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2653 lines
97 KiB
EmacsLisp
2653 lines
97 KiB
EmacsLisp
;;; cl-macs.el --- Common Lisp macros -*-byte-compile-dynamic: t;-*-
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;; Copyright (C) 1993 Free Software Foundation, Inc.
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;; Author: Dave Gillespie <daveg@synaptics.com>
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;; Version: 2.02
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;; Keywords: extensions
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; These are extensions to Emacs Lisp that provide a degree of
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;; Common Lisp compatibility, beyond what is already built-in
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;; in Emacs Lisp.
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;;
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;; This package was written by Dave Gillespie; it is a complete
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;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
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;;
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;; Bug reports, comments, and suggestions are welcome!
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;; This file contains the portions of the Common Lisp extensions
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;; package which should be autoloaded, but need only be present
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;; if the compiler or interpreter is used---this file is not
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;; necessary for executing compiled code.
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;; See cl.el for Change Log.
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;;; Code:
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(or (memq 'cl-19 features)
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(error "Tried to load `cl-macs' before `cl'!"))
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(defmacro cl-pop2 (place)
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(list 'prog1 (list 'car (list 'cdr place))
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(list 'setq place (list 'cdr (list 'cdr place)))))
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(put 'cl-pop2 'edebug-form-spec 'edebug-sexps)
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(defvar cl-optimize-safety)
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(defvar cl-optimize-speed)
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;;; This kludge allows macros which use cl-transform-function-property
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;;; to be called at compile-time.
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(require
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(progn
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(or (fboundp 'cl-transform-function-property)
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(defalias 'cl-transform-function-property
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(function (lambda (n p f)
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(list 'put (list 'quote n) (list 'quote p)
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(list 'function (cons 'lambda f)))))))
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(car (or features (setq features (list 'cl-kludge))))))
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;;; Initialization.
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(defvar cl-old-bc-file-form nil)
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(defun cl-compile-time-init ()
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(run-hooks 'cl-hack-bytecomp-hook))
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;;; Some predicates for analyzing Lisp forms. These are used by various
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;;; macro expanders to optimize the results in certain common cases.
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(defconst cl-simple-funcs '(car cdr nth aref elt if and or + - 1+ 1- min max
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car-safe cdr-safe progn prog1 prog2))
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(defconst cl-safe-funcs '(* / % length memq list vector vectorp
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< > <= >= = error))
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;;; Check if no side effects, and executes quickly.
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(defun cl-simple-expr-p (x &optional size)
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(or size (setq size 10))
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(if (and (consp x) (not (memq (car x) '(quote function function*))))
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(and (symbolp (car x))
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(or (memq (car x) cl-simple-funcs)
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(get (car x) 'side-effect-free))
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(progn
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(setq size (1- size))
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(while (and (setq x (cdr x))
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(setq size (cl-simple-expr-p (car x) size))))
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(and (null x) (>= size 0) size)))
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(and (> size 0) (1- size))))
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(defun cl-simple-exprs-p (xs)
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(while (and xs (cl-simple-expr-p (car xs)))
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(setq xs (cdr xs)))
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(not xs))
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;;; Check if no side effects.
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(defun cl-safe-expr-p (x)
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(or (not (and (consp x) (not (memq (car x) '(quote function function*)))))
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(and (symbolp (car x))
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(or (memq (car x) cl-simple-funcs)
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(memq (car x) cl-safe-funcs)
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(get (car x) 'side-effect-free))
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(progn
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(while (and (setq x (cdr x)) (cl-safe-expr-p (car x))))
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(null x)))))
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;;; Check if constant (i.e., no side effects or dependencies).
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(defun cl-const-expr-p (x)
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(cond ((consp x)
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(or (eq (car x) 'quote)
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(and (memq (car x) '(function function*))
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(or (symbolp (nth 1 x))
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(and (eq (car-safe (nth 1 x)) 'lambda) 'func)))))
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((symbolp x) (and (memq x '(nil t)) t))
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(t t)))
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(defun cl-const-exprs-p (xs)
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(while (and xs (cl-const-expr-p (car xs)))
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(setq xs (cdr xs)))
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(not xs))
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(defun cl-const-expr-val (x)
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(and (eq (cl-const-expr-p x) t) (if (consp x) (nth 1 x) x)))
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(defun cl-expr-access-order (x v)
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(if (cl-const-expr-p x) v
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(if (consp x)
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(progn
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(while (setq x (cdr x)) (setq v (cl-expr-access-order (car x) v)))
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v)
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(if (eq x (car v)) (cdr v) '(t)))))
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;;; Count number of times X refers to Y. Return nil for 0 times.
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(defun cl-expr-contains (x y)
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(cond ((equal y x) 1)
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((and (consp x) (not (memq (car-safe x) '(quote function function*))))
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(let ((sum 0))
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(while x
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(setq sum (+ sum (or (cl-expr-contains (pop x) y) 0))))
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(and (> sum 0) sum)))
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(t nil)))
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(defun cl-expr-contains-any (x y)
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(while (and y (not (cl-expr-contains x (car y)))) (pop y))
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y)
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;;; Check whether X may depend on any of the symbols in Y.
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(defun cl-expr-depends-p (x y)
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(and (not (cl-const-expr-p x))
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(or (not (cl-safe-expr-p x)) (cl-expr-contains-any x y))))
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;;; Symbols.
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(defvar *gensym-counter*)
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(defun gensym (&optional arg)
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"Generate a new uninterned symbol.
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The name is made by appending a number to PREFIX, default \"G\"."
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(let ((prefix (if (stringp arg) arg "G"))
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(num (if (integerp arg) arg
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(prog1 *gensym-counter*
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(setq *gensym-counter* (1+ *gensym-counter*))))))
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(make-symbol (format "%s%d" prefix num))))
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(defun gentemp (&optional arg)
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"Generate a new interned symbol with a unique name.
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The name is made by appending a number to PREFIX, default \"G\"."
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(let ((prefix (if (stringp arg) arg "G"))
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name)
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(while (intern-soft (setq name (format "%s%d" prefix *gensym-counter*)))
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(setq *gensym-counter* (1+ *gensym-counter*)))
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(intern name)))
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;;; Program structure.
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(defmacro defun* (name args &rest body)
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"Define NAME as a function.
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Like normal `defun', except ARGLIST allows full Common Lisp conventions,
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and BODY is implicitly surrounded by (block NAME ...).
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\(fn NAME ARGLIST [DOCSTRING] BODY...)"
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(let* ((res (cl-transform-lambda (cons args body) name))
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(form (list* 'defun name (cdr res))))
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(if (car res) (list 'progn (car res) form) form)))
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(defmacro defmacro* (name args &rest body)
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"Define NAME as a macro.
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Like normal `defmacro', except ARGLIST allows full Common Lisp conventions,
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and BODY is implicitly surrounded by (block NAME ...).
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\(fn NAME ARGLIST [DOCSTRING] BODY...)"
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(let* ((res (cl-transform-lambda (cons args body) name))
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(form (list* 'defmacro name (cdr res))))
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(if (car res) (list 'progn (car res) form) form)))
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(defmacro function* (func)
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"Introduce a function.
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Like normal `function', except that if argument is a lambda form, its
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ARGLIST allows full Common Lisp conventions."
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(if (eq (car-safe func) 'lambda)
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(let* ((res (cl-transform-lambda (cdr func) 'cl-none))
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(form (list 'function (cons 'lambda (cdr res)))))
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(if (car res) (list 'progn (car res) form) form))
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(list 'function func)))
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(defun cl-transform-function-property (func prop form)
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(let ((res (cl-transform-lambda form func)))
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(append '(progn) (cdr (cdr (car res)))
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(list (list 'put (list 'quote func) (list 'quote prop)
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(list 'function (cons 'lambda (cdr res))))))))
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(defconst lambda-list-keywords
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'(&optional &rest &key &allow-other-keys &aux &whole &body &environment))
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(defvar cl-macro-environment nil)
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(defvar bind-block) (defvar bind-defs) (defvar bind-enquote)
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(defvar bind-inits) (defvar bind-lets) (defvar bind-forms)
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(defun cl-transform-lambda (form bind-block)
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(let* ((args (car form)) (body (cdr form)) (orig-args args)
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(bind-defs nil) (bind-enquote nil)
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(bind-inits nil) (bind-lets nil) (bind-forms nil)
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(header nil) (simple-args nil))
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(while (or (stringp (car body)) (eq (car-safe (car body)) 'interactive))
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(push (pop body) header))
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(setq args (if (listp args) (copy-list args) (list '&rest args)))
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(let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p)))))
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(if (setq bind-defs (cadr (memq '&cl-defs args)))
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(setq args (delq '&cl-defs (delq bind-defs args))
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bind-defs (cadr bind-defs)))
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(if (setq bind-enquote (memq '&cl-quote args))
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(setq args (delq '&cl-quote args)))
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(if (memq '&whole args) (error "&whole not currently implemented"))
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(let* ((p (memq '&environment args)) (v (cadr p)))
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(if p (setq args (nconc (delq (car p) (delq v args))
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(list '&aux (list v 'cl-macro-environment))))))
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(while (and args (symbolp (car args))
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(not (memq (car args) '(nil &rest &body &key &aux)))
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(not (and (eq (car args) '&optional)
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(or bind-defs (consp (cadr args))))))
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(push (pop args) simple-args))
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(or (eq bind-block 'cl-none)
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(setq body (list (list* 'block bind-block body))))
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(if (null args)
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(list* nil (nreverse simple-args) (nconc (nreverse header) body))
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(if (memq '&optional simple-args) (push '&optional args))
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(cl-do-arglist args nil (- (length simple-args)
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(if (memq '&optional simple-args) 1 0)))
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(setq bind-lets (nreverse bind-lets))
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(list* (and bind-inits (list* 'eval-when '(compile load eval)
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(nreverse bind-inits)))
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(nconc (nreverse simple-args)
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(list '&rest (car (pop bind-lets))))
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(nconc (let ((hdr (nreverse header)))
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(require 'help-fns)
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(cons (help-add-fundoc-usage
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(if (stringp (car hdr)) (pop hdr)) orig-args)
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hdr))
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(list (nconc (list 'let* bind-lets)
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(nreverse bind-forms) body)))))))
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(defun cl-do-arglist (args expr &optional num) ; uses bind-*
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(if (nlistp args)
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(if (or (memq args lambda-list-keywords) (not (symbolp args)))
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(error "Invalid argument name: %s" args)
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(push (list args expr) bind-lets))
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(setq args (copy-list args))
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(let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p)))))
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(let ((p (memq '&body args))) (if p (setcar p '&rest)))
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(if (memq '&environment args) (error "&environment used incorrectly"))
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(let ((save-args args)
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(restarg (memq '&rest args))
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(safety (if (cl-compiling-file) cl-optimize-safety 3))
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(keys nil)
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(laterarg nil) (exactarg nil) minarg)
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(or num (setq num 0))
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(if (listp (cadr restarg))
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(setq restarg (gensym "--rest--"))
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(setq restarg (cadr restarg)))
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(push (list restarg expr) bind-lets)
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(if (eq (car args) '&whole)
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(push (list (cl-pop2 args) restarg) bind-lets))
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(let ((p args))
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(setq minarg restarg)
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(while (and p (not (memq (car p) lambda-list-keywords)))
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(or (eq p args) (setq minarg (list 'cdr minarg)))
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(setq p (cdr p)))
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(if (memq (car p) '(nil &aux))
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(setq minarg (list '= (list 'length restarg)
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(length (ldiff args p)))
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exactarg (not (eq args p)))))
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(while (and args (not (memq (car args) lambda-list-keywords)))
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(let ((poparg (list (if (or (cdr args) (not exactarg)) 'pop 'car)
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restarg)))
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(cl-do-arglist
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(pop args)
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(if (or laterarg (= safety 0)) poparg
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(list 'if minarg poparg
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(list 'signal '(quote wrong-number-of-arguments)
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(list 'list (and (not (eq bind-block 'cl-none))
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(list 'quote bind-block))
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(list 'length restarg)))))))
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(setq num (1+ num) laterarg t))
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(while (and (eq (car args) '&optional) (pop args))
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(while (and args (not (memq (car args) lambda-list-keywords)))
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(let ((arg (pop args)))
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(or (consp arg) (setq arg (list arg)))
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(if (cddr arg) (cl-do-arglist (nth 2 arg) (list 'and restarg t)))
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(let ((def (if (cdr arg) (nth 1 arg)
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(or (car bind-defs)
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(nth 1 (assq (car arg) bind-defs)))))
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(poparg (list 'pop restarg)))
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(and def bind-enquote (setq def (list 'quote def)))
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(cl-do-arglist (car arg)
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(if def (list 'if restarg poparg def) poparg))
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(setq num (1+ num))))))
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(if (eq (car args) '&rest)
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(let ((arg (cl-pop2 args)))
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(if (consp arg) (cl-do-arglist arg restarg)))
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(or (eq (car args) '&key) (= safety 0) exactarg
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(push (list 'if restarg
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(list 'signal '(quote wrong-number-of-arguments)
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(list 'list
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(and (not (eq bind-block 'cl-none))
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(list 'quote bind-block))
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(list '+ num (list 'length restarg)))))
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bind-forms)))
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(while (and (eq (car args) '&key) (pop args))
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(while (and args (not (memq (car args) lambda-list-keywords)))
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(let ((arg (pop args)))
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(or (consp arg) (setq arg (list arg)))
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(let* ((karg (if (consp (car arg)) (caar arg)
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(intern (format ":%s" (car arg)))))
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(varg (if (consp (car arg)) (cadar arg) (car arg)))
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(def (if (cdr arg) (cadr arg)
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(or (car bind-defs) (cadr (assq varg bind-defs)))))
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(look (list 'memq (list 'quote karg) restarg)))
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(and def bind-enquote (setq def (list 'quote def)))
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(if (cddr arg)
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(let* ((temp (or (nth 2 arg) (gensym)))
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(val (list 'car (list 'cdr temp))))
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(cl-do-arglist temp look)
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(cl-do-arglist varg
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(list 'if temp
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(list 'prog1 val (list 'setq temp t))
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def)))
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(cl-do-arglist
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varg
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(list 'car
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(list 'cdr
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(if (null def)
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look
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(list 'or look
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(if (eq (cl-const-expr-p def) t)
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(list
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'quote
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(list nil (cl-const-expr-val def)))
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(list 'list nil def))))))))
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(push karg keys)))))
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(setq keys (nreverse keys))
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(or (and (eq (car args) '&allow-other-keys) (pop args))
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(null keys) (= safety 0)
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(let* ((var (gensym "--keys--"))
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(allow '(:allow-other-keys))
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(check (list
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'while var
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(list
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'cond
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(list (list 'memq (list 'car var)
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(list 'quote (append keys allow)))
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(list 'setq var (list 'cdr (list 'cdr var))))
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(list (list 'car
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(list 'cdr
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(list 'memq (cons 'quote allow)
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restarg)))
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(list 'setq var nil))
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(list t
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(list
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'error
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(format "Keyword argument %%s not one of %s"
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keys)
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(list 'car var)))))))
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(push (list 'let (list (list var restarg)) check) bind-forms)))
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(while (and (eq (car args) '&aux) (pop args))
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(while (and args (not (memq (car args) lambda-list-keywords)))
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(if (consp (car args))
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(if (and bind-enquote (cadar args))
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(cl-do-arglist (caar args)
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(list 'quote (cadr (pop args))))
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(cl-do-arglist (caar args) (cadr (pop args))))
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(cl-do-arglist (pop args) nil))))
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(if args (error "Malformed argument list %s" save-args)))))
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(defun cl-arglist-args (args)
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(if (nlistp args) (list args)
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(let ((res nil) (kind nil) arg)
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(while (consp args)
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(setq arg (pop args))
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(if (memq arg lambda-list-keywords) (setq kind arg)
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(if (eq arg '&cl-defs) (pop args)
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(and (consp arg) kind (setq arg (car arg)))
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(and (consp arg) (cdr arg) (eq kind '&key) (setq arg (cadr arg)))
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(setq res (nconc res (cl-arglist-args arg))))))
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(nconc res (and args (list args))))))
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(defmacro destructuring-bind (args expr &rest body)
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(let* ((bind-lets nil) (bind-forms nil) (bind-inits nil)
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(bind-defs nil) (bind-block 'cl-none))
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(cl-do-arglist (or args '(&aux)) expr)
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(append '(progn) bind-inits
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(list (nconc (list 'let* (nreverse bind-lets))
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(nreverse bind-forms) body)))))
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;;; The `eval-when' form.
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|
(defvar cl-not-toplevel nil)
|
|
|
|
(defmacro eval-when (when &rest body)
|
|
"Control when BODY is evaluated.
|
|
If `compile' is in WHEN, BODY is evaluated when compiled at top-level.
|
|
If `load' is in WHEN, BODY is evaluated when loaded after top-level compile.
|
|
If `eval' is in WHEN, BODY is evaluated when interpreted or at non-top-level.
|
|
|
|
\(fn (WHEN...) BODY...)"
|
|
(if (and (fboundp 'cl-compiling-file) (cl-compiling-file)
|
|
(not cl-not-toplevel) (not (boundp 'for-effect))) ; horrible kludge
|
|
(let ((comp (or (memq 'compile when) (memq :compile-toplevel when)))
|
|
(cl-not-toplevel t))
|
|
(if (or (memq 'load when) (memq :load-toplevel when))
|
|
(if comp (cons 'progn (mapcar 'cl-compile-time-too body))
|
|
(list* 'if nil nil body))
|
|
(progn (if comp (eval (cons 'progn body))) nil)))
|
|
(and (or (memq 'eval when) (memq :execute when))
|
|
(cons 'progn body))))
|
|
|
|
(defun cl-compile-time-too (form)
|
|
(or (and (symbolp (car-safe form)) (get (car-safe form) 'byte-hunk-handler))
|
|
(setq form (macroexpand
|
|
form (cons '(eval-when) byte-compile-macro-environment))))
|
|
(cond ((eq (car-safe form) 'progn)
|
|
(cons 'progn (mapcar 'cl-compile-time-too (cdr form))))
|
|
((eq (car-safe form) 'eval-when)
|
|
(let ((when (nth 1 form)))
|
|
(if (or (memq 'eval when) (memq :execute when))
|
|
(list* 'eval-when (cons 'compile when) (cddr form))
|
|
form)))
|
|
(t (eval form) form)))
|
|
|
|
(defmacro load-time-value (form &optional read-only)
|
|
"Like `progn', but evaluates the body at load time.
|
|
The result of the body appears to the compiler as a quoted constant."
|
|
(if (cl-compiling-file)
|
|
(let* ((temp (gentemp "--cl-load-time--"))
|
|
(set (list 'set (list 'quote temp) form)))
|
|
(if (and (fboundp 'byte-compile-file-form-defmumble)
|
|
(boundp 'this-kind) (boundp 'that-one))
|
|
(fset 'byte-compile-file-form
|
|
(list 'lambda '(form)
|
|
(list 'fset '(quote byte-compile-file-form)
|
|
(list 'quote
|
|
(symbol-function 'byte-compile-file-form)))
|
|
(list 'byte-compile-file-form (list 'quote set))
|
|
'(byte-compile-file-form form)))
|
|
(print set (symbol-value 'outbuffer)))
|
|
(list 'symbol-value (list 'quote temp)))
|
|
(list 'quote (eval form))))
|
|
|
|
|
|
;;; Conditional control structures.
|
|
|
|
(defmacro case (expr &rest clauses)
|
|
"Eval EXPR and choose from CLAUSES on that value.
|
|
Each clause looks like (KEYLIST BODY...). EXPR is evaluated and compared
|
|
against each key in each KEYLIST; the corresponding BODY is evaluated.
|
|
If no clause succeeds, case returns nil. A single atom may be used in
|
|
place of a KEYLIST of one atom. A KEYLIST of `t' or `otherwise' is
|
|
allowed only in the final clause, and matches if no other keys match.
|
|
Key values are compared by `eql'."
|
|
(let* ((temp (if (cl-simple-expr-p expr 3) expr (gensym)))
|
|
(head-list nil)
|
|
(body (cons
|
|
'cond
|
|
(mapcar
|
|
(function
|
|
(lambda (c)
|
|
(cons (cond ((memq (car c) '(t otherwise)) t)
|
|
((eq (car c) 'ecase-error-flag)
|
|
(list 'error "ecase failed: %s, %s"
|
|
temp (list 'quote (reverse head-list))))
|
|
((listp (car c))
|
|
(setq head-list (append (car c) head-list))
|
|
(list 'member* temp (list 'quote (car c))))
|
|
(t
|
|
(if (memq (car c) head-list)
|
|
(error "Duplicate key in case: %s"
|
|
(car c)))
|
|
(push (car c) head-list)
|
|
(list 'eql temp (list 'quote (car c)))))
|
|
(or (cdr c) '(nil)))))
|
|
clauses))))
|
|
(if (eq temp expr) body
|
|
(list 'let (list (list temp expr)) body))))
|
|
|
|
(defmacro ecase (expr &rest clauses)
|
|
"Like `case', but error if no case fits.
|
|
`otherwise'-clauses are not allowed."
|
|
(list* 'case expr (append clauses '((ecase-error-flag)))))
|
|
|
|
(defmacro typecase (expr &rest clauses)
|
|
"Evals EXPR, chooses from CLAUSES on that value.
|
|
Each clause looks like (TYPE BODY...). EXPR is evaluated and, if it
|
|
satisfies TYPE, the corresponding BODY is evaluated. If no clause succeeds,
|
|
typecase returns nil. A TYPE of `t' or `otherwise' is allowed only in the
|
|
final clause, and matches if no other keys match."
|
|
(let* ((temp (if (cl-simple-expr-p expr 3) expr (gensym)))
|
|
(type-list nil)
|
|
(body (cons
|
|
'cond
|
|
(mapcar
|
|
(function
|
|
(lambda (c)
|
|
(cons (cond ((eq (car c) 'otherwise) t)
|
|
((eq (car c) 'ecase-error-flag)
|
|
(list 'error "etypecase failed: %s, %s"
|
|
temp (list 'quote (reverse type-list))))
|
|
(t
|
|
(push (car c) type-list)
|
|
(cl-make-type-test temp (car c))))
|
|
(or (cdr c) '(nil)))))
|
|
clauses))))
|
|
(if (eq temp expr) body
|
|
(list 'let (list (list temp expr)) body))))
|
|
|
|
(defmacro etypecase (expr &rest clauses)
|
|
"Like `typecase', but error if no case fits.
|
|
`otherwise'-clauses are not allowed."
|
|
(list* 'typecase expr (append clauses '((ecase-error-flag)))))
|
|
|
|
|
|
;;; Blocks and exits.
|
|
|
|
(defmacro block (name &rest body)
|
|
"Define a lexically-scoped block named NAME.
|
|
NAME may be any symbol. Code inside the BODY forms can call `return-from'
|
|
to jump prematurely out of the block. This differs from `catch' and `throw'
|
|
in two respects: First, the NAME is an unevaluated symbol rather than a
|
|
quoted symbol or other form; and second, NAME is lexically rather than
|
|
dynamically scoped: Only references to it within BODY will work. These
|
|
references may appear inside macro expansions, but not inside functions
|
|
called from BODY."
|
|
(if (cl-safe-expr-p (cons 'progn body)) (cons 'progn body)
|
|
(list 'cl-block-wrapper
|
|
(list* 'catch (list 'quote (intern (format "--cl-block-%s--" name)))
|
|
body))))
|
|
|
|
(defvar cl-active-block-names nil)
|
|
|
|
(put 'cl-block-wrapper 'byte-compile 'cl-byte-compile-block)
|
|
(defun cl-byte-compile-block (cl-form)
|
|
(if (fboundp 'byte-compile-form-do-effect) ; Check for optimizing compiler
|
|
(progn
|
|
(let* ((cl-entry (cons (nth 1 (nth 1 (nth 1 cl-form))) nil))
|
|
(cl-active-block-names (cons cl-entry cl-active-block-names))
|
|
(cl-body (byte-compile-top-level
|
|
(cons 'progn (cddr (nth 1 cl-form))))))
|
|
(if (cdr cl-entry)
|
|
(byte-compile-form (list 'catch (nth 1 (nth 1 cl-form)) cl-body))
|
|
(byte-compile-form cl-body))))
|
|
(byte-compile-form (nth 1 cl-form))))
|
|
|
|
(put 'cl-block-throw 'byte-compile 'cl-byte-compile-throw)
|
|
(defun cl-byte-compile-throw (cl-form)
|
|
(let ((cl-found (assq (nth 1 (nth 1 cl-form)) cl-active-block-names)))
|
|
(if cl-found (setcdr cl-found t)))
|
|
(byte-compile-normal-call (cons 'throw (cdr cl-form))))
|
|
|
|
(defmacro return (&optional result)
|
|
"Return from the block named nil.
|
|
This is equivalent to `(return-from nil RESULT)'."
|
|
(list 'return-from nil result))
|
|
|
|
(defmacro return-from (name &optional result)
|
|
"Return from the block named NAME.
|
|
This jump out to the innermost enclosing `(block NAME ...)' form,
|
|
returning RESULT from that form (or nil if RESULT is omitted).
|
|
This is compatible with Common Lisp, but note that `defun' and
|
|
`defmacro' do not create implicit blocks as they do in Common Lisp."
|
|
(let ((name2 (intern (format "--cl-block-%s--" name))))
|
|
(list 'cl-block-throw (list 'quote name2) result)))
|
|
|
|
|
|
;;; The "loop" macro.
|
|
|
|
(defvar args) (defvar loop-accum-var) (defvar loop-accum-vars)
|
|
(defvar loop-bindings) (defvar loop-body) (defvar loop-destr-temps)
|
|
(defvar loop-finally) (defvar loop-finish-flag) (defvar loop-first-flag)
|
|
(defvar loop-initially) (defvar loop-map-form) (defvar loop-name)
|
|
(defvar loop-result) (defvar loop-result-explicit)
|
|
(defvar loop-result-var) (defvar loop-steps) (defvar loop-symbol-macs)
|
|
|
|
(defmacro loop (&rest args)
|
|
"The Common Lisp `loop' macro.
|
|
Valid clauses are:
|
|
for VAR from/upfrom/downfrom NUM to/upto/downto/above/below NUM by NUM,
|
|
for VAR in LIST by FUNC, for VAR on LIST by FUNC, for VAR = INIT then EXPR,
|
|
for VAR across ARRAY, repeat NUM, with VAR = INIT, while COND, until COND,
|
|
always COND, never COND, thereis COND, collect EXPR into VAR,
|
|
append EXPR into VAR, nconc EXPR into VAR, sum EXPR into VAR,
|
|
count EXPR into VAR, maximize EXPR into VAR, minimize EXPR into VAR,
|
|
if COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...],
|
|
unless COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...],
|
|
do EXPRS..., initially EXPRS..., finally EXPRS..., return EXPR,
|
|
finally return EXPR, named NAME.
|
|
|
|
\(fn CLAUSE...)"
|
|
(if (not (memq t (mapcar 'symbolp (delq nil (delq t (copy-list args))))))
|
|
(list 'block nil (list* 'while t args))
|
|
(let ((loop-name nil) (loop-bindings nil)
|
|
(loop-body nil) (loop-steps nil)
|
|
(loop-result nil) (loop-result-explicit nil)
|
|
(loop-result-var nil) (loop-finish-flag nil)
|
|
(loop-accum-var nil) (loop-accum-vars nil)
|
|
(loop-initially nil) (loop-finally nil)
|
|
(loop-map-form nil) (loop-first-flag nil)
|
|
(loop-destr-temps nil) (loop-symbol-macs nil))
|
|
(setq args (append args '(cl-end-loop)))
|
|
(while (not (eq (car args) 'cl-end-loop)) (cl-parse-loop-clause))
|
|
(if loop-finish-flag
|
|
(push (list (list loop-finish-flag t)) loop-bindings))
|
|
(if loop-first-flag
|
|
(progn (push (list (list loop-first-flag t)) loop-bindings)
|
|
(push (list 'setq loop-first-flag nil) loop-steps)))
|
|
(let* ((epilogue (nconc (nreverse loop-finally)
|
|
(list (or loop-result-explicit loop-result))))
|
|
(ands (cl-loop-build-ands (nreverse loop-body)))
|
|
(while-body (nconc (cadr ands) (nreverse loop-steps)))
|
|
(body (append
|
|
(nreverse loop-initially)
|
|
(list (if loop-map-form
|
|
(list 'block '--cl-finish--
|
|
(subst
|
|
(if (eq (car ands) t) while-body
|
|
(cons (list 'or (car ands)
|
|
'(return-from --cl-finish--
|
|
nil))
|
|
while-body))
|
|
'--cl-map loop-map-form))
|
|
(list* 'while (car ands) while-body)))
|
|
(if loop-finish-flag
|
|
(if (equal epilogue '(nil)) (list loop-result-var)
|
|
(list (list 'if loop-finish-flag
|
|
(cons 'progn epilogue) loop-result-var)))
|
|
epilogue))))
|
|
(if loop-result-var (push (list loop-result-var) loop-bindings))
|
|
(while loop-bindings
|
|
(if (cdar loop-bindings)
|
|
(setq body (list (cl-loop-let (pop loop-bindings) body t)))
|
|
(let ((lets nil))
|
|
(while (and loop-bindings
|
|
(not (cdar loop-bindings)))
|
|
(push (car (pop loop-bindings)) lets))
|
|
(setq body (list (cl-loop-let lets body nil))))))
|
|
(if loop-symbol-macs
|
|
(setq body (list (list* 'symbol-macrolet loop-symbol-macs body))))
|
|
(list* 'block loop-name body)))))
|
|
|
|
(defun cl-parse-loop-clause () ; uses args, loop-*
|
|
(let ((word (pop args))
|
|
(hash-types '(hash-key hash-keys hash-value hash-values))
|
|
(key-types '(key-code key-codes key-seq key-seqs
|
|
key-binding key-bindings)))
|
|
(cond
|
|
|
|
((null args)
|
|
(error "Malformed `loop' macro"))
|
|
|
|
((eq word 'named)
|
|
(setq loop-name (pop args)))
|
|
|
|
((eq word 'initially)
|
|
(if (memq (car args) '(do doing)) (pop args))
|
|
(or (consp (car args)) (error "Syntax error on `initially' clause"))
|
|
(while (consp (car args))
|
|
(push (pop args) loop-initially)))
|
|
|
|
((eq word 'finally)
|
|
(if (eq (car args) 'return)
|
|
(setq loop-result-explicit (or (cl-pop2 args) '(quote nil)))
|
|
(if (memq (car args) '(do doing)) (pop args))
|
|
(or (consp (car args)) (error "Syntax error on `finally' clause"))
|
|
(if (and (eq (caar args) 'return) (null loop-name))
|
|
(setq loop-result-explicit (or (nth 1 (pop args)) '(quote nil)))
|
|
(while (consp (car args))
|
|
(push (pop args) loop-finally)))))
|
|
|
|
((memq word '(for as))
|
|
(let ((loop-for-bindings nil) (loop-for-sets nil) (loop-for-steps nil)
|
|
(ands nil))
|
|
(while
|
|
(let ((var (or (pop args) (gensym))))
|
|
(setq word (pop args))
|
|
(if (eq word 'being) (setq word (pop args)))
|
|
(if (memq word '(the each)) (setq word (pop args)))
|
|
(if (memq word '(buffer buffers))
|
|
(setq word 'in args (cons '(buffer-list) args)))
|
|
(cond
|
|
|
|
((memq word '(from downfrom upfrom to downto upto
|
|
above below by))
|
|
(push word args)
|
|
(if (memq (car args) '(downto above))
|
|
(error "Must specify `from' value for downward loop"))
|
|
(let* ((down (or (eq (car args) 'downfrom)
|
|
(memq (caddr args) '(downto above))))
|
|
(excl (or (memq (car args) '(above below))
|
|
(memq (caddr args) '(above below))))
|
|
(start (and (memq (car args) '(from upfrom downfrom))
|
|
(cl-pop2 args)))
|
|
(end (and (memq (car args)
|
|
'(to upto downto above below))
|
|
(cl-pop2 args)))
|
|
(step (and (eq (car args) 'by) (cl-pop2 args)))
|
|
(end-var (and (not (cl-const-expr-p end)) (gensym)))
|
|
(step-var (and (not (cl-const-expr-p step))
|
|
(gensym))))
|
|
(and step (numberp step) (<= step 0)
|
|
(error "Loop `by' value is not positive: %s" step))
|
|
(push (list var (or start 0)) loop-for-bindings)
|
|
(if end-var (push (list end-var end) loop-for-bindings))
|
|
(if step-var (push (list step-var step)
|
|
loop-for-bindings))
|
|
(if end
|
|
(push (list
|
|
(if down (if excl '> '>=) (if excl '< '<=))
|
|
var (or end-var end)) loop-body))
|
|
(push (list var (list (if down '- '+) var
|
|
(or step-var step 1)))
|
|
loop-for-steps)))
|
|
|
|
((memq word '(in in-ref on))
|
|
(let* ((on (eq word 'on))
|
|
(temp (if (and on (symbolp var)) var (gensym))))
|
|
(push (list temp (pop args)) loop-for-bindings)
|
|
(push (list 'consp temp) loop-body)
|
|
(if (eq word 'in-ref)
|
|
(push (list var (list 'car temp)) loop-symbol-macs)
|
|
(or (eq temp var)
|
|
(progn
|
|
(push (list var nil) loop-for-bindings)
|
|
(push (list var (if on temp (list 'car temp)))
|
|
loop-for-sets))))
|
|
(push (list temp
|
|
(if (eq (car args) 'by)
|
|
(let ((step (cl-pop2 args)))
|
|
(if (and (memq (car-safe step)
|
|
'(quote function
|
|
function*))
|
|
(symbolp (nth 1 step)))
|
|
(list (nth 1 step) temp)
|
|
(list 'funcall step temp)))
|
|
(list 'cdr temp)))
|
|
loop-for-steps)))
|
|
|
|
((eq word '=)
|
|
(let* ((start (pop args))
|
|
(then (if (eq (car args) 'then) (cl-pop2 args) start)))
|
|
(push (list var nil) loop-for-bindings)
|
|
(if (or ands (eq (car args) 'and))
|
|
(progn
|
|
(push (list var
|
|
(list 'if
|
|
(or loop-first-flag
|
|
(setq loop-first-flag
|
|
(gensym)))
|
|
start var))
|
|
loop-for-sets)
|
|
(push (list var then) loop-for-steps))
|
|
(push (list var
|
|
(if (eq start then) start
|
|
(list 'if
|
|
(or loop-first-flag
|
|
(setq loop-first-flag (gensym)))
|
|
start then)))
|
|
loop-for-sets))))
|
|
|
|
((memq word '(across across-ref))
|
|
(let ((temp-vec (gensym)) (temp-idx (gensym)))
|
|
(push (list temp-vec (pop args)) loop-for-bindings)
|
|
(push (list temp-idx -1) loop-for-bindings)
|
|
(push (list '< (list 'setq temp-idx (list '1+ temp-idx))
|
|
(list 'length temp-vec)) loop-body)
|
|
(if (eq word 'across-ref)
|
|
(push (list var (list 'aref temp-vec temp-idx))
|
|
loop-symbol-macs)
|
|
(push (list var nil) loop-for-bindings)
|
|
(push (list var (list 'aref temp-vec temp-idx))
|
|
loop-for-sets))))
|
|
|
|
((memq word '(element elements))
|
|
(let ((ref (or (memq (car args) '(in-ref of-ref))
|
|
(and (not (memq (car args) '(in of)))
|
|
(error "Expected `of'"))))
|
|
(seq (cl-pop2 args))
|
|
(temp-seq (gensym))
|
|
(temp-idx (if (eq (car args) 'using)
|
|
(if (and (= (length (cadr args)) 2)
|
|
(eq (caadr args) 'index))
|
|
(cadr (cl-pop2 args))
|
|
(error "Bad `using' clause"))
|
|
(gensym))))
|
|
(push (list temp-seq seq) loop-for-bindings)
|
|
(push (list temp-idx 0) loop-for-bindings)
|
|
(if ref
|
|
(let ((temp-len (gensym)))
|
|
(push (list temp-len (list 'length temp-seq))
|
|
loop-for-bindings)
|
|
(push (list var (list 'elt temp-seq temp-idx))
|
|
loop-symbol-macs)
|
|
(push (list '< temp-idx temp-len) loop-body))
|
|
(push (list var nil) loop-for-bindings)
|
|
(push (list 'and temp-seq
|
|
(list 'or (list 'consp temp-seq)
|
|
(list '< temp-idx
|
|
(list 'length temp-seq))))
|
|
loop-body)
|
|
(push (list var (list 'if (list 'consp temp-seq)
|
|
(list 'pop temp-seq)
|
|
(list 'aref temp-seq temp-idx)))
|
|
loop-for-sets))
|
|
(push (list temp-idx (list '1+ temp-idx))
|
|
loop-for-steps)))
|
|
|
|
((memq word hash-types)
|
|
(or (memq (car args) '(in of)) (error "Expected `of'"))
|
|
(let* ((table (cl-pop2 args))
|
|
(other (if (eq (car args) 'using)
|
|
(if (and (= (length (cadr args)) 2)
|
|
(memq (caadr args) hash-types)
|
|
(not (eq (caadr args) word)))
|
|
(cadr (cl-pop2 args))
|
|
(error "Bad `using' clause"))
|
|
(gensym))))
|
|
(if (memq word '(hash-value hash-values))
|
|
(setq var (prog1 other (setq other var))))
|
|
(setq loop-map-form
|
|
(list 'maphash (list 'function
|
|
(list* 'lambda (list var other)
|
|
'--cl-map)) table))))
|
|
|
|
((memq word '(symbol present-symbol external-symbol
|
|
symbols present-symbols external-symbols))
|
|
(let ((ob (and (memq (car args) '(in of)) (cl-pop2 args))))
|
|
(setq loop-map-form
|
|
(list 'mapatoms (list 'function
|
|
(list* 'lambda (list var)
|
|
'--cl-map)) ob))))
|
|
|
|
((memq word '(overlay overlays extent extents))
|
|
(let ((buf nil) (from nil) (to nil))
|
|
(while (memq (car args) '(in of from to))
|
|
(cond ((eq (car args) 'from) (setq from (cl-pop2 args)))
|
|
((eq (car args) 'to) (setq to (cl-pop2 args)))
|
|
(t (setq buf (cl-pop2 args)))))
|
|
(setq loop-map-form
|
|
(list 'cl-map-extents
|
|
(list 'function (list 'lambda (list var (gensym))
|
|
'(progn . --cl-map) nil))
|
|
buf from to))))
|
|
|
|
((memq word '(interval intervals))
|
|
(let ((buf nil) (prop nil) (from nil) (to nil)
|
|
(var1 (gensym)) (var2 (gensym)))
|
|
(while (memq (car args) '(in of property from to))
|
|
(cond ((eq (car args) 'from) (setq from (cl-pop2 args)))
|
|
((eq (car args) 'to) (setq to (cl-pop2 args)))
|
|
((eq (car args) 'property)
|
|
(setq prop (cl-pop2 args)))
|
|
(t (setq buf (cl-pop2 args)))))
|
|
(if (and (consp var) (symbolp (car var)) (symbolp (cdr var)))
|
|
(setq var1 (car var) var2 (cdr var))
|
|
(push (list var (list 'cons var1 var2)) loop-for-sets))
|
|
(setq loop-map-form
|
|
(list 'cl-map-intervals
|
|
(list 'function (list 'lambda (list var1 var2)
|
|
'(progn . --cl-map)))
|
|
buf prop from to))))
|
|
|
|
((memq word key-types)
|
|
(or (memq (car args) '(in of)) (error "Expected `of'"))
|
|
(let ((map (cl-pop2 args))
|
|
(other (if (eq (car args) 'using)
|
|
(if (and (= (length (cadr args)) 2)
|
|
(memq (caadr args) key-types)
|
|
(not (eq (caadr args) word)))
|
|
(cadr (cl-pop2 args))
|
|
(error "Bad `using' clause"))
|
|
(gensym))))
|
|
(if (memq word '(key-binding key-bindings))
|
|
(setq var (prog1 other (setq other var))))
|
|
(setq loop-map-form
|
|
(list (if (memq word '(key-seq key-seqs))
|
|
'cl-map-keymap-recursively 'cl-map-keymap)
|
|
(list 'function (list* 'lambda (list var other)
|
|
'--cl-map)) map))))
|
|
|
|
((memq word '(frame frames screen screens))
|
|
(let ((temp (gensym)))
|
|
(push (list var '(selected-frame))
|
|
loop-for-bindings)
|
|
(push (list temp nil) loop-for-bindings)
|
|
(push (list 'prog1 (list 'not (list 'eq var temp))
|
|
(list 'or temp (list 'setq temp var)))
|
|
loop-body)
|
|
(push (list var (list 'next-frame var))
|
|
loop-for-steps)))
|
|
|
|
((memq word '(window windows))
|
|
(let ((scr (and (memq (car args) '(in of)) (cl-pop2 args)))
|
|
(temp (gensym)))
|
|
(push (list var (if scr
|
|
(list 'frame-selected-window scr)
|
|
'(selected-window)))
|
|
loop-for-bindings)
|
|
(push (list temp nil) loop-for-bindings)
|
|
(push (list 'prog1 (list 'not (list 'eq var temp))
|
|
(list 'or temp (list 'setq temp var)))
|
|
loop-body)
|
|
(push (list var (list 'next-window var)) loop-for-steps)))
|
|
|
|
(t
|
|
(let ((handler (and (symbolp word)
|
|
(get word 'cl-loop-for-handler))))
|
|
(if handler
|
|
(funcall handler var)
|
|
(error "Expected a `for' preposition, found %s" word)))))
|
|
(eq (car args) 'and))
|
|
(setq ands t)
|
|
(pop args))
|
|
(if (and ands loop-for-bindings)
|
|
(push (nreverse loop-for-bindings) loop-bindings)
|
|
(setq loop-bindings (nconc (mapcar 'list loop-for-bindings)
|
|
loop-bindings)))
|
|
(if loop-for-sets
|
|
(push (list 'progn
|
|
(cl-loop-let (nreverse loop-for-sets) 'setq ands)
|
|
t) loop-body))
|
|
(if loop-for-steps
|
|
(push (cons (if ands 'psetq 'setq)
|
|
(apply 'append (nreverse loop-for-steps)))
|
|
loop-steps))))
|
|
|
|
((eq word 'repeat)
|
|
(let ((temp (gensym)))
|
|
(push (list (list temp (pop args))) loop-bindings)
|
|
(push (list '>= (list 'setq temp (list '1- temp)) 0) loop-body)))
|
|
|
|
((memq word '(collect collecting))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum nil 'nreverse)))
|
|
(if (eq var loop-accum-var)
|
|
(push (list 'progn (list 'push what var) t) loop-body)
|
|
(push (list 'progn
|
|
(list 'setq var (list 'nconc var (list 'list what)))
|
|
t) loop-body))))
|
|
|
|
((memq word '(nconc nconcing append appending))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum nil 'nreverse)))
|
|
(push (list 'progn
|
|
(list 'setq var
|
|
(if (eq var loop-accum-var)
|
|
(list 'nconc
|
|
(list (if (memq word '(nconc nconcing))
|
|
'nreverse 'reverse)
|
|
what)
|
|
var)
|
|
(list (if (memq word '(nconc nconcing))
|
|
'nconc 'append)
|
|
var what))) t) loop-body)))
|
|
|
|
((memq word '(concat concating))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum "")))
|
|
(push (list 'progn (list 'callf 'concat var what) t) loop-body)))
|
|
|
|
((memq word '(vconcat vconcating))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum [])))
|
|
(push (list 'progn (list 'callf 'vconcat var what) t) loop-body)))
|
|
|
|
((memq word '(sum summing))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum 0)))
|
|
(push (list 'progn (list 'incf var what) t) loop-body)))
|
|
|
|
((memq word '(count counting))
|
|
(let ((what (pop args))
|
|
(var (cl-loop-handle-accum 0)))
|
|
(push (list 'progn (list 'if what (list 'incf var)) t) loop-body)))
|
|
|
|
((memq word '(minimize minimizing maximize maximizing))
|
|
(let* ((what (pop args))
|
|
(temp (if (cl-simple-expr-p what) what (gensym)))
|
|
(var (cl-loop-handle-accum nil))
|
|
(func (intern (substring (symbol-name word) 0 3)))
|
|
(set (list 'setq var (list 'if var (list func var temp) temp))))
|
|
(push (list 'progn (if (eq temp what) set
|
|
(list 'let (list (list temp what)) set))
|
|
t) loop-body)))
|
|
|
|
((eq word 'with)
|
|
(let ((bindings nil))
|
|
(while (progn (push (list (pop args)
|
|
(and (eq (car args) '=) (cl-pop2 args)))
|
|
bindings)
|
|
(eq (car args) 'and))
|
|
(pop args))
|
|
(push (nreverse bindings) loop-bindings)))
|
|
|
|
((eq word 'while)
|
|
(push (pop args) loop-body))
|
|
|
|
((eq word 'until)
|
|
(push (list 'not (pop args)) loop-body))
|
|
|
|
((eq word 'always)
|
|
(or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
(push (list 'setq loop-finish-flag (pop args)) loop-body)
|
|
(setq loop-result t))
|
|
|
|
((eq word 'never)
|
|
(or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
(push (list 'setq loop-finish-flag (list 'not (pop args)))
|
|
loop-body)
|
|
(setq loop-result t))
|
|
|
|
((eq word 'thereis)
|
|
(or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
(or loop-result-var (setq loop-result-var (gensym)))
|
|
(push (list 'setq loop-finish-flag
|
|
(list 'not (list 'setq loop-result-var (pop args))))
|
|
loop-body))
|
|
|
|
((memq word '(if when unless))
|
|
(let* ((cond (pop args))
|
|
(then (let ((loop-body nil))
|
|
(cl-parse-loop-clause)
|
|
(cl-loop-build-ands (nreverse loop-body))))
|
|
(else (let ((loop-body nil))
|
|
(if (eq (car args) 'else)
|
|
(progn (pop args) (cl-parse-loop-clause)))
|
|
(cl-loop-build-ands (nreverse loop-body))))
|
|
(simple (and (eq (car then) t) (eq (car else) t))))
|
|
(if (eq (car args) 'end) (pop args))
|
|
(if (eq word 'unless) (setq then (prog1 else (setq else then))))
|
|
(let ((form (cons (if simple (cons 'progn (nth 1 then)) (nth 2 then))
|
|
(if simple (nth 1 else) (list (nth 2 else))))))
|
|
(if (cl-expr-contains form 'it)
|
|
(let ((temp (gensym)))
|
|
(push (list temp) loop-bindings)
|
|
(setq form (list* 'if (list 'setq temp cond)
|
|
(subst temp 'it form))))
|
|
(setq form (list* 'if cond form)))
|
|
(push (if simple (list 'progn form t) form) loop-body))))
|
|
|
|
((memq word '(do doing))
|
|
(let ((body nil))
|
|
(or (consp (car args)) (error "Syntax error on `do' clause"))
|
|
(while (consp (car args)) (push (pop args) body))
|
|
(push (cons 'progn (nreverse (cons t body))) loop-body)))
|
|
|
|
((eq word 'return)
|
|
(or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
(or loop-result-var (setq loop-result-var (gensym)))
|
|
(push (list 'setq loop-result-var (pop args)
|
|
loop-finish-flag nil) loop-body))
|
|
|
|
(t
|
|
(let ((handler (and (symbolp word) (get word 'cl-loop-handler))))
|
|
(or handler (error "Expected a loop keyword, found %s" word))
|
|
(funcall handler))))
|
|
(if (eq (car args) 'and)
|
|
(progn (pop args) (cl-parse-loop-clause)))))
|
|
|
|
(defun cl-loop-let (specs body par) ; uses loop-*
|
|
(let ((p specs) (temps nil) (new nil))
|
|
(while (and p (or (symbolp (car-safe (car p))) (null (cadar p))))
|
|
(setq p (cdr p)))
|
|
(and par p
|
|
(progn
|
|
(setq par nil p specs)
|
|
(while p
|
|
(or (cl-const-expr-p (cadar p))
|
|
(let ((temp (gensym)))
|
|
(push (list temp (cadar p)) temps)
|
|
(setcar (cdar p) temp)))
|
|
(setq p (cdr p)))))
|
|
(while specs
|
|
(if (and (consp (car specs)) (listp (caar specs)))
|
|
(let* ((spec (caar specs)) (nspecs nil)
|
|
(expr (cadr (pop specs)))
|
|
(temp (cdr (or (assq spec loop-destr-temps)
|
|
(car (push (cons spec (or (last spec 0)
|
|
(gensym)))
|
|
loop-destr-temps))))))
|
|
(push (list temp expr) new)
|
|
(while (consp spec)
|
|
(push (list (pop spec)
|
|
(and expr (list (if spec 'pop 'car) temp)))
|
|
nspecs))
|
|
(setq specs (nconc (nreverse nspecs) specs)))
|
|
(push (pop specs) new)))
|
|
(if (eq body 'setq)
|
|
(let ((set (cons (if par 'psetq 'setq) (apply 'nconc (nreverse new)))))
|
|
(if temps (list 'let* (nreverse temps) set) set))
|
|
(list* (if par 'let 'let*)
|
|
(nconc (nreverse temps) (nreverse new)) body))))
|
|
|
|
(defun cl-loop-handle-accum (def &optional func) ; uses args, loop-*
|
|
(if (eq (car args) 'into)
|
|
(let ((var (cl-pop2 args)))
|
|
(or (memq var loop-accum-vars)
|
|
(progn (push (list (list var def)) loop-bindings)
|
|
(push var loop-accum-vars)))
|
|
var)
|
|
(or loop-accum-var
|
|
(progn
|
|
(push (list (list (setq loop-accum-var (gensym)) def))
|
|
loop-bindings)
|
|
(setq loop-result (if func (list func loop-accum-var)
|
|
loop-accum-var))
|
|
loop-accum-var))))
|
|
|
|
(defun cl-loop-build-ands (clauses)
|
|
(let ((ands nil)
|
|
(body nil))
|
|
(while clauses
|
|
(if (and (eq (car-safe (car clauses)) 'progn)
|
|
(eq (car (last (car clauses))) t))
|
|
(if (cdr clauses)
|
|
(setq clauses (cons (nconc (butlast (car clauses))
|
|
(if (eq (car-safe (cadr clauses))
|
|
'progn)
|
|
(cdadr clauses)
|
|
(list (cadr clauses))))
|
|
(cddr clauses)))
|
|
(setq body (cdr (butlast (pop clauses)))))
|
|
(push (pop clauses) ands)))
|
|
(setq ands (or (nreverse ands) (list t)))
|
|
(list (if (cdr ands) (cons 'and ands) (car ands))
|
|
body
|
|
(let ((full (if body
|
|
(append ands (list (cons 'progn (append body '(t)))))
|
|
ands)))
|
|
(if (cdr full) (cons 'and full) (car full))))))
|
|
|
|
|
|
;;; Other iteration control structures.
|
|
|
|
(defmacro do (steps endtest &rest body)
|
|
"The Common Lisp `do' loop.
|
|
Format is: (do ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
|
|
(cl-expand-do-loop steps endtest body nil))
|
|
|
|
(defmacro do* (steps endtest &rest body)
|
|
"The Common Lisp `do*' loop.
|
|
Format is: (do* ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
|
|
(cl-expand-do-loop steps endtest body t))
|
|
|
|
(defun cl-expand-do-loop (steps endtest body star)
|
|
(list 'block nil
|
|
(list* (if star 'let* 'let)
|
|
(mapcar (function (lambda (c)
|
|
(if (consp c) (list (car c) (nth 1 c)) c)))
|
|
steps)
|
|
(list* 'while (list 'not (car endtest))
|
|
(append body
|
|
(let ((sets (mapcar
|
|
(function
|
|
(lambda (c)
|
|
(and (consp c) (cdr (cdr c))
|
|
(list (car c) (nth 2 c)))))
|
|
steps)))
|
|
(setq sets (delq nil sets))
|
|
(and sets
|
|
(list (cons (if (or star (not (cdr sets)))
|
|
'setq 'psetq)
|
|
(apply 'append sets)))))))
|
|
(or (cdr endtest) '(nil)))))
|
|
|
|
(defmacro dolist (spec &rest body)
|
|
"Loop over a list.
|
|
Evaluate BODY with VAR bound to each `car' from LIST, in turn.
|
|
Then evaluate RESULT to get return value, default nil.
|
|
|
|
\(fn (VAR LIST [RESULT]) BODY...)"
|
|
(let ((temp (gensym "--dolist-temp--")))
|
|
(list 'block nil
|
|
(list* 'let (list (list temp (nth 1 spec)) (car spec))
|
|
(list* 'while temp (list 'setq (car spec) (list 'car temp))
|
|
(append body (list (list 'setq temp
|
|
(list 'cdr temp)))))
|
|
(if (cdr (cdr spec))
|
|
(cons (list 'setq (car spec) nil) (cdr (cdr spec)))
|
|
'(nil))))))
|
|
|
|
(defmacro dotimes (spec &rest body)
|
|
"Loop a certain number of times.
|
|
Evaluate BODY with VAR bound to successive integers from 0, inclusive,
|
|
to COUNT, exclusive. Then evaluate RESULT to get return value, default
|
|
nil.
|
|
|
|
\(fn (VAR COUNT [RESULT]) BODY...)"
|
|
(let ((temp (gensym "--dotimes-temp--")))
|
|
(list 'block nil
|
|
(list* 'let (list (list temp (nth 1 spec)) (list (car spec) 0))
|
|
(list* 'while (list '< (car spec) temp)
|
|
(append body (list (list 'incf (car spec)))))
|
|
(or (cdr (cdr spec)) '(nil))))))
|
|
|
|
(defmacro do-symbols (spec &rest body)
|
|
"Loop over all symbols.
|
|
Evaluate BODY with VAR bound to each interned symbol, or to each symbol
|
|
from OBARRAY.
|
|
|
|
\(fn (VAR [OBARRAY [RESULT]]) BODY...)"
|
|
;; Apparently this doesn't have an implicit block.
|
|
(list 'block nil
|
|
(list 'let (list (car spec))
|
|
(list* 'mapatoms
|
|
(list 'function (list* 'lambda (list (car spec)) body))
|
|
(and (cadr spec) (list (cadr spec))))
|
|
(caddr spec))))
|
|
|
|
(defmacro do-all-symbols (spec &rest body)
|
|
(list* 'do-symbols (list (car spec) nil (cadr spec)) body))
|
|
|
|
|
|
;;; Assignments.
|
|
|
|
(defmacro psetq (&rest args)
|
|
"Set SYMs to the values VALs in parallel.
|
|
This is like `setq', except that all VAL forms are evaluated (in order)
|
|
before assigning any symbols SYM to the corresponding values.
|
|
|
|
\(fn SYM VAL SYM VAL ...)"
|
|
(cons 'psetf args))
|
|
|
|
|
|
;;; Binding control structures.
|
|
|
|
(defmacro progv (symbols values &rest body)
|
|
"Bind SYMBOLS to VALUES dynamically in BODY.
|
|
The forms SYMBOLS and VALUES are evaluated, and must evaluate to lists.
|
|
Each SYMBOL in the first list is bound to the corresponding VALUE in the
|
|
second list (or made unbound if VALUES is shorter than SYMBOLS); then the
|
|
BODY forms are executed and their result is returned. This is much like
|
|
a `let' form, except that the list of symbols can be computed at run-time."
|
|
(list 'let '((cl-progv-save nil))
|
|
(list 'unwind-protect
|
|
(list* 'progn (list 'cl-progv-before symbols values) body)
|
|
'(cl-progv-after))))
|
|
|
|
;;; This should really have some way to shadow 'byte-compile properties, etc.
|
|
(defmacro flet (bindings &rest body)
|
|
"Make temporary function defns.
|
|
This is an analogue of `let' that operates on the function cell of FUNC
|
|
rather than its value cell. The FORMs are evaluated with the specified
|
|
function definitions in place, then the definitions are undone (the FUNCs
|
|
go back to their previous definitions, or lack thereof).
|
|
|
|
\(fn ((FUNC ARGLIST BODY...) ...) FORM...)"
|
|
(list* 'letf*
|
|
(mapcar
|
|
(function
|
|
(lambda (x)
|
|
(if (or (and (fboundp (car x))
|
|
(eq (car-safe (symbol-function (car x))) 'macro))
|
|
(cdr (assq (car x) cl-macro-environment)))
|
|
(error "Use `labels', not `flet', to rebind macro names"))
|
|
(let ((func (list 'function*
|
|
(list 'lambda (cadr x)
|
|
(list* 'block (car x) (cddr x))))))
|
|
(if (and (cl-compiling-file)
|
|
(boundp 'byte-compile-function-environment))
|
|
(push (cons (car x) (eval func))
|
|
byte-compile-function-environment))
|
|
(list (list 'symbol-function (list 'quote (car x))) func))))
|
|
bindings)
|
|
body))
|
|
|
|
(defmacro labels (bindings &rest body)
|
|
"Make temporary func bindings.
|
|
This is like `flet', except the bindings are lexical instead of dynamic.
|
|
Unlike `flet', this macro is fully compliant with the Common Lisp standard.
|
|
|
|
\(fn ((FUNC ARGLIST BODY...) ...) FORM...)"
|
|
(let ((vars nil) (sets nil) (cl-macro-environment cl-macro-environment))
|
|
(while bindings
|
|
(let ((var (gensym)))
|
|
(push var vars)
|
|
(push (list 'function* (cons 'lambda (cdar bindings))) sets)
|
|
(push var sets)
|
|
(push (list (car (pop bindings)) 'lambda '(&rest cl-labels-args)
|
|
(list 'list* '(quote funcall) (list 'quote var)
|
|
'cl-labels-args))
|
|
cl-macro-environment)))
|
|
(cl-macroexpand-all (list* 'lexical-let vars (cons (cons 'setq sets) body))
|
|
cl-macro-environment)))
|
|
|
|
;; The following ought to have a better definition for use with newer
|
|
;; byte compilers.
|
|
(defmacro macrolet (bindings &rest body)
|
|
"Make temporary macro defns.
|
|
This is like `flet', but for macros instead of functions.
|
|
|
|
\(fn ((NAME ARGLIST BODY...) ...) FORM...)"
|
|
(if (cdr bindings)
|
|
(list 'macrolet
|
|
(list (car bindings)) (list* 'macrolet (cdr bindings) body))
|
|
(if (null bindings) (cons 'progn body)
|
|
(let* ((name (caar bindings))
|
|
(res (cl-transform-lambda (cdar bindings) name)))
|
|
(eval (car res))
|
|
(cl-macroexpand-all (cons 'progn body)
|
|
(cons (list* name 'lambda (cdr res))
|
|
cl-macro-environment))))))
|
|
|
|
(defmacro symbol-macrolet (bindings &rest body)
|
|
"Make symbol macro defns.
|
|
Within the body FORMs, references to the variable NAME will be replaced
|
|
by EXPANSION, and (setq NAME ...) will act like (setf EXPANSION ...).
|
|
|
|
\(fn ((NAME EXPANSION) ...) FORM...)"
|
|
(if (cdr bindings)
|
|
(list 'symbol-macrolet
|
|
(list (car bindings)) (list* 'symbol-macrolet (cdr bindings) body))
|
|
(if (null bindings) (cons 'progn body)
|
|
(cl-macroexpand-all (cons 'progn body)
|
|
(cons (list (symbol-name (caar bindings))
|
|
(cadar bindings))
|
|
cl-macro-environment)))))
|
|
|
|
(defvar cl-closure-vars nil)
|
|
(defmacro lexical-let (bindings &rest body)
|
|
"Like `let', but lexically scoped.
|
|
The main visible difference is that lambdas inside BODY will create
|
|
lexical closures as in Common Lisp."
|
|
(let* ((cl-closure-vars cl-closure-vars)
|
|
(vars (mapcar (function
|
|
(lambda (x)
|
|
(or (consp x) (setq x (list x)))
|
|
(push (gensym (format "--%s--" (car x)))
|
|
cl-closure-vars)
|
|
(set (car cl-closure-vars) [bad-lexical-ref])
|
|
(list (car x) (cadr x) (car cl-closure-vars))))
|
|
bindings))
|
|
(ebody
|
|
(cl-macroexpand-all
|
|
(cons 'progn body)
|
|
(nconc (mapcar (function (lambda (x)
|
|
(list (symbol-name (car x))
|
|
(list 'symbol-value (caddr x))
|
|
t))) vars)
|
|
(list '(defun . cl-defun-expander))
|
|
cl-macro-environment))))
|
|
(if (not (get (car (last cl-closure-vars)) 'used))
|
|
(list 'let (mapcar (function (lambda (x)
|
|
(list (caddr x) (cadr x)))) vars)
|
|
(sublis (mapcar (function (lambda (x)
|
|
(cons (caddr x)
|
|
(list 'quote (caddr x)))))
|
|
vars)
|
|
ebody))
|
|
(list 'let (mapcar (function (lambda (x)
|
|
(list (caddr x)
|
|
(list 'make-symbol
|
|
(format "--%s--" (car x))))))
|
|
vars)
|
|
(apply 'append '(setf)
|
|
(mapcar (function
|
|
(lambda (x)
|
|
(list (list 'symbol-value (caddr x)) (cadr x))))
|
|
vars))
|
|
ebody))))
|
|
|
|
(defmacro lexical-let* (bindings &rest body)
|
|
"Like `let*', but lexically scoped.
|
|
The main visible difference is that lambdas inside BODY will create
|
|
lexical closures as in Common Lisp."
|
|
(if (null bindings) (cons 'progn body)
|
|
(setq bindings (reverse bindings))
|
|
(while bindings
|
|
(setq body (list (list* 'lexical-let (list (pop bindings)) body))))
|
|
(car body)))
|
|
|
|
(defun cl-defun-expander (func &rest rest)
|
|
(list 'progn
|
|
(list 'defalias (list 'quote func)
|
|
(list 'function (cons 'lambda rest)))
|
|
(list 'quote func)))
|
|
|
|
|
|
;;; Multiple values.
|
|
|
|
(defmacro multiple-value-bind (vars form &rest body)
|
|
"Collect multiple return values.
|
|
FORM must return a list; the BODY is then executed with the first N elements
|
|
of this list bound (`let'-style) to each of the symbols SYM in turn. This
|
|
is analogous to the Common Lisp `multiple-value-bind' macro, using lists to
|
|
simulate true multiple return values. For compatibility, (values A B C) is
|
|
a synonym for (list A B C).
|
|
|
|
\(fn (SYM SYM...) FORM BODY)"
|
|
(let ((temp (gensym)) (n -1))
|
|
(list* 'let* (cons (list temp form)
|
|
(mapcar (function
|
|
(lambda (v)
|
|
(list v (list 'nth (setq n (1+ n)) temp))))
|
|
vars))
|
|
body)))
|
|
|
|
(defmacro multiple-value-setq (vars form)
|
|
"Collect multiple return values.
|
|
FORM must return a list; the first N elements of this list are stored in
|
|
each of the symbols SYM in turn. This is analogous to the Common Lisp
|
|
`multiple-value-setq' macro, using lists to simulate true multiple return
|
|
values. For compatibility, (values A B C) is a synonym for (list A B C).
|
|
|
|
\(fn (SYM SYM...) FORM)"
|
|
(cond ((null vars) (list 'progn form nil))
|
|
((null (cdr vars)) (list 'setq (car vars) (list 'car form)))
|
|
(t
|
|
(let* ((temp (gensym)) (n 0))
|
|
(list 'let (list (list temp form))
|
|
(list 'prog1 (list 'setq (pop vars) (list 'car temp))
|
|
(cons 'setq (apply 'nconc
|
|
(mapcar (function
|
|
(lambda (v)
|
|
(list v (list
|
|
'nth
|
|
(setq n (1+ n))
|
|
temp))))
|
|
vars)))))))))
|
|
|
|
|
|
;;; Declarations.
|
|
|
|
(defmacro locally (&rest body) (cons 'progn body))
|
|
(defmacro the (type form) form)
|
|
|
|
(defvar cl-proclaim-history t) ; for future compilers
|
|
(defvar cl-declare-stack t) ; for future compilers
|
|
|
|
(defun cl-do-proclaim (spec hist)
|
|
(and hist (listp cl-proclaim-history) (push spec cl-proclaim-history))
|
|
(cond ((eq (car-safe spec) 'special)
|
|
(if (boundp 'byte-compile-bound-variables)
|
|
(setq byte-compile-bound-variables
|
|
(append (cdr spec) byte-compile-bound-variables))))
|
|
|
|
((eq (car-safe spec) 'inline)
|
|
(while (setq spec (cdr spec))
|
|
(or (memq (get (car spec) 'byte-optimizer)
|
|
'(nil byte-compile-inline-expand))
|
|
(error "%s already has a byte-optimizer, can't make it inline"
|
|
(car spec)))
|
|
(put (car spec) 'byte-optimizer 'byte-compile-inline-expand)))
|
|
|
|
((eq (car-safe spec) 'notinline)
|
|
(while (setq spec (cdr spec))
|
|
(if (eq (get (car spec) 'byte-optimizer)
|
|
'byte-compile-inline-expand)
|
|
(put (car spec) 'byte-optimizer nil))))
|
|
|
|
((eq (car-safe spec) 'optimize)
|
|
(let ((speed (assq (nth 1 (assq 'speed (cdr spec)))
|
|
'((0 nil) (1 t) (2 t) (3 t))))
|
|
(safety (assq (nth 1 (assq 'safety (cdr spec)))
|
|
'((0 t) (1 t) (2 t) (3 nil)))))
|
|
(if speed (setq cl-optimize-speed (car speed)
|
|
byte-optimize (nth 1 speed)))
|
|
(if safety (setq cl-optimize-safety (car safety)
|
|
byte-compile-delete-errors (nth 1 safety)))))
|
|
|
|
((and (eq (car-safe spec) 'warn) (boundp 'byte-compile-warnings))
|
|
(if (eq byte-compile-warnings t)
|
|
(setq byte-compile-warnings byte-compile-warning-types))
|
|
(while (setq spec (cdr spec))
|
|
(if (consp (car spec))
|
|
(if (eq (cadar spec) 0)
|
|
(setq byte-compile-warnings
|
|
(delq (caar spec) byte-compile-warnings))
|
|
(setq byte-compile-warnings
|
|
(adjoin (caar spec) byte-compile-warnings)))))))
|
|
nil)
|
|
|
|
;;; Process any proclamations made before cl-macs was loaded.
|
|
(defvar cl-proclaims-deferred)
|
|
(let ((p (reverse cl-proclaims-deferred)))
|
|
(while p (cl-do-proclaim (pop p) t))
|
|
(setq cl-proclaims-deferred nil))
|
|
|
|
(defmacro declare (&rest specs)
|
|
(if (cl-compiling-file)
|
|
(while specs
|
|
(if (listp cl-declare-stack) (push (car specs) cl-declare-stack))
|
|
(cl-do-proclaim (pop specs) nil)))
|
|
nil)
|
|
|
|
|
|
|
|
;;; Generalized variables.
|
|
|
|
(defmacro define-setf-method (func args &rest body)
|
|
"Define a `setf' method.
|
|
This method shows how to handle `setf's to places of the form (NAME ARGS...).
|
|
The argument forms ARGS are bound according to ARGLIST, as if NAME were
|
|
going to be expanded as a macro, then the BODY forms are executed and must
|
|
return a list of five elements: a temporary-variables list, a value-forms
|
|
list, a store-variables list (of length one), a store-form, and an access-
|
|
form. See `defsetf' for a simpler way to define most setf-methods.
|
|
|
|
\(fn NAME ARGLIST BODY...)"
|
|
(append '(eval-when (compile load eval))
|
|
(if (stringp (car body))
|
|
(list (list 'put (list 'quote func) '(quote setf-documentation)
|
|
(pop body))))
|
|
(list (cl-transform-function-property
|
|
func 'setf-method (cons args body)))))
|
|
(defalias 'define-setf-expander 'define-setf-method)
|
|
|
|
(defmacro defsetf (func arg1 &rest args)
|
|
"(defsetf NAME FUNC): define a `setf' method.
|
|
This macro is an easy-to-use substitute for `define-setf-method' that works
|
|
well for simple place forms. In the simple `defsetf' form, `setf's of
|
|
the form (setf (NAME ARGS...) VAL) are transformed to function or macro
|
|
calls of the form (FUNC ARGS... VAL). Example: (defsetf aref aset).
|
|
Alternate form: (defsetf NAME ARGLIST (STORE) BODY...).
|
|
Here, the above `setf' call is expanded by binding the argument forms ARGS
|
|
according to ARGLIST, binding the value form VAL to STORE, then executing
|
|
BODY, which must return a Lisp form that does the necessary `setf' operation.
|
|
Actually, ARGLIST and STORE may be bound to temporary variables which are
|
|
introduced automatically to preserve proper execution order of the arguments.
|
|
Example: (defsetf nth (n x) (v) (list 'setcar (list 'nthcdr n x) v))."
|
|
(if (listp arg1)
|
|
(let* ((largs nil) (largsr nil)
|
|
(temps nil) (tempsr nil)
|
|
(restarg nil) (rest-temps nil)
|
|
(store-var (car (prog1 (car args) (setq args (cdr args)))))
|
|
(store-temp (intern (format "--%s--temp--" store-var)))
|
|
(lets1 nil) (lets2 nil)
|
|
(docstr nil) (p arg1))
|
|
(if (stringp (car args))
|
|
(setq docstr (prog1 (car args) (setq args (cdr args)))))
|
|
(while (and p (not (eq (car p) '&aux)))
|
|
(if (eq (car p) '&rest)
|
|
(setq p (cdr p) restarg (car p))
|
|
(or (memq (car p) '(&optional &key &allow-other-keys))
|
|
(setq largs (cons (if (consp (car p)) (car (car p)) (car p))
|
|
largs)
|
|
temps (cons (intern (format "--%s--temp--" (car largs)))
|
|
temps))))
|
|
(setq p (cdr p)))
|
|
(setq largs (nreverse largs) temps (nreverse temps))
|
|
(if restarg
|
|
(setq largsr (append largs (list restarg))
|
|
rest-temps (intern (format "--%s--temp--" restarg))
|
|
tempsr (append temps (list rest-temps)))
|
|
(setq largsr largs tempsr temps))
|
|
(let ((p1 largs) (p2 temps))
|
|
(while p1
|
|
(setq lets1 (cons (list (car p2)
|
|
(list 'gensym (format "--%s--" (car p1))))
|
|
lets1)
|
|
lets2 (cons (list (car p1) (car p2)) lets2)
|
|
p1 (cdr p1) p2 (cdr p2))))
|
|
(if restarg (setq lets2 (cons (list restarg rest-temps) lets2)))
|
|
(append (list 'define-setf-method func arg1)
|
|
(and docstr (list docstr))
|
|
(list
|
|
(list 'let*
|
|
(nreverse
|
|
(cons (list store-temp
|
|
(list 'gensym (format "--%s--" store-var)))
|
|
(if restarg
|
|
(append
|
|
(list
|
|
(list rest-temps
|
|
(list 'mapcar '(quote gensym)
|
|
restarg)))
|
|
lets1)
|
|
lets1)))
|
|
(list 'list ; 'values
|
|
(cons (if restarg 'list* 'list) tempsr)
|
|
(cons (if restarg 'list* 'list) largsr)
|
|
(list 'list store-temp)
|
|
(cons 'let*
|
|
(cons (nreverse
|
|
(cons (list store-var store-temp)
|
|
lets2))
|
|
args))
|
|
(cons (if restarg 'list* 'list)
|
|
(cons (list 'quote func) tempsr)))))))
|
|
(list 'defsetf func '(&rest args) '(store)
|
|
(let ((call (list 'cons (list 'quote arg1)
|
|
'(append args (list store)))))
|
|
(if (car args)
|
|
(list 'list '(quote progn) call 'store)
|
|
call)))))
|
|
|
|
;;; Some standard place types from Common Lisp.
|
|
(defsetf aref aset)
|
|
(defsetf car setcar)
|
|
(defsetf cdr setcdr)
|
|
(defsetf caar (x) (val) (list 'setcar (list 'car x) val))
|
|
(defsetf cadr (x) (val) (list 'setcar (list 'cdr x) val))
|
|
(defsetf cdar (x) (val) (list 'setcdr (list 'car x) val))
|
|
(defsetf cddr (x) (val) (list 'setcdr (list 'cdr x) val))
|
|
(defsetf elt (seq n) (store)
|
|
(list 'if (list 'listp seq) (list 'setcar (list 'nthcdr n seq) store)
|
|
(list 'aset seq n store)))
|
|
(defsetf get put)
|
|
(defsetf get* (x y &optional d) (store) (list 'put x y store))
|
|
(defsetf gethash (x h &optional d) (store) (list 'puthash x store h))
|
|
(defsetf nth (n x) (store) (list 'setcar (list 'nthcdr n x) store))
|
|
(defsetf subseq (seq start &optional end) (new)
|
|
(list 'progn (list 'replace seq new :start1 start :end1 end) new))
|
|
(defsetf symbol-function fset)
|
|
(defsetf symbol-plist setplist)
|
|
(defsetf symbol-value set)
|
|
|
|
;;; Various car/cdr aliases. Note that `cadr' is handled specially.
|
|
(defsetf first setcar)
|
|
(defsetf second (x) (store) (list 'setcar (list 'cdr x) store))
|
|
(defsetf third (x) (store) (list 'setcar (list 'cddr x) store))
|
|
(defsetf fourth (x) (store) (list 'setcar (list 'cdddr x) store))
|
|
(defsetf fifth (x) (store) (list 'setcar (list 'nthcdr 4 x) store))
|
|
(defsetf sixth (x) (store) (list 'setcar (list 'nthcdr 5 x) store))
|
|
(defsetf seventh (x) (store) (list 'setcar (list 'nthcdr 6 x) store))
|
|
(defsetf eighth (x) (store) (list 'setcar (list 'nthcdr 7 x) store))
|
|
(defsetf ninth (x) (store) (list 'setcar (list 'nthcdr 8 x) store))
|
|
(defsetf tenth (x) (store) (list 'setcar (list 'nthcdr 9 x) store))
|
|
(defsetf rest setcdr)
|
|
|
|
;;; Some more Emacs-related place types.
|
|
(defsetf buffer-file-name set-visited-file-name t)
|
|
(defsetf buffer-modified-p (&optional buf) (flag)
|
|
(list 'with-current-buffer buf
|
|
(list 'set-buffer-modified-p flag)))
|
|
(defsetf buffer-name rename-buffer t)
|
|
(defsetf buffer-string () (store)
|
|
(list 'progn '(erase-buffer) (list 'insert store)))
|
|
(defsetf buffer-substring cl-set-buffer-substring)
|
|
(defsetf current-buffer set-buffer)
|
|
(defsetf current-case-table set-case-table)
|
|
(defsetf current-column move-to-column t)
|
|
(defsetf current-global-map use-global-map t)
|
|
(defsetf current-input-mode () (store)
|
|
(list 'progn (list 'apply 'set-input-mode store) store))
|
|
(defsetf current-local-map use-local-map t)
|
|
(defsetf current-window-configuration set-window-configuration t)
|
|
(defsetf default-file-modes set-default-file-modes t)
|
|
(defsetf default-value set-default)
|
|
(defsetf documentation-property put)
|
|
(defsetf extent-data set-extent-data)
|
|
(defsetf extent-face set-extent-face)
|
|
(defsetf extent-priority set-extent-priority)
|
|
(defsetf extent-end-position (ext) (store)
|
|
(list 'progn (list 'set-extent-endpoints (list 'extent-start-position ext)
|
|
store) store))
|
|
(defsetf extent-start-position (ext) (store)
|
|
(list 'progn (list 'set-extent-endpoints store
|
|
(list 'extent-end-position ext)) store))
|
|
(defsetf face-background (f &optional s) (x) (list 'set-face-background f x s))
|
|
(defsetf face-background-pixmap (f &optional s) (x)
|
|
(list 'set-face-background-pixmap f x s))
|
|
(defsetf face-font (f &optional s) (x) (list 'set-face-font f x s))
|
|
(defsetf face-foreground (f &optional s) (x) (list 'set-face-foreground f x s))
|
|
(defsetf face-underline-p (f &optional s) (x)
|
|
(list 'set-face-underline-p f x s))
|
|
(defsetf file-modes set-file-modes t)
|
|
(defsetf frame-height set-screen-height t)
|
|
(defsetf frame-parameters modify-frame-parameters t)
|
|
(defsetf frame-visible-p cl-set-frame-visible-p)
|
|
(defsetf frame-width set-screen-width t)
|
|
(defsetf frame-parameter set-frame-parameter)
|
|
(defsetf getenv setenv t)
|
|
(defsetf get-register set-register)
|
|
(defsetf global-key-binding global-set-key)
|
|
(defsetf keymap-parent set-keymap-parent)
|
|
(defsetf local-key-binding local-set-key)
|
|
(defsetf mark set-mark t)
|
|
(defsetf mark-marker set-mark t)
|
|
(defsetf marker-position set-marker t)
|
|
(defsetf match-data set-match-data t)
|
|
(defsetf mouse-position (scr) (store)
|
|
(list 'set-mouse-position scr (list 'car store) (list 'cadr store)
|
|
(list 'cddr store)))
|
|
(defsetf overlay-get overlay-put)
|
|
(defsetf overlay-start (ov) (store)
|
|
(list 'progn (list 'move-overlay ov store (list 'overlay-end ov)) store))
|
|
(defsetf overlay-end (ov) (store)
|
|
(list 'progn (list 'move-overlay ov (list 'overlay-start ov) store) store))
|
|
(defsetf point goto-char)
|
|
(defsetf point-marker goto-char t)
|
|
(defsetf point-max () (store)
|
|
(list 'progn (list 'narrow-to-region '(point-min) store) store))
|
|
(defsetf point-min () (store)
|
|
(list 'progn (list 'narrow-to-region store '(point-max)) store))
|
|
(defsetf process-buffer set-process-buffer)
|
|
(defsetf process-filter set-process-filter)
|
|
(defsetf process-sentinel set-process-sentinel)
|
|
(defsetf read-mouse-position (scr) (store)
|
|
(list 'set-mouse-position scr (list 'car store) (list 'cdr store)))
|
|
(defsetf screen-height set-screen-height t)
|
|
(defsetf screen-width set-screen-width t)
|
|
(defsetf selected-window select-window)
|
|
(defsetf selected-screen select-screen)
|
|
(defsetf selected-frame select-frame)
|
|
(defsetf standard-case-table set-standard-case-table)
|
|
(defsetf syntax-table set-syntax-table)
|
|
(defsetf visited-file-modtime set-visited-file-modtime t)
|
|
(defsetf window-buffer set-window-buffer t)
|
|
(defsetf window-display-table set-window-display-table t)
|
|
(defsetf window-dedicated-p set-window-dedicated-p t)
|
|
(defsetf window-height () (store)
|
|
(list 'progn (list 'enlarge-window (list '- store '(window-height))) store))
|
|
(defsetf window-hscroll set-window-hscroll)
|
|
(defsetf window-point set-window-point)
|
|
(defsetf window-start set-window-start)
|
|
(defsetf window-width () (store)
|
|
(list 'progn (list 'enlarge-window (list '- store '(window-width)) t) store))
|
|
(defsetf x-get-cutbuffer x-store-cutbuffer t)
|
|
(defsetf x-get-cut-buffer x-store-cut-buffer t) ; groan.
|
|
(defsetf x-get-secondary-selection x-own-secondary-selection t)
|
|
(defsetf x-get-selection x-own-selection t)
|
|
|
|
;;; More complex setf-methods.
|
|
;;; These should take &environment arguments, but since full arglists aren't
|
|
;;; available while compiling cl-macs, we fake it by referring to the global
|
|
;;; variable cl-macro-environment directly.
|
|
|
|
(define-setf-method apply (func arg1 &rest rest)
|
|
(or (and (memq (car-safe func) '(quote function function*))
|
|
(symbolp (car-safe (cdr-safe func))))
|
|
(error "First arg to apply in setf is not (function SYM): %s" func))
|
|
(let* ((form (cons (nth 1 func) (cons arg1 rest)))
|
|
(method (get-setf-method form cl-macro-environment)))
|
|
(list (car method) (nth 1 method) (nth 2 method)
|
|
(cl-setf-make-apply (nth 3 method) (cadr func) (car method))
|
|
(cl-setf-make-apply (nth 4 method) (cadr func) (car method)))))
|
|
|
|
(defun cl-setf-make-apply (form func temps)
|
|
(if (eq (car form) 'progn)
|
|
(list* 'progn (cl-setf-make-apply (cadr form) func temps) (cddr form))
|
|
(or (equal (last form) (last temps))
|
|
(error "%s is not suitable for use with setf-of-apply" func))
|
|
(list* 'apply (list 'quote (car form)) (cdr form))))
|
|
|
|
(define-setf-method nthcdr (n place)
|
|
(let ((method (get-setf-method place cl-macro-environment))
|
|
(n-temp (gensym "--nthcdr-n--"))
|
|
(store-temp (gensym "--nthcdr-store--")))
|
|
(list (cons n-temp (car method))
|
|
(cons n (nth 1 method))
|
|
(list store-temp)
|
|
(list 'let (list (list (car (nth 2 method))
|
|
(list 'cl-set-nthcdr n-temp (nth 4 method)
|
|
store-temp)))
|
|
(nth 3 method) store-temp)
|
|
(list 'nthcdr n-temp (nth 4 method)))))
|
|
|
|
(define-setf-method getf (place tag &optional def)
|
|
(let ((method (get-setf-method place cl-macro-environment))
|
|
(tag-temp (gensym "--getf-tag--"))
|
|
(def-temp (gensym "--getf-def--"))
|
|
(store-temp (gensym "--getf-store--")))
|
|
(list (append (car method) (list tag-temp def-temp))
|
|
(append (nth 1 method) (list tag def))
|
|
(list store-temp)
|
|
(list 'let (list (list (car (nth 2 method))
|
|
(list 'cl-set-getf (nth 4 method)
|
|
tag-temp store-temp)))
|
|
(nth 3 method) store-temp)
|
|
(list 'getf (nth 4 method) tag-temp def-temp))))
|
|
|
|
(define-setf-method substring (place from &optional to)
|
|
(let ((method (get-setf-method place cl-macro-environment))
|
|
(from-temp (gensym "--substring-from--"))
|
|
(to-temp (gensym "--substring-to--"))
|
|
(store-temp (gensym "--substring-store--")))
|
|
(list (append (car method) (list from-temp to-temp))
|
|
(append (nth 1 method) (list from to))
|
|
(list store-temp)
|
|
(list 'let (list (list (car (nth 2 method))
|
|
(list 'cl-set-substring (nth 4 method)
|
|
from-temp to-temp store-temp)))
|
|
(nth 3 method) store-temp)
|
|
(list 'substring (nth 4 method) from-temp to-temp))))
|
|
|
|
;;; Getting and optimizing setf-methods.
|
|
(defun get-setf-method (place &optional env)
|
|
"Return a list of five values describing the setf-method for PLACE.
|
|
PLACE may be any Lisp form which can appear as the PLACE argument to
|
|
a macro like `setf' or `incf'."
|
|
(if (symbolp place)
|
|
(let ((temp (gensym "--setf--")))
|
|
(list nil nil (list temp) (list 'setq place temp) place))
|
|
(or (and (symbolp (car place))
|
|
(let* ((func (car place))
|
|
(name (symbol-name func))
|
|
(method (get func 'setf-method))
|
|
(case-fold-search nil))
|
|
(or (and method
|
|
(let ((cl-macro-environment env))
|
|
(setq method (apply method (cdr place))))
|
|
(if (and (consp method) (= (length method) 5))
|
|
method
|
|
(error "Setf-method for %s returns malformed method"
|
|
func)))
|
|
(and (save-match-data
|
|
(string-match "\\`c[ad][ad][ad]?[ad]?r\\'" name))
|
|
(get-setf-method (compiler-macroexpand place)))
|
|
(and (eq func 'edebug-after)
|
|
(get-setf-method (nth (1- (length place)) place)
|
|
env)))))
|
|
(if (eq place (setq place (macroexpand place env)))
|
|
(if (and (symbolp (car place)) (fboundp (car place))
|
|
(symbolp (symbol-function (car place))))
|
|
(get-setf-method (cons (symbol-function (car place))
|
|
(cdr place)) env)
|
|
(error "No setf-method known for %s" (car place)))
|
|
(get-setf-method place env)))))
|
|
|
|
(defun cl-setf-do-modify (place opt-expr)
|
|
(let* ((method (get-setf-method place cl-macro-environment))
|
|
(temps (car method)) (values (nth 1 method))
|
|
(lets nil) (subs nil)
|
|
(optimize (and (not (eq opt-expr 'no-opt))
|
|
(or (and (not (eq opt-expr 'unsafe))
|
|
(cl-safe-expr-p opt-expr))
|
|
(cl-setf-simple-store-p (car (nth 2 method))
|
|
(nth 3 method)))))
|
|
(simple (and optimize (consp place) (cl-simple-exprs-p (cdr place)))))
|
|
(while values
|
|
(if (or simple (cl-const-expr-p (car values)))
|
|
(push (cons (pop temps) (pop values)) subs)
|
|
(push (list (pop temps) (pop values)) lets)))
|
|
(list (nreverse lets)
|
|
(cons (car (nth 2 method)) (sublis subs (nth 3 method)))
|
|
(sublis subs (nth 4 method)))))
|
|
|
|
(defun cl-setf-do-store (spec val)
|
|
(let ((sym (car spec))
|
|
(form (cdr spec)))
|
|
(if (or (cl-const-expr-p val)
|
|
(and (cl-simple-expr-p val) (eq (cl-expr-contains form sym) 1))
|
|
(cl-setf-simple-store-p sym form))
|
|
(subst val sym form)
|
|
(list 'let (list (list sym val)) form))))
|
|
|
|
(defun cl-setf-simple-store-p (sym form)
|
|
(and (consp form) (eq (cl-expr-contains form sym) 1)
|
|
(eq (nth (1- (length form)) form) sym)
|
|
(symbolp (car form)) (fboundp (car form))
|
|
(not (eq (car-safe (symbol-function (car form))) 'macro))))
|
|
|
|
;;; The standard modify macros.
|
|
(defmacro setf (&rest args)
|
|
"Set each PLACE to the value of its VAL.
|
|
This is a generalized version of `setq'; the PLACEs may be symbolic
|
|
references such as (car x) or (aref x i), as well as plain symbols.
|
|
For example, (setf (cadar x) y) is equivalent to (setcar (cdar x) y).
|
|
The return value is the last VAL in the list.
|
|
|
|
\(fn PLACE VAL PLACE VAL ...)"
|
|
(if (cdr (cdr args))
|
|
(let ((sets nil))
|
|
(while args (push (list 'setf (pop args) (pop args)) sets))
|
|
(cons 'progn (nreverse sets)))
|
|
(if (symbolp (car args))
|
|
(and args (cons 'setq args))
|
|
(let* ((method (cl-setf-do-modify (car args) (nth 1 args)))
|
|
(store (cl-setf-do-store (nth 1 method) (nth 1 args))))
|
|
(if (car method) (list 'let* (car method) store) store)))))
|
|
|
|
(defmacro psetf (&rest args)
|
|
"Set PLACEs to the values VALs in parallel.
|
|
This is like `setf', except that all VAL forms are evaluated (in order)
|
|
before assigning any PLACEs to the corresponding values.
|
|
|
|
\(fn PLACE VAL PLACE VAL ...)"
|
|
(let ((p args) (simple t) (vars nil))
|
|
(while p
|
|
(if (or (not (symbolp (car p))) (cl-expr-depends-p (nth 1 p) vars))
|
|
(setq simple nil))
|
|
(if (memq (car p) vars)
|
|
(error "Destination duplicated in psetf: %s" (car p)))
|
|
(push (pop p) vars)
|
|
(or p (error "Odd number of arguments to psetf"))
|
|
(pop p))
|
|
(if simple
|
|
(list 'progn (cons 'setf args) nil)
|
|
(setq args (reverse args))
|
|
(let ((expr (list 'setf (cadr args) (car args))))
|
|
(while (setq args (cddr args))
|
|
(setq expr (list 'setf (cadr args) (list 'prog1 (car args) expr))))
|
|
(list 'progn expr nil)))))
|
|
|
|
(defun cl-do-pop (place)
|
|
(if (cl-simple-expr-p place)
|
|
(list 'prog1 (list 'car place) (list 'setf place (list 'cdr place)))
|
|
(let* ((method (cl-setf-do-modify place t))
|
|
(temp (gensym "--pop--")))
|
|
(list 'let*
|
|
(append (car method)
|
|
(list (list temp (nth 2 method))))
|
|
(list 'prog1
|
|
(list 'car temp)
|
|
(cl-setf-do-store (nth 1 method) (list 'cdr temp)))))))
|
|
|
|
(defmacro remf (place tag)
|
|
"Remove TAG from property list PLACE.
|
|
PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
The form returns true if TAG was found and removed, nil otherwise."
|
|
(let* ((method (cl-setf-do-modify place t))
|
|
(tag-temp (and (not (cl-const-expr-p tag)) (gensym "--remf-tag--")))
|
|
(val-temp (and (not (cl-simple-expr-p place))
|
|
(gensym "--remf-place--")))
|
|
(ttag (or tag-temp tag))
|
|
(tval (or val-temp (nth 2 method))))
|
|
(list 'let*
|
|
(append (car method)
|
|
(and val-temp (list (list val-temp (nth 2 method))))
|
|
(and tag-temp (list (list tag-temp tag))))
|
|
(list 'if (list 'eq ttag (list 'car tval))
|
|
(list 'progn
|
|
(cl-setf-do-store (nth 1 method) (list 'cddr tval))
|
|
t)
|
|
(list 'cl-do-remf tval ttag)))))
|
|
|
|
(defmacro shiftf (place &rest args)
|
|
"Shift left among PLACEs.
|
|
Example: (shiftf A B C) sets A to B, B to C, and returns the old A.
|
|
Each PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
|
|
\(fn PLACE PLACE... VAL)"
|
|
(cond
|
|
((null args) place)
|
|
((symbolp place) `(prog1 ,place (setq ,place (shiftf ,@args))))
|
|
(t
|
|
(let ((method (cl-setf-do-modify place 'unsafe)))
|
|
`(let* ,(car method)
|
|
(prog1 ,(nth 2 method)
|
|
,(cl-setf-do-store (nth 1 method) `(shiftf ,@args))))))))
|
|
|
|
(defmacro rotatef (&rest args)
|
|
"Rotate left among PLACEs.
|
|
Example: (rotatef A B C) sets A to B, B to C, and C to A. It returns nil.
|
|
Each PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
|
|
\(fn PLACE...)"
|
|
(if (not (memq nil (mapcar 'symbolp args)))
|
|
(and (cdr args)
|
|
(let ((sets nil)
|
|
(first (car args)))
|
|
(while (cdr args)
|
|
(setq sets (nconc sets (list (pop args) (car args)))))
|
|
(nconc (list 'psetf) sets (list (car args) first))))
|
|
(let* ((places (reverse args))
|
|
(temp (gensym "--rotatef--"))
|
|
(form temp))
|
|
(while (cdr places)
|
|
(let ((method (cl-setf-do-modify (pop places) 'unsafe)))
|
|
(setq form (list 'let* (car method)
|
|
(list 'prog1 (nth 2 method)
|
|
(cl-setf-do-store (nth 1 method) form))))))
|
|
(let ((method (cl-setf-do-modify (car places) 'unsafe)))
|
|
(list 'let* (append (car method) (list (list temp (nth 2 method))))
|
|
(cl-setf-do-store (nth 1 method) form) nil)))))
|
|
|
|
(defmacro letf (bindings &rest body)
|
|
"Temporarily bind to PLACEs.
|
|
This is the analogue of `let', but with generalized variables (in the
|
|
sense of `setf') for the PLACEs. Each PLACE is set to the corresponding
|
|
VALUE, then the BODY forms are executed. On exit, either normally or
|
|
because of a `throw' or error, the PLACEs are set back to their original
|
|
values. Note that this macro is *not* available in Common Lisp.
|
|
As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)',
|
|
the PLACE is not modified before executing BODY.
|
|
|
|
\(fn ((PLACE VALUE) ...) BODY...)"
|
|
(if (and (not (cdr bindings)) (cdar bindings) (symbolp (caar bindings)))
|
|
(list* 'let bindings body)
|
|
(let ((lets nil) (sets nil)
|
|
(unsets nil) (rev (reverse bindings)))
|
|
(while rev
|
|
(let* ((place (if (symbolp (caar rev))
|
|
(list 'symbol-value (list 'quote (caar rev)))
|
|
(caar rev)))
|
|
(value (cadar rev))
|
|
(method (cl-setf-do-modify place 'no-opt))
|
|
(save (gensym "--letf-save--"))
|
|
(bound (and (memq (car place) '(symbol-value symbol-function))
|
|
(gensym "--letf-bound--")))
|
|
(temp (and (not (cl-const-expr-p value)) (cdr bindings)
|
|
(gensym "--letf-val--"))))
|
|
(setq lets (nconc (car method)
|
|
(if bound
|
|
(list (list bound
|
|
(list (if (eq (car place)
|
|
'symbol-value)
|
|
'boundp 'fboundp)
|
|
(nth 1 (nth 2 method))))
|
|
(list save (list 'and bound
|
|
(nth 2 method))))
|
|
(list (list save (nth 2 method))))
|
|
(and temp (list (list temp value)))
|
|
lets)
|
|
body (list
|
|
(list 'unwind-protect
|
|
(cons 'progn
|
|
(if (cdr (car rev))
|
|
(cons (cl-setf-do-store (nth 1 method)
|
|
(or temp value))
|
|
body)
|
|
body))
|
|
(if bound
|
|
(list 'if bound
|
|
(cl-setf-do-store (nth 1 method) save)
|
|
(list (if (eq (car place) 'symbol-value)
|
|
'makunbound 'fmakunbound)
|
|
(nth 1 (nth 2 method))))
|
|
(cl-setf-do-store (nth 1 method) save))))
|
|
rev (cdr rev))))
|
|
(list* 'let* lets body))))
|
|
|
|
(defmacro letf* (bindings &rest body)
|
|
"Temporarily bind to PLACEs.
|
|
This is the analogue of `let*', but with generalized variables (in the
|
|
sense of `setf') for the PLACEs. Each PLACE is set to the corresponding
|
|
VALUE, then the BODY forms are executed. On exit, either normally or
|
|
because of a `throw' or error, the PLACEs are set back to their original
|
|
values. Note that this macro is *not* available in Common Lisp.
|
|
As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)',
|
|
the PLACE is not modified before executing BODY.
|
|
|
|
\(fn ((PLACE VALUE) ...) BODY...)"
|
|
(if (null bindings)
|
|
(cons 'progn body)
|
|
(setq bindings (reverse bindings))
|
|
(while bindings
|
|
(setq body (list (list* 'letf (list (pop bindings)) body))))
|
|
(car body)))
|
|
|
|
(defmacro callf (func place &rest args)
|
|
"Set PLACE to (FUNC PLACE ARGS...).
|
|
FUNC should be an unquoted function name. PLACE may be a symbol,
|
|
or any generalized variable allowed by `setf'.
|
|
|
|
\(fn FUNC PLACE ARGS...)"
|
|
(let* ((method (cl-setf-do-modify place (cons 'list args)))
|
|
(rargs (cons (nth 2 method) args)))
|
|
(list 'let* (car method)
|
|
(cl-setf-do-store (nth 1 method)
|
|
(if (symbolp func) (cons func rargs)
|
|
(list* 'funcall (list 'function func)
|
|
rargs))))))
|
|
|
|
(defmacro callf2 (func arg1 place &rest args)
|
|
"Set PLACE to (FUNC ARG1 PLACE ARGS...).
|
|
Like `callf', but PLACE is the second argument of FUNC, not the first.
|
|
|
|
\(fn FUNC ARG1 PLACE ARGS...)"
|
|
(if (and (cl-safe-expr-p arg1) (cl-simple-expr-p place) (symbolp func))
|
|
(list 'setf place (list* func arg1 place args))
|
|
(let* ((method (cl-setf-do-modify place (cons 'list args)))
|
|
(temp (and (not (cl-const-expr-p arg1)) (gensym "--arg1--")))
|
|
(rargs (list* (or temp arg1) (nth 2 method) args)))
|
|
(list 'let* (append (and temp (list (list temp arg1))) (car method))
|
|
(cl-setf-do-store (nth 1 method)
|
|
(if (symbolp func) (cons func rargs)
|
|
(list* 'funcall (list 'function func)
|
|
rargs)))))))
|
|
|
|
(defmacro define-modify-macro (name arglist func &optional doc)
|
|
"Define a `setf'-like modify macro.
|
|
If NAME is called, it combines its PLACE argument with the other arguments
|
|
from ARGLIST using FUNC: (define-modify-macro incf (&optional (n 1)) +)"
|
|
(if (memq '&key arglist) (error "&key not allowed in define-modify-macro"))
|
|
(let ((place (gensym "--place--")))
|
|
(list 'defmacro* name (cons place arglist) doc
|
|
(list* (if (memq '&rest arglist) 'list* 'list)
|
|
'(quote callf) (list 'quote func) place
|
|
(cl-arglist-args arglist)))))
|
|
|
|
|
|
;;; Structures.
|
|
|
|
(defmacro defstruct (struct &rest descs)
|
|
"Define a struct type.
|
|
This macro defines a new Lisp data type called NAME, which contains data
|
|
stored in SLOTs. This defines a `make-NAME' constructor, a `copy-NAME'
|
|
copier, a `NAME-p' predicate, and setf-able `NAME-SLOT' accessors.
|
|
|
|
\(fn (NAME OPTIONS...) (SLOT SLOT-OPTS...)...)"
|
|
(let* ((name (if (consp struct) (car struct) struct))
|
|
(opts (cdr-safe struct))
|
|
(slots nil)
|
|
(defaults nil)
|
|
(conc-name (concat (symbol-name name) "-"))
|
|
(constructor (intern (format "make-%s" name)))
|
|
(constrs nil)
|
|
(copier (intern (format "copy-%s" name)))
|
|
(predicate (intern (format "%s-p" name)))
|
|
(print-func nil) (print-auto nil)
|
|
(safety (if (cl-compiling-file) cl-optimize-safety 3))
|
|
(include nil)
|
|
(tag (intern (format "cl-struct-%s" name)))
|
|
(tag-symbol (intern (format "cl-struct-%s-tags" name)))
|
|
(include-descs nil)
|
|
(side-eff nil)
|
|
(type nil)
|
|
(named nil)
|
|
(forms nil)
|
|
pred-form pred-check)
|
|
(if (stringp (car descs))
|
|
(push (list 'put (list 'quote name) '(quote structure-documentation)
|
|
(pop descs)) forms))
|
|
(setq descs (cons '(cl-tag-slot)
|
|
(mapcar (function (lambda (x) (if (consp x) x (list x))))
|
|
descs)))
|
|
(while opts
|
|
(let ((opt (if (consp (car opts)) (caar opts) (car opts)))
|
|
(args (cdr-safe (pop opts))))
|
|
(cond ((eq opt :conc-name)
|
|
(if args
|
|
(setq conc-name (if (car args)
|
|
(symbol-name (car args)) ""))))
|
|
((eq opt :constructor)
|
|
(if (cdr args)
|
|
(push args constrs)
|
|
(if args (setq constructor (car args)))))
|
|
((eq opt :copier)
|
|
(if args (setq copier (car args))))
|
|
((eq opt :predicate)
|
|
(if args (setq predicate (car args))))
|
|
((eq opt :include)
|
|
(setq include (car args)
|
|
include-descs (mapcar (function
|
|
(lambda (x)
|
|
(if (consp x) x (list x))))
|
|
(cdr args))))
|
|
((eq opt :print-function)
|
|
(setq print-func (car args)))
|
|
((eq opt :type)
|
|
(setq type (car args)))
|
|
((eq opt :named)
|
|
(setq named t))
|
|
((eq opt :initial-offset)
|
|
(setq descs (nconc (make-list (car args) '(cl-skip-slot))
|
|
descs)))
|
|
(t
|
|
(error "Slot option %s unrecognized" opt)))))
|
|
(if print-func
|
|
(setq print-func (list 'progn
|
|
(list 'funcall (list 'function print-func)
|
|
'cl-x 'cl-s 'cl-n) t))
|
|
(or type (and include (not (get include 'cl-struct-print)))
|
|
(setq print-auto t
|
|
print-func (and (or (not (or include type)) (null print-func))
|
|
(list 'progn
|
|
(list 'princ (format "#S(%s" name)
|
|
'cl-s))))))
|
|
(if include
|
|
(let ((inc-type (get include 'cl-struct-type))
|
|
(old-descs (get include 'cl-struct-slots)))
|
|
(or inc-type (error "%s is not a struct name" include))
|
|
(and type (not (eq (car inc-type) type))
|
|
(error ":type disagrees with :include for %s" name))
|
|
(while include-descs
|
|
(setcar (memq (or (assq (caar include-descs) old-descs)
|
|
(error "No slot %s in included struct %s"
|
|
(caar include-descs) include))
|
|
old-descs)
|
|
(pop include-descs)))
|
|
(setq descs (append old-descs (delq (assq 'cl-tag-slot descs) descs))
|
|
type (car inc-type)
|
|
named (assq 'cl-tag-slot descs))
|
|
(if (cadr inc-type) (setq tag name named t))
|
|
(let ((incl include))
|
|
(while incl
|
|
(push (list 'pushnew (list 'quote tag)
|
|
(intern (format "cl-struct-%s-tags" incl)))
|
|
forms)
|
|
(setq incl (get incl 'cl-struct-include)))))
|
|
(if type
|
|
(progn
|
|
(or (memq type '(vector list))
|
|
(error "Illegal :type specifier: %s" type))
|
|
(if named (setq tag name)))
|
|
(setq type 'vector named 'true)))
|
|
(or named (setq descs (delq (assq 'cl-tag-slot descs) descs)))
|
|
(push (list 'defvar tag-symbol) forms)
|
|
(setq pred-form (and named
|
|
(let ((pos (- (length descs)
|
|
(length (memq (assq 'cl-tag-slot descs)
|
|
descs)))))
|
|
(if (eq type 'vector)
|
|
(list 'and '(vectorp cl-x)
|
|
(list '>= '(length cl-x) (length descs))
|
|
(list 'memq (list 'aref 'cl-x pos)
|
|
tag-symbol))
|
|
(if (= pos 0)
|
|
(list 'memq '(car-safe cl-x) tag-symbol)
|
|
(list 'and '(consp cl-x)
|
|
(list 'memq (list 'nth pos 'cl-x)
|
|
tag-symbol))))))
|
|
pred-check (and pred-form (> safety 0)
|
|
(if (and (eq (caadr pred-form) 'vectorp)
|
|
(= safety 1))
|
|
(cons 'and (cdddr pred-form)) pred-form)))
|
|
(let ((pos 0) (descp descs))
|
|
(while descp
|
|
(let* ((desc (pop descp))
|
|
(slot (car desc)))
|
|
(if (memq slot '(cl-tag-slot cl-skip-slot))
|
|
(progn
|
|
(push nil slots)
|
|
(push (and (eq slot 'cl-tag-slot) (list 'quote tag))
|
|
defaults))
|
|
(if (assq slot descp)
|
|
(error "Duplicate slots named %s in %s" slot name))
|
|
(let ((accessor (intern (format "%s%s" conc-name slot))))
|
|
(push slot slots)
|
|
(push (nth 1 desc) defaults)
|
|
(push (list*
|
|
'defsubst* accessor '(cl-x)
|
|
(append
|
|
(and pred-check
|
|
(list (list 'or pred-check
|
|
(list 'error
|
|
(format "%s accessing a non-%s"
|
|
accessor name)
|
|
'cl-x))))
|
|
(list (if (eq type 'vector) (list 'aref 'cl-x pos)
|
|
(if (= pos 0) '(car cl-x)
|
|
(list 'nth pos 'cl-x)))))) forms)
|
|
(push (cons accessor t) side-eff)
|
|
(push (list 'define-setf-method accessor '(cl-x)
|
|
(if (cadr (memq :read-only (cddr desc)))
|
|
(list 'error (format "%s is a read-only slot"
|
|
accessor))
|
|
(list 'cl-struct-setf-expander 'cl-x
|
|
(list 'quote name) (list 'quote accessor)
|
|
(and pred-check (list 'quote pred-check))
|
|
pos)))
|
|
forms)
|
|
(if print-auto
|
|
(nconc print-func
|
|
(list (list 'princ (format " %s" slot) 'cl-s)
|
|
(list 'prin1 (list accessor 'cl-x) 'cl-s)))))))
|
|
(setq pos (1+ pos))))
|
|
(setq slots (nreverse slots)
|
|
defaults (nreverse defaults))
|
|
(and predicate pred-form
|
|
(progn (push (list 'defsubst* predicate '(cl-x)
|
|
(if (eq (car pred-form) 'and)
|
|
(append pred-form '(t))
|
|
(list 'and pred-form t))) forms)
|
|
(push (cons predicate 'error-free) side-eff)))
|
|
(and copier
|
|
(progn (push (list 'defun copier '(x) '(copy-sequence x)) forms)
|
|
(push (cons copier t) side-eff)))
|
|
(if constructor
|
|
(push (list constructor
|
|
(cons '&key (delq nil (copy-sequence slots))))
|
|
constrs))
|
|
(while constrs
|
|
(let* ((name (caar constrs))
|
|
(args (cadr (pop constrs)))
|
|
(anames (cl-arglist-args args))
|
|
(make (mapcar* (function (lambda (s d) (if (memq s anames) s d)))
|
|
slots defaults)))
|
|
(push (list 'defsubst* name
|
|
(list* '&cl-defs (list 'quote (cons nil descs)) args)
|
|
(cons type make)) forms)
|
|
(if (cl-safe-expr-p (cons 'progn (mapcar 'second descs)))
|
|
(push (cons name t) side-eff))))
|
|
(if print-auto (nconc print-func (list '(princ ")" cl-s) t)))
|
|
(if print-func
|
|
(push (list 'push
|
|
(list 'function
|
|
(list 'lambda '(cl-x cl-s cl-n)
|
|
(list 'and pred-form print-func)))
|
|
'custom-print-functions) forms))
|
|
(push (list 'setq tag-symbol (list 'list (list 'quote tag))) forms)
|
|
(push (list* 'eval-when '(compile load eval)
|
|
(list 'put (list 'quote name) '(quote cl-struct-slots)
|
|
(list 'quote descs))
|
|
(list 'put (list 'quote name) '(quote cl-struct-type)
|
|
(list 'quote (list type (eq named t))))
|
|
(list 'put (list 'quote name) '(quote cl-struct-include)
|
|
(list 'quote include))
|
|
(list 'put (list 'quote name) '(quote cl-struct-print)
|
|
print-auto)
|
|
(mapcar (function (lambda (x)
|
|
(list 'put (list 'quote (car x))
|
|
'(quote side-effect-free)
|
|
(list 'quote (cdr x)))))
|
|
side-eff))
|
|
forms)
|
|
(cons 'progn (nreverse (cons (list 'quote name) forms)))))
|
|
|
|
(defun cl-struct-setf-expander (x name accessor pred-form pos)
|
|
(let* ((temp (gensym "--x--")) (store (gensym "--store--")))
|
|
(list (list temp) (list x) (list store)
|
|
(append '(progn)
|
|
(and pred-form
|
|
(list (list 'or (subst temp 'cl-x pred-form)
|
|
(list 'error
|
|
(format
|
|
"%s storing a non-%s" accessor name)
|
|
temp))))
|
|
(list (if (eq (car (get name 'cl-struct-type)) 'vector)
|
|
(list 'aset temp pos store)
|
|
(list 'setcar
|
|
(if (<= pos 5)
|
|
(let ((xx temp))
|
|
(while (>= (setq pos (1- pos)) 0)
|
|
(setq xx (list 'cdr xx)))
|
|
xx)
|
|
(list 'nthcdr pos temp))
|
|
store))))
|
|
(list accessor temp))))
|
|
|
|
|
|
;;; Types and assertions.
|
|
|
|
(defmacro deftype (name arglist &rest body)
|
|
"Define NAME as a new data type.
|
|
The type name can then be used in `typecase', `check-type', etc."
|
|
(list 'eval-when '(compile load eval)
|
|
(cl-transform-function-property
|
|
name 'cl-deftype-handler (cons (list* '&cl-defs ''('*) arglist) body))))
|
|
|
|
(defun cl-make-type-test (val type)
|
|
(if (symbolp type)
|
|
(cond ((get type 'cl-deftype-handler)
|
|
(cl-make-type-test val (funcall (get type 'cl-deftype-handler))))
|
|
((memq type '(nil t)) type)
|
|
((eq type 'null) `(null ,val))
|
|
((eq type 'float) `(floatp-safe ,val))
|
|
((eq type 'real) `(numberp ,val))
|
|
((eq type 'fixnum) `(integerp ,val))
|
|
;; FIXME: Should `character' accept things like ?\C-\M-a ? -stef
|
|
((memq type '(character string-char)) `(char-valid-p ,val))
|
|
(t
|
|
(let* ((name (symbol-name type))
|
|
(namep (intern (concat name "p"))))
|
|
(if (fboundp namep) (list namep val)
|
|
(list (intern (concat name "-p")) val)))))
|
|
(cond ((get (car type) 'cl-deftype-handler)
|
|
(cl-make-type-test val (apply (get (car type) 'cl-deftype-handler)
|
|
(cdr type))))
|
|
((memq (car type) '(integer float real number))
|
|
(delq t (and (cl-make-type-test val (car type))
|
|
(if (memq (cadr type) '(* nil)) t
|
|
(if (consp (cadr type)) (list '> val (caadr type))
|
|
(list '>= val (cadr type))))
|
|
(if (memq (caddr type) '(* nil)) t
|
|
(if (consp (caddr type)) (list '< val (caaddr type))
|
|
(list '<= val (caddr type)))))))
|
|
((memq (car type) '(and or not))
|
|
(cons (car type)
|
|
(mapcar (function (lambda (x) (cl-make-type-test val x)))
|
|
(cdr type))))
|
|
((memq (car type) '(member member*))
|
|
(list 'and (list 'member* val (list 'quote (cdr type))) t))
|
|
((eq (car type) 'satisfies) (list (cadr type) val))
|
|
(t (error "Bad type spec: %s" type)))))
|
|
|
|
(defun typep (val type) ; See compiler macro below.
|
|
"Check that OBJECT is of type TYPE.
|
|
TYPE is a Common Lisp-style type specifier."
|
|
(eval (cl-make-type-test 'val type)))
|
|
|
|
(defmacro check-type (form type &optional string)
|
|
"Verify that FORM is of type TYPE; signal an error if not.
|
|
STRING is an optional description of the desired type."
|
|
(and (or (not (cl-compiling-file))
|
|
(< cl-optimize-speed 3) (= cl-optimize-safety 3))
|
|
(let* ((temp (if (cl-simple-expr-p form 3) form (gensym)))
|
|
(body (list 'or (cl-make-type-test temp type)
|
|
(list 'signal '(quote wrong-type-argument)
|
|
(list 'list (or string (list 'quote type))
|
|
temp (list 'quote form))))))
|
|
(if (eq temp form) (list 'progn body nil)
|
|
(list 'let (list (list temp form)) body nil)))))
|
|
|
|
(defmacro assert (form &optional show-args string &rest args)
|
|
"Verify that FORM returns non-nil; signal an error if not.
|
|
Second arg SHOW-ARGS means to include arguments of FORM in message.
|
|
Other args STRING and ARGS... are arguments to be passed to `error'.
|
|
They are not evaluated unless the assertion fails. If STRING is
|
|
omitted, a default message listing FORM itself is used."
|
|
(and (or (not (cl-compiling-file))
|
|
(< cl-optimize-speed 3) (= cl-optimize-safety 3))
|
|
(let ((sargs (and show-args (delq nil (mapcar
|
|
(function
|
|
(lambda (x)
|
|
(and (not (cl-const-expr-p x))
|
|
x))) (cdr form))))))
|
|
(list 'progn
|
|
(list 'or form
|
|
(if string
|
|
(list* 'error string (append sargs args))
|
|
(list 'signal '(quote cl-assertion-failed)
|
|
(list* 'list (list 'quote form) sargs))))
|
|
nil))))
|
|
|
|
(defmacro ignore-errors (&rest body)
|
|
"Execute FORMS; if an error occurs, return nil.
|
|
Otherwise, return result of last FORM."
|
|
`(condition-case nil (progn ,@body) (error nil)))
|
|
|
|
|
|
;;; Compiler macros.
|
|
|
|
(defmacro define-compiler-macro (func args &rest body)
|
|
"Define a compiler-only macro.
|
|
This is like `defmacro', but macro expansion occurs only if the call to
|
|
FUNC is compiled (i.e., not interpreted). Compiler macros should be used
|
|
for optimizing the way calls to FUNC are compiled; the form returned by
|
|
BODY should do the same thing as a call to the normal function called
|
|
FUNC, though possibly more efficiently. Note that, like regular macros,
|
|
compiler macros are expanded repeatedly until no further expansions are
|
|
possible. Unlike regular macros, BODY can decide to \"punt\" and leave the
|
|
original function call alone by declaring an initial `&whole foo' parameter
|
|
and then returning foo."
|
|
(let ((p args) (res nil))
|
|
(while (consp p) (push (pop p) res))
|
|
(setq args (nconc (nreverse res) (and p (list '&rest p)))))
|
|
(list 'eval-when '(compile load eval)
|
|
(cl-transform-function-property
|
|
func 'cl-compiler-macro
|
|
(cons (if (memq '&whole args) (delq '&whole args)
|
|
(cons '--cl-whole-arg-- args)) body))
|
|
(list 'or (list 'get (list 'quote func) '(quote byte-compile))
|
|
(list 'put (list 'quote func) '(quote byte-compile)
|
|
'(quote cl-byte-compile-compiler-macro)))))
|
|
|
|
(defun compiler-macroexpand (form)
|
|
(while
|
|
(let ((func (car-safe form)) (handler nil))
|
|
(while (and (symbolp func)
|
|
(not (setq handler (get func 'cl-compiler-macro)))
|
|
(fboundp func)
|
|
(or (not (eq (car-safe (symbol-function func)) 'autoload))
|
|
(load (nth 1 (symbol-function func)))))
|
|
(setq func (symbol-function func)))
|
|
(and handler
|
|
(not (eq form (setq form (apply handler form (cdr form))))))))
|
|
form)
|
|
|
|
(defun cl-byte-compile-compiler-macro (form)
|
|
(if (eq form (setq form (compiler-macroexpand form)))
|
|
(byte-compile-normal-call form)
|
|
(byte-compile-form form)))
|
|
|
|
(defmacro defsubst* (name args &rest body)
|
|
"Define NAME as a function.
|
|
Like `defun', except the function is automatically declared `inline',
|
|
ARGLIST allows full Common Lisp conventions, and BODY is implicitly
|
|
surrounded by (block NAME ...).
|
|
|
|
\(fn NAME ARGLIST [DOCSTRING] BODY...)"
|
|
(let* ((argns (cl-arglist-args args)) (p argns)
|
|
(pbody (cons 'progn body))
|
|
(unsafe (not (cl-safe-expr-p pbody))))
|
|
(while (and p (eq (cl-expr-contains args (car p)) 1)) (pop p))
|
|
(list 'progn
|
|
(if p nil ; give up if defaults refer to earlier args
|
|
(list 'define-compiler-macro name
|
|
(list* '&whole 'cl-whole '&cl-quote args)
|
|
(list* 'cl-defsubst-expand (list 'quote argns)
|
|
(list 'quote (list* 'block name body))
|
|
(not (or unsafe (cl-expr-access-order pbody argns)))
|
|
(and (memq '&key args) 'cl-whole) unsafe argns)))
|
|
(list* 'defun* name args body))))
|
|
|
|
(defun cl-defsubst-expand (argns body simple whole unsafe &rest argvs)
|
|
(if (and whole (not (cl-safe-expr-p (cons 'progn argvs)))) whole
|
|
(if (cl-simple-exprs-p argvs) (setq simple t))
|
|
(let ((lets (delq nil
|
|
(mapcar* (function
|
|
(lambda (argn argv)
|
|
(if (or simple (cl-const-expr-p argv))
|
|
(progn (setq body (subst argv argn body))
|
|
(and unsafe (list argn argv)))
|
|
(list argn argv))))
|
|
argns argvs))))
|
|
(if lets (list 'let lets body) body))))
|
|
|
|
|
|
;;; Compile-time optimizations for some functions defined in this package.
|
|
;;; Note that cl.el arranges to force cl-macs to be loaded at compile-time,
|
|
;;; mainly to make sure these macros will be present.
|
|
|
|
(put 'eql 'byte-compile nil)
|
|
(define-compiler-macro eql (&whole form a b)
|
|
(cond ((eq (cl-const-expr-p a) t)
|
|
(let ((val (cl-const-expr-val a)))
|
|
(if (and (numberp val) (not (integerp val)))
|
|
(list 'equal a b)
|
|
(list 'eq a b))))
|
|
((eq (cl-const-expr-p b) t)
|
|
(let ((val (cl-const-expr-val b)))
|
|
(if (and (numberp val) (not (integerp val)))
|
|
(list 'equal a b)
|
|
(list 'eq a b))))
|
|
((cl-simple-expr-p a 5)
|
|
(list 'if (list 'numberp a)
|
|
(list 'equal a b)
|
|
(list 'eq a b)))
|
|
((and (cl-safe-expr-p a)
|
|
(cl-simple-expr-p b 5))
|
|
(list 'if (list 'numberp b)
|
|
(list 'equal a b)
|
|
(list 'eq a b)))
|
|
(t form)))
|
|
|
|
(define-compiler-macro member* (&whole form a list &rest keys)
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(let ((test (and (= (length keys) 2) (eq (car keys) :test)
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(cl-const-expr-val (nth 1 keys)))))
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(cond ((eq test 'eq) (list 'memq a list))
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((eq test 'equal) (list 'member a list))
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((or (null keys) (eq test 'eql))
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(if (eq (cl-const-expr-p a) t)
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(list (if (floatp-safe (cl-const-expr-val a)) 'member 'memq)
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a list)
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(if (eq (cl-const-expr-p list) t)
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(let ((p (cl-const-expr-val list)) (mb nil) (mq nil))
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(if (not (cdr p))
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(and p (list 'eql a (list 'quote (car p))))
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(while p
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(if (floatp-safe (car p)) (setq mb t)
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|
(or (integerp (car p)) (symbolp (car p)) (setq mq t)))
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|
(setq p (cdr p)))
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(if (not mb) (list 'memq a list)
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(if (not mq) (list 'member a list) form))))
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form)))
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(t form))))
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|
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(define-compiler-macro assoc* (&whole form a list &rest keys)
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(let ((test (and (= (length keys) 2) (eq (car keys) :test)
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(cl-const-expr-val (nth 1 keys)))))
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|
(cond ((eq test 'eq) (list 'assq a list))
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|
((eq test 'equal) (list 'assoc a list))
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|
((and (eq (cl-const-expr-p a) t) (or (null keys) (eq test 'eql)))
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|
(if (floatp-safe (cl-const-expr-val a))
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|
(list 'assoc a list) (list 'assq a list)))
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|
(t form))))
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|
|
|
(define-compiler-macro adjoin (&whole form a list &rest keys)
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|
(if (and (cl-simple-expr-p a) (cl-simple-expr-p list)
|
|
(not (memq :key keys)))
|
|
(list 'if (list* 'member* a list keys) list (list 'cons a list))
|
|
form))
|
|
|
|
(define-compiler-macro list* (arg &rest others)
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|
(let* ((args (reverse (cons arg others)))
|
|
(form (car args)))
|
|
(while (setq args (cdr args))
|
|
(setq form (list 'cons (car args) form)))
|
|
form))
|
|
|
|
(define-compiler-macro get* (sym prop &optional def)
|
|
(if def
|
|
(list 'getf (list 'symbol-plist sym) prop def)
|
|
(list 'get sym prop)))
|
|
|
|
(define-compiler-macro typep (&whole form val type)
|
|
(if (cl-const-expr-p type)
|
|
(let ((res (cl-make-type-test val (cl-const-expr-val type))))
|
|
(if (or (memq (cl-expr-contains res val) '(nil 1))
|
|
(cl-simple-expr-p val)) res
|
|
(let ((temp (gensym)))
|
|
(list 'let (list (list temp val)) (subst temp val res)))))
|
|
form))
|
|
|
|
|
|
(mapcar (function
|
|
(lambda (y)
|
|
(put (car y) 'side-effect-free t)
|
|
(put (car y) 'byte-compile 'cl-byte-compile-compiler-macro)
|
|
(put (car y) 'cl-compiler-macro
|
|
(list 'lambda '(w x)
|
|
(if (symbolp (cadr y))
|
|
(list 'list (list 'quote (cadr y))
|
|
(list 'list (list 'quote (caddr y)) 'x))
|
|
(cons 'list (cdr y)))))))
|
|
'((first 'car x) (second 'cadr x) (third 'caddr x) (fourth 'cadddr x)
|
|
(fifth 'nth 4 x) (sixth 'nth 5 x) (seventh 'nth 6 x)
|
|
(eighth 'nth 7 x) (ninth 'nth 8 x) (tenth 'nth 9 x)
|
|
(rest 'cdr x) (endp 'null x) (plusp '> x 0) (minusp '< x 0)
|
|
(caaar car caar) (caadr car cadr) (cadar car cdar)
|
|
(caddr car cddr) (cdaar cdr caar) (cdadr cdr cadr)
|
|
(cddar cdr cdar) (cdddr cdr cddr) (caaaar car caaar)
|
|
(caaadr car caadr) (caadar car cadar) (caaddr car caddr)
|
|
(cadaar car cdaar) (cadadr car cdadr) (caddar car cddar)
|
|
(cadddr car cdddr) (cdaaar cdr caaar) (cdaadr cdr caadr)
|
|
(cdadar cdr cadar) (cdaddr cdr caddr) (cddaar cdr cdaar)
|
|
(cddadr cdr cdadr) (cdddar cdr cddar) (cddddr cdr cdddr) ))
|
|
|
|
;;; Things that are inline.
|
|
(proclaim '(inline floatp-safe acons map concatenate notany notevery
|
|
cl-set-elt revappend nreconc gethash))
|
|
|
|
;;; Things that are side-effect-free.
|
|
(mapcar (function (lambda (x) (put x 'side-effect-free t)))
|
|
'(oddp evenp signum last butlast ldiff pairlis gcd lcm
|
|
isqrt floor* ceiling* truncate* round* mod* rem* subseq
|
|
list-length get* getf))
|
|
|
|
;;; Things that are side-effect-and-error-free.
|
|
(mapcar (function (lambda (x) (put x 'side-effect-free 'error-free)))
|
|
'(eql floatp-safe list* subst acons equalp random-state-p
|
|
copy-tree sublis))
|
|
|
|
|
|
(run-hooks 'cl-macs-load-hook)
|
|
|
|
;;; Local variables:
|
|
;;; byte-compile-warnings: (redefine callargs free-vars unresolved obsolete noruntime)
|
|
;;; End:
|
|
|
|
;;; cl-macs.el ends here
|