the beginning of the buffer or to the point
- of desired search start.
- Optional REGEXP-FLAG means FEATURE-TAG is a regular expression."
- ;; Match to function definitions, not declarations.
- (let ((found) (start))
- ;; First move to the proper class implementation if this is not a
- ;; [default-class], so that if two classes in the same file have the same
- ;; feature signature, we still end up at the right one.
- (if (and (not (string-match (if regexp-flag "\\`\\\\\\[" "\\`\\[")
- feature-tag))
- (string-match objc-tag-fields-regexp feature-tag))
- (let ((class
- (substring feature-tag (match-beginning 1) (match-end 1))))
- ;; Protocols don't define methods, they only declare them, so we
- ;; know we can't be searching for a protocol method definition
- ;; here, and so there is no special case handling.
- (re-search-forward (concat objc-implementation-before
- ;; Assume regexp-quoted class is the
- ;; same as non-regexp-quoted version
- ;; since this call will regexp-quote it
- ;; again; we have no way of
- ;; un-regexp-quoting it.
- (objc-class-definition-name class))
- nil t)))
- ;;
- ;; Now search for feature.
- (or regexp-flag (setq feature-tag
- (objc-feature-signature-to-regexp feature-tag)))
- (while (and (re-search-forward feature-tag nil t)
- (setq start (match-beginning 0))
- (not (setq found (not (if (c-within-comment-p)
- (progn (search-forward "*/" nil t)
- t)))))))
- (if found
- (progn (goto-char start)
- (skip-chars-forward " \t\n")
- (objc-to-comments-begin)
- (recenter 0)
- (goto-char start)
- t))))
-
- (defun objc-feature-name-to-regexp (name)
- "Converts feature NAME into a regular expression matching the feature's name tag."
- (cond
- ;;
- ;; protocol name
- ((= (aref name 0) ?\<) (regexp-quote name))
- ;;
- ;; category name
- ((= (aref name 0) ?\()
- ;; Drop any class name following the category.
- (regexp-quote
- (substring name 0 (1+ (string-match "\)" name)))))
- ;;
- ;; feature tag
- ((string-match objc-tag-fields-regexp name)
- (concat
- "^" (regexp-quote (substring name (match-beginning 0) (match-end 0)))))
- ;;
- ;; unrecognized name format
- (t (error "(objc-feature-name-to-regexp): Invalid name, '%s'" name))))
-
- (defun objc-feature-signature-to-name (signature &optional with-class for-display)
- "Extracts the feature name from SIGNATURE.
- SIGNATURE may be a feature tag line or a signature extracted from source code.
- The feature's class name is dropped from signature unless optional WITH-CLASS
- is non-nil. The feature's type (class feature = +, instance feature = -)
- is dropped unless FOR-DISPLAY is non-nil."
-
- ;; feature tag
- (if (string-match objc-tag-fields-regexp signature)
- (cond ((and with-class for-display)
- (substring signature (match-beginning 1) (match-end 3)))
- (for-display
- (substring signature (match-beginning 2) (match-end 3)))
- (with-class
- (concat
- (substring signature (match-beginning 1) (1+ (match-end 1)))
- (substring signature (match-beginning 3) (match-end 3))))
- (t (substring signature (match-beginning 3) (match-end 3))))
- ;;
- ;; source code signature
- (let ((loop-p t)
- (name-part (concat "\\`" objc-name-part objc-name-sep))
- (name-type (concat "\\`" objc-name-part objc-type-sep))
- (name))
- (cond ((or (= (aref signature 0) ?\<) (= (aref signature 0) ?\())
- ;; protocol or category tags
- (setq name
- (if for-display
- (concat "@ " signature)
- signature)))
- ((string-match (concat "\\`" br-feature-type-regexp) signature)
- ;; regular feature signature
- (if for-display
- (setq name (concat (substring signature (match-beginning 0)
- (match-end 0))
- " ")))
- (setq signature (concat (substring signature (match-end 0)) ";"))
- (while (and loop-p (string-match name-part signature))
- ;; Handles named or unnamed parameters.
- (if (match-beginning objc-name-part-id)
- (setq name (concat name
- (substring
- signature
- (match-beginning objc-name-part-id)
- (match-end objc-name-part-id)))))
- (if (/= (aref signature (1- (match-end 0))) ?:)
- (setq loop-p nil
- signature (substring signature (match-end 0)))
- (setq name (concat name ":")
- signature (substring signature (match-end 0)))
- (if (string-match name-type signature)
- (setq signature (substring signature (match-end 0)))))))
- (t (error
- "(objc-feature-signature-to-name): Invalid signature, '%s'"
- signature)))
- name)))
-
- (defun objc-feature-signature-to-regexp (signature)
- "Return regexp to match the definition of an Objective-C element SIGNATURE.
- SIGNATURE may be a feature tag line or a signature extracted from source code."
- (cond ((string-match
- (format
- "^\\([^*& \n]+\\)%s%s [^%s\n]+%s\\([\<\(][^\>\)\n]+[\>\)]\\(%s\\)?\\)"
- objc-type-tag-separator br-feature-type-regexp
- objc-type-tag-separator objc-type-tag-separator
- objc-identifier)
- signature)
- ;; protocol or category signature
- (let ((class (substring signature (match-beginning 1) (match-end 1)))
- (element (substring signature (match-beginning 2)
- (match-end 2))))
- (if (= (aref element 0) ?\<)
- (if (string-equal class objc-default-protocol-class)
- ;; find def of protocol
- (concat objc-protocol-before
- (objc-class-definition-name element)
- "[\< \t\n\r]")
- ;; find def of class which conforms to protocol
- (concat objc-interface-before
- (objc-class-definition-name class)
- objc-class-name-after
- "[^\>\{]*[\<,][ \t\n\r]*"
- (objc-class-definition-name element)
- "[ \t\n\r]*[\>,]"))
- (if (string-equal class objc-default-category-class)
- ;; find def of '[category]@(category-name)class-name'
- (concat objc-interface-before
- (objc-class-definition-name element))
- ;; find def of 'class-name@(category-name)'
- (concat objc-interface-before
- (objc-class-definition-name (concat class element)))))))
- ;;
- (t
- ;; regulare feature tag
- (setq signature (regexp-quote signature))
- (if (string-match objc-tag-fields-regexp signature)
- ;;
- ;; We must leave the class name as an optional component at the
- ;; start of the signature so that functions that lookup feature
- ;; definitions can use it to ensure that the definition is found
- ;; within the right class.
- (setq signature
- (concat
- "\\(" (substring signature (match-beginning 1)
- (match-end 1))
- objc-type-tag-separator "\\)?"
- (substring signature (match-end 0)))))
- (let ((pat) (i 0) (c) (len (length signature)))
- (while (< i len)
- (setq c (aref signature i)
- pat (cond ((= c ? )
- (concat pat "[ \t\n\^M]*"))
- (t
- (concat pat (char-to-string c))))
- i (1+ i)))
- (if (= ?{ (aref pat (1- (length pat))))
- (setq pat (concat (substring pat 0 -1)
- "\\([ \t\n]*//.*[\n]\\)*[ \t\n]*{"))
- pat)))))
-
- (defun objc-feature-tree-command-p (class-or-signature)
- "Display definition of CLASS-OR-SIGNATURE if a signature and return t, else return nil."
- (if (br-in-browser) (br-to-view-window))
- (br-feature-found-p (br-feature-file class-or-signature)
- class-or-signature))
-
- (defun objc-list-categories (class)
- "Return sorted list of Objective-C CLASS categories."
- (let ((obuf (current-buffer))
- (categories)
- class-tag)
- (cond ((string-equal class objc-default-category-class)
- (objc-list-features class))
- ((= (aref class 0) ?\[)
- ;; Any other default classes belong to no categories.
- nil)
- (t
- (setq class-tag (concat "\n" class objc-type-tag-separator "\("))
- (set-buffer
- (funcall br-find-file-noselect-function br-feature-tags-file))
- (goto-char 1)
- ;; Use a string match for speed.
- (while (search-forward class-tag nil t)
- (setq categories (cons (br-feature-current) categories)))
- (set-buffer obuf)
- (objc-sort-features (nreverse categories))))))
-
- (defun objc-list-features (class &optional indent)
- "Return sorted list of Objective-C features lexically defined in CLASS."
- (let ((obuf (current-buffer))
- (features)
- class-tag
- search-function)
- (if (= (aref class 0) ?\[)
- ;; Default class of protocols or categories. Use a string match
- ;; for speed.
- (setq search-function 'search-forward
- class-tag (concat "\n" class objc-type-tag-separator))
- (setq search-function 're-search-forward
- class-tag
- ;; Include methods defined in any of the class' categories.
- (concat "^" class "\\(([^\)]*)\\)?" objc-type-tag-separator)))
- (set-buffer (funcall br-find-file-noselect-function br-feature-tags-file))
- (goto-char 1)
- (while (funcall search-function class-tag nil t)
- (setq features (cons (br-feature-current) features)))
- (set-buffer obuf)
- (objc-sort-features (nreverse features))))
-
- (defun objc-list-protocols (class)
- "Return sorted list of Objective-C CLASS protocols."
- (let ((obuf (current-buffer))
- (protocols)
- class-tag)
- (cond ((string-equal class objc-default-protocol-class)
- (objc-list-features class))
- ((= (aref class 0) ?\[)
- ;; Any other default classes conform to no formal protocols.
- nil)
- (t
- (setq class-tag (concat "\n" class objc-type-tag-separator "\<"))
- (set-buffer
- (funcall br-find-file-noselect-function br-feature-tags-file))
- (goto-char 1)
- ;; Use a string match for speed.
- (while (search-forward class-tag nil t)
- (setq protocols (cons (br-feature-current) protocols)))
- (set-buffer obuf)
- (objc-sort-features (nreverse protocols))))))
-
- (defun objc-routine-at-point-p ()
- "Returns name of Objective-C routine signature at point or nil.
- If called interactively, it prints the name in the minibuffer."
- (interactive)
- (save-excursion
- (if (and (re-search-backward "[-+\n\^M]\\|\\`" nil t)
- (looking-at "[ \t\n\^M]*[-+]"))
- (let ((name "") (loop-p t)
- (name-part (concat objc-name-part objc-name-sep))
- (name-type (concat objc-name-part objc-type-sep)))
- (goto-char (match-end 0))
- (while (and loop-p (looking-at name-part))
- ;; Handles named or unamed parameters.
- (if (match-beginning objc-name-part-id)
- (setq name (concat name
- (buffer-substring
- (match-beginning objc-name-part-id)
- (match-end objc-name-part-id)))))
- (goto-char (match-end 0))
- (if (/= (preceding-char) ?:)
- (setq loop-p nil)
- (setq name (concat name ":"))
- (if (looking-at name-type) (goto-char (match-end 0)))
- ))
- (if (interactive-p)
- (message name)
- name)))))
-
- (defun objc-scan-features ()
- "Return reverse ordered list of Objective-C routine definitions in current buffer.
- Assume point is at beginning of widened buffer."
- (save-excursion
- (let ((routines) (rout) (class-end)
- class category)
- (while (re-search-forward
- (concat "^@implementation[ \t\n\r]+" objc-identifier
- "\\([ \t\n\r]*([ \t\n\r]*" objc-identifier
- "[ \t\n\r]*)\\)?")
- nil t)
- (setq category (if (match-beginning 3)
- (buffer-substring (match-beginning 3)
- (match-end 3)))
- class (buffer-substring (match-beginning 1) (match-end 1))
- class (if category (format "%s(%s)" class category) class))
- (save-excursion
- (if (search-forward "\n@end" nil t)
- (setq class-end (point))
- (error "(objc-scan-features): %s, at char %d, @implementation without @end.")))
- (while (re-search-forward objc-routine-def class-end t)
- (setq rout (buffer-substring (match-beginning 0)
- (match-end 0)))
- (if (c-within-comment-p)
- (search-forward "*/" nil t)
- (backward-char) ;; Move point to precede feature opening brace.
- (condition-case ()
- ;; Move to end of feature but ignore any error if braces are
- ;; unbalanced. Let the compiler tell the user about this.
- (forward-sexp)
- (error nil))
- (setq rout (objc-feature-normalize rout class)
- routines (cons rout routines)))))
- routines)))
-
- (defun objc-scan-protocol-list ()
- "Return a list of protocol names following point, delimited by <> and separated by commas.
- Point may be immediately before or after the '<' which begins the protocol
- list. Leaves point afer the closing delimiter of the protocol list."
- (cond ((= (preceding-char) ?\<))
- ((= (following-char) ?\<)
- (forward-char 1))
- (t
- (error "(objc-scan-protocol-list): Point must precede or follow a '<' delimiter.")))
- (let ((end (save-excursion (search-forward "\>")))
- (protocols))
- (while (re-search-forward objc-identifier end t)
- (setq protocols (cons (concat "<"
- (buffer-substring (match-beginning 1)
- (match-end 1))
- ">")
- protocols)))
- (goto-char end)
- (nreverse protocols)))
-
- (defun objc-sort-features (routine-list)
- (sort routine-list 'objc-feature-lessp))
-
- (defun objc-to-definition (&optional other-win)
- "If point is within a declaration, try to move to its definition.
- With OTHER-WIN non-nil, show it in another window."
- (interactive)
- (let ((opoint (point)))
- (cond
- ((objc-include-file other-win))
- ((br-check-for-class (objc-class-decl-p) other-win))
- ((objc-feature other-win))
- ((and (goto-char opoint)
- (br-check-for-class (objc-find-class-name) other-win)))
- (t (beep)
- (message
- "(OO-Browser): Select an Objective-C declaration to move to its definition.")
- nil))))
-
- (defun objc-view-protocol (protocol-name)
- "Display definition of PROTOCOL-NAME for viewing.
- PROTOCOL-NAME must be a string."
- (or (string-match "<.*>" protocol-name)
- (setq protocol-name (concat "<" protocol-name ">")))
- (let* ((sig (concat objc-default-protocol-class objc-type-tag-separator
- protocol-name))
- (feature-path (br-feature-file sig)))
- (br-to-view-window)
- (if (br-feature-found-p feature-path sig)
- (progn (br-major-mode)
- (setq buffer-read-only t)
- ;; Force mode-line redisplay
- (set-buffer-modified-p (buffer-modified-p))
- (br-to-from-viewer))
- ;; Protocol not found. Return to original window and signal an error.
- (br-to-from-viewer)
- (error "(OO-Browser): No '%s' protocol defined in Environment."
- protocol-name))))
-
- ;;; ************************************************************************
- ;;; Private functions
- ;;; ************************************************************************
-
- (defun objc-class-decl-p ()
- "Return nil unless point is within a class declaration, referenced by another
- class. Commented declarations also return nil. When value is non-nil, it is
- the class name from the declaration. Leave point at start of statement for
- visual clarity."
- (objc-skip-to-statement)
- (save-excursion
- (let ((class))
- (and (looking-at objc-class-decl)
- (setq class (buffer-substring (match-beginning objc-class-name-grpn)
- (match-end objc-class-name-grpn)))
- (not (c-within-comment-p))
- (progn (beginning-of-line)
- (not (looking-at "[ \t]*//")))
- class))))
-
- (defun objc-feature (&optional other-win)
- "Move point to definition of the element given by declaration at point.
- Return nil if point is not within an element declaration."
- ;; If '{' follows the feature declaration, then feature is defined right
- ;; here, within the class definition.
- (interactive)
- (cond ((objc-feature-def-p)
- (recenter 0)
- t)
- ;; Now look for feature definition in code (non-header) files.
- ((objc-feature-decl-p)
- (let ((class) feature-name signature)
- (setq signature (buffer-substring (match-beginning 1)
- (match-end 1)))
- (save-excursion
- (if (re-search-backward objc-class-def-regexp nil t)
- (setq class (buffer-substring
- (match-beginning objc-class-name-grpn)
- (match-end objc-class-name-grpn)))))
- (setq signature (objc-feature-normalize signature class)
- feature-name (objc-feature-signature-to-name signature))
- (if (objc-locate-feature feature-name class signature other-win)
- t
- (beep)
- (message "(OO-Browser): No definition for '%s' in '%s'."
- feature-name (or class "UNKNOWN-CLASS"))
- t)))))
-
- (defun objc-feature-decl-p ()
- "Return t if point is within an Objective-C feature declaration."
- (save-excursion
- (beginning-of-line)
- (looking-at objc-feature-declaration)))
-
- (defun objc-feature-def-p ()
- "Return nil unless point is within an element definition.
- Commented element definitions also return nil."
- (save-excursion
- (objc-skip-to-statement)
- (and (not (c-within-comment-p))
- (save-excursion (beginning-of-line)
- (not (looking-at "[ \t]*//")))
- (not (looking-at objc-class-decl))
- (looking-at (concat objc-feature-decl-or-def
- objc-comment-regexp "[{;,]"))
- (= ?\{ (save-excursion (goto-char (match-end 0))
- (preceding-char))))))
-
- (defun objc-feature-partial-name (feature-tag)
- "Extract the feature name without its class name from FEATURE-TAG."
- (objc-feature-signature-to-name feature-tag))
-
- (defun objc-feature-lessp (tag1 tag2)
- (string-lessp (objc-feature-partial-name tag1)
- (objc-feature-partial-name tag2)))
-
- (defun objc-feature-matches (name)
- "Return an unsorted list of feature tags whose names match in whole to NAME."
- ;; Ensure match to feature names only.
- (let ((regexp (format "^[^%s \n]+%s%s %s%s" objc-type-tag-separator
- objc-type-tag-separator br-feature-type-regexp
- (regexp-quote name) objc-type-tag-separator))
- (features))
- (save-excursion
- (set-buffer
- (funcall br-find-file-noselect-function br-feature-tags-file))
- (goto-char 1)
- (while (re-search-forward regexp nil t)
- (save-excursion
- (setq features (cons (br-feature-current) features))))
- features)))
-
- (defun objc-feature-normalize (routine class)
- (let* ((len (length routine))
- (normal-feature (make-string len ?\ ))
- (n 0) (i 0)
- (space-list '(?\ ?\t ?\n ?\^M))
- (space-regexp "[ \t\n\^M]+")
- chr)
- (while (< i len)
- (setq chr (aref routine i))
- (cond
- ;; Convert sequences of space characters to a single space.
- ((memq chr space-list)
- (aset normal-feature n ?\ )
- (if (string-match space-regexp routine i)
- (setq i (match-end 0)
- n (1+ n))
- (setq i (1+ i)
- n (1+ n))))
- ;;
- ;; Remove // style comments
- ((and (= chr ?/)
- (< (1+ i) len)
- (= (aref routine (1+ i)) ?/))
- (setq i (+ i 2))
- (while (and (< i len) (/= (aref routine i) ?\n))
- (setq i (1+ i))))
- (t ;; Normal character
- (aset normal-feature n chr)
- (setq i (1+ i)
- n (1+ n)))))
- (setq normal-feature (substring normal-feature 0 n))
- (concat class objc-type-tag-separator
- (objc-feature-signature-to-name normal-feature nil t)
- objc-type-tag-separator
- normal-feature)))
-
- (defun objc-feature-tag-class (feature-signature)
- "Extract the class name from FEATURE-SIGNATURE."
- (if (string-match objc-type-tag-separator feature-signature)
- (substring feature-signature 0 (match-beginning 0))
- ""))
-
- (defun objc-feature-tags-lookup (class-list signature ftr-regexp &optional other-win)
- "Display routine definition derived from CLASS-LIST, matching SIGNATURE (string) and FTR-REGEXP (regexp matching SIGNATURE).
- Use routine tags table to locate a match. Caller must use 'set-buffer'
- to restore prior buffer when a match is not found."
- (set-buffer (funcall br-find-file-noselect-function br-feature-tags-file))
- (let ((classes class-list)
- (found-ftr)
- (class))
- (if (null class-list)
- nil
- (while (and (not found-ftr) classes)
- (setq class (car classes)
- found-ftr (br-feature-found-p
- (br-feature-file signature)
- ftr-regexp nil other-win t)
- classes (if found-ftr nil (cdr classes))))
- (if found-ftr
- (or class t)
- (objc-feature-tags-lookup
- (apply 'append (mapcar (function (lambda (cl) (br-get-parents cl)))
- class-list))
- signature
- ftr-regexp
- other-win)))))
-
- (defun objc-files-with-source (class)
- "Use CLASS to compute set of files that match to an Objective-C source file regexp.
- Return as a list."
- (let ((file (if class (br-class-path class) buffer-file-name)))
- (and file
- (let* ((src-file-regexp (concat "^" (br-filename-head file)
- objc-code-file-regexp))
- (dir (file-name-directory file))
- (files (directory-files dir nil src-file-regexp)))
- (mapcar (function (lambda (f) (concat dir f)))
- files)))))
-
- (defun objc-find-ancestors-feature (class-list signature &optional other-win)
- "Scan ancestors of CLASS-LIST and show routine definition matching SIGNATURE."
- ;; If no class, search for non-element function.
- (or class-list (setq class-list '(nil)))
- (let ((obuf (current-buffer))
- (ftr-regexp (objc-feature-signature-to-regexp signature)))
- (prog1
- (if (and br-feature-tags-file
- (file-exists-p br-feature-tags-file)
- (file-readable-p br-feature-tags-file))
- (objc-feature-tags-lookup
- class-list signature ftr-regexp other-win)
- ;; Only works if features are in same directory as class def.
- (objc-scan-ancestors-feature class-list ftr-regexp other-win))
- (set-buffer obuf))))
-
- (defun objc-find-class-name ()
- "Return current word as a potential class name."
- (save-excursion
- (let* ((start)
- (ignore "-+ \t\n;,.<>{}*&\(\)")
- (pat (concat "^" ignore)))
- (forward-char 1)
- (skip-chars-backward ignore)
- (skip-chars-backward pat)
- (setq start (point))
- (skip-chars-forward (concat pat ":"))
- (buffer-substring start (point)))))
-
- (defun objc-get-class-name-from-source ()
- "Return class name from closest class definition preceding point or nil."
- (let ((opoint (point))
- (class))
- (save-excursion
- (if (re-search-backward objc-class-def-regexp nil t)
- (progn (setq class (buffer-substring
- (match-beginning objc-class-name-grpn)
- (match-end objc-class-name-grpn)))
- ;; Ensure that declaration occurs within class definition.
- (forward-list)
- (and (> (point) opoint) class))))))
-
- (defun objc-get-feature-tags (routine-file &optional routine-list)
- "Scan Objective-C ROUTINE-FILE and hold routine tags in 'br-feature-tags-file'.
- Assume ROUTINE-FILE has already been read into a buffer and that
- 'br-feature-tags-init' has been called. Optional ROUTINE-LIST can be
- provided so that a non-standard scan function can be used before calling
- this function."
- (interactive)
- (let ((obuf (current-buffer)))
- (setq routine-list
- (objc-sort-features
- (or routine-list (objc-scan-features))))
- (set-buffer (funcall br-find-file-noselect-function br-feature-tags-file))
- (goto-char 1)
- ;; Delete any prior routine tags associated with routine-file
- (if (search-forward routine-file nil 'end)
- (progn (forward-line -1)
- (let ((start (point)))
- (search-forward "\^L" nil 'end 2)
- (backward-char 1)
- (delete-region start (point))
- )))
- (if routine-list
- (progn (insert "\^L\n" routine-file "\n")
- (mapcar (function (lambda (tag) (insert tag "\n")))
- routine-list)))
- (set-buffer obuf)))
-
- (defun objc-include-file (&optional other-win)
- "If point is on an include file line, try to display file.
- Return non-nil iff an include file line, even if file is not found.
- Look for include file in 'objc-cpp-include-dirs' and in directory list
- 'objc-include-dirs'."
- (let ((opoint (point)))
- (beginning-of-line)
- (if (looking-at objc-include-regexp)
- (let ((incl-type (string-to-char
- (buffer-substring
- (match-beginning objc-include-type-grpn)
- (1+ (match-beginning objc-include-type-grpn)))))
- (file (buffer-substring
- (match-beginning objc-include-file-grpn)
- (match-end objc-include-file-grpn)))
- (path)
- (dir-list objc-include-dirs)
- (found))
- (goto-char opoint)
- (setq dir-list (if (= incl-type ?\<)
- (append dir-list objc-cpp-include-dirs)
- (cons (file-name-directory buffer-file-name)
- dir-list)))
- (while dir-list
- (setq path (concat (car dir-list) file)
- dir-list (if (setq found (file-exists-p path))
- nil
- (cdr dir-list))))
- ;;
- ;; If not found in normal include dirs, check all Env paths also.
- ;;
- (if (not found)
- (let ((paths (delq nil (hash-map 'cdr br-paths-htable))))
- (while paths
- (setq path (car paths))
- (if (string-equal (file-name-nondirectory path) file)
- (setq found t paths nil)
- (setq paths (cdr paths))))))
- ;;
- ;; If found, display file
- ;;
- (if found
- (if (file-readable-p path)
- (progn
- (funcall br-edit-file-function path other-win)
- (if (not (fboundp 'br-lang-mode))
- (objc-mode-setup))
- (br-major-mode))
- (beep)
- (message "(OO-Browser): Include file '%s' unreadable." path))
- (beep)
- (message "(OO-Browser): Include file '%s' not found." file))
- path)
- (goto-char opoint)
- nil)))
-
- (defun objc-locate-feature (ftr class signature &optional other-win)
- ;; 'class' may = nil, implying non-element function
- (let ((def-class))
- (if (and signature
- (setq def-class
- (objc-find-ancestors-feature (list class)
- signature other-win)))
- (progn (if (and class (not (equal class def-class)))
- (message
- "Element `%s` of class '%s' inherited from class '%s'."
- ftr class def-class))
- t))))
-
- (defun objc-scan-ancestors-feature (class-list ftr-regexp &optional other-win)
- "Display routine definition derived from CLASS-LIST, matching FTR-REGEXP.
- Scan files with same base name as class file."
- (let ((classes class-list)
- (found-ftr)
- (code-def-files)
- (file)
- (class))
- (if (null class-list)
- nil
- (while (and (not found-ftr) classes)
- (setq class (car classes)
- code-def-files (objc-files-with-source class))
- (while (and (setq file (car code-def-files))
- (not (setq found-ftr
- (br-feature-found-p file ftr-regexp
- nil other-win t))))
- (setq code-def-files (cdr code-def-files)))
- (setq classes (if found-ftr nil (cdr classes))))
- (if found-ftr
- (or class t)
- (objc-scan-ancestors-feature
- (apply 'append (mapcar (function (lambda (cl) (br-get-parents cl)))
- class-list))
- ftr-regexp)))))
-
- (defun objc-skip-past-comments ()
- "Skip over comments immediately following point."
- (skip-chars-forward " \t\n")
- (while
- (cond ((looking-at "//")
- (equal (forward-line 1) 0))
- ((looking-at "/\\*")
- (re-search-forward "\\*/" nil t))
- (t nil))))
-
- (defun objc-skip-to-statement ()
- (if (re-search-backward "\\(^\\|[;{}]\\)[ \t]*" nil t)
- (progn (goto-char (match-end 0))
- (skip-chars-forward " \t")
- t)))
-
- ;;; ************************************************************************
- ;;; Private variables
- ;;; ************************************************************************
-
- (defconst objc-code-file-regexp ".\\.[cmCM]$"
- "Regular expression matching a unique part of Objective-C source (non-header) file name and no others.")
-
- (defconst objc-include-regexp
- "[ \t/*]*#[ \t]*\\(import\\|include\\)[ \t]+\\([\"<]\\)\\([^\">]+\\)[\">]"
- "Regexp to match to Objective-C include file lines.
- File name is grouping 'objc-include-file-grpn'. Type of include,
- user-specified via double quote, or system-related starting with `<' is given
- by grouping 'objc-include-type-grpn'.")
-
- (defconst objc-include-type-grpn 2)
- (defconst objc-include-file-grpn 3)
-
- (defconst objc-type-def-modifier
- "\\(auto\\|const\\|inline\\|register\\|static\\|typedef\\)")
-
- (defconst objc-func-identifier (concat
- "[_a-zA-Z][^][ \t:;.,~{}()]*")
- "Regular expression matching an Objective-C function name.")
-
- (defconst objc-feature-decl-or-def
- "[-+]\\([^\]\[{};`'\"/|?,!.#$%^=+-]+\\)"
- "Regexp matching an Objective-C feature declaration or definition.
- Feature name is group 1.")
-
- (defconst objc-feature-name-grpn 1)
-
- (defconst objc-comment-regexp "\\([ \t\n]*//.*[\n]\\)*[ \t\n]*")
-
- (defconst objc-routine-def (concat "^" objc-feature-decl-or-def
- objc-comment-regexp "{"))
-
- (defconst objc-feature-declaration
- (concat "^[ \t]*\\(" objc-feature-decl-or-def "\\)" objc-comment-regexp ";"))
-
- (defconst objc-class-decl
- (concat objc-class-name-before objc-identifier "[ \t]*")
- "Regexp matching an Objective-C class declaration.
- Class name is grouping 'objc-class-name-grpn'.")
-
- (defconst objc-class-name-grpn 2)
-
- (defconst objc-arg-identifier (concat
- "[_a-zA-Z][" objc-identifier-chars "]*")
- "Regular expression matching an Objective-C function argument identifier.")
-
- (defconst objc-name-part-prefix
- "[ \t\n]*\\(([^\)]+)[ \t\n]*\\)?")
-
- (defconst objc-name-part
- (concat objc-name-part-prefix objc-identifier "?"))
-
- (defconst objc-name-sep "[ \t\n]*\\([:;{]\\)")
-
- (defconst objc-type-sep "\\([ \t\n;{]\\)")
-
- (defconst objc-name-part-type 1)
- (defconst objc-name-part-id 2)
- (defconst objc-name-part-sep 3)
-
- (provide 'br-objc-ft)
-