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* lisp/progmodes/cc-defs.el: Expose c-lanf-defconst's expressions to the

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byte-compiler.
(lookup-syntax-properties): Silence byte-compiler.
(c-lang-defconst): Quote the code with `lambda' rather than with
`quote'.
(c-lang-const): Avoid unneeded setq.
(c-lang-constants-under-evaluation): Add docstring.
(c-lang--novalue): New constant.
(c-find-assignment-for-mode): Use it instead of c-lang-constants.
(c-get-lang-constant): Same here.
Get the mode's value using `funcall' now that the code is quoted
with `lambda'.
This commit is contained in:
Stefan Monnier
2014-08-28 16:37:13 -04:00
parent 0f8fb0b98a
commit 16f1e25b9c
2 changed files with 124 additions and 103 deletions
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69
lisp/ChangeLog
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@@ -1,3 +1,18 @@
2014-08-28 Stefan Monnier <monnier@iro.umontreal.ca>
* progmodes/cc-defs.el: Expose c-lanf-defconst's expressions to the
byte-compiler.
(lookup-syntax-properties): Silence byte-compiler.
(c-lang-defconst): Quote the code with `lambda' rather than with
`quote'.
(c-lang-const): Avoid unneeded setq.
(c-lang-constants-under-evaluation): Add docstring.
(c-lang--novalue): New constant.
(c-find-assignment-for-mode): Use it instead of c-lang-constants.
(c-get-lang-constant): Same here.
Get the mode's value using `funcall' now that the code is quoted
with `lambda'.
2014-08-28 Michael Albinus <michael.albinus@gmx.de>
* net/tramp.el (tramp-handle-shell-command): Use `display-buffer'.
@@ -67,8 +82,8 @@
* progmodes/cc-fonts.el (c-font-lock-declarations): Handle the
"decltype" keyword.
(c-font-lock-c++-new): Handle "decltype" constructions.
* progmodes/cc-langs.el (c-auto-ops, c-auto-ops-re): New
c-lang-defconsts/defvars.
* progmodes/cc-langs.el (c-auto-ops, c-auto-ops-re):
New c-lang-defconsts/defvars.
(c-haskell-op, c-haskell-op-re): New c-lang-defconsts/defvars.
(c-typeof-kwds, c-typeof-key): New c-lang-defconsts/defvars.
(c-typeless-decl-kwds): Append "auto" onto the C++ value.
@@ -79,8 +94,8 @@
off from c->-op-cont-re.
(c->-op-cont-tokens): Change to use the above.
(c->-op-without->-cont-regexp): New lang-const.
* progmodes/cc-engine.el (c-forward-<>-arglist-recur): Use
c->-op-without->-cont-regexp in place of c->-op-cont-tokens.
* progmodes/cc-engine.el (c-forward-<>-arglist-recur):
Use c->-op-without->-cont-regexp in place of c->-op-cont-tokens.
2014-08-23 Alan Mackenzie <acm@muc.de>
@@ -90,8 +105,8 @@
2014-08-21 Eli Zaretskii <eliz@gnu.org>
* textmodes/texnfo-upd.el (texinfo-specific-section-type): Don't
recognize a Top node if there are other sectioning commands
* textmodes/texnfo-upd.el (texinfo-specific-section-type):
Don't recognize a Top node if there are other sectioning commands
earlier in the Texinfo file. This fixes a bug in
texinfo-make-menu and avoids inflooping in
texinfo-all-menus-update when they are invoked on texinfo.texi.
@@ -193,7 +208,7 @@
2014-08-12 Stefan Monnier <monnier@iro.umontreal.ca>
* mpc.el (mpc-reorder): Don't bother splitting the "active"s elements
* mpc.el (mpc-reorder): Don't bother splitting the "active" elements
to the first part if they're the same as the selection.
2014-08-12 Lars Magne Ingebrigtsen <larsi@gnus.org>
@@ -337,8 +352,8 @@
2014-08-07 Leo Liu <sdl.web@gmail.com>
* help.el (temp-buffer-setup-hook,temp-buffer-show-hook): Revert
change on 2014-03-22.
* help.el (temp-buffer-setup-hook,temp-buffer-show-hook):
Revert change on 2014-03-22.
2014-08-06 Ulf Jasper <ulf.jasper@web.de>
@@ -371,8 +386,8 @@
* progmodes/python.el: Fix completions inside (i)pdb.
(python-shell-completion-pdb-string-code): Make obsolete.
(python-shell-completion-get-completions): Use
python-shell-completion-string-code resending setup code
(python-shell-completion-get-completions):
Use python-shell-completion-string-code resending setup code
continuously for (i)pdb.
2014-08-04 Paul Eggert <eggert@cs.ucla.edu>
@@ -399,8 +414,8 @@
2014-08-02 Alan Mackenzie <acm@muc.de>
Fix confusion in C++ file caused by comma in "= {1,2},". Bug
#17756.
Fix confusion in C++ file caused by comma in "= {1,2},".
Bug #17756.
* progmodes/cc-engine.el (c-beginning-of-statement-1): In checking
for a statement boundary marked by "}", check there's no "="
before the "{".
@@ -429,8 +444,8 @@
2014-07-30 Christophe Deleuze <christophe.deleuze@free.fr> (tiny change)
* calendar/icalendar.el (icalendar--decode-isodatetime): Use
actual current-time-zone when converting to local time. (Bug#15408)
* calendar/icalendar.el (icalendar--decode-isodatetime):
Use actual current-time-zone when converting to local time. (Bug#15408)
2014-07-29 Martin Rudalics <rudalics@gmx.at>
@@ -541,17 +556,17 @@
2014-07-28 Fabián Ezequiel Gallina <fgallina@gnu.org>
Grab all Python process output before inferior-python-mode hooks.
* progmodes/python.el (inferior-python-mode): Call
accept-process-output and sit-for to ensure all output for process
* progmodes/python.el (inferior-python-mode):
Call accept-process-output and sit-for to ensure all output for process
has been received before running hooks.
(python-shell-internal-get-or-create-process): Cleanup
accept-process-output and sit-for calls.
(python-shell-internal-get-or-create-process):
Cleanup accept-process-output and sit-for calls.
2014-07-28 Fabián Ezequiel Gallina <fgallina@gnu.org>
More robust shell startup and code setup.
* progmodes/python.el (python-shell-make-comint): Remove
accept-process-output call.
* progmodes/python.el (python-shell-make-comint):
Remove accept-process-output call.
(python-shell-get-buffer): Return current buffer if major-mode is
inferior-python-mode.
(python-shell-get-or-create-process): Use it.
@@ -560,8 +575,8 @@
2014-07-27 Eli Zaretskii <eliz@gnu.org>
* scroll-bar.el (scroll-bar-toolkit-horizontal-scroll): Add
rudimentary support for bidirectional text.
* scroll-bar.el (scroll-bar-toolkit-horizontal-scroll):
Add rudimentary support for bidirectional text.
2014-07-27 Martin Rudalics <rudalics@gmx.at>
@@ -935,8 +950,8 @@
(linum-update-window): Use it to adjust margin to linum's width.
* leim/quail/sisheng.el (sisheng-list): Don't bother with-case-table.
* eshell/em-smart.el (eshell-smart-scroll-window): Use
with-selected-window.
* eshell/em-smart.el (eshell-smart-scroll-window):
Use with-selected-window.
* xt-mouse.el (xterm-mouse-translate-1): Intern drag event (bug#17894).
Remove also pointless window&mark manipulation.
@@ -3968,7 +3983,7 @@
2014-03-23 Lars Ingebrigtsen <larsi@gnus.org>
* calendar/parse-time.el (parse-time-iso8601-regexp)
(parse-iso8601-time-string): Copied from `url-dav' so that we can use
(parse-iso8601-time-string): Copy from `url-dav' so that we can use
it more generally.
2014-03-23 Lars Ingebrigtsen <larsi@gnus.org>
@@ -5570,7 +5585,7 @@
* help-at-pt.el (help-at-pt-string, help-at-pt-maybe-display):
Also try to display local help from just before point.
2014-02-02 Alan Mackenzie <bug-cc-mode@gnu.org>
2014-02-02 Alan Mackenzie <acm@muc.de>
c-parse-state. Don't "append-lower-brace-pair" in certain
circumstances. Also fix an obscure bug where "\\s!" shouldn't be

158
lisp/progmodes/cc-defs.el
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@@ -1556,6 +1556,8 @@ non-nil, a caret is prepended to invert the set."
(cc-bytecomp-defvar open-paren-in-column-0-is-defun-start)
(defvar lookup-syntax-properties) ;XEmacs.
(defconst c-emacs-features
(let (list)
@@ -1801,18 +1803,18 @@ system."
(error "Unknown base mode `%s'" base-mode))
(put mode 'c-fallback-mode base-mode))
(defvar c-lang-constants (make-vector 151 0))
;; This obarray is a cache to keep track of the language constants
;; defined by `c-lang-defconst' and the evaluated values returned by
;; `c-lang-const'. It's mostly used at compile time but it's not
;; stored in compiled files.
;;
;; The obarray contains all the language constants as symbols. The
;; value cells hold the evaluated values as alists where each car is
;; the mode name symbol and the corresponding cdr is the evaluated
;; value in that mode. The property lists hold the source definitions
;; and other miscellaneous data. The obarray might also contain
;; various other symbols, but those don't have any variable bindings.
(defvar c-lang-constants (make-vector 151 0)
"Obarray used as a cache to keep track of the language constants.
The constants stored are those defined by `c-lang-defconst' and the values
computed by `c-lang-const'. It's mostly used at compile time but it's not
stored in compiled files.
The obarray contains all the language constants as symbols. The
value cells hold the evaluated values as alists where each car is
the mode name symbol and the corresponding cdr is the evaluated
value in that mode. The property lists hold the source definitions
and other miscellaneous data. The obarray might also contain
various other symbols, but those don't have any variable bindings.")
(defvar c-lang-const-expansion nil)
@@ -1897,7 +1899,7 @@ constant. A file is identified by its base name."
pre-files)
(or (symbolp name)
(error "Not a symbol: %s" name))
(error "Not a symbol: %S" name))
(when (stringp (car-safe args))
;; The docstring is hardly used anywhere since there's no normal
@@ -1907,7 +1909,7 @@ constant. A file is identified by its base name."
(setq args (cdr args)))
(or args
(error "No assignments in `c-lang-defconst' for %s" name))
(error "No assignments in `c-lang-defconst' for %S" name))
;; Rework ARGS to an association list to make it easier to handle.
;; It's reversed at the same time to make it easier to implement
@@ -1921,17 +1923,17 @@ constant. A file is identified by its base name."
((listp (car args))
(mapcar (lambda (lang)
(or (symbolp lang)
(error "Not a list of symbols: %s"
(error "Not a list of symbols: %S"
(car args)))
(intern (concat (symbol-name lang)
"-mode")))
(car args)))
(t (error "Not a symbol or a list of symbols: %s"
(t (error "Not a symbol or a list of symbols: %S"
(car args)))))
val)
(or (cdr args)
(error "No value for %s" (car args)))
(error "No value for %S" (car args)))
(setq args (cdr args)
val (car args))
@@ -1945,7 +1947,7 @@ constant. A file is identified by its base name."
;; dependencies on the `c-lang-const's in VAL.)
(setq val (macroexpand-all val))
(setq bindings (cons (cons assigned-mode val) bindings)
(setq bindings `(cons (cons ',assigned-mode (lambda () ,val)) ,bindings)
args (cdr args))))
;; Compile in the other files that have provided source
@@ -1957,7 +1959,7 @@ constant. A file is identified by its base name."
(mapcar 'car (get sym 'source))))
`(eval-and-compile
(c-define-lang-constant ',name ',bindings
(c-define-lang-constant ',name ,bindings
,@(and pre-files `(',pre-files))))))
(put 'c-lang-defconst 'lisp-indent-function 1)
@@ -2022,19 +2024,16 @@ language. NAME and LANG are not evaluated so they should not be
quoted."
(or (symbolp name)
(error "Not a symbol: %s" name))
(error "Not a symbol: %S" name))
(or (symbolp lang)
(error "Not a symbol: %s" lang))
(error "Not a symbol: %S" lang))
(let ((sym (intern (symbol-name name) c-lang-constants))
mode source-files args)
(mode (when lang (intern (concat (symbol-name lang) "-mode")))))
(when lang
(setq mode (intern (concat (symbol-name lang) "-mode")))
(unless (get mode 'c-mode-prefix)
(error
"Unknown language %S since it got no `c-mode-prefix' property"
(symbol-name lang))))
(or (get mode 'c-mode-prefix) (null mode)
(error "Unknown language %S: no `c-mode-prefix' property"
lang))
(if (eq c-lang-const-expansion 'immediate)
;; No need to find out the source file(s) when we evaluate
@@ -2042,49 +2041,56 @@ quoted."
;; `source' property.
`',(c-get-lang-constant name nil mode)
(let ((file (c-get-current-file)))
(if file (setq file (intern file)))
;; Get the source file(s) that must be loaded to get the value
;; of the constant. If the symbol isn't defined yet we assume
;; that its definition will come later in this file, and thus
;; are no file dependencies needed.
(setq source-files (nreverse
;; Reverse to get the right load order.
(apply 'nconc
(mapcar (lambda (elem)
(if (eq file (car elem))
nil ; Exclude our own file.
(list (car elem))))
(get sym 'source))))))
(let ((source-files
(let ((file (c-get-current-file)))
(if file (setq file (intern file)))
;; Get the source file(s) that must be loaded to get the value
;; of the constant. If the symbol isn't defined yet we assume
;; that its definition will come later in this file, and thus
;; are no file dependencies needed.
(nreverse
;; Reverse to get the right load order.
(apply 'nconc
(mapcar (lambda (elem)
(if (eq file (car elem))
nil ; Exclude our own file.
(list (car elem))))
(get sym 'source))))))
;; Make some effort to do a compact call to
;; `c-get-lang-constant' since it will be compiled in.
(args (and mode `(',mode))))
;; Make some effort to do a compact call to
;; `c-get-lang-constant' since it will be compiled in.
(setq args (and mode `(',mode)))
(if (or source-files args)
(setq args (cons (and source-files `',source-files)
args)))
(if (or source-files args)
(push (and source-files `',source-files) args))
(if (or (eq c-lang-const-expansion 'call)
(and (not c-lang-const-expansion)
(not mode))
load-in-progress
(not (boundp 'byte-compile-dest-file))
(not (stringp byte-compile-dest-file)))
;; Either a straight call is requested in the context, or
;; we're in an "uncontrolled" context and got no language,
;; or we're not being byte compiled so the compile time
;; stuff below is unnecessary.
`(c-get-lang-constant ',name ,@args)
(if (or (eq c-lang-const-expansion 'call)
(and (not c-lang-const-expansion)
(not mode))
load-in-progress
(not (boundp 'byte-compile-dest-file))
(not (stringp byte-compile-dest-file)))
;; Either a straight call is requested in the context, or
;; we're in an "uncontrolled" context and got no language,
;; or we're not being byte compiled so the compile time
;; stuff below is unnecessary.
`(c-get-lang-constant ',name ,@args)
;; Being compiled. If the loading and compiling version is
;; the same we use a value that is evaluated at compile time,
;; otherwise it's evaluated at runtime.
`(if (eq c-version-sym ',c-version-sym)
(cc-eval-when-compile
(c-get-lang-constant ',name ,@args))
(c-get-lang-constant ',name ,@args))))))
;; Being compiled. If the loading and compiling version is
;; the same we use a value that is evaluated at compile time,
;; otherwise it's evaluated at runtime.
`(if (eq c-version-sym ',c-version-sym)
(cc-eval-when-compile
(c-get-lang-constant ',name ,@args))
(c-get-lang-constant ',name ,@args)))))))
(defvar c-lang-constants-under-evaluation nil)
(defvar c-lang-constants-under-evaluation nil
"Alist of constants in the process of being evaluated.
The `cdr' of each entry indicates how far we've looked in the list
of definitions, so that the def for var FOO in c-mode can be defined in
terms of the def for that same var FOO (which will then rely on the
fallback definition for all modes, to break the cycle).")
(defconst c-lang--novalue "novalue")
(defun c-get-lang-constant (name &optional source-files mode)
;; Used by `c-lang-const'.
@@ -2150,7 +2156,7 @@ quoted."
;; mode might have an explicit entry before that.
(eq (setq value (c-find-assignment-for-mode
(cdr source-pos) mode nil name))
c-lang-constants)
c-lang--novalue)
;; Try again with the fallback mode from the
;; original position. Note that
;; `c-buffer-is-cc-mode' still is the real mode if
@@ -2158,22 +2164,22 @@ quoted."
(eq (setq value (c-find-assignment-for-mode
(setcdr source-pos backup-source-pos)
fallback t name))
c-lang-constants)))
c-lang--novalue)))
;; A simple lookup with no fallback mode.
(eq (setq value (c-find-assignment-for-mode
(cdr source-pos) mode t name))
c-lang-constants))
c-lang--novalue))
(error
"`%s' got no (prior) value in %s (might be a cyclic reference)"
"`%s' got no (prior) value in %S (might be a cyclic reference)"
name mode))
(condition-case err
(setq value (eval value))
(setq value (funcall value))
(error
;; Print a message to aid in locating the error. We don't
;; print the error itself since that will be done later by
;; some caller higher up.
(message "Eval error in the `c-lang-defconst' for `%s' in %s:"
(message "Eval error in the `c-lang-defconst' for `%S' in %s:"
sym mode)
(makunbound sym)
(signal (car err) (cdr err))))
@@ -2181,13 +2187,13 @@ quoted."
(set sym (cons (cons mode value) (symbol-value sym)))
value))))
(defun c-find-assignment-for-mode (source-pos mode match-any-lang name)
(defun c-find-assignment-for-mode (source-pos mode match-any-lang _name)
;; Find the first assignment entry that applies to MODE at or after
;; SOURCE-POS. If MATCH-ANY-LANG is non-nil, entries with `t' as
;; the language list are considered to match, otherwise they don't.
;; On return SOURCE-POS is updated to point to the next assignment
;; after the returned one. If no assignment is found,
;; `c-lang-constants' is returned as a magic value.
;; `c-lang--novalue' is returned as a magic value.
;;
;; SOURCE-POS is a vector that points out a specific assignment in
;; the double alist that's used in the `source' property. The first
@@ -2243,7 +2249,7 @@ quoted."
match-any-lang)
(throw 'found (cdr assignment))))
c-lang-constants)))
c-lang--novalue)))
(defun c-lang-major-mode-is (mode)
;; `c-major-mode-is' expands to a call to this function inside