]> code.delx.au - gnu-emacs/blobdiff - lisp/progmodes/cc-engine.el
Merge from origin/emacs-25
[gnu-emacs] / lisp / progmodes / cc-engine.el
index eb015acf3200bbf3cd18c7faa4ea7f5e7a51a8f7..d19d2dacda12ab9d1c1a7e573763a9a16277a059 100644 (file)
@@ -1543,7 +1543,7 @@ comment at the start of cc-engine.el for more info."
 ;;    two newlines with horizontal whitespace between them.
 ;;
 ;;    The reason to include the first following char is to cope with
-;;    "rung positions" that doesn't have any ordinary whitespace.  If
+;;    "rung positions" that don't have any ordinary whitespace.  If
 ;;    `c-is-sws' is put on a token character it does not have
 ;;    `c-in-sws' set simultaneously.  That's the only case when that
 ;;    can occur, and the reason for not extending the `c-in-sws'
@@ -1714,7 +1714,9 @@ comment at the start of cc-engine.el for more info."
     ;; if it's anything that can't start syntactic ws, so we can bail out
     ;; early in the majority of cases when there just are a few ws chars.
     (skip-chars-forward " \t\n\r\f\v")
-    (when (looking-at c-syntactic-ws-start)
+    (when (or (looking-at c-syntactic-ws-start)
+             (and c-opt-cpp-prefix
+                  (looking-at c-noise-macro-name-re)))
 
       (setq rung-end-pos (min (1+ (point)) (point-max)))
       (if (setq rung-is-marked (text-property-any rung-pos rung-end-pos
@@ -1733,6 +1735,10 @@ comment at the start of cc-engine.el for more info."
       (with-silent-modifications
       (while
          (progn
+           ;; In the following while form, we move over a "ladder" and
+           ;; following simple WS each time round the loop, appending the WS
+           ;; onto the ladder, joining adjacent ladders, and terminating when
+           ;; there is no more WS or we reach EOB.
            (while
                (when (and rung-is-marked
                           (get-text-property (point) 'c-in-sws))
@@ -1776,6 +1782,7 @@ comment at the start of cc-engine.el for more info."
                            (setq rung-pos (point)
                                  last-put-in-sws-pos rung-pos)))
 
+           ;; Now move over any comments (x)or a CPP construct.
            (setq simple-ws-end (point))
            (c-forward-comments)
 
@@ -1801,6 +1808,13 @@ comment at the start of cc-engine.el for more info."
              (forward-line 1)
              (setq safe-start t)
              ;; Don't cache at eob in case the buffer is narrowed.
+             (not (eobp)))
+
+            ((and c-opt-cpp-prefix
+                  (looking-at c-noise-macro-name-re))
+             ;; Skip over a noise macro.
+             (goto-char (match-end 1))
+             (setq safe-start t)
              (not (eobp)))))
 
        ;; We've searched over a piece of non-white syntactic ws.  See if this
@@ -1907,8 +1921,11 @@ comment at the start of cc-engine.el for more info."
     (when (and (not (bobp))
               (save-excursion
                 (backward-char)
-                (looking-at c-syntactic-ws-end)))
-
+                (or (looking-at c-syntactic-ws-end)
+                    (and c-opt-cpp-prefix
+                         (looking-at c-symbol-char-key)
+                         (progn (c-beginning-of-current-token)
+                                (looking-at c-noise-macro-name-re))))))
       ;; Try to find a rung position in the simple ws preceding point, so that
       ;; we can get a cache hit even if the last bit of the simple ws has
       ;; changed recently.
@@ -1927,6 +1944,9 @@ comment at the start of cc-engine.el for more info."
       (with-silent-modifications
       (while
          (progn
+           ;; Each time round the next while form, we move back over a ladder
+           ;; and append any simple WS preceding it, if possible joining with
+           ;; the previous ladder.
            (while
                (when (and rung-is-marked
                           (not (bobp))
@@ -2035,6 +2055,15 @@ comment at the start of cc-engine.el for more info."
              ;; narrowed out, and we can't risk marking the simple ws
              ;; at the end of it.
              (goto-char next-rung-pos)
+             t)
+
+            ((and c-opt-cpp-prefix
+                  (save-excursion
+                    (and (< (skip-syntax-backward "w_") 0)
+                         (progn (setq next-rung-pos (point))
+                                (looking-at c-noise-macro-name-re)))))
+             ;; Skipped over a noise macro
+             (goto-char next-rung-pos)
              t)))
 
        ;; We've searched over a piece of non-white syntactic ws.  See if this
@@ -5811,13 +5840,16 @@ comment at the start of cc-engine.el for more info."
                               `(c-forward-type)
                             `(c-forward-name)))
                nil
-             (and (looking-at c-keywords-regexp)
-                  (c-forward-keyword-clause 1))))
+             (cond ((looking-at c-keywords-regexp)
+                    (c-forward-keyword-clause 1))
+                   ((and c-opt-cpp-prefix
+                         (looking-at c-noise-macro-with-parens-name-re))
+                    (c-forward-noise-clause)))))
      (when (memq res '(t known found prefix maybe))
        (when c-record-type-identifiers
-        ,(if (eq type 'type)
-             `(c-record-type-id c-last-identifier-range)
-           `(c-record-ref-id c-last-identifier-range)))
+        ,(if (eq type 'type)
+             `(c-record-type-id c-last-identifier-range)
+           `(c-record-ref-id c-last-identifier-range)))
        t)))
 
 (defmacro c-forward-id-comma-list (type update-safe-pos)
@@ -5835,6 +5867,17 @@ comment at the start of cc-engine.el for more info."
                 (c-forward-syntactic-ws)
                 (c-forward-keyword-prefixed-id ,type)))))
 
+(defun c-forward-noise-clause ()
+  ;; Point is at a c-noise-macro-with-parens-names macro identifier.  Go
+  ;; forward over this name, any parenthesis expression which follows it, and
+  ;; any syntactic WS, ending up at the next token.  If there is an unbalanced
+  ;; paren expression, leave point at it.  Always Return t.
+  (c-forward-token-2)
+  (if (and (eq (char-after) ?\()
+          (c-go-list-forward))
+      (c-forward-syntactic-ws))
+  t)
+
 (defun c-forward-keyword-clause (match)
   ;; Submatch MATCH in the current match data is assumed to surround a
   ;; token.  If it's a keyword, move over it and any immediately
@@ -5984,7 +6027,6 @@ comment at the start of cc-engine.el for more info."
                  ;; `nconc' doesn't mind that the tail of
                  ;; `c-record-found-types' is t.
                  (nconc c-record-found-types c-record-type-identifiers)))
-           (if (c-major-mode-is 'java-mode) (c-fontify-recorded-types-and-refs))
          t)
 
       (goto-char start)
@@ -6030,28 +6072,31 @@ comment at the start of cc-engine.el for more info."
                (progn
                  (c-forward-syntactic-ws)
                  (when (or (and c-record-type-identifiers all-types)
-                           (c-major-mode-is 'java-mode))
-                   ;; All encountered identifiers are types, so set the
-                   ;; promote flag and parse the type.
-                   (progn
-                     (c-forward-syntactic-ws)
-                     (if (looking-at "\\?")
-                         (forward-char)
-                       (when (looking-at c-identifier-start)
+                           (not (equal c-inside-<>-type-key "\\(\\<\\>\\)")))
+                   (c-forward-syntactic-ws)
+                   (cond
+                    ((eq (char-after) ??)
+                     (forward-char))
+                    ((and (looking-at c-identifier-start)
+                          (not (looking-at c-keywords-regexp)))
+                     (if (or (and all-types c-record-type-identifiers)
+                             (c-major-mode-is 'java-mode))
+                         ;; All encountered identifiers are types, so set the
+                         ;; promote flag and parse the type.
                          (let ((c-promote-possible-types t)
                                (c-record-found-types t))
-                           (c-forward-type))))
+                           (c-forward-type))
+                       (c-forward-token-2))))
 
-                     (c-forward-syntactic-ws)
+                   (c-forward-syntactic-ws)
 
-                     (when (or (looking-at "extends")
-                               (looking-at "super"))
-                       (forward-word-strictly)
-                       (c-forward-syntactic-ws)
-                       (let ((c-promote-possible-types t)
-                             (c-record-found-types t))
-                         (c-forward-type)
-                         (c-forward-syntactic-ws)))))
+                   (when (looking-at c-inside-<>-type-key)
+                     (goto-char (match-end 1))
+                     (c-forward-syntactic-ws)
+                     (let ((c-promote-possible-types t)
+                           (c-record-found-types t))
+                       (c-forward-type))
+                     (c-forward-syntactic-ws)))
 
                  (setq pos (point))    ; e.g. first token inside the '<'
 
@@ -6372,9 +6417,7 @@ comment at the start of cc-engine.el for more info."
              ((and c-recognize-<>-arglists
                    (eq (char-after) ?<))
               ;; Maybe an angle bracket arglist.
-              (when (let ((c-record-type-identifiers t)
-                          (c-record-found-types t)
-                          (c-last-identifier-range))
+              (when (let (c-last-identifier-range)
                       (c-forward-<>-arglist nil))
 
                 (c-forward-syntactic-ws)
@@ -6468,6 +6511,14 @@ comment at the start of cc-engine.el for more info."
                                     ; "typedef".
       (goto-char (match-end 1))
       (c-forward-syntactic-ws)
+
+      (while (cond
+             ((looking-at c-decl-hangon-key)
+              (c-forward-keyword-clause 1))
+             ((and c-opt-cpp-prefix
+                   (looking-at c-noise-macro-with-parens-name-re))
+              (c-forward-noise-clause))))
+
       (setq pos (point))
 
       (setq name-res (c-forward-name))
@@ -6875,31 +6926,39 @@ comment at the start of cc-engine.el for more info."
           ;; of the while.  These are, e.g. "*" in "int *foo" or "(" and
           ;; "*" in "int (*foo) (void)" (Note similar code in
           ;; `c-forward-decl-or-cast-1'.)
-          (while (and (looking-at c-type-decl-prefix-key)
-                      (if (and (c-major-mode-is 'c++-mode)
-                               (match-beginning 3))
-                          ;; If the third submatch matches in C++ then
-                          ;; we're looking at an identifier that's a
-                          ;; prefix only if it specifies a member pointer.
-                          (progn
-                            (setq id-start (point))
-                            (c-forward-name)
-                            (if (looking-at "\\(::\\)")
-                                ;; We only check for a trailing "::" and
-                                ;; let the "*" that should follow be
-                                ;; matched in the next round.
-                                t
-                              ;; It turned out to be the real identifier,
-                              ;; so flag that and stop.
-                              (setq got-identifier t)
-                              nil))
-                        t))
-            (if (eq (char-after) ?\()
-                (progn
-                  (setq paren-depth (1+ paren-depth))
-                  (forward-char))
-              (goto-char (match-end 1)))
-            (c-forward-syntactic-ws))
+             (while
+                 (cond
+                  ((looking-at c-decl-hangon-key)
+                   (c-forward-keyword-clause 1))
+                  ((and c-opt-cpp-prefix
+                        (looking-at c-noise-macro-with-parens-name-re))
+                   (c-forward-noise-clause))
+                  ((and (looking-at c-type-decl-prefix-key)
+                        (if (and (c-major-mode-is 'c++-mode)
+                                 (match-beginning 3))
+                            ;; If the third submatch matches in C++ then
+                            ;; we're looking at an identifier that's a
+                            ;; prefix only if it specifies a member pointer.
+                            (progn
+                              (setq id-start (point))
+                              (c-forward-name)
+                              (if (looking-at "\\(::\\)")
+                                  ;; We only check for a trailing "::" and
+                                  ;; let the "*" that should follow be
+                                  ;; matched in the next round.
+                                  t
+                                ;; It turned out to be the real identifier,
+                                ;; so flag that and stop.
+                                (setq got-identifier t)
+                                nil))
+                          t))
+                   (if (eq (char-after) ?\()
+                       (progn
+                         (setq paren-depth (1+ paren-depth))
+                         (forward-char))
+                     (goto-char (match-end 1)))
+                   (c-forward-syntactic-ws)
+                   t)))
 
           ;; If we haven't passed the identifier already, do it now.
           (unless got-identifier
@@ -6924,9 +6983,13 @@ comment at the start of cc-engine.el for more info."
 
         ;; Skip over any trailing bit, such as "__attribute__".
         (progn
-          (when (looking-at c-decl-hangon-key)
-            (c-forward-keyword-clause 1))
-          (<= (point) limit))
+             (while (cond
+                     ((looking-at c-decl-hangon-key)
+                      (c-forward-keyword-clause 1))
+                     ((and c-opt-cpp-prefix
+                           (looking-at c-noise-macro-with-parens-name-re))
+                      (c-forward-noise-clause))))
+             (<= (point) limit))
 
         ;; Search syntactically to the end of the declarator (";",
         ;; ",", a closing paren, eob etc) or to the beginning of an
@@ -7090,6 +7153,9 @@ comment at the start of cc-engine.el for more info."
        cast-end
        ;; Have we got a new-style C++11 "auto"?
        new-style-auto
+       ;; Set when the symbol before `preceding-token-end' is known to
+       ;; terminate the previous construct, or when we're at point-min.
+       at-decl-start
        ;; Save `c-record-type-identifiers' and
        ;; `c-record-ref-identifiers' since ranges are recorded
        ;; speculatively and should be thrown away if it turns out
@@ -7097,6 +7163,15 @@ comment at the start of cc-engine.el for more info."
        (save-rec-type-ids c-record-type-identifiers)
        (save-rec-ref-ids c-record-ref-identifiers))
 
+    (save-excursion
+      (goto-char preceding-token-end)
+      (setq at-decl-start
+           (or (bobp)
+               (let ((tok-end (point)))
+                 (c-backward-token-2)
+                 (member (buffer-substring-no-properties (point) tok-end)
+                         c-pre-start-tokens)))))
+
     (while (c-forward-annotation)
       (c-forward-syntactic-ws))
 
@@ -7105,18 +7180,25 @@ comment at the start of cc-engine.el for more info."
     ;; macros like __INLINE__, so we recognize both types and known
     ;; specifiers after them too.
     (while
-       (let* ((start (point)) kwd-sym kwd-clause-end found-type)
+       (let* ((start (point)) kwd-sym kwd-clause-end found-type noise-start)
 
+         (cond
          ;; Look for a specifier keyword clause.
-         (when (or (looking-at c-prefix-spec-kwds-re) ;FIXME!!! includes auto
-                   (and (c-major-mode-is 'java-mode)
-                        (looking-at "@[A-Za-z0-9]+")))
-           (if (save-match-data (looking-at c-typedef-key))
-               (setq at-typedef t))
+          ((or (looking-at c-prefix-spec-kwds-re)
+               (and (c-major-mode-is 'java-mode)
+                (looking-at "@[A-Za-z0-9]+")))
+           (save-match-data
+             (if (looking-at c-typedef-key)
+                 (setq at-typedef t)))
            (setq kwd-sym (c-keyword-sym (match-string 1)))
            (save-excursion
              (c-forward-keyword-clause 1)
              (setq kwd-clause-end (point))))
+          ((and c-opt-cpp-prefix
+                (looking-at c-noise-macro-with-parens-name-re))
+           (setq noise-start (point))
+           (c-forward-noise-clause)
+           (setq kwd-clause-end (point))))
 
          (when (setq found-type (c-forward-type t)) ; brace-block-too
            ;; Found a known or possible type or a prefix of a known type.
@@ -7154,16 +7236,17 @@ comment at the start of cc-engine.el for more info."
                  backup-at-type-decl nil
                  backup-maybe-typeless nil))
 
-         (if kwd-sym
+         (if (or kwd-sym noise-start)
              (progn
                ;; Handle known specifier keywords and
                ;; `c-decl-hangon-kwds' which can occur after known
                ;; types.
 
-               (if (c-keyword-member kwd-sym 'c-decl-hangon-kwds)
-                   ;; It's a hang-on keyword that can occur anywhere.
+               (if (or (c-keyword-member kwd-sym 'c-decl-hangon-kwds)
+                       noise-start)
+                   ;; It's a hang-on keyword or noise clause that can occur
+                   ;; anywhere.
                    (progn
-                     (setq at-decl-or-cast t)
                      (if at-type
                          ;; Move the identifier start position if
                          ;; we've passed a type.
@@ -7215,8 +7298,12 @@ comment at the start of cc-engine.el for more info."
       ;; If a known type was found, we still need to skip over any
       ;; hangon keyword clauses after it.  Otherwise it has already
       ;; been done in the loop above.
-      (while (looking-at c-decl-hangon-key)
-       (c-forward-keyword-clause 1))
+      (while
+         (cond ((looking-at c-decl-hangon-key)
+                (c-forward-keyword-clause 1))
+               ((and c-opt-cpp-prefix
+                     (looking-at c-noise-macro-with-parens-name-re))
+                (c-forward-noise-clause))))
       (setq id-start (point)))
 
      ((eq at-type 'prefix)
@@ -7347,36 +7434,42 @@ comment at the start of cc-engine.el for more info."
               (setq got-identifier (c-forward-name))
               (setq name-start pos)))
 
-      ;; Skip over type decl suffix operators.
-      (while (if (looking-at c-type-decl-suffix-key)
+      ;; Skip over type decl suffix operators and trailing noise macros.
+      (while
+         (cond
+          ((and c-opt-cpp-prefix
+                (looking-at c-noise-macro-with-parens-name-re))
+           (c-forward-noise-clause))
+
+          ((looking-at c-type-decl-suffix-key)
+           (if (eq (char-after) ?\))
+               (when (> paren-depth 0)
+                 (setq paren-depth (1- paren-depth))
+                 (forward-char)
+                 t)
+             (when (if (save-match-data (looking-at "\\s("))
+                       (c-safe (c-forward-sexp 1) t)
+                     (goto-char (match-end 1))
+                     t)
+               (when (and (not got-suffix-after-parens)
+                          (= paren-depth 0))
+                 (setq got-suffix-after-parens (match-beginning 0)))
+               (setq got-suffix t))))
 
-                (if (eq (char-after) ?\))
-                    (when (> paren-depth 0)
-                      (setq paren-depth (1- paren-depth))
-                      (forward-char)
-                      t)
-                  (when (if (save-match-data (looking-at "\\s("))
-                            (c-safe (c-forward-sexp 1) t)
-                          (goto-char (match-end 1))
-                          t)
-                    (when (and (not got-suffix-after-parens)
-                               (= paren-depth 0))
-                      (setq got-suffix-after-parens (match-beginning 0)))
-                    (setq got-suffix t)))
-
-              ;; No suffix matched.  We might have matched the
-              ;; identifier as a type and the open paren of a
-              ;; function arglist as a type decl prefix.  In that
-              ;; case we should "backtrack": Reinterpret the last
-              ;; type as the identifier, move out of the arglist and
-              ;; continue searching for suffix operators.
-              ;;
-              ;; Do this even if there's no preceding type, to cope
-              ;; with old style function declarations in K&R C,
-              ;; (con|de)structors in C++ and `c-typeless-decl-kwds'
-              ;; style declarations.  That isn't applicable in an
-              ;; arglist context, though.
-              (when (and (= paren-depth 1)
+          (t
+           ;; No suffix matched.  We might have matched the
+           ;; identifier as a type and the open paren of a
+           ;; function arglist as a type decl prefix.  In that
+           ;; case we should "backtrack": Reinterpret the last
+           ;; type as the identifier, move out of the arglist and
+           ;; continue searching for suffix operators.
+           ;;
+           ;; Do this even if there's no preceding type, to cope
+           ;; with old style function declarations in K&R C,
+           ;; (con|de)structors in C++ and `c-typeless-decl-kwds'
+           ;; style declarations.  That isn't applicable in an
+           ;; arglist context, though.
+           (when (and (= paren-depth 1)
                          (not got-prefix-before-parens)
                          (not (eq at-type t))
                          (or backup-at-type
@@ -7388,7 +7481,7 @@ comment at the start of cc-engine.el for more info."
                          (eq (char-before pos) ?\)))
                 (c-fdoc-shift-type-backward)
                 (goto-char pos)
-                t))
+                t)))
 
        (c-forward-syntactic-ws))
 
@@ -7697,12 +7790,15 @@ comment at the start of cc-engine.el for more info."
                          at-type
                          (or at-decl-end (looking-at "=[^=]"))
                          (not context)
-                         (not got-suffix))
-                ;; Got something like "foo * bar;".  Since we're not inside an
-                ;; arglist it would be a meaningless expression because the
-                ;; result isn't used.  We therefore choose to recognize it as
-                ;; a declaration.  Do not allow a suffix since it could then
-                ;; be a function call.
+                         (or (not got-suffix)
+                             at-decl-start))
+                ;; Got something like "foo * bar;".  Since we're not inside
+                ;; an arglist it would be a meaningless expression because
+                ;; the result isn't used.  We therefore choose to recognize
+                ;; it as a declaration.  We only allow a suffix (which makes
+                ;; the construct look like a function call) when
+                ;; `at-decl-start' provides additional evidence that we do
+                ;; have a declaration.
                 (throw 'at-decl-or-cast t))
 
               ;; CASE 17
@@ -8986,6 +9082,12 @@ comment at the start of cc-engine.el for more info."
           t)
          ((looking-at c-after-brace-list-key) t)
          ((looking-at c-brace-list-key) nil)
+         ((eq (char-after) ?\()
+          (and (eq (c-backward-token-2) 0)
+               (or (looking-at c-decl-hangon-key)
+                   (and c-opt-cpp-prefix
+                        (looking-at c-noise-macro-with-parens-name-re)))))
+
          ((and c-recognize-<>-arglists
                (eq (char-after) ?<)
                (looking-at "\\s("))
@@ -10246,9 +10348,12 @@ comment at the start of cc-engine.el for more info."
           ;; CASE 5A.3: brace list open
           ((save-excursion
              (c-beginning-of-decl-1 lim)
-             (while (looking-at c-specifier-key)
-               (goto-char (match-end 1))
-               (c-forward-syntactic-ws indent-point))
+             (while (cond
+                     ((looking-at c-specifier-key)
+                      (c-forward-keyword-clause 1))
+                     ((and c-opt-cpp-prefix
+                           (looking-at c-noise-macro-with-parens-name-re))
+                      (c-forward-noise-clause))))
              (setq placeholder (c-point 'boi))
              (or (consp special-brace-list)
                  (and (or (save-excursion
@@ -10300,9 +10405,12 @@ comment at the start of cc-engine.el for more info."
           (t
            (save-excursion
              (c-beginning-of-decl-1 lim)
-             (while (looking-at c-specifier-key)
-               (goto-char (match-end 1))
-               (c-forward-syntactic-ws indent-point))
+             (while (cond
+                     ((looking-at c-specifier-key)
+                      (c-forward-keyword-clause 1))
+                     ((and c-opt-cpp-prefix
+                           (looking-at c-noise-macro-with-parens-name-re))
+                      (c-forward-noise-clause))))
              (c-add-syntax 'defun-open (c-point 'boi))
              ;; Bogus to use bol here, but it's the legacy.  (Resolved,
              ;; 2007-11-09)
@@ -10933,9 +11041,12 @@ comment at the start of cc-engine.el for more info."
            (c-beginning-of-statement-1
             (c-safe-position (1- containing-sexp) paren-state))
            (c-forward-token-2 0)
-           (while (looking-at c-specifier-key)
-             (goto-char (match-end 1))
-             (c-forward-syntactic-ws))
+           (while (cond
+                   ((looking-at c-specifier-key)
+                    (c-forward-keyword-clause 1))
+                   ((and c-opt-cpp-prefix
+                         (looking-at c-noise-macro-with-parens-name-re))
+                    (c-forward-noise-clause))))
            (c-add-syntax 'brace-list-open (c-point 'boi))))
 
         ;; CASE 9B: brace-list-close brace