Commit 416d3588 authored by Glenn Morris's avatar Glenn Morris
Browse files

(byte-compile-warning-types, byte-compile-warnings): Add `constants'

as an option.
(byte-compile-callargs-warn, byte-compile-arglist-warn)
(display-call-tree): Update for byte-compile-fdefinition possibly
returning `(macro lambda ...)'.  (Bug#4778)
(byte-compile-variable-ref, byte-compile-setq-default):
Respect `constants' member of byte-compile-warnings.
parent 8aedfd3b
2009-10-31 Glenn Morris <rgm@gnu.org>
* emacs-lisp/bytecomp.el (byte-compile-warning-types)
(byte-compile-warnings): Add `constants' as an option.
(byte-compile-callargs-warn, byte-compile-arglist-warn)
(display-call-tree): Update for byte-compile-fdefinition possibly
returning `(macro lambda ...)'. (Bug#4778)
(byte-compile-variable-ref, byte-compile-setq-default):
Respect `constants' member of byte-compile-warnings.
* cedet/semantic/tag.el (semantic--tag-link-list-to-buffer):
Use mapc rather than mapcar because the return value is never used.
......
......@@ -66,47 +66,7 @@
;; + correct compilation of top-level uses of macros;
;; + the ability to generate a histogram of functions called.
;; User customization variables:
;;
;; byte-compile-verbose Whether to report the function currently being
;; compiled in the echo area;
;; byte-optimize Whether to do optimizations; this may be
;; t, nil, 'source, or 'byte;
;; byte-optimize-log Whether to report (in excruciating detail)
;; exactly which optimizations have been made.
;; This may be t, nil, 'source, or 'byte;
;; byte-compile-error-on-warn Whether to stop compilation when a warning is
;; produced;
;; byte-compile-delete-errors Whether the optimizer may delete calls or
;; variable references that are side-effect-free
;; except that they may return an error.
;; byte-compile-generate-call-tree Whether to generate a histogram of
;; function calls. This can be useful for
;; finding unused functions, as well as simple
;; performance metering.
;; byte-compile-warnings List of warnings to issue, or t. May contain
;; `free-vars' (references to variables not in the
;; current lexical scope)
;; `unresolved' (calls to unknown functions)
;; `callargs' (lambda calls with args that don't
;; match the lambda's definition)
;; `redefine' (function cell redefined from
;; a macro to a lambda or vice versa,
;; or redefined to take other args)
;; `obsolete' (obsolete variables and functions)
;; `noruntime' (calls to functions only defined
;; within `eval-when-compile')
;; `cl-functions' (calls to CL functions)
;; `interactive-only' (calls to commands that are
;; not good to call from Lisp)
;; `make-local' (dubious calls to
;; `make-variable-buffer-local')
;; `mapcar' (mapcar called for effect)
;; byte-compile-compatibility Whether the compiler should
;; generate .elc files which can be loaded into
;; generic emacs 18.
;; emacs-lisp-file-regexp Regexp for the extension of source-files;
;; see also the function byte-compile-dest-file.
;; User customization variables: M-x customize-group bytecomp
;; New Features:
;;
......@@ -349,7 +309,7 @@ If it is 'byte, then only byte-level optimizations will be logged."
(defconst byte-compile-warning-types
'(redefine callargs free-vars unresolved
obsolete noruntime cl-functions interactive-only
make-local mapcar)
make-local mapcar constants)
"The list of warning types used when `byte-compile-warnings' is t.")
(defcustom byte-compile-warnings t
"List of warnings that the byte-compiler should issue (t for all).
......@@ -370,6 +330,7 @@ Elements of the list may be:
commands that normally shouldn't be called from Lisp code.
make-local calls to make-variable-buffer-local that may be incorrect.
mapcar mapcar called for effect.
constants let-binding of, or assignment to, constants/nonvariables.
If the list begins with `not', then the remaining elements specify warnings to
suppress. For example, (not mapcar) will suppress warnings about mapcar."
......@@ -380,7 +341,7 @@ suppress. For example, (not mapcar) will suppress warnings about mapcar."
(const callargs) (const redefine)
(const obsolete) (const noruntime)
(const cl-functions) (const interactive-only)
(const make-local) (const mapcar))))
(const make-local) (const mapcar) (const constants))))
;;;###autoload(put 'byte-compile-warnings 'safe-local-variable 'byte-compile-warnings-safe-p)
;;;###autoload
......@@ -1306,12 +1267,16 @@ Each function's symbol gets added to `byte-compile-noruntime-functions'."
(let* ((def (or (byte-compile-fdefinition (car form) nil)
(byte-compile-fdefinition (car form) t)))
(sig (if (and def (not (eq def t)))
(byte-compile-arglist-signature
(if (memq (car-safe def) '(declared lambda))
(nth 1 def)
(if (byte-code-function-p def)
(aref def 0)
'(&rest def))))
(progn
(and (eq (car-safe def) 'macro)
(eq (car-safe (cdr-safe def)) 'lambda)
(setq def (cdr def)))
(byte-compile-arglist-signature
(if (memq (car-safe def) '(declared lambda))
(nth 1 def)
(if (byte-code-function-p def)
(aref def 0)
'(&rest def)))))
(if (and (fboundp (car form))
(subrp (symbol-function (car form))))
(subr-arity (symbol-function (car form))))))
......@@ -1406,22 +1371,26 @@ extra args."
(defun byte-compile-arglist-warn (form macrop)
(let ((old (byte-compile-fdefinition (nth 1 form) macrop)))
(if (and old (not (eq old t)))
(let ((sig1 (byte-compile-arglist-signature
(if (eq 'lambda (car-safe old))
(nth 1 old)
(if (byte-code-function-p old)
(aref old 0)
'(&rest def)))))
(sig2 (byte-compile-arglist-signature (nth 2 form))))
(unless (byte-compile-arglist-signatures-congruent-p sig1 sig2)
(byte-compile-set-symbol-position (nth 1 form))
(byte-compile-warn
"%s %s used to take %s %s, now takes %s"
(if (eq (car form) 'defun) "function" "macro")
(nth 1 form)
(byte-compile-arglist-signature-string sig1)
(if (equal sig1 '(1 . 1)) "argument" "arguments")
(byte-compile-arglist-signature-string sig2))))
(progn
(and (eq 'macro (car-safe old))
(eq 'lambda (car-safe (cdr-safe old)))
(setq old (cdr old)))
(let ((sig1 (byte-compile-arglist-signature
(if (eq 'lambda (car-safe old))
(nth 1 old)
(if (byte-code-function-p old)
(aref old 0)
'(&rest def)))))
(sig2 (byte-compile-arglist-signature (nth 2 form))))
(unless (byte-compile-arglist-signatures-congruent-p sig1 sig2)
(byte-compile-set-symbol-position (nth 1 form))
(byte-compile-warn
"%s %s used to take %s %s, now takes %s"
(if (eq (car form) 'defun) "function" "macro")
(nth 1 form)
(byte-compile-arglist-signature-string sig1)
(if (equal sig1 '(1 . 1)) "argument" "arguments")
(byte-compile-arglist-signature-string sig2)))))
;; This is the first definition. See if previous calls are compatible.
(let ((calls (assq (nth 1 form) byte-compile-unresolved-functions))
nums sig min max)
......@@ -3046,12 +3015,13 @@ That command is designed for interactive use only" bytecomp-fn))
(if (or (not (symbolp bytecomp-var))
(byte-compile-const-symbol-p bytecomp-var
(not (eq base-op 'byte-varref))))
(byte-compile-warn
(cond ((eq base-op 'byte-varbind) "attempt to let-bind %s `%s'")
((eq base-op 'byte-varset) "variable assignment to %s `%s'")
(t "variable reference to %s `%s'"))
(if (symbolp bytecomp-var) "constant" "nonvariable")
(prin1-to-string bytecomp-var))
(if (byte-compile-warning-enabled-p 'constants)
(byte-compile-warn
(cond ((eq base-op 'byte-varbind) "attempt to let-bind %s `%s'")
((eq base-op 'byte-varset) "variable assignment to %s `%s'")
(t "variable reference to %s `%s'"))
(if (symbolp bytecomp-var) "constant" "nonvariable")
(prin1-to-string bytecomp-var)))
(and (get bytecomp-var 'byte-obsolete-variable)
(not (memq bytecomp-var byte-compile-not-obsolete-vars))
(byte-compile-warn-obsolete bytecomp-var))
......@@ -3582,12 +3552,13 @@ If it is nil, then the handler is \"byte-compile-SYMBOL.\""
setters)
(while bytecomp-args
(let ((var (car bytecomp-args)))
(if (or (not (symbolp var))
(byte-compile-const-symbol-p var t))
(byte-compile-warn
"variable assignment to %s `%s'"
(if (symbolp var) "constant" "nonvariable")
(prin1-to-string var)))
(and (or (not (symbolp var))
(byte-compile-const-symbol-p var t))
(byte-compile-warning-enabled-p 'constants)
(byte-compile-warn
"variable assignment to %s `%s'"
(if (symbolp var) "constant" "nonvariable")
(prin1-to-string var)))
(push (list 'set-default (list 'quote var) (car (cdr bytecomp-args)))
setters))
(setq bytecomp-args (cdr (cdr bytecomp-args))))
......@@ -4329,12 +4300,22 @@ invoked interactively."
(message "Generating call tree...(finding uncalled functions...)")
(setq rest byte-compile-call-tree)
(let ((uncalled nil))
(let (uncalled def)
(while rest
(or (nth 1 (car rest))
(null (setq f (car (car rest))))
(functionp (byte-compile-fdefinition f t))
(commandp (byte-compile-fdefinition f nil))
(null (setq f (caar rest)))
(progn
(setq def (byte-compile-fdefinition f t))
(and (eq (car-safe def) 'macro)
(eq (car-safe (cdr-safe def)) 'lambda)
(setq def (cdr def)))
(functionp def))
(progn
(setq def (byte-compile-fdefinition f nil))
(and (eq (car-safe def) 'macro)
(eq (car-safe (cdr-safe def)) 'lambda)
(setq def (cdr def)))
(commandp def))
(setq uncalled (cons f uncalled)))
(setq rest (cdr rest)))
(if uncalled
......@@ -4342,10 +4323,8 @@ invoked interactively."
(insert "Noninteractive functions not known to be called:\n ")
(setq p (point))
(insert (mapconcat 'symbol-name (nreverse uncalled) ", "))
(fill-region-as-paragraph p (point)))))
)
(message "Generating call tree...done.")
))
(fill-region-as-paragraph p (point))))))
(message "Generating call tree...done.")))
;;;###autoload
......
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