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CC Mode update to version 5.29. This is for testing; it's not a released

version.
This commit is contained in:
Martin Stjernholm 2002-04-22 00:35:36 +00:00
parent 9211d05383
commit a66cd3ee16
12 changed files with 6548 additions and 3217 deletions

View file

@ -25,7 +25,7 @@
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to
;; along with GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
@ -49,47 +49,107 @@
;; Standard indentation line-ups
(defun c-lineup-topmost-intro-cont (langelem)
"Line up declaration continuation lines zero or one indentation step.
For lines in the \"header\" of a definition, zero is used. For other
lines, `c-basic-offset' is added to the indentation. E.g:
int
neg (int i) <- c-lineup-topmost-intro-cont
{
return -i;
}
struct
larch <- c-lineup-topmost-intro-cont
{
double height;
}
the_larch, <- c-lineup-topmost-intro-cont
another_larch; <- c-lineup-topmost-intro-cont
<--> c-basic-offset
struct larch
the_larch, <- c-lineup-topmost-intro-cont
another_larch; <- c-lineup-topmost-intro-cont
\(This function is mainly provided to mimic the behavior of CC Mode
5.28 and earlier where this case wasn't handled consistently so that
these lines could be analyzed as either topmost-intro-cont or
statement-cont.)
Works with: topmost-intro-cont."
(save-excursion
(beginning-of-line)
(c-backward-syntactic-ws (cdr langelem))
(if (memq (char-before) '(?} ?,))
c-basic-offset)))
(defun c-lineup-arglist (langelem)
"Line up the current argument line under the first argument.
Works with: arglist-cont-nonempty."
Works with: arglist-cont-nonempty, arglist-close."
(save-excursion
(let* ((containing-sexp
(save-excursion
;; arglist-cont-nonempty gives relpos ==
;; to boi of containing-sexp paren. This
;; is good when offset is +, but bad
;; when it is c-lineup-arglist, so we
;; have to special case a kludge here.
(if (memq (car langelem) '(arglist-intro arglist-cont-nonempty))
(progn
(beginning-of-line)
(backward-up-list 1)
(skip-chars-forward " \t" (c-point 'eol)))
(goto-char (cdr langelem)))
(point)))
(langelem-col (c-langelem-col langelem t)))
(if (save-excursion
(beginning-of-line)
(looking-at "[ \t]*)"))
(progn (goto-char (match-end 0))
(c-forward-sexp -1)
(forward-char 1)
(c-forward-syntactic-ws)
(- (current-column) langelem-col))
(goto-char containing-sexp)
(or (eolp)
(not (memq (char-after) '(?{ ?\( ?\[)))
(let ((eol (c-point 'eol))
(here (progn
(forward-char 1)
(skip-chars-forward " \t")
(point))))
(c-forward-syntactic-ws)
(if (< (point) eol)
(goto-char here))))
(- (current-column) langelem-col)
))))
(beginning-of-line)
(let ((containing-sexp (c-most-enclosing-brace (c-parse-state))))
(goto-char (1+ containing-sexp))
(let ((eol (c-point 'eol)))
(c-forward-syntactic-ws)
(when (< (point) eol)
(goto-char (1+ containing-sexp))
(skip-chars-forward " \t")))
(vector (current-column)))))
;; Contributed by Kevin Ryde <user42@zip.com.au>.
(defun c-lineup-argcont (elem)
"Line up a continued argument.
foo (xyz, aaa + bbb + ccc
+ ddd + eee + fff); <- c-lineup-argcont
Only continuation lines like this are touched, `nil' is returned on lines
which are the start of an argument.
Within a gcc asm block, \":\" is recognised as an argument separator,
but of course only between operand specifications, not in the expressions
for the operands.
Works with: arglist-cont, arglist-cont-nonempty."
(save-excursion
(beginning-of-line)
(let ((bol (point)))
;; Previous line ending in a comma means we're the start of an
;; argument. This should quickly catch most cases not for us.
(c-backward-syntactic-ws)
(let ((c (char-before)))
(unless (eq c ?,)
;; In a gcc asm, ":" on the previous line means the start of an
;; argument. And lines starting with ":" are not for us, don't
;; want them to indent to the preceding operand.
(let ((gcc-asm (save-excursion
(goto-char bol)
(c-in-gcc-asm-p))))
(unless (and gcc-asm
(or (eq c ?:)
(save-excursion
(goto-char bol)
(looking-at "[ \t]*:"))))
(c-lineup-argcont-scan (if gcc-asm ?:))
(vector (current-column)))))))))
(defun c-lineup-argcont-scan (&optional other-match)
;; Find the start of an argument, for `c-lineup-argcont'.
(when (eq 0 (c-backward-token-1 1 t))
(let ((c (char-after)))
(if (or (eq c ?,) (eq c other-match))
(progn
(forward-char)
(c-forward-syntactic-ws))
(c-lineup-argcont-scan other-match)))))
(defun c-lineup-arglist-intro-after-paren (langelem)
"Line up a line just after the open paren of the surrounding paren or
@ -98,13 +158,10 @@ brace block.
Works with: defun-block-intro, brace-list-intro,
statement-block-intro, statement-case-intro, arglist-intro."
(save-excursion
(let ((langelem-col (c-langelem-col langelem t))
(ce-curcol (save-excursion
(beginning-of-line)
(backward-up-list 1)
(skip-chars-forward " \t" (c-point 'eol))
(current-column))))
(- ce-curcol langelem-col -1))))
(beginning-of-line)
(backward-up-list 1)
(skip-chars-forward " \t" (c-point 'eol))
(vector (1+ (current-column)))))
(defun c-lineup-arglist-close-under-paren (langelem)
"Line up a closing paren line under the corresponding open paren.
@ -114,12 +171,9 @@ brace-list-close, arglist-close, extern-lang-close, namespace-close
\(for most of these, a zero offset will normally produce the same
result, though)."
(save-excursion
(let ((langelem-col (c-langelem-col langelem t))
(ce-curcol (save-excursion
(beginning-of-line)
(backward-up-list 1)
(current-column))))
(- ce-curcol langelem-col))))
(beginning-of-line)
(backward-up-list 1)
(vector (current-column))))
(defun c-lineup-close-paren (langelem)
"Line up the closing paren under its corresponding open paren if the
@ -147,7 +201,7 @@ brace-list-close, arglist-close, extern-lang-close, namespace-close."
(c-forward-syntactic-ws (c-point 'eol))
(if (eolp)
0
(- opencol (c-langelem-col langelem t))))
(vector opencol)))
(error nil))))
(defun c-lineup-streamop (langelem)
@ -155,10 +209,10 @@ brace-list-close, arglist-close, extern-lang-close, namespace-close."
Works with: stream-op."
(save-excursion
(let ((langelem-col (c-langelem-col langelem)))
(re-search-forward "<<\\|>>" (c-point 'eol) 'move)
(goto-char (match-beginning 0))
(- (current-column) langelem-col))))
(goto-char (cdr langelem))
(re-search-forward "<<\\|>>" (c-point 'eol) 'move)
(goto-char (match-beginning 0))
(vector (current-column))))
(defun c-lineup-multi-inher (langelem)
"Line up the classes in C++ multiple inheritance clauses and member
@ -182,8 +236,8 @@ Works with: inher-cont, member-init-cont."
(here (point))
(char-after-ip (progn
(skip-chars-forward " \t")
(char-after)))
(langelem-col (c-langelem-col langelem)))
(char-after))))
(if (cdr langelem) (goto-char (cdr langelem)))
;; This kludge is necessary to support both inher-cont and
;; member-init-cont, since they have different anchor positions.
@ -199,7 +253,7 @@ Works with: inher-cont, member-init-cont."
(if (or (eolp)
(looking-at c-comment-start-regexp))
(c-forward-syntactic-ws here))
(- (current-column) langelem-col)
(vector (current-column))
)))
(defun c-lineup-java-inher (langelem)
@ -216,12 +270,12 @@ class Foo class Foo
Works with: inher-cont."
(save-excursion
(let ((langelem-col (c-langelem-col langelem)))
(forward-word 1)
(if (looking-at "[ \t]*$")
c-basic-offset
(c-forward-syntactic-ws)
(- (current-column) langelem-col)))))
(goto-char (cdr langelem))
(forward-word 1)
(if (looking-at "[ \t]*$")
c-basic-offset
(c-forward-syntactic-ws)
(vector (current-column)))))
(defun c-lineup-java-throws (langelem)
"Line up Java throws declarations.
@ -246,10 +300,9 @@ Works with: func-decl-cont."
(throw 'done t))))))
(if throws
(if (zerop (c-forward-token-1 1 nil (c-point 'eol)))
(- (current-column) (c-langelem-col langelem))
(vector (current-column))
(back-to-indentation)
(+ (- (current-column) (c-langelem-col langelem))
c-basic-offset))
(vector (+ (current-column) c-basic-offset)))
c-basic-offset))))
(defun c-indent-one-line-block (langelem)
@ -332,21 +385,33 @@ Works with: The `c' syntactic symbol."
(if (looking-at c-current-comment-prefix)
(- (match-end 0) (point))
0)))
(starterlen (save-excursion
(goto-char (cdr langelem))
(looking-at comment-start-skip)
(- (save-excursion
(goto-char (match-end 0))
(skip-chars-backward " \t")
(point))
(or (match-end 1) (point))
1))) ; Don't count the first '/'.
(langelem-col (save-excursion (c-langelem-col langelem))))
(starterlen
;; Get the length of the comment starter, not including
;; the first '/'. We check if the comment prefix matched
;; on the current line matches the starter or if it
;; matches comment-start-skip, and choose whichever is
;; longest.
(max (save-excursion
(goto-char (1+ (cdr langelem)))
(if (and (match-string 0)
(looking-at (regexp-quote (match-string 0))))
(- (match-end 0) (match-beginning 0))
0))
(save-excursion
(goto-char (cdr langelem))
(looking-at comment-start-skip)
(- (or (match-end 1)
(save-excursion
(goto-char (match-end 0))
(skip-chars-backward " \t")
(point)))
(point)
1)))))
(if (and (> starterlen 10) (zerop prefixlen))
;; The comment has a long starter and the line doesn't have
;; a nonempty comment prefix. Treat it as free form text
;; and don't change the indentation.
(- (current-column) langelem-col)
(vector (current-column))
(forward-line -1)
(back-to-indentation)
(if (>= (cdr langelem) (point))
@ -356,11 +421,14 @@ Works with: The `c' syntactic symbol."
;; starter.
(progn
(goto-char (match-end 0))
(if (looking-at "\\([ \t]+\\).+$")
;; Align with the text that hangs after the
;; comment starter.
(goto-char (match-end 1)))
(- (current-column) langelem-col))
;; The following should not be necessary, since
;; comment-start-skip should match everything (i.e.
;; typically whitespace) that leads up to the text.
;;(if (looking-at "\\([ \t]+\\).+$")
;; ;; Align with the text that hangs after the
;; ;; comment starter.
;; (goto-char (match-end 1)))
(vector (current-column)))
;; How long is the comment starter? if greater than the
;; length of the comment prefix, align left. if less
;; than or equal, align right. this should also pick up
@ -368,10 +436,9 @@ Works with: The `c' syntactic symbol."
(if (> starterlen prefixlen)
(progn
(goto-char (cdr langelem))
(- (current-column) -1 langelem-col))
(goto-char (match-end 0))
(skip-chars-backward " \t")
(- (current-column) prefixlen langelem-col)))
(vector (1+ (current-column))))
(goto-char (+ (cdr langelem) starterlen 1))
(vector (- (current-column) prefixlen))))
;; Not on the second line in the comment. If the previous
;; line has a nonempty comment prefix, align with it.
;; Otherwise, align with the previous nonempty line, but
@ -389,7 +456,7 @@ Works with: The `c' syntactic symbol."
;; Align with the comment starter rather than
;; with the code before it.
(goto-char (cdr langelem)))))
(- (current-column) langelem-col))))))
(vector (current-column)))))))
(defun c-lineup-comment (langelem)
"Line up a comment start according to `c-comment-only-line-offset'.
@ -416,6 +483,30 @@ Works with: comment-intro."
-1000)) ;jam it against the left side
))))
(defun c-lineup-knr-region-comment (langelem)
"Line up a comment in the \"K&R region\" with the declaration.
That is the region between the function or class header and the
beginning of the block. E.g:
int main()
/* This is the main function. */ <- c-lineup-knr-region-comment
{
return 0;
}
Return nil if called in any other situation, to be useful in list
expressions.
Works with: comment-intro."
(when (or (assq 'topmost-intro-cont c-syntactic-context)
(assq 'func-decl-cont c-syntactic-context)
(assq 'knr-argdecl-intro c-syntactic-context)
(assq 'lambda-intro-cont c-syntactic-context))
(save-excursion
(beginning-of-line)
(c-beginning-of-statement-1)
(vector (current-column)))))
(defun c-lineup-runin-statements (langelem)
"Line up statements when the first statement is on the same line as
the block opening brace. E.g:
@ -431,11 +522,11 @@ returned. This makes the function usable in list expressions.
Works with: The `statement' syntactic symbol."
(if (eq (char-after (cdr langelem)) ?{)
(save-excursion
(let ((langelem-col (c-langelem-col langelem)))
(forward-char 1)
(skip-chars-forward " \t")
(unless (eolp)
(- (current-column) langelem-col))))))
(if (cdr langelem) (goto-char (cdr langelem)))
(forward-char 1)
(skip-chars-forward " \t")
(unless (eolp)
(vector (current-column))))))
(defun c-lineup-math (langelem)
"Line up the current line after the equal sign on the first line in
@ -443,7 +534,7 @@ the statement. If there isn't any, indent with `c-basic-offset'. If
the current line contains an equal sign too, try to align it with the
first one.
Works with: statement-cont."
Works with: statement-cont, arglist-cont, arglist-cont-nonempty."
(save-excursion
(let ((equalp (save-excursion
(goto-char (c-point 'boi))
@ -453,8 +544,8 @@ Works with: statement-cont."
(= (c-forward-token-1 1 t eol) 0))))
(and (eq (char-after) ?=)
(- (point) (c-point 'boi)))))
(langelem-col (c-langelem-col langelem))
donep)
(if (cdr langelem) (goto-char (cdr langelem)))
(while (and (not donep)
(< (point) (c-point 'eol)))
(skip-chars-forward "^=" (c-point 'eol))
@ -475,9 +566,39 @@ Works with: statement-cont."
(forward-char 1)
(skip-chars-forward " \t")
(setq equalp 0)))
(- (current-column) equalp langelem-col))
(vector (- (current-column) equalp)))
)))
(defun c-lineup-cascaded-calls (langelem)
"Line up \"cascaded calls\" under each other.
If the line begins with \"->\" and the preceding line ends with one or
more function calls preceded by \"->\", then the arrow is lined up with
the first of those \"->\". E.g:
result = proc->add(17)->add(18)
->add(19) + <- c-lineup-cascaded-calls
offset; <- c-lineup-cascaded-calls (inactive)
In any other situation nil is returned to allow use in list
expressions.
Works with: statement-cont, arglist-cont, arglist-cont-nonempty."
(save-excursion
(let ((bopl (c-point 'bopl)) col)
(back-to-indentation)
(when (and (looking-at "->")
(= (c-backward-token-1 1 t bopl) 0)
(eq (char-after) ?\()
(= (c-backward-token-1 3 t bopl) 0)
(looking-at "->"))
(setq col (current-column))
(while (and (= (c-backward-token-1 1 t bopl) 0)
(eq (char-after) ?\()
(= (c-backward-token-1 3 t bopl) 0)
(looking-at "->"))
(setq col (current-column)))
(vector col)))))
(defun c-lineup-template-args (langelem)
"Line up template argument lines under the first argument.
To allow this function to be used in a list expression, nil is
@ -490,7 +611,7 @@ Works with: template-args-cont."
(backward-up-list 1)
(if (and (eq (char-after) ?<)
(zerop (c-forward-token-1 1 nil (c-point 'eol))))
(- (current-column) (c-langelem-col langelem))))))
(vector (current-column))))))
(defun c-lineup-ObjC-method-call (langelem)
"Line up selector args as elisp-mode does with function args:
@ -579,10 +700,20 @@ construct.
Works with: inlambda, inexpr-statement, inexpr-class."
(save-excursion
(back-to-indentation)
(let ((res (or (c-looking-at-inexpr-block)
(if (c-safe (backward-up-list 1)
(eq (char-after) ?{))
(c-looking-at-inexpr-block)))))
(let* ((paren-state (c-parse-state))
(containing-sexp (c-most-enclosing-brace paren-state))
(res (or (c-looking-at-inexpr-block
(c-safe-position containing-sexp paren-state)
containing-sexp)
(and containing-sexp
(progn (goto-char containing-sexp)
(eq (char-after) ?{))
(progn (setq containing-sexp
(c-most-enclosing-brace paren-state
(point)))
(c-looking-at-inexpr-block
(c-safe-position containing-sexp paren-state)
containing-sexp))))))
(when res
(goto-char (cdr res))
(- (current-column)
@ -614,6 +745,134 @@ inextern-lang, innamespace."
0
c-basic-offset)))
(defun c-lineup-cpp-define (langelem)
"Line up macro continuation lines according to the indentation of
the construct preceding the macro. E.g:
v beg of preceding constr v beg of preceding constr
int dribble() {
const char msg[] = if (!running)
\"Some text.\"; error(\"Not running!\");
#define X(A, B) \ #define X(A, B) \
do { \ <-> do { \ <- c-lineup-cpp-define
printf (A, B); \ printf (A, B); \
} while (0) } while (0)
If `c-syntactic-indentation-in-macros' is non-nil, the function
returns the relative indentation to the macro start line to allow
accumulation with other offsets. E.g. in the following cases,
cpp-define-intro is combined with the statement-block-intro that comes
from the \"do {\" that hangs on the \"#define\" line:
int dribble() {
const char msg[] = if (!running)
\"Some text.\"; error(\"Not running!\");
#define X(A, B) do { \ #define X(A, B) do { \
printf (A, B); \ <-> printf (A, B); \ <- c-lineup-cpp-define
this->refs++; \ this->refs++; \
} while (0) <-> } while (0) <- c-lineup-cpp-define
The relative indentation returned by `c-lineup-cpp-define' is zero and
two, respectively, in these two examples. They are then added to the
two column indentation that statement-block-intro gives in both cases
here.
If the relative indentation is zero, then nil is returned instead.
This useful in a list expression to specify the default indentation on
the top level.
If `c-syntactic-indentation-in-macros' is nil then this function keeps
the current indentation, except for empty lines \(ignoring the ending
backslash) where it takes the indentation from the closest preceding
nonempty line in the macro. If there's no such line in the macro then
the indentation is taken from the construct preceding it, as described
above.
Works with: cpp-define-intro."
(let (offset)
(if c-syntactic-indentation-in-macros
;; Go to the macro start and do a syntactic analysis of it.
;; Then remove the cpp-macro element it should contain and
;; calculate the indentation it then would get.
(save-excursion
(c-beginning-of-macro)
(setq offset (- (c-get-syntactic-indentation
(delete '(cpp-macro) (c-guess-basic-syntax)))
(save-excursion
(back-to-indentation)
(current-column))))
(if (zerop offset)
nil
offset))
;; Do not indent syntactically inside the macro.
(save-excursion
(let ((macro-start-line (save-excursion
(goto-char (c-query-macro-start))
(beginning-of-line)
(point))))
(beginning-of-line)
;; Check every line while inside the macro.
(while (and (> (point) macro-start-line)
(looking-at "[ \t]*\\\\?$")
(= (forward-line -1) 0)))
(if (<= (point) macro-start-line)
;; If we've stepped out of the macro we take the
;; syntactic offset.
(setq offset (c-get-syntactic-indentation
(delete '(cpp-macro) (c-guess-basic-syntax))))
(setq offset (current-indentation)))
(if (zerop offset)
nil
(vector offset)))))))
;; Contributed by Kevin Ryde <user42@zip.com.au>.
(defun c-lineup-gcc-asm-reg (elem)
"Line up a gcc asm register under one on a previous line.
asm (\"foo %1, %0\\n\"
\"bar %0, %1\"
: \"=r\" (w),
\"=r\" (x)
: \"0\" (y),
\"1\" (z));
The \"x\" line is aligned to the text after the \":\" on the \"w\" line, and
similarly \"z\" under \"y\".
This is done only in an \"asm\" or \"__asm__\" block, and only to those
lines mentioned. Anywhere else `nil' is returned. The usual arrangement is
to have this routine as an extra feature at the start of arglist lineups, e.g.
(c-lineup-gcc-asm-reg c-lineup-arglist)
Works with: arglist-cont, arglist-cont-nonempty."
(let ((orig-pos (point))
alignto)
(save-excursion
(and
c-opt-asm-stmt-key
;; Find the ":" to align to. Look for this first so as to quickly
;; eliminate pretty much all cases which are not for us.
(re-search-backward "^[ \t]*:[ \t]*\\(.\\)?" (cdr elem) t)
;; Must have something after the ":".
(setq alignto (match-beginning 1))
;; Don't touch ":" lines themselves.
(progn (goto-char orig-pos)
(beginning-of-line)
(not (looking-at "^[ \t]*:")))
;; Only operate in an asm statement.
(progn (goto-char orig-pos)
(c-in-gcc-asm-p))
(vector (progn (goto-char alignto) (current-column)))))))
(defun c-lineup-dont-change (langelem)
"Do not change the indentation of the current line.
@ -663,7 +922,7 @@ indentation amount."
(setq syntax nil)
(back-to-indentation)
(if (zerop (current-column))
(insert (make-string c-label-minimum-indentation 32)))
(insert-char ?\ c-label-minimum-indentation t))
))
))))