diff options
Diffstat (limited to 'lisp/progmodes/cc-cmds.el')
| -rw-r--r-- | lisp/progmodes/cc-cmds.el | 150 |
1 files changed, 76 insertions, 74 deletions
diff --git a/lisp/progmodes/cc-cmds.el b/lisp/progmodes/cc-cmds.el index 33a03602070..bdfdf178d43 100644 --- a/lisp/progmodes/cc-cmds.el +++ b/lisp/progmodes/cc-cmds.el @@ -1,4 +1,4 @@ -;;; cc-cmds.el --- user level commands for CC Mode +;;; cc-cmds.el --- user level commands for CC Mode -*- lexical-binding: t -*- ;; Copyright (C) 1985, 1987, 1992-2021 Free Software Foundation, Inc. @@ -49,12 +49,11 @@ ; which looks at this. (cc-bytecomp-defun electric-pair-post-self-insert-function) (cc-bytecomp-defvar c-indent-to-body-directives) +(defvar c-syntactic-context) ;; Indentation / Display syntax functions (defvar c-fix-backslashes t) -(defvar c-syntactic-context) - (defun c-indent-line (&optional syntax quiet ignore-point-pos) "Indent the current line according to the syntactic context, if `c-syntactic-indentation' is non-nil. Optional SYNTAX is the @@ -1220,9 +1219,9 @@ numeric argument is supplied, or the point is inside a literal." (self-insert-command (prefix-numeric-value arg))) (setq final-pos (point)) -;;;; 2010-01-31: There used to be code here to put a syntax-table text -;;;; property on the new < or > and its mate (if any) when they are template -;;;; parens. This is now done in an after-change function. +;;;; 2010-01-31: There used to be code here to put a syntax-table text +;;;; property on the new < or > and its mate (if any) when they are template +;;;; parens. This is now done in an after-change function. (when (and (not arg) (not literal)) ;; Have we got a delimiter on a #include directive? @@ -1639,8 +1638,8 @@ No indentation or other \"electric\" behavior is performed." ;; ;; This function might do hidden buffer changes. (save-excursion - (let* (kluge-start - decl-result brace-decl-p + (let* (knr-start knr-res + decl-result (start (point)) (paren-state (c-parse-state)) (least-enclosing (c-least-enclosing-brace paren-state))) @@ -1670,63 +1669,54 @@ No indentation or other \"electric\" behavior is performed." (not (looking-at c-defun-type-name-decl-key)))))) 'at-function-end) (t - ;; Find the start of the current declaration. NOTE: If we're in the - ;; variables after a "struct/eval" type block, we don't get to the - ;; real declaration here - we detect and correct for this later. - - ;;If we're in the parameters' parens, move back out of them. - (if least-enclosing (goto-char least-enclosing)) ;; Kluge so that c-beginning-of-decl-1 won't go back if we're already ;; at a declaration. (if (or (and (eolp) (not (eobp))) ; EOL is matched by "\\s>" - (not (looking-at -"\\([;#]\\|\\'\\|\\s(\\|\\s)\\|\\s\"\\|\\s\\\\|\\s$\\|\\s<\\|\\s>\\|\\s!\\)"))) + (not (c-looking-at-non-alphnumspace))) (forward-char)) - (setq kluge-start (point)) - ;; First approximation as to whether the current "header" we're in is - ;; one followed by braces. - (setq brace-decl-p - (save-excursion - (and (c-syntactic-re-search-forward "[;{]" nil t t) - (or (eq (char-before) ?\{) - (and c-recognize-knr-p - ;; Might have stopped on the - ;; ';' in a K&R argdecl. In - ;; that case the declaration - ;; should contain a block. - (c-in-knr-argdecl)))))) - (setq decl-result - (car (c-beginning-of-decl-1 - ;; NOTE: If we're in a K&R region, this might be the start - ;; of a parameter declaration, not the actual function. - ;; It might also leave us at a label or "label" like - ;; "private:". - (and least-enclosing ; LIMIT for c-b-of-decl-1 - (c-safe-position least-enclosing paren-state))))) - - ;; Has the declaration we've gone back to got braces? - (if (or (eq decl-result 'label) - (looking-at c-protection-key)) - (setq brace-decl-p nil)) - (cond - ((or (eq decl-result 'label) ; e.g. "private:" or invalid syntax. - (= (point) kluge-start)) ; might be BOB or unbalanced parens. - 'outwith-function) - ((eq decl-result 'same) - (if brace-decl-p - (if (eq (point) start) - 'at-header + (if (and least-enclosing + (eq (char-after least-enclosing) ?\()) + (c-go-list-forward least-enclosing)) + (c-forward-syntactic-ws) + (setq knr-start (point)) + (if (and (c-syntactic-re-search-forward "[;{]" nil t t) + (eq (char-before) ?\{)) + (progn + (backward-char) + (cond + ((or (progn + (c-backward-syntactic-ws) + (<= (point) start)) + (and c-recognize-knr-p + (and (setq knr-res (c-in-knr-argdecl)) + (<= knr-res knr-start)))) 'in-header) - 'outwith-function)) - ((eq decl-result 'previous) - (if (and (not brace-decl-p) - (c-in-function-trailer-p)) - 'at-function-end - 'outwith-function)) - (t (error - "c-where-wrt-brace-construct: c-beginning-of-decl-1 returned %s" - decl-result)))))))) + ((and knr-res + (goto-char knr-res) + (c-backward-syntactic-ws))) ; Always returns nil. + (t + (when (eq (char-before) ?\)) + ;; The `c-go-list-backward' is a precaution against + ;; `c-beginning-of-decl-1' spuriously finding a C++ lambda + ;; function inside the parentheses. + (c-go-list-backward)) + (setq decl-result + (car (c-beginning-of-decl-1 + (and least-enclosing + (c-safe-position + least-enclosing paren-state))))) + (cond + ((> (point) start) + 'outwith-function) + ((eq decl-result 'same) + (if (eq (point) start) + 'at-header + 'in-header)) + (t (error + "c-where-wrt-brace-construct: c-beginning-of-decl-1 returned %s" + decl-result)))))) + 'outwith-function)))))) (defun c-backward-to-nth-BOF-{ (n where) ;; Skip to the opening brace of the Nth function before point. If @@ -1749,9 +1739,11 @@ No indentation or other \"electric\" behavior is performed." (goto-char (c-least-enclosing-brace (c-parse-state))) (setq n (1- n))) ((eq where 'in-header) - (c-syntactic-re-search-forward "{") - (backward-char) - (setq n (1- n))) + (let ((encl-paren (c-least-enclosing-brace (c-parse-state)))) + (if encl-paren (goto-char encl-paren)) + (c-syntactic-re-search-forward "{" nil t t) + (backward-char) + (setq n (1- n)))) ((memq where '(at-header outwith-function at-function-end in-trailer)) (c-syntactic-skip-backward "^}") (when (eq (char-before) ?\}) @@ -1832,15 +1824,18 @@ No indentation or other \"electric\" behavior is performed." nil))) (eval-and-compile - (defmacro c-while-widening-to-decl-block (condition) + (defmacro c-while-widening-to-decl-block (condition &optional no-where) ;; Repeatedly evaluate CONDITION until it returns nil. After each ;; evaluation, if `c-defun-tactic' is set appropriately, widen to innards ;; of the next enclosing declaration block (e.g. namespace, class), or the ;; buffer's original restriction. ;; + ;; If NO-WHERE is non-nil, don't compile in a `(setq where ....)'. + ;; ;; This is a very special purpose macro, which assumes the existence of ;; several variables. It is for use only in c-beginning-of-defun and ;; c-end-of-defun. + (declare (debug t)) `(while (and ,condition (eq c-defun-tactic 'go-outward) @@ -1848,7 +1843,8 @@ No indentation or other \"electric\" behavior is performed." (setq paren-state (c-whack-state-after lim paren-state)) (setq lim (c-widen-to-enclosing-decl-scope paren-state orig-point-min orig-point-max)) - (setq where 'in-block)))) + ,@(if (not no-where) + `((setq where 'in-block)))))) (def-edebug-spec c-while-widening-to-decl-block t) @@ -1965,21 +1961,24 @@ defun." ;; The actual movement is done below. (setq n (1- n))) ((memq where '(at-function-end outwith-function at-header in-header)) - (when (c-syntactic-re-search-forward "{" nil 'eob) + (if (eq where 'in-header) + (let ((pos (c-least-enclosing-brace (c-parse-state)))) + (if pos (c-go-list-forward pos)))) + (when (c-syntactic-re-search-forward "{" nil 'eob t) (backward-char) (forward-sexp) (setq n (1- n)))) (t (error "c-forward-to-nth-EOF-\\;-or-}: `where' is %s" where))) - (when (c-in-function-trailer-p) - (c-syntactic-re-search-forward ";" nil 'eob t)) - ;; Each time round the loop, go forward to a "}" at the outermost level. (while (and (> n 0) (not (eobp))) (when (c-syntactic-re-search-forward "{" nil 'eob) (backward-char) (forward-sexp) (setq n (1- n)))) + + (when (c-in-function-trailer-p) + (c-syntactic-re-search-forward ";" nil 'eob t)) n) (defun c-end-of-defun (&optional arg) @@ -2326,11 +2325,11 @@ with a brace block, at the outermost level of nesting." (c-save-buffer-state ((paren-state (c-parse-state)) (orig-point-min (point-min)) (orig-point-max (point-max)) - lim name limits where) + lim name limits) (setq lim (c-widen-to-enclosing-decl-scope paren-state orig-point-min orig-point-max)) (and lim (setq lim (1- lim))) - (c-while-widening-to-decl-block (not (setq name (c-defun-name-1)))) + (c-while-widening-to-decl-block (not (setq name (c-defun-name-1))) t) (when name (setq limits (c-declaration-limits-1 near)) (cons name limits))) @@ -2946,10 +2945,13 @@ function does not require the declaration to contain a brace block." (c-looking-at-special-brace-list))) (or allow-early-stop (/= here last)) (save-excursion ; Is this a check that we're NOT at top level? -;;;; NO! This seems to check that (i) EITHER we're at the top level; OR (ii) The next enclosing -;;;; level of bracketing is a '{'. HMM. Doesn't seem to make sense. -;;;; 2003/8/8 This might have something to do with the GCC extension "Statement Expressions", e.g. -;;;; while ({stmt1 ; stmt2 ; exp ;}). This form excludes such Statement Expressions. +;;;; NO! This seems to check that (i) EITHER we're at the top level; +;;;; OR (ii) The next enclosing level of bracketing is a '{'. HMM. +;;;; Doesn't seem to make sense. +;;;; 2003/8/8 This might have something to do with the GCC extension +;;;; "Statement Expressions", e.g. +;;;; while ({stmt1 ; stmt2 ; exp ;}). +;;;; This form excludes such Statement Expressions. (or (not (c-safe (up-list -1) t)) (= (char-after) ?{)))) (goto-char last) |