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3635 lines
134 KiB
EmacsLisp
3635 lines
134 KiB
EmacsLisp
;;; bytecomp.el --- compilation of Lisp code into byte code.
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;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 1998, 2000
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;; Free Software Foundation, Inc.
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;; Author: Jamie Zawinski <jwz@lucid.com>
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;; Hallvard Furuseth <hbf@ulrik.uio.no>
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;; Maintainer: FSF
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;; Keywords: lisp
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;;; This version incorporates changes up to version 2.10 of the
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;;; Zawinski-Furuseth compiler.
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(defconst byte-compile-version "$Revision: 2.68 $")
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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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;; The Emacs Lisp byte compiler. This crunches lisp source into a sort
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;; of p-code (`lapcode') which takes up less space and can be interpreted
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;; faster. [`LAP' == `Lisp Assembly Program'.]
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;; The user entry points are byte-compile-file and byte-recompile-directory.
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;;; Code:
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;; ========================================================================
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;; Entry points:
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;; byte-recompile-directory, byte-compile-file,
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;; batch-byte-compile, batch-byte-recompile-directory,
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;; byte-compile, compile-defun,
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;; display-call-tree
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;; (byte-compile-buffer and byte-compile-and-load-file were turned off
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;; because they are not terribly useful and get in the way of completion.)
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;; This version of the byte compiler has the following improvements:
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;; + optimization of compiled code:
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;; - removal of unreachable code;
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;; - removal of calls to side-effectless functions whose return-value
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;; is unused;
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;; - compile-time evaluation of safe constant forms, such as (consp nil)
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;; and (ash 1 6);
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;; - open-coding of literal lambdas;
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;; - peephole optimization of emitted code;
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;; - trivial functions are left uncompiled for speed.
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;; + support for inline functions;
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;; + compile-time evaluation of arbitrary expressions;
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;; + compile-time warning messages for:
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;; - functions being redefined with incompatible arglists;
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;; - functions being redefined as macros, or vice-versa;
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;; - functions or macros defined multiple times in the same file;
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;; - functions being called with the incorrect number of arguments;
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;; - functions being called which are not defined globally, in the
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;; file, or as autoloads;
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;; - assignment and reference of undeclared free variables;
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;; - various syntax errors;
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;; + correct compilation of nested defuns, defmacros, defvars and defsubsts;
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;; + correct compilation of top-level uses of macros;
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;; + the ability to generate a histogram of functions called.
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;; User customization variables:
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;;
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;; byte-compile-verbose Whether to report the function currently being
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;; compiled in the minibuffer;
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;; byte-optimize Whether to do optimizations; this may be
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;; t, nil, 'source, or 'byte;
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;; byte-optimize-log Whether to report (in excruciating detail)
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;; exactly which optimizations have been made.
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;; This may be t, nil, 'source, or 'byte;
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;; byte-compile-error-on-warn Whether to stop compilation when a warning is
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;; produced;
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;; byte-compile-delete-errors Whether the optimizer may delete calls or
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;; variable references that are side-effect-free
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;; except that they may return an error.
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;; byte-compile-generate-call-tree Whether to generate a histogram of
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;; function calls. This can be useful for
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;; finding unused functions, as well as simple
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;; performance metering.
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;; byte-compile-warnings List of warnings to issue, or t. May contain
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;; 'free-vars (references to variables not in the
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;; current lexical scope)
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;; 'unresolved (calls to unknown functions)
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;; 'callargs (lambda calls with args that don't
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;; match the lambda's definition)
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;; 'redefine (function cell redefined from
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;; a macro to a lambda or vice versa,
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;; or redefined to take other args)
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;; 'obsolete (obsolete variables and functions)
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;; 'noruntime (calls to functions only defined
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;; within `eval-when-compile')
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;; byte-compile-compatibility Whether the compiler should
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;; generate .elc files which can be loaded into
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;; generic emacs 18.
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;; emacs-lisp-file-regexp Regexp for the extension of source-files;
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;; see also the function byte-compile-dest-file.
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;; New Features:
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;;
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;; o The form `defsubst' is just like `defun', except that the function
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;; generated will be open-coded in compiled code which uses it. This
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;; means that no function call will be generated, it will simply be
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;; spliced in. Lisp functions calls are very slow, so this can be a
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;; big win.
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;;
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;; You can generally accomplish the same thing with `defmacro', but in
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;; that case, the defined procedure can't be used as an argument to
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;; mapcar, etc.
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;;
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;; o You can also open-code one particular call to a function without
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;; open-coding all calls. Use the 'inline' form to do this, like so:
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;;
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;; (inline (foo 1 2 3)) ;; `foo' will be open-coded
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;; or...
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;; (inline ;; `foo' and `baz' will be
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;; (foo 1 2 3 (bar 5)) ;; open-coded, but `bar' will not.
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;; (baz 0))
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;;
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;; o It is possible to open-code a function in the same file it is defined
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;; in without having to load that file before compiling it. the
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;; byte-compiler has been modified to remember function definitions in
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;; the compilation environment in the same way that it remembers macro
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;; definitions.
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;;
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;; o Forms like ((lambda ...) ...) are open-coded.
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;;
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;; o The form `eval-when-compile' is like progn, except that the body
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;; is evaluated at compile-time. When it appears at top-level, this
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;; is analogous to the Common Lisp idiom (eval-when (compile) ...).
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;; When it does not appear at top-level, it is similar to the
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;; Common Lisp #. reader macro (but not in interpreted code).
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;;
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;; o The form `eval-and-compile' is similar to eval-when-compile, but
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;; the whole form is evalled both at compile-time and at run-time.
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;;
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;; o The command compile-defun is analogous to eval-defun.
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;;
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;; o If you run byte-compile-file on a filename which is visited in a
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;; buffer, and that buffer is modified, you are asked whether you want
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;; to save the buffer before compiling.
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;;
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;; o byte-compiled files now start with the string `;ELC'.
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;; Some versions of `file' can be customized to recognize that.
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(require 'backquote)
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(or (fboundp 'defsubst)
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;; This really ought to be loaded already!
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(load-library "byte-run"))
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;;; The feature of compiling in a specific target Emacs version
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;;; has been turned off because compile time options are a bad idea.
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(defmacro byte-compile-single-version () nil)
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(defmacro byte-compile-version-cond (cond) cond)
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;;; The crud you see scattered through this file of the form
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;;; (or (and (boundp 'epoch::version) epoch::version)
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;;; (string-lessp emacs-version "19"))
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;;; is because the Epoch folks couldn't be bothered to follow the
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;;; normal emacs version numbering convention.
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;; (if (byte-compile-version-cond
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;; (or (and (boundp 'epoch::version) epoch::version)
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;; (string-lessp emacs-version "19")))
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;; (progn
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;; ;; emacs-18 compatibility.
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;; (defvar baud-rate (baud-rate)) ;Define baud-rate if it's undefined
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;;
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;; (if (byte-compile-single-version)
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;; (defmacro byte-code-function-p (x) "Emacs 18 doesn't have these." nil)
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;; (defun byte-code-function-p (x) "Emacs 18 doesn't have these." nil))
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;;
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;; (or (and (fboundp 'member)
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;; ;; avoid using someone else's possibly bogus definition of this.
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;; (subrp (symbol-function 'member)))
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;; (defun member (elt list)
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;; "like memq, but uses equal instead of eq. In v19, this is a subr."
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;; (while (and list (not (equal elt (car list))))
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;; (setq list (cdr list)))
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;; list))))
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(defgroup bytecomp nil
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"Emacs Lisp byte-compiler"
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:group 'lisp)
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(defcustom emacs-lisp-file-regexp (if (eq system-type 'vax-vms)
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"\\.EL\\(;[0-9]+\\)?$"
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"\\.el$")
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"*Regexp which matches Emacs Lisp source files.
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You may want to redefine the function `byte-compile-dest-file'
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if you change this variable."
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:group 'bytecomp
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:type 'regexp)
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;; This enables file name handlers such as jka-compr
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;; to remove parts of the file name that should not be copied
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;; through to the output file name.
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(defun byte-compiler-base-file-name (filename)
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(let ((handler (find-file-name-handler filename
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'byte-compiler-base-file-name)))
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(if handler
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(funcall handler 'byte-compiler-base-file-name filename)
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filename)))
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(or (fboundp 'byte-compile-dest-file)
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;; The user may want to redefine this along with emacs-lisp-file-regexp,
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;; so only define it if it is undefined.
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(defun byte-compile-dest-file (filename)
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"Convert an Emacs Lisp source file name to a compiled file name."
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(setq filename (byte-compiler-base-file-name filename))
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(setq filename (file-name-sans-versions filename))
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(cond ((eq system-type 'vax-vms)
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(concat (substring filename 0 (string-match ";" filename)) "c"))
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((string-match emacs-lisp-file-regexp filename)
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(concat (substring filename 0 (match-beginning 0)) ".elc"))
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(t (concat filename ".elc")))))
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;; This can be the 'byte-compile property of any symbol.
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(autoload 'byte-compile-inline-expand "byte-opt")
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;; This is the entrypoint to the lapcode optimizer pass1.
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(autoload 'byte-optimize-form "byte-opt")
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;; This is the entrypoint to the lapcode optimizer pass2.
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(autoload 'byte-optimize-lapcode "byte-opt")
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(autoload 'byte-compile-unfold-lambda "byte-opt")
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;; This is the entry point to the decompiler, which is used by the
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;; disassembler. The disassembler just requires 'byte-compile, but
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;; that doesn't define this function, so this seems to be a reasonable
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;; thing to do.
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(autoload 'byte-decompile-bytecode "byte-opt")
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(defcustom byte-compile-verbose
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(and (not noninteractive) (> baud-rate search-slow-speed))
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"*Non-nil means print messages describing progress of byte-compiler."
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:group 'bytecomp
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:type 'boolean)
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(defcustom byte-compile-compatibility nil
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"*Non-nil means generate output that can run in Emacs 18."
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:group 'bytecomp
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:type 'boolean)
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;; (defvar byte-compile-generate-emacs19-bytecodes
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;; (not (or (and (boundp 'epoch::version) epoch::version)
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;; (string-lessp emacs-version "19")))
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;; "*If this is true, then the byte-compiler will generate bytecode which
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;; makes use of byte-ops which are present only in Emacs 19. Code generated
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;; this way can never be run in Emacs 18, and may even cause it to crash.")
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(defcustom byte-optimize t
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"*Enables optimization in the byte compiler.
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nil means don't do any optimization.
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t means do all optimizations.
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`source' means do source-level optimizations only.
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`byte' means do code-level optimizations only."
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:group 'bytecomp
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:type '(choice (const :tag "none" nil)
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(const :tag "all" t)
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(const :tag "source-level" source)
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(const :tag "byte-level" byte)))
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(defcustom byte-compile-delete-errors t
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"*If non-nil, the optimizer may delete forms that may signal an error.
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This includes variable references and calls to functions such as `car'."
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:group 'bytecomp
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:type 'boolean)
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(defvar byte-compile-dynamic nil
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"If non-nil, compile function bodies so they load lazily.
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They are hidden in comments in the compiled file,
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and each one is brought into core when the
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function is called.
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To enable this option, make it a file-local variable
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in the source file you want it to apply to.
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For example, add -*-byte-compile-dynamic: t;-*- on the first line.
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When this option is true, if you load the compiled file and then move it,
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the functions you loaded will not be able to run.")
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(defcustom byte-compile-dynamic-docstrings t
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"*If non-nil, compile doc strings for lazy access.
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We bury the doc strings of functions and variables
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inside comments in the file, and bring them into core only when they
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are actually needed.
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When this option is true, if you load the compiled file and then move it,
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you won't be able to find the documentation of anything in that file.
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To disable this option for a certain file, make it a file-local variable
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in the source file. For example, add this to the first line:
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-*-byte-compile-dynamic-docstrings:nil;-*-
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You can also set the variable globally.
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This option is enabled by default because it reduces Emacs memory usage."
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:group 'bytecomp
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:type 'boolean)
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(defcustom byte-optimize-log nil
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"*If true, the byte-compiler will log its optimizations into *Compile-Log*.
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If this is 'source, then only source-level optimizations will be logged.
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If it is 'byte, then only byte-level optimizations will be logged."
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:group 'bytecomp
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:type '(choice (const :tag "none" nil)
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(const :tag "all" t)
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(const :tag "source-level" source)
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(const :tag "byte-level" byte)))
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(defcustom byte-compile-error-on-warn nil
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"*If true, the byte-compiler reports warnings with `error'."
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:group 'bytecomp
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:type 'boolean)
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(defconst byte-compile-warning-types
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'(redefine callargs free-vars unresolved obsolete noruntime))
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(defcustom byte-compile-warnings t
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"*List of warnings that the byte-compiler should issue (t for all).
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Elements of the list may be be:
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free-vars references to variables not in the current lexical scope.
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unresolved calls to unknown functions.
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callargs lambda calls with args that don't match the definition.
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redefine function cell redefined from a macro to a lambda or vice
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versa, or redefined to take a different number of arguments.
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obsolete obsolete variables and functions."
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:group 'bytecomp
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:type '(choice (const :tag "All" t)
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(set :menu-tag "Some"
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(const free-vars) (const unresolved)
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(const callargs) (const redefined)
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(const obsolete) (const noruntime))))
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(defcustom byte-compile-generate-call-tree nil
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"*Non-nil means collect call-graph information when compiling.
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This records functions were called and from where.
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If the value is t, compilation displays the call graph when it finishes.
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If the value is neither t nor nil, compilation asks you whether to display
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the graph.
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The call tree only lists functions called, not macros used. Those functions
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which the byte-code interpreter knows about directly (eq, cons, etc.) are
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not reported.
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The call tree also lists those functions which are not known to be called
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\(that is, to which no calls have been compiled). Functions which can be
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invoked interactively are excluded from this list."
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:group 'bytecomp
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:type '(choice (const :tag "Yes" t) (const :tag "No" nil)
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(other :tag "Ask" lambda)))
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(defconst byte-compile-call-tree nil "Alist of functions and their call tree.
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Each element looks like
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\(FUNCTION CALLERS CALLS\)
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where CALLERS is a list of functions that call FUNCTION, and CALLS
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is a list of functions for which calls were generated while compiling
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FUNCTION.")
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(defcustom byte-compile-call-tree-sort 'name
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"*If non-nil, sort the call tree.
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The values `name', `callers', `calls', `calls+callers'
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specify different fields to sort on."
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:group 'bytecomp
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:type '(choice (const name) (const callers) (const calls)
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(const calls+callers) (const nil)))
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;; (defvar byte-compile-overwrite-file t
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;; "If nil, old .elc files are deleted before the new is saved, and .elc
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;; files will have the same modes as the corresponding .el file. Otherwise,
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;; existing .elc files will simply be overwritten, and the existing modes
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;; will not be changed. If this variable is nil, then an .elc file which
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;; is a symbolic link will be turned into a normal file, instead of the file
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;; which the link points to being overwritten.")
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||
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(defvar byte-compile-constants nil
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"List of all constants encountered during compilation of this form.")
|
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(defvar byte-compile-variables nil
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"List of all variables encountered during compilation of this form.")
|
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(defvar byte-compile-bound-variables nil
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"List of variables bound in the context of the current form.
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This list lives partly on the stack.")
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||
(defvar byte-compile-free-references)
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(defvar byte-compile-free-assignments)
|
||
|
||
(defvar byte-compiler-error-flag)
|
||
|
||
(defconst byte-compile-initial-macro-environment
|
||
'(
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;; (byte-compiler-options . (lambda (&rest forms)
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||
;; (apply 'byte-compiler-options-handler forms)))
|
||
(eval-when-compile . (lambda (&rest body)
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||
(list 'quote
|
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(byte-compile-eval (byte-compile-top-level
|
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(cons 'progn body))))))
|
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(eval-and-compile . (lambda (&rest body)
|
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(eval (cons 'progn body))
|
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(cons 'progn body))))
|
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"The default macro-environment passed to macroexpand by the compiler.
|
||
Placing a macro here will cause a macro to have different semantics when
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expanded by the compiler as when expanded by the interpreter.")
|
||
|
||
(defvar byte-compile-macro-environment byte-compile-initial-macro-environment
|
||
"Alist of macros defined in the file being compiled.
|
||
Each element looks like (MACRONAME . DEFINITION). It is
|
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\(MACRONAME . nil) when a macro is redefined as a function.")
|
||
|
||
(defvar byte-compile-function-environment nil
|
||
"Alist of functions defined in the file being compiled.
|
||
This is so we can inline them when necessary.
|
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Each element looks like (FUNCTIONNAME . DEFINITION). It is
|
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\(FUNCTIONNAME . nil) when a function is redefined as a macro.")
|
||
|
||
(defvar byte-compile-unresolved-functions nil
|
||
"Alist of undefined functions to which calls have been compiled.
|
||
Used for warnings when the function is not known to be defined or is later
|
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defined with incorrect args.")
|
||
|
||
(defvar byte-compile-tag-number 0)
|
||
(defvar byte-compile-output nil
|
||
"Alist describing contents to put in byte code string.
|
||
Each element is (INDEX . VALUE)")
|
||
(defvar byte-compile-depth 0 "Current depth of execution stack.")
|
||
(defvar byte-compile-maxdepth 0 "Maximum depth of execution stack.")
|
||
|
||
|
||
;;; The byte codes; this information is duplicated in bytecomp.c
|
||
|
||
(defconst byte-code-vector nil
|
||
"An array containing byte-code names indexed by byte-code values.")
|
||
|
||
(defconst byte-stack+-info nil
|
||
"An array with the stack adjustment for each byte-code.")
|
||
|
||
(defmacro byte-defop (opcode stack-adjust opname &optional docstring)
|
||
;; This is a speed-hack for building the byte-code-vector at compile-time.
|
||
;; We fill in the vector at macroexpand-time, and then after the last call
|
||
;; to byte-defop, we write the vector out as a constant instead of writing
|
||
;; out a bunch of calls to aset.
|
||
;; Actually, we don't fill in the vector itself, because that could make
|
||
;; it problematic to compile big changes to this compiler; we store the
|
||
;; values on its plist, and remove them later in -extrude.
|
||
(let ((v1 (or (get 'byte-code-vector 'tmp-compile-time-value)
|
||
(put 'byte-code-vector 'tmp-compile-time-value
|
||
(make-vector 256 nil))))
|
||
(v2 (or (get 'byte-stack+-info 'tmp-compile-time-value)
|
||
(put 'byte-stack+-info 'tmp-compile-time-value
|
||
(make-vector 256 nil)))))
|
||
(aset v1 opcode opname)
|
||
(aset v2 opcode stack-adjust))
|
||
(if docstring
|
||
(list 'defconst opname opcode (concat "Byte code opcode " docstring "."))
|
||
(list 'defconst opname opcode)))
|
||
|
||
(defmacro byte-extrude-byte-code-vectors ()
|
||
(prog1 (list 'setq 'byte-code-vector
|
||
(get 'byte-code-vector 'tmp-compile-time-value)
|
||
'byte-stack+-info
|
||
(get 'byte-stack+-info 'tmp-compile-time-value))
|
||
(put 'byte-code-vector 'tmp-compile-time-value nil)
|
||
(put 'byte-stack+-info 'tmp-compile-time-value nil)))
|
||
|
||
|
||
;; unused: 0-7
|
||
|
||
;; These opcodes are special in that they pack their argument into the
|
||
;; opcode word.
|
||
;;
|
||
(byte-defop 8 1 byte-varref "for variable reference")
|
||
(byte-defop 16 -1 byte-varset "for setting a variable")
|
||
(byte-defop 24 -1 byte-varbind "for binding a variable")
|
||
(byte-defop 32 0 byte-call "for calling a function")
|
||
(byte-defop 40 0 byte-unbind "for unbinding special bindings")
|
||
;; codes 8-47 are consumed by the preceding opcodes
|
||
|
||
;; unused: 48-55
|
||
|
||
(byte-defop 56 -1 byte-nth)
|
||
(byte-defop 57 0 byte-symbolp)
|
||
(byte-defop 58 0 byte-consp)
|
||
(byte-defop 59 0 byte-stringp)
|
||
(byte-defop 60 0 byte-listp)
|
||
(byte-defop 61 -1 byte-eq)
|
||
(byte-defop 62 -1 byte-memq)
|
||
(byte-defop 63 0 byte-not)
|
||
(byte-defop 64 0 byte-car)
|
||
(byte-defop 65 0 byte-cdr)
|
||
(byte-defop 66 -1 byte-cons)
|
||
(byte-defop 67 0 byte-list1)
|
||
(byte-defop 68 -1 byte-list2)
|
||
(byte-defop 69 -2 byte-list3)
|
||
(byte-defop 70 -3 byte-list4)
|
||
(byte-defop 71 0 byte-length)
|
||
(byte-defop 72 -1 byte-aref)
|
||
(byte-defop 73 -2 byte-aset)
|
||
(byte-defop 74 0 byte-symbol-value)
|
||
(byte-defop 75 0 byte-symbol-function) ; this was commented out
|
||
(byte-defop 76 -1 byte-set)
|
||
(byte-defop 77 -1 byte-fset) ; this was commented out
|
||
(byte-defop 78 -1 byte-get)
|
||
(byte-defop 79 -2 byte-substring)
|
||
(byte-defop 80 -1 byte-concat2)
|
||
(byte-defop 81 -2 byte-concat3)
|
||
(byte-defop 82 -3 byte-concat4)
|
||
(byte-defop 83 0 byte-sub1)
|
||
(byte-defop 84 0 byte-add1)
|
||
(byte-defop 85 -1 byte-eqlsign)
|
||
(byte-defop 86 -1 byte-gtr)
|
||
(byte-defop 87 -1 byte-lss)
|
||
(byte-defop 88 -1 byte-leq)
|
||
(byte-defop 89 -1 byte-geq)
|
||
(byte-defop 90 -1 byte-diff)
|
||
(byte-defop 91 0 byte-negate)
|
||
(byte-defop 92 -1 byte-plus)
|
||
(byte-defop 93 -1 byte-max)
|
||
(byte-defop 94 -1 byte-min)
|
||
(byte-defop 95 -1 byte-mult) ; v19 only
|
||
(byte-defop 96 1 byte-point)
|
||
(byte-defop 98 0 byte-goto-char)
|
||
(byte-defop 99 0 byte-insert)
|
||
(byte-defop 100 1 byte-point-max)
|
||
(byte-defop 101 1 byte-point-min)
|
||
(byte-defop 102 0 byte-char-after)
|
||
(byte-defop 103 1 byte-following-char)
|
||
(byte-defop 104 1 byte-preceding-char)
|
||
(byte-defop 105 1 byte-current-column)
|
||
(byte-defop 106 0 byte-indent-to)
|
||
(byte-defop 107 0 byte-scan-buffer-OBSOLETE) ; no longer generated as of v18
|
||
(byte-defop 108 1 byte-eolp)
|
||
(byte-defop 109 1 byte-eobp)
|
||
(byte-defop 110 1 byte-bolp)
|
||
(byte-defop 111 1 byte-bobp)
|
||
(byte-defop 112 1 byte-current-buffer)
|
||
(byte-defop 113 0 byte-set-buffer)
|
||
(byte-defop 114 0 byte-save-current-buffer
|
||
"To make a binding to record the current buffer")
|
||
(byte-defop 115 0 byte-set-mark-OBSOLETE)
|
||
(byte-defop 116 1 byte-interactive-p)
|
||
|
||
;; These ops are new to v19
|
||
(byte-defop 117 0 byte-forward-char)
|
||
(byte-defop 118 0 byte-forward-word)
|
||
(byte-defop 119 -1 byte-skip-chars-forward)
|
||
(byte-defop 120 -1 byte-skip-chars-backward)
|
||
(byte-defop 121 0 byte-forward-line)
|
||
(byte-defop 122 0 byte-char-syntax)
|
||
(byte-defop 123 -1 byte-buffer-substring)
|
||
(byte-defop 124 -1 byte-delete-region)
|
||
(byte-defop 125 -1 byte-narrow-to-region)
|
||
(byte-defop 126 1 byte-widen)
|
||
(byte-defop 127 0 byte-end-of-line)
|
||
|
||
;; unused: 128
|
||
|
||
;; These store their argument in the next two bytes
|
||
(byte-defop 129 1 byte-constant2
|
||
"for reference to a constant with vector index >= byte-constant-limit")
|
||
(byte-defop 130 0 byte-goto "for unconditional jump")
|
||
(byte-defop 131 -1 byte-goto-if-nil "to pop value and jump if it's nil")
|
||
(byte-defop 132 -1 byte-goto-if-not-nil "to pop value and jump if it's not nil")
|
||
(byte-defop 133 -1 byte-goto-if-nil-else-pop
|
||
"to examine top-of-stack, jump and don't pop it if it's nil,
|
||
otherwise pop it")
|
||
(byte-defop 134 -1 byte-goto-if-not-nil-else-pop
|
||
"to examine top-of-stack, jump and don't pop it if it's non nil,
|
||
otherwise pop it")
|
||
|
||
(byte-defop 135 -1 byte-return "to pop a value and return it from `byte-code'")
|
||
(byte-defop 136 -1 byte-discard "to discard one value from stack")
|
||
(byte-defop 137 1 byte-dup "to duplicate the top of the stack")
|
||
|
||
(byte-defop 138 0 byte-save-excursion
|
||
"to make a binding to record the buffer, point and mark")
|
||
(byte-defop 139 0 byte-save-window-excursion
|
||
"to make a binding to record entire window configuration")
|
||
(byte-defop 140 0 byte-save-restriction
|
||
"to make a binding to record the current buffer clipping restrictions")
|
||
(byte-defop 141 -1 byte-catch
|
||
"for catch. Takes, on stack, the tag and an expression for the body")
|
||
(byte-defop 142 -1 byte-unwind-protect
|
||
"for unwind-protect. Takes, on stack, an expression for the unwind-action")
|
||
|
||
;; For condition-case. Takes, on stack, the variable to bind,
|
||
;; an expression for the body, and a list of clauses.
|
||
(byte-defop 143 -2 byte-condition-case)
|
||
|
||
;; For entry to with-output-to-temp-buffer.
|
||
;; Takes, on stack, the buffer name.
|
||
;; Binds standard-output and does some other things.
|
||
;; Returns with temp buffer on the stack in place of buffer name.
|
||
(byte-defop 144 0 byte-temp-output-buffer-setup)
|
||
|
||
;; For exit from with-output-to-temp-buffer.
|
||
;; Expects the temp buffer on the stack underneath value to return.
|
||
;; Pops them both, then pushes the value back on.
|
||
;; Unbinds standard-output and makes the temp buffer visible.
|
||
(byte-defop 145 -1 byte-temp-output-buffer-show)
|
||
|
||
;; these ops are new to v19
|
||
|
||
;; To unbind back to the beginning of this frame.
|
||
;; Not used yet, but will be needed for tail-recursion elimination.
|
||
(byte-defop 146 0 byte-unbind-all)
|
||
|
||
;; these ops are new to v19
|
||
(byte-defop 147 -2 byte-set-marker)
|
||
(byte-defop 148 0 byte-match-beginning)
|
||
(byte-defop 149 0 byte-match-end)
|
||
(byte-defop 150 0 byte-upcase)
|
||
(byte-defop 151 0 byte-downcase)
|
||
(byte-defop 152 -1 byte-string=)
|
||
(byte-defop 153 -1 byte-string<)
|
||
(byte-defop 154 -1 byte-equal)
|
||
(byte-defop 155 -1 byte-nthcdr)
|
||
(byte-defop 156 -1 byte-elt)
|
||
(byte-defop 157 -1 byte-member)
|
||
(byte-defop 158 -1 byte-assq)
|
||
(byte-defop 159 0 byte-nreverse)
|
||
(byte-defop 160 -1 byte-setcar)
|
||
(byte-defop 161 -1 byte-setcdr)
|
||
(byte-defop 162 0 byte-car-safe)
|
||
(byte-defop 163 0 byte-cdr-safe)
|
||
(byte-defop 164 -1 byte-nconc)
|
||
(byte-defop 165 -1 byte-quo)
|
||
(byte-defop 166 -1 byte-rem)
|
||
(byte-defop 167 0 byte-numberp)
|
||
(byte-defop 168 0 byte-integerp)
|
||
|
||
;; unused: 169-174
|
||
(byte-defop 175 nil byte-listN)
|
||
(byte-defop 176 nil byte-concatN)
|
||
(byte-defop 177 nil byte-insertN)
|
||
|
||
;; unused: 178-191
|
||
|
||
(byte-defop 192 1 byte-constant "for reference to a constant")
|
||
;; codes 193-255 are consumed by byte-constant.
|
||
(defconst byte-constant-limit 64
|
||
"Exclusive maximum index usable in the `byte-constant' opcode.")
|
||
|
||
(defconst byte-goto-ops '(byte-goto byte-goto-if-nil byte-goto-if-not-nil
|
||
byte-goto-if-nil-else-pop
|
||
byte-goto-if-not-nil-else-pop)
|
||
"List of byte-codes whose offset is a pc.")
|
||
|
||
(defconst byte-goto-always-pop-ops '(byte-goto-if-nil byte-goto-if-not-nil))
|
||
|
||
(byte-extrude-byte-code-vectors)
|
||
|
||
;;; lapcode generator
|
||
;;;
|
||
;;; the byte-compiler now does source -> lapcode -> bytecode instead of
|
||
;;; source -> bytecode, because it's a lot easier to make optimizations
|
||
;;; on lapcode than on bytecode.
|
||
;;;
|
||
;;; Elements of the lapcode list are of the form (<instruction> . <parameter>)
|
||
;;; where instruction is a symbol naming a byte-code instruction,
|
||
;;; and parameter is an argument to that instruction, if any.
|
||
;;;
|
||
;;; The instruction can be the pseudo-op TAG, which means that this position
|
||
;;; in the instruction stream is a target of a goto. (car PARAMETER) will be
|
||
;;; the PC for this location, and the whole instruction "(TAG pc)" will be the
|
||
;;; parameter for some goto op.
|
||
;;;
|
||
;;; If the operation is varbind, varref, varset or push-constant, then the
|
||
;;; parameter is (variable/constant . index_in_constant_vector).
|
||
;;;
|
||
;;; First, the source code is macroexpanded and optimized in various ways.
|
||
;;; Then the resultant code is compiled into lapcode. Another set of
|
||
;;; optimizations are then run over the lapcode. Then the variables and
|
||
;;; constants referenced by the lapcode are collected and placed in the
|
||
;;; constants-vector. (This happens now so that variables referenced by dead
|
||
;;; code don't consume space.) And finally, the lapcode is transformed into
|
||
;;; compacted byte-code.
|
||
;;;
|
||
;;; A distinction is made between variables and constants because the variable-
|
||
;;; referencing instructions are more sensitive to the variables being near the
|
||
;;; front of the constants-vector than the constant-referencing instructions.
|
||
;;; Also, this lets us notice references to free variables.
|
||
|
||
(defun byte-compile-lapcode (lap)
|
||
"Turns lapcode into bytecode. The lapcode is destroyed."
|
||
;; Lapcode modifications: changes the ID of a tag to be the tag's PC.
|
||
(let ((pc 0) ; Program counter
|
||
op off ; Operation & offset
|
||
(bytes '()) ; Put the output bytes here
|
||
(patchlist nil) ; List of tags and goto's to patch
|
||
rest rel tmp)
|
||
(while lap
|
||
(setq op (car (car lap))
|
||
off (cdr (car lap)))
|
||
(cond ((not (symbolp op))
|
||
(error "Non-symbolic opcode `%s'" op))
|
||
((eq op 'TAG)
|
||
(setcar off pc)
|
||
(setq patchlist (cons off patchlist)))
|
||
((memq op byte-goto-ops)
|
||
(setq pc (+ pc 3))
|
||
(setq bytes (cons (cons pc (cdr off))
|
||
(cons nil
|
||
(cons (symbol-value op) bytes))))
|
||
(setq patchlist (cons bytes patchlist)))
|
||
(t
|
||
(setq bytes
|
||
(cond ((cond ((consp off)
|
||
;; Variable or constant reference
|
||
(setq off (cdr off))
|
||
(eq op 'byte-constant)))
|
||
(cond ((< off byte-constant-limit)
|
||
(setq pc (1+ pc))
|
||
(cons (+ byte-constant off) bytes))
|
||
(t
|
||
(setq pc (+ 3 pc))
|
||
(cons (lsh off -8)
|
||
(cons (logand off 255)
|
||
(cons byte-constant2 bytes))))))
|
||
((<= byte-listN (symbol-value op))
|
||
(setq pc (+ 2 pc))
|
||
(cons off (cons (symbol-value op) bytes)))
|
||
((< off 6)
|
||
(setq pc (1+ pc))
|
||
(cons (+ (symbol-value op) off) bytes))
|
||
((< off 256)
|
||
(setq pc (+ 2 pc))
|
||
(cons off (cons (+ (symbol-value op) 6) bytes)))
|
||
(t
|
||
(setq pc (+ 3 pc))
|
||
(cons (lsh off -8)
|
||
(cons (logand off 255)
|
||
(cons (+ (symbol-value op) 7)
|
||
bytes))))))))
|
||
(setq lap (cdr lap)))
|
||
;;(if (not (= pc (length bytes)))
|
||
;; (error "Compiler error: pc mismatch - %s %s" pc (length bytes)))
|
||
;; Patch PC into jumps
|
||
(let (bytes)
|
||
(while patchlist
|
||
(setq bytes (car patchlist))
|
||
(cond ((atom (car bytes))) ; Tag
|
||
(t ; Absolute jump
|
||
(setq pc (car (cdr (car bytes)))) ; Pick PC from tag
|
||
(setcar (cdr bytes) (logand pc 255))
|
||
(setcar bytes (lsh pc -8))))
|
||
(setq patchlist (cdr patchlist))))
|
||
(concat (nreverse bytes))))
|
||
|
||
|
||
;;; compile-time evaluation
|
||
|
||
(defun byte-compile-eval (form)
|
||
"Eval FORM and mark the functions defined therein.
|
||
Each function's symbol gets marked with the `byte-compile-noruntime' property."
|
||
(let ((hist-orig load-history)
|
||
(hist-nil-orig current-load-list))
|
||
(prog1 (eval form)
|
||
(when (memq 'noruntime byte-compile-warnings)
|
||
(let ((hist-new load-history)
|
||
(hist-nil-new current-load-list))
|
||
;; Go through load-history, look for newly loaded files
|
||
;; and mark all the functions defined therein.
|
||
(while (and hist-new (not (eq hist-new hist-orig)))
|
||
(let ((xs (pop hist-new)))
|
||
;; Make sure the file was not already loaded before.
|
||
(unless (assoc (car xs) hist-orig)
|
||
(dolist (s xs)
|
||
(cond
|
||
((symbolp s) (put s 'byte-compile-noruntime t))
|
||
((and (consp s) (eq 'autoload (car s)))
|
||
(put (cdr s) 'byte-compile-noruntime t)))))))
|
||
;; Go through current-load-list for the locally defined funs.
|
||
(while (and hist-nil-new (not (eq hist-nil-new hist-nil-orig)))
|
||
(let ((s (pop hist-nil-new)))
|
||
(when (symbolp s)
|
||
(put s 'byte-compile-noruntime t)))))))))
|
||
|
||
|
||
;;; byte compiler messages
|
||
|
||
(defvar byte-compile-current-form nil)
|
||
(defvar byte-compile-current-file nil)
|
||
(defvar byte-compile-dest-file nil)
|
||
|
||
(defmacro byte-compile-log (format-string &rest args)
|
||
(list 'and
|
||
'byte-optimize
|
||
'(memq byte-optimize-log '(t source))
|
||
(list 'let '((print-escape-newlines t)
|
||
(print-level 4)
|
||
(print-length 4))
|
||
(list 'byte-compile-log-1
|
||
(cons 'format
|
||
(cons format-string
|
||
(mapcar
|
||
'(lambda (x)
|
||
(if (symbolp x) (list 'prin1-to-string x) x))
|
||
args)))))))
|
||
|
||
(defconst byte-compile-last-warned-form nil)
|
||
|
||
;; Log a message STRING in *Compile-Log*.
|
||
;; Also log the current function and file if not already done.
|
||
(defun byte-compile-log-1 (string &optional fill)
|
||
(cond (noninteractive
|
||
(if (or byte-compile-current-file
|
||
(and byte-compile-last-warned-form
|
||
(not (eq byte-compile-current-form
|
||
byte-compile-last-warned-form))))
|
||
(message "While compiling %s%s:"
|
||
(or byte-compile-current-form "toplevel forms")
|
||
(if byte-compile-current-file
|
||
(if (stringp byte-compile-current-file)
|
||
(concat " in file " byte-compile-current-file)
|
||
(concat " in buffer "
|
||
(buffer-name byte-compile-current-file)))
|
||
"")))
|
||
(message " %s" string))
|
||
(t
|
||
(save-excursion
|
||
(set-buffer (get-buffer-create "*Compile-Log*"))
|
||
(goto-char (point-max))
|
||
(cond ((or byte-compile-current-file
|
||
(and byte-compile-last-warned-form
|
||
(not (eq byte-compile-current-form
|
||
byte-compile-last-warned-form))))
|
||
(if byte-compile-current-file
|
||
(insert "\n\^L\n" (current-time-string) "\n"))
|
||
(insert "While compiling "
|
||
(if byte-compile-current-form
|
||
(format "%s" byte-compile-current-form)
|
||
"toplevel forms"))
|
||
(if byte-compile-current-file
|
||
(if (stringp byte-compile-current-file)
|
||
(insert " in file " byte-compile-current-file)
|
||
(insert " in buffer "
|
||
(buffer-name byte-compile-current-file))))
|
||
(insert ":\n")))
|
||
(insert " " string "\n")
|
||
(if (and fill (not (string-match "\n" string)))
|
||
(let ((fill-prefix " ")
|
||
(fill-column 78))
|
||
(fill-paragraph nil)))
|
||
)))
|
||
(setq byte-compile-current-file nil
|
||
byte-compile-last-warned-form byte-compile-current-form))
|
||
|
||
;; Log the start of a file in *Compile-Log*, and mark it as done.
|
||
;; But do nothing in batch mode.
|
||
(defun byte-compile-log-file ()
|
||
(and byte-compile-current-file (not noninteractive)
|
||
(save-excursion
|
||
(set-buffer (get-buffer-create "*Compile-Log*"))
|
||
(goto-char (point-max))
|
||
(insert "\n\^L\nCompiling "
|
||
(if (stringp byte-compile-current-file)
|
||
(concat "file " byte-compile-current-file)
|
||
(concat "buffer " (buffer-name byte-compile-current-file)))
|
||
" at " (current-time-string) "\n")
|
||
(setq byte-compile-current-file nil))))
|
||
|
||
(defun byte-compile-warn (format &rest args)
|
||
(setq format (apply 'format format args))
|
||
(if byte-compile-error-on-warn
|
||
(error "%s" format) ; byte-compile-file catches and logs it
|
||
(byte-compile-log-1 (concat "** " format) t)
|
||
;;; It is useless to flash warnings too fast to be read.
|
||
;;; Besides, they will all be shown at the end.
|
||
;;; (or noninteractive ; already written on stdout.
|
||
;;; (message "Warning: %s" format))
|
||
))
|
||
|
||
;;; This function should be used to report errors that have halted
|
||
;;; compilation of the current file.
|
||
(defun byte-compile-report-error (error-info)
|
||
(setq byte-compiler-error-flag t)
|
||
(byte-compile-log-1
|
||
(concat "!! "
|
||
(format (if (cdr error-info) "%s (%s)" "%s")
|
||
(get (car error-info) 'error-message)
|
||
(prin1-to-string (cdr error-info))))))
|
||
|
||
;;; Used by make-obsolete.
|
||
(defun byte-compile-obsolete (form)
|
||
(let ((new (get (car form) 'byte-obsolete-info)))
|
||
(if (memq 'obsolete byte-compile-warnings)
|
||
(byte-compile-warn "%s is an obsolete function; %s" (car form)
|
||
(if (stringp (car new))
|
||
(car new)
|
||
(format "use %s instead." (car new)))))
|
||
(funcall (or (cdr new) 'byte-compile-normal-call) form)))
|
||
|
||
;; Compiler options
|
||
|
||
;; (defvar byte-compiler-valid-options
|
||
;; '((optimize byte-optimize (t nil source byte) val)
|
||
;; (file-format byte-compile-compatibility (emacs18 emacs19)
|
||
;; (eq val 'emacs18))
|
||
;; ;; (new-bytecodes byte-compile-generate-emacs19-bytecodes (t nil) val)
|
||
;; (delete-errors byte-compile-delete-errors (t nil) val)
|
||
;; (verbose byte-compile-verbose (t nil) val)
|
||
;; (warnings byte-compile-warnings ((callargs redefine free-vars unresolved))
|
||
;; val)))
|
||
|
||
;; Inhibit v18/v19 selectors if the version is hardcoded.
|
||
;; #### This should print a warning if the user tries to change something
|
||
;; than can't be changed because the running compiler doesn't support it.
|
||
;; (cond
|
||
;; ((byte-compile-single-version)
|
||
;; (setcar (cdr (cdr (assq 'new-bytecodes byte-compiler-valid-options)))
|
||
;; (list (byte-compile-version-cond
|
||
;; byte-compile-generate-emacs19-bytecodes)))
|
||
;; (setcar (cdr (cdr (assq 'file-format byte-compiler-valid-options)))
|
||
;; (if (byte-compile-version-cond byte-compile-compatibility)
|
||
;; '(emacs18) '(emacs19)))))
|
||
|
||
;; (defun byte-compiler-options-handler (&rest args)
|
||
;; (let (key val desc choices)
|
||
;; (while args
|
||
;; (if (or (atom (car args)) (nthcdr 2 (car args)) (null (cdr (car args))))
|
||
;; (error "Malformed byte-compiler option `%s'" (car args)))
|
||
;; (setq key (car (car args))
|
||
;; val (car (cdr (car args)))
|
||
;; desc (assq key byte-compiler-valid-options))
|
||
;; (or desc
|
||
;; (error "Unknown byte-compiler option `%s'" key))
|
||
;; (setq choices (nth 2 desc))
|
||
;; (if (consp (car choices))
|
||
;; (let (this
|
||
;; (handler 'cons)
|
||
;; (ret (and (memq (car val) '(+ -))
|
||
;; (copy-sequence (if (eq t (symbol-value (nth 1 desc)))
|
||
;; choices
|
||
;; (symbol-value (nth 1 desc)))))))
|
||
;; (setq choices (car choices))
|
||
;; (while val
|
||
;; (setq this (car val))
|
||
;; (cond ((memq this choices)
|
||
;; (setq ret (funcall handler this ret)))
|
||
;; ((eq this '+) (setq handler 'cons))
|
||
;; ((eq this '-) (setq handler 'delq))
|
||
;; ((error "`%s' only accepts %s" key choices)))
|
||
;; (setq val (cdr val)))
|
||
;; (set (nth 1 desc) ret))
|
||
;; (or (memq val choices)
|
||
;; (error "`%s' must be one of `%s'" key choices))
|
||
;; (set (nth 1 desc) (eval (nth 3 desc))))
|
||
;; (setq args (cdr args)))
|
||
;; nil))
|
||
|
||
;;; sanity-checking arglists
|
||
|
||
(defun byte-compile-fdefinition (name macro-p)
|
||
(let* ((list (if macro-p
|
||
byte-compile-macro-environment
|
||
byte-compile-function-environment))
|
||
(env (cdr (assq name list))))
|
||
(or env
|
||
(let ((fn name))
|
||
(while (and (symbolp fn)
|
||
(fboundp fn)
|
||
(or (symbolp (symbol-function fn))
|
||
(consp (symbol-function fn))
|
||
(and (not macro-p)
|
||
(byte-code-function-p (symbol-function fn)))))
|
||
(setq fn (symbol-function fn)))
|
||
(if (and (not macro-p) (byte-code-function-p fn))
|
||
fn
|
||
(and (consp fn)
|
||
(if (eq 'macro (car fn))
|
||
(cdr fn)
|
||
(if macro-p
|
||
nil
|
||
(if (eq 'autoload (car fn))
|
||
nil
|
||
fn)))))))))
|
||
|
||
(defun byte-compile-arglist-signature (arglist)
|
||
(let ((args 0)
|
||
opts
|
||
restp)
|
||
(while arglist
|
||
(cond ((eq (car arglist) '&optional)
|
||
(or opts (setq opts 0)))
|
||
((eq (car arglist) '&rest)
|
||
(if (cdr arglist)
|
||
(setq restp t
|
||
arglist nil)))
|
||
(t
|
||
(if opts
|
||
(setq opts (1+ opts))
|
||
(setq args (1+ args)))))
|
||
(setq arglist (cdr arglist)))
|
||
(cons args (if restp nil (if opts (+ args opts) args)))))
|
||
|
||
|
||
(defun byte-compile-arglist-signatures-congruent-p (old new)
|
||
(not (or
|
||
(> (car new) (car old)) ; requires more args now
|
||
(and (null (cdr old)) ; took rest-args, doesn't any more
|
||
(cdr new))
|
||
(and (cdr new) (cdr old) ; can't take as many args now
|
||
(< (cdr new) (cdr old)))
|
||
)))
|
||
|
||
(defun byte-compile-arglist-signature-string (signature)
|
||
(cond ((null (cdr signature))
|
||
(format "%d+" (car signature)))
|
||
((= (car signature) (cdr signature))
|
||
(format "%d" (car signature)))
|
||
(t (format "%d-%d" (car signature) (cdr signature)))))
|
||
|
||
|
||
;; Warn if the form is calling a function with the wrong number of arguments.
|
||
(defun byte-compile-callargs-warn (form)
|
||
(let* ((def (or (byte-compile-fdefinition (car form) nil)
|
||
(byte-compile-fdefinition (car form) t)))
|
||
(sig (and def (byte-compile-arglist-signature
|
||
(if (eq 'lambda (car-safe def))
|
||
(nth 1 def)
|
||
(if (byte-code-function-p def)
|
||
(aref def 0)
|
||
'(&rest def))))))
|
||
(ncall (length (cdr form))))
|
||
(if sig
|
||
(if (or (< ncall (car sig))
|
||
(and (cdr sig) (> ncall (cdr sig))))
|
||
(byte-compile-warn
|
||
"%s called with %d argument%s, but %s %s"
|
||
(car form) ncall
|
||
(if (= 1 ncall) "" "s")
|
||
(if (< ncall (car sig))
|
||
"requires"
|
||
"accepts only")
|
||
(byte-compile-arglist-signature-string sig)))
|
||
(or (and (fboundp (car form)) ; might be a subr or autoload.
|
||
(not (get (car form) 'byte-compile-noruntime)))
|
||
(eq (car form) byte-compile-current-form) ; ## this doesn't work
|
||
; with recursion.
|
||
;; It's a currently-undefined function.
|
||
;; Remember number of args in call.
|
||
(let ((cons (assq (car form) byte-compile-unresolved-functions))
|
||
(n (length (cdr form))))
|
||
(if cons
|
||
(or (memq n (cdr cons))
|
||
(setcdr cons (cons n (cdr cons))))
|
||
(setq byte-compile-unresolved-functions
|
||
(cons (list (car form) n)
|
||
byte-compile-unresolved-functions))))))))
|
||
|
||
;; Warn if the function or macro is being redefined with a different
|
||
;; number of arguments.
|
||
(defun byte-compile-arglist-warn (form macrop)
|
||
(let ((old (byte-compile-fdefinition (nth 1 form) macrop)))
|
||
(if old
|
||
(let ((sig1 (byte-compile-arglist-signature
|
||
(if (eq 'lambda (car-safe old))
|
||
(nth 1 old)
|
||
(if (byte-code-function-p old)
|
||
(aref old 0)
|
||
'(&rest def)))))
|
||
(sig2 (byte-compile-arglist-signature (nth 2 form))))
|
||
(or (byte-compile-arglist-signatures-congruent-p sig1 sig2)
|
||
(byte-compile-warn "%s %s used to take %s %s, now takes %s"
|
||
(if (eq (car form) 'defun) "function" "macro")
|
||
(nth 1 form)
|
||
(byte-compile-arglist-signature-string sig1)
|
||
(if (equal sig1 '(1 . 1)) "argument" "arguments")
|
||
(byte-compile-arglist-signature-string sig2))))
|
||
;; This is the first definition. See if previous calls are compatible.
|
||
(let ((calls (assq (nth 1 form) byte-compile-unresolved-functions))
|
||
nums sig min max)
|
||
(if calls
|
||
(progn
|
||
(setq sig (byte-compile-arglist-signature (nth 2 form))
|
||
nums (sort (copy-sequence (cdr calls)) (function <))
|
||
min (car nums)
|
||
max (car (nreverse nums)))
|
||
(if (or (< min (car sig))
|
||
(and (cdr sig) (> max (cdr sig))))
|
||
(byte-compile-warn
|
||
"%s being defined to take %s%s, but was previously called with %s"
|
||
(nth 1 form)
|
||
(byte-compile-arglist-signature-string sig)
|
||
(if (equal sig '(1 . 1)) " arg" " args")
|
||
(byte-compile-arglist-signature-string (cons min max))))
|
||
|
||
(setq byte-compile-unresolved-functions
|
||
(delq calls byte-compile-unresolved-functions)))))
|
||
)))
|
||
|
||
(defun byte-compile-print-syms (str1 strn syms)
|
||
(cond
|
||
((cdr syms)
|
||
(let* ((str strn)
|
||
(L (length str))
|
||
s)
|
||
(while syms
|
||
(setq s (symbol-name (pop syms))
|
||
L (+ L (length s) 2))
|
||
(if (< L (1- fill-column))
|
||
(setq str (concat str " " s (and syms ",")))
|
||
(setq str (concat str "\n " s (and syms ","))
|
||
L (+ (length s) 4))))
|
||
(byte-compile-warn "%s" str)))
|
||
(syms
|
||
(byte-compile-warn str1 (car syms)))))
|
||
|
||
;; If we have compiled any calls to functions which are not known to be
|
||
;; defined, issue a warning enumerating them.
|
||
;; `unresolved' in the list `byte-compile-warnings' disables this.
|
||
(defun byte-compile-warn-about-unresolved-functions ()
|
||
(when (memq 'unresolved byte-compile-warnings)
|
||
(let ((byte-compile-current-form "the end of the data")
|
||
(noruntime nil)
|
||
(unresolved nil))
|
||
;; Separate the functions that will not be available at runtime
|
||
;; from the truly unresolved ones.
|
||
(dolist (f byte-compile-unresolved-functions)
|
||
(setq f (car f))
|
||
(if (fboundp f) (push f noruntime) (push f unresolved)))
|
||
;; Complain about the no-run-time functions
|
||
(byte-compile-print-syms
|
||
"The function `%s' might not be defined at runtime."
|
||
"The following functions might not be defined at runtime:"
|
||
noruntime)
|
||
;; Complain about the unresolved functions
|
||
(byte-compile-print-syms
|
||
"The function `%s' is not known to be defined."
|
||
"The following functions are not known to be defined:"
|
||
unresolved)))
|
||
nil)
|
||
|
||
|
||
(defsubst byte-compile-const-symbol-p (symbol)
|
||
(or (memq symbol '(nil t))
|
||
(keywordp symbol)))
|
||
|
||
(defmacro byte-compile-constp (form)
|
||
"Return non-nil if FORM is a constant."
|
||
`(cond ((consp ,form) (eq (car ,form) 'quote))
|
||
((not (symbolp ,form)))
|
||
((byte-compile-const-symbol-p ,form))))
|
||
|
||
(defmacro byte-compile-close-variables (&rest body)
|
||
(cons 'let
|
||
(cons '(;;
|
||
;; Close over these variables to encapsulate the
|
||
;; compilation state
|
||
;;
|
||
(byte-compile-macro-environment
|
||
;; Copy it because the compiler may patch into the
|
||
;; macroenvironment.
|
||
(copy-alist byte-compile-initial-macro-environment))
|
||
(byte-compile-function-environment nil)
|
||
(byte-compile-bound-variables nil)
|
||
(byte-compile-free-references nil)
|
||
(byte-compile-free-assignments nil)
|
||
;;
|
||
;; Close over these variables so that `byte-compiler-options'
|
||
;; can change them on a per-file basis.
|
||
;;
|
||
(byte-compile-verbose byte-compile-verbose)
|
||
(byte-optimize byte-optimize)
|
||
(byte-compile-compatibility byte-compile-compatibility)
|
||
(byte-compile-dynamic byte-compile-dynamic)
|
||
(byte-compile-dynamic-docstrings
|
||
byte-compile-dynamic-docstrings)
|
||
;; (byte-compile-generate-emacs19-bytecodes
|
||
;; byte-compile-generate-emacs19-bytecodes)
|
||
(byte-compile-warnings (if (eq byte-compile-warnings t)
|
||
byte-compile-warning-types
|
||
byte-compile-warnings))
|
||
)
|
||
body)))
|
||
|
||
(defvar byte-compile-warnings-point-max nil)
|
||
(defmacro displaying-byte-compile-warnings (&rest body)
|
||
(list 'let
|
||
'((byte-compile-warnings-point-max byte-compile-warnings-point-max))
|
||
;; Log the file name.
|
||
'(byte-compile-log-file)
|
||
;; Record how much is logged now.
|
||
;; We will display the log buffer if anything more is logged
|
||
;; before the end of BODY.
|
||
'(or byte-compile-warnings-point-max
|
||
(save-excursion
|
||
(set-buffer (get-buffer-create "*Compile-Log*"))
|
||
(setq byte-compile-warnings-point-max (point-max))))
|
||
(list 'unwind-protect
|
||
(list 'condition-case 'error-info
|
||
(cons 'progn body)
|
||
'(error
|
||
(byte-compile-report-error error-info)))
|
||
'(save-excursion
|
||
;; If there were compilation warnings, display them.
|
||
(set-buffer "*Compile-Log*")
|
||
(if (= byte-compile-warnings-point-max (point-max))
|
||
nil
|
||
(select-window
|
||
(prog1 (selected-window)
|
||
(select-window (display-buffer (current-buffer)))
|
||
(goto-char byte-compile-warnings-point-max)
|
||
(beginning-of-line)
|
||
(forward-line -1)
|
||
(recenter 0))))))))
|
||
|
||
|
||
;;;###autoload
|
||
(defun byte-force-recompile (directory)
|
||
"Recompile every `.el' file in DIRECTORY that already has a `.elc' file.
|
||
Files in subdirectories of DIRECTORY are processed also."
|
||
(interactive "DByte force recompile (directory): ")
|
||
(byte-recompile-directory directory nil t))
|
||
|
||
;;;###autoload
|
||
(defun byte-recompile-directory (directory &optional arg force)
|
||
"Recompile every `.el' file in DIRECTORY that needs recompilation.
|
||
This is if a `.elc' file exists but is older than the `.el' file.
|
||
Files in subdirectories of DIRECTORY are processed also.
|
||
|
||
If the `.elc' file does not exist, normally the `.el' file is *not* compiled.
|
||
But a prefix argument (optional second arg) means ask user,
|
||
for each such `.el' file, whether to compile it. Prefix argument 0 means
|
||
don't ask and compile the file anyway.
|
||
|
||
A nonzero prefix argument also means ask about each subdirectory.
|
||
|
||
If the third argument FORCE is non-nil,
|
||
recompile every `.el' file that already has a `.elc' file."
|
||
(interactive "DByte recompile directory: \nP")
|
||
(if arg
|
||
(setq arg (prefix-numeric-value arg)))
|
||
(if noninteractive
|
||
nil
|
||
(save-some-buffers)
|
||
(force-mode-line-update))
|
||
(let ((directories (list (expand-file-name directory)))
|
||
(file-count 0)
|
||
(dir-count 0)
|
||
last-dir)
|
||
(displaying-byte-compile-warnings
|
||
(while directories
|
||
(setq directory (car directories))
|
||
(message "Checking %s..." directory)
|
||
(let ((files (directory-files directory))
|
||
source dest)
|
||
(while files
|
||
(setq source (expand-file-name (car files) directory))
|
||
(if (and (not (member (car files) '("." ".." "RCS" "CVS")))
|
||
(file-directory-p source)
|
||
(not (file-symlink-p source)))
|
||
;; This file is a subdirectory. Handle them differently.
|
||
(when (or (null arg)
|
||
(eq 0 arg)
|
||
(y-or-n-p (concat "Check " source "? ")))
|
||
(setq directories
|
||
(nconc directories (list source))))
|
||
;; It is an ordinary file. Decide whether to compile it.
|
||
(if (and (string-match emacs-lisp-file-regexp source)
|
||
(not (auto-save-file-name-p source))
|
||
(setq dest (byte-compile-dest-file source))
|
||
(if (file-exists-p dest)
|
||
;; File was already compiled.
|
||
(or force (file-newer-than-file-p source dest))
|
||
;; No compiled file exists yet.
|
||
(and arg
|
||
(or (eq 0 arg)
|
||
(y-or-n-p (concat "Compile " source "? "))))))
|
||
(progn (if (and noninteractive (not byte-compile-verbose))
|
||
(message "Compiling %s..." source))
|
||
(byte-compile-file source)
|
||
(or noninteractive
|
||
(message "Checking %s..." directory))
|
||
(setq file-count (1+ file-count))
|
||
(if (not (eq last-dir directory))
|
||
(setq last-dir directory
|
||
dir-count (1+ dir-count)))
|
||
)))
|
||
(setq files (cdr files))))
|
||
(setq directories (cdr directories))))
|
||
(message "Done (Total of %d file%s compiled%s)"
|
||
file-count (if (= file-count 1) "" "s")
|
||
(if (> dir-count 1) (format " in %d directories" dir-count) ""))))
|
||
|
||
;;;###autoload
|
||
(defun byte-compile-file (filename &optional load)
|
||
"Compile a file of Lisp code named FILENAME into a file of byte code.
|
||
The output file's name is made by appending `c' to the end of FILENAME.
|
||
With prefix arg (noninteractively: 2nd arg), load the file after compiling.
|
||
The value is t if there were no errors, nil if errors."
|
||
;; (interactive "fByte compile file: \nP")
|
||
(interactive
|
||
(let ((file buffer-file-name)
|
||
(file-name nil)
|
||
(file-dir nil))
|
||
(and file
|
||
(eq (cdr (assq 'major-mode (buffer-local-variables)))
|
||
'emacs-lisp-mode)
|
||
(setq file-name (file-name-nondirectory file)
|
||
file-dir (file-name-directory file)))
|
||
(list (read-file-name (if current-prefix-arg
|
||
"Byte compile and load file: "
|
||
"Byte compile file: ")
|
||
file-dir file-name nil)
|
||
current-prefix-arg)))
|
||
;; Expand now so we get the current buffer's defaults
|
||
(setq filename (expand-file-name filename))
|
||
|
||
;; If we're compiling a file that's in a buffer and is modified, offer
|
||
;; to save it first.
|
||
(or noninteractive
|
||
(let ((b (get-file-buffer (expand-file-name filename))))
|
||
(if (and b (buffer-modified-p b)
|
||
(y-or-n-p (format "Save buffer %s first? " (buffer-name b))))
|
||
(save-excursion (set-buffer b) (save-buffer)))))
|
||
|
||
(if byte-compile-verbose
|
||
(message "Compiling %s..." filename))
|
||
(let ((byte-compile-current-file filename)
|
||
(set-auto-coding-for-load t)
|
||
target-file input-buffer output-buffer
|
||
byte-compile-dest-file)
|
||
(setq target-file (byte-compile-dest-file filename))
|
||
(setq byte-compile-dest-file target-file)
|
||
(save-excursion
|
||
(setq input-buffer (get-buffer-create " *Compiler Input*"))
|
||
(set-buffer input-buffer)
|
||
(erase-buffer)
|
||
(setq buffer-file-coding-system nil)
|
||
;; Always compile an Emacs Lisp file as multibyte
|
||
;; unless the file itself forces unibyte with -*-coding: raw-text;-*-
|
||
(set-buffer-multibyte t)
|
||
(insert-file-contents filename)
|
||
;; Mimic the way after-insert-file-set-buffer-file-coding-system
|
||
;; can make the buffer unibyte when visiting this file.
|
||
(when (or (eq last-coding-system-used 'no-conversion)
|
||
(eq (coding-system-type last-coding-system-used) 5))
|
||
;; For coding systems no-conversion and raw-text...,
|
||
;; edit the buffer as unibyte.
|
||
(set-buffer-multibyte nil))
|
||
;; Run hooks including the uncompression hook.
|
||
;; If they change the file name, then change it for the output also.
|
||
(let ((buffer-file-name filename)
|
||
(default-major-mode 'emacs-lisp-mode)
|
||
(enable-local-eval nil))
|
||
(normal-mode)
|
||
(setq filename buffer-file-name))
|
||
;; Set the default directory, in case an eval-when-compile uses it.
|
||
(setq default-directory (file-name-directory filename)))
|
||
(setq byte-compiler-error-flag nil)
|
||
;; It is important that input-buffer not be current at this call,
|
||
;; so that the value of point set in input-buffer
|
||
;; within byte-compile-from-buffer lingers in that buffer.
|
||
(setq output-buffer (byte-compile-from-buffer input-buffer filename))
|
||
(if byte-compiler-error-flag
|
||
nil
|
||
(if byte-compile-verbose
|
||
(message "Compiling %s...done" filename))
|
||
(kill-buffer input-buffer)
|
||
(save-excursion
|
||
(set-buffer output-buffer)
|
||
(goto-char (point-max))
|
||
(insert "\n") ; aaah, unix.
|
||
(let ((vms-stmlf-recfm t))
|
||
(if (file-writable-p target-file)
|
||
;; We must disable any code conversion here.
|
||
(let ((coding-system-for-write 'no-conversion))
|
||
(if (or (eq system-type 'ms-dos) (eq system-type 'windows-nt))
|
||
(setq buffer-file-type t))
|
||
(write-region 1 (point-max) target-file))
|
||
;; This is just to give a better error message than
|
||
;; write-region
|
||
(signal 'file-error
|
||
(list "Opening output file"
|
||
(if (file-exists-p target-file)
|
||
"cannot overwrite file"
|
||
"directory not writable or nonexistent")
|
||
target-file))))
|
||
(kill-buffer (current-buffer)))
|
||
(if (and byte-compile-generate-call-tree
|
||
(or (eq t byte-compile-generate-call-tree)
|
||
(y-or-n-p (format "Report call tree for %s? " filename))))
|
||
(save-excursion
|
||
(display-call-tree filename)))
|
||
(if load
|
||
(load target-file))
|
||
t)))
|
||
|
||
;;(defun byte-compile-and-load-file (&optional filename)
|
||
;; "Compile a file of Lisp code named FILENAME into a file of byte code,
|
||
;;and then load it. The output file's name is made by appending \"c\" to
|
||
;;the end of FILENAME."
|
||
;; (interactive)
|
||
;; (if filename ; I don't get it, (interactive-p) doesn't always work
|
||
;; (byte-compile-file filename t)
|
||
;; (let ((current-prefix-arg '(4)))
|
||
;; (call-interactively 'byte-compile-file))))
|
||
|
||
;;(defun byte-compile-buffer (&optional buffer)
|
||
;; "Byte-compile and evaluate contents of BUFFER (default: the current buffer)."
|
||
;; (interactive "bByte compile buffer: ")
|
||
;; (setq buffer (if buffer (get-buffer buffer) (current-buffer)))
|
||
;; (message "Compiling %s..." (buffer-name buffer))
|
||
;; (let* ((filename (or (buffer-file-name buffer)
|
||
;; (concat "#<buffer " (buffer-name buffer) ">")))
|
||
;; (byte-compile-current-file buffer))
|
||
;; (byte-compile-from-buffer buffer nil))
|
||
;; (message "Compiling %s...done" (buffer-name buffer))
|
||
;; t)
|
||
|
||
;;; compiling a single function
|
||
;;;###autoload
|
||
(defun compile-defun (&optional arg)
|
||
"Compile and evaluate the current top-level form.
|
||
Print the result in the minibuffer.
|
||
With argument, insert value in current buffer after the form."
|
||
(interactive "P")
|
||
(save-excursion
|
||
(end-of-defun)
|
||
(beginning-of-defun)
|
||
(let* ((byte-compile-current-file nil)
|
||
(byte-compile-last-warned-form 'nothing)
|
||
(value (eval (displaying-byte-compile-warnings
|
||
(byte-compile-sexp (read (current-buffer)))))))
|
||
(cond (arg
|
||
(message "Compiling from buffer... done.")
|
||
(prin1 value (current-buffer))
|
||
(insert "\n"))
|
||
((message "%s" (prin1-to-string value)))))))
|
||
|
||
|
||
(defun byte-compile-from-buffer (inbuffer &optional filename)
|
||
;; Filename is used for the loading-into-Emacs-18 error message.
|
||
(let (outbuffer
|
||
;; Prevent truncation of flonums and lists as we read and print them
|
||
(float-output-format nil)
|
||
(case-fold-search nil)
|
||
(print-length nil)
|
||
(print-level nil)
|
||
;; Prevent edebug from interfering when we compile
|
||
;; and put the output into a file.
|
||
(edebug-all-defs nil)
|
||
(edebug-all-forms nil)
|
||
;; Simulate entry to byte-compile-top-level
|
||
(byte-compile-constants nil)
|
||
(byte-compile-variables nil)
|
||
(byte-compile-tag-number 0)
|
||
(byte-compile-depth 0)
|
||
(byte-compile-maxdepth 0)
|
||
(byte-compile-output nil)
|
||
;; #### This is bound in b-c-close-variables.
|
||
;; (byte-compile-warnings (if (eq byte-compile-warnings t)
|
||
;; byte-compile-warning-types
|
||
;; byte-compile-warnings))
|
||
)
|
||
(byte-compile-close-variables
|
||
(save-excursion
|
||
(setq outbuffer
|
||
(set-buffer (get-buffer-create " *Compiler Output*")))
|
||
(set-buffer-multibyte t)
|
||
(erase-buffer)
|
||
;; (emacs-lisp-mode)
|
||
(setq case-fold-search nil)
|
||
;; This is a kludge. Some operating systems (OS/2, DOS) need to
|
||
;; write files containing binary information specially.
|
||
;; Under most circumstances, such files will be in binary
|
||
;; overwrite mode, so those OS's use that flag to guess how
|
||
;; they should write their data. Advise them that .elc files
|
||
;; need to be written carefully.
|
||
(setq overwrite-mode 'overwrite-mode-binary))
|
||
(displaying-byte-compile-warnings
|
||
(and filename (byte-compile-insert-header filename inbuffer outbuffer))
|
||
(save-excursion
|
||
(set-buffer inbuffer)
|
||
(goto-char 1)
|
||
|
||
;; Compile the forms from the input buffer.
|
||
(while (progn
|
||
(while (progn (skip-chars-forward " \t\n\^l")
|
||
(looking-at ";"))
|
||
(forward-line 1))
|
||
(not (eobp)))
|
||
(byte-compile-file-form (read inbuffer)))
|
||
|
||
;; Compile pending forms at end of file.
|
||
(byte-compile-flush-pending)
|
||
(byte-compile-warn-about-unresolved-functions)
|
||
;; Should we always do this? When calling multiple files, it
|
||
;; would be useful to delay this warning until all have
|
||
;; been compiled.
|
||
(setq byte-compile-unresolved-functions nil))
|
||
;; Fix up the header at the front of the output
|
||
;; if the buffer contains multibyte characters.
|
||
(and filename (byte-compile-fix-header filename inbuffer outbuffer))))
|
||
outbuffer))
|
||
|
||
(defun byte-compile-fix-header (filename inbuffer outbuffer)
|
||
(save-excursion
|
||
(set-buffer outbuffer)
|
||
(goto-char (point-min))
|
||
;; See if the buffer has any multibyte characters.
|
||
(skip-chars-forward "\0-\377")
|
||
(when (not (eobp))
|
||
(when (byte-compile-version-cond byte-compile-compatibility)
|
||
(error "Version-18 compatibility not valid with multibyte characters"))
|
||
(goto-char (point-min))
|
||
;; Find the comment that describes the version test.
|
||
(search-forward "\n;;; This file")
|
||
(beginning-of-line)
|
||
(narrow-to-region (point) (point-max))
|
||
;; Find the line of ballast semicolons.
|
||
(search-forward ";;;;;;;;;;")
|
||
(beginning-of-line)
|
||
|
||
(narrow-to-region (point-min) (point))
|
||
(let ((old-header-end (point))
|
||
delta)
|
||
(goto-char (point-min))
|
||
(delete-region (point) (progn (re-search-forward "^(")
|
||
(beginning-of-line)
|
||
(point)))
|
||
(insert ";;; This file contains multibyte non-ASCII characters\n"
|
||
";;; and therefore cannot be loaded into Emacs 19.\n")
|
||
;; Replace "19" or "19.29" with "20", twice.
|
||
(re-search-forward "19\\(\\.[0-9]+\\)")
|
||
(replace-match "20")
|
||
(re-search-forward "19\\(\\.[0-9]+\\)")
|
||
(replace-match "20")
|
||
;; Now compensate for the change in size,
|
||
;; to make sure all positions in the file remain valid.
|
||
(setq delta (- (point-max) old-header-end))
|
||
(goto-char (point-max))
|
||
(widen)
|
||
(delete-char delta)))))
|
||
|
||
(defun byte-compile-insert-header (filename inbuffer outbuffer)
|
||
(set-buffer inbuffer)
|
||
(let ((dynamic-docstrings byte-compile-dynamic-docstrings)
|
||
(dynamic byte-compile-dynamic))
|
||
(set-buffer outbuffer)
|
||
(goto-char 1)
|
||
;; The magic number of .elc files is ";ELC", or 0x3B454C43. After
|
||
;; that is the file-format version number (18, 19 or 20) as a
|
||
;; byte, followed by some nulls. The primary motivation for doing
|
||
;; this is to get some binary characters up in the first line of
|
||
;; the file so that `diff' will simply say "Binary files differ"
|
||
;; instead of actually doing a diff of two .elc files. An extra
|
||
;; benefit is that you can add this to /etc/magic:
|
||
|
||
;; 0 string ;ELC GNU Emacs Lisp compiled file,
|
||
;; >4 byte x version %d
|
||
|
||
(insert
|
||
";ELC"
|
||
(if (byte-compile-version-cond byte-compile-compatibility) 18 20)
|
||
"\000\000\000\n"
|
||
)
|
||
(insert ";;; Compiled by "
|
||
(or (and (boundp 'user-mail-address) user-mail-address)
|
||
(concat (user-login-name) "@" (system-name)))
|
||
" on "
|
||
(current-time-string) "\n;;; from file " filename "\n")
|
||
(insert ";;; in Emacs version " emacs-version "\n")
|
||
(insert ";;; with bytecomp version "
|
||
(progn (string-match "[0-9.]+" byte-compile-version)
|
||
(match-string 0 byte-compile-version))
|
||
"\n;;; "
|
||
(cond
|
||
((eq byte-optimize 'source) "with source-level optimization only")
|
||
((eq byte-optimize 'byte) "with byte-level optimization only")
|
||
(byte-optimize "with all optimizations")
|
||
(t "without optimization"))
|
||
(if (byte-compile-version-cond byte-compile-compatibility)
|
||
"; compiled with Emacs 18 compatibility.\n"
|
||
".\n"))
|
||
(if dynamic
|
||
(insert ";;; Function definitions are lazy-loaded.\n"))
|
||
(if (not (byte-compile-version-cond byte-compile-compatibility))
|
||
(let (intro-string minimum-version)
|
||
;; Figure out which Emacs version to require,
|
||
;; and what comment to use to explain why.
|
||
;; Note that this fails to take account of whether
|
||
;; the buffer contains multibyte characters. We may have to
|
||
;; compensate at the end in byte-compile-fix-header.
|
||
(if dynamic-docstrings
|
||
(setq intro-string
|
||
";;; This file uses dynamic docstrings, first added in Emacs 19.29.\n"
|
||
minimum-version "19.29")
|
||
(setq intro-string
|
||
";;; This file uses opcodes which do not exist in Emacs 18.\n"
|
||
minimum-version "19"))
|
||
;; Now insert the comment and the error check.
|
||
(insert
|
||
"\n"
|
||
intro-string
|
||
;; Have to check if emacs-version is bound so that this works
|
||
;; in files loaded early in loadup.el.
|
||
"(if (and (boundp 'emacs-version)\n"
|
||
;; If there is a name at the end of emacs-version,
|
||
;; don't try to check the version number.
|
||
"\t (< (aref emacs-version (1- (length emacs-version))) ?A)\n"
|
||
"\t (or (and (boundp 'epoch::version) epoch::version)\n"
|
||
(format "\t (string-lessp emacs-version \"%s\")))\n"
|
||
minimum-version)
|
||
" (error \"`"
|
||
;; prin1-to-string is used to quote backslashes.
|
||
(substring (prin1-to-string (file-name-nondirectory filename))
|
||
1 -1)
|
||
(format "' was compiled for Emacs %s or later\"))\n\n"
|
||
minimum-version)
|
||
;; Insert semicolons as ballast, so that byte-compile-fix-header
|
||
;; can delete them so as to keep the buffer positions
|
||
;; constant for the actual compiled code.
|
||
";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\n\n"))
|
||
;; Here if we want Emacs 18 compatibility.
|
||
(when dynamic-docstrings
|
||
(error "Version-18 compatibility doesn't support dynamic doc strings"))
|
||
(when byte-compile-dynamic
|
||
(error "Version-18 compatibility doesn't support dynamic byte code"))
|
||
(insert "(or (boundp 'current-load-list) (setq current-load-list nil))\n"
|
||
"\n"))))
|
||
|
||
(defun byte-compile-output-file-form (form)
|
||
;; writes the given form to the output buffer, being careful of docstrings
|
||
;; in defun, defmacro, defvar, defconst, autoload and
|
||
;; custom-declare-variable because make-docfile is so amazingly stupid.
|
||
;; defalias calls are output directly by byte-compile-file-form-defmumble;
|
||
;; it does not pay to first build the defalias in defmumble and then parse
|
||
;; it here.
|
||
(if (and (memq (car-safe form) '(defun defmacro defvar defconst autoload
|
||
custom-declare-variable))
|
||
(stringp (nth 3 form)))
|
||
(byte-compile-output-docform nil nil '("\n(" 3 ")") form nil
|
||
(memq (car form)
|
||
'(autoload custom-declare-variable)))
|
||
(let ((print-escape-newlines t)
|
||
(print-length nil)
|
||
(print-level nil)
|
||
(print-quoted t)
|
||
(print-gensym t))
|
||
(princ "\n" outbuffer)
|
||
(prin1 form outbuffer)
|
||
nil)))
|
||
|
||
(defun byte-compile-output-docform (preface name info form specindex quoted)
|
||
"Print a form with a doc string. INFO is (prefix doc-index postfix).
|
||
If PREFACE and NAME are non-nil, print them too,
|
||
before INFO and the FORM but after the doc string itself.
|
||
If SPECINDEX is non-nil, it is the index in FORM
|
||
of the function bytecode string. In that case,
|
||
we output that argument and the following argument (the constants vector)
|
||
together, for lazy loading.
|
||
QUOTED says that we have to put a quote before the
|
||
list that represents a doc string reference.
|
||
`autoload' and `custom-declare-variable' need that."
|
||
;; We need to examine byte-compile-dynamic-docstrings
|
||
;; in the input buffer (now current), not in the output buffer.
|
||
(let ((dynamic-docstrings byte-compile-dynamic-docstrings))
|
||
(set-buffer
|
||
(prog1 (current-buffer)
|
||
(set-buffer outbuffer)
|
||
(let (position)
|
||
|
||
;; Insert the doc string, and make it a comment with #@LENGTH.
|
||
(and (>= (nth 1 info) 0)
|
||
dynamic-docstrings
|
||
(not byte-compile-compatibility)
|
||
(progn
|
||
;; Make the doc string start at beginning of line
|
||
;; for make-docfile's sake.
|
||
(insert "\n")
|
||
(setq position
|
||
(byte-compile-output-as-comment
|
||
(nth (nth 1 info) form) nil))
|
||
(setq position (position-bytes position))
|
||
;; If the doc string starts with * (a user variable),
|
||
;; negate POSITION.
|
||
(if (and (stringp (nth (nth 1 info) form))
|
||
(> (length (nth (nth 1 info) form)) 0)
|
||
(eq (aref (nth (nth 1 info) form) 0) ?*))
|
||
(setq position (- position)))))
|
||
|
||
(if preface
|
||
(progn
|
||
(insert preface)
|
||
(prin1 name outbuffer)))
|
||
(insert (car info))
|
||
(let ((print-escape-newlines t)
|
||
(print-quoted t)
|
||
;; For compatibility with code before print-circle,
|
||
;; use a cons cell to say that we want
|
||
;; print-gensym-alist not to be cleared
|
||
;; between calls to print functions.
|
||
(print-gensym '(t))
|
||
;; print-gensym-alist was used before print-circle existed.
|
||
print-gensym-alist
|
||
(print-continuous-numbering t)
|
||
print-number-table
|
||
(index 0))
|
||
(prin1 (car form) outbuffer)
|
||
(while (setq form (cdr form))
|
||
(setq index (1+ index))
|
||
(insert " ")
|
||
(cond ((and (numberp specindex) (= index specindex))
|
||
(let ((position
|
||
(byte-compile-output-as-comment
|
||
(cons (car form) (nth 1 form))
|
||
t)))
|
||
(setq position (position-bytes position))
|
||
(princ (format "(#$ . %d) nil" position) outbuffer)
|
||
(setq form (cdr form))
|
||
(setq index (1+ index))))
|
||
((= index (nth 1 info))
|
||
(if position
|
||
(princ (format (if quoted "'(#$ . %d)" "(#$ . %d)")
|
||
position)
|
||
outbuffer)
|
||
(let ((print-escape-newlines nil))
|
||
(goto-char (prog1 (1+ (point))
|
||
(prin1 (car form) outbuffer)))
|
||
(insert "\\\n")
|
||
(goto-char (point-max)))))
|
||
(t
|
||
(prin1 (car form) outbuffer)))))
|
||
(insert (nth 2 info))))))
|
||
nil)
|
||
|
||
(defun byte-compile-keep-pending (form &optional handler)
|
||
(if (memq byte-optimize '(t source))
|
||
(setq form (byte-optimize-form form t)))
|
||
(if handler
|
||
(let ((for-effect t))
|
||
;; To avoid consing up monstrously large forms at load time, we split
|
||
;; the output regularly.
|
||
(and (memq (car-safe form) '(fset defalias))
|
||
(nthcdr 300 byte-compile-output)
|
||
(byte-compile-flush-pending))
|
||
(funcall handler form)
|
||
(if for-effect
|
||
(byte-compile-discard)))
|
||
(byte-compile-form form t))
|
||
nil)
|
||
|
||
(defun byte-compile-flush-pending ()
|
||
(if byte-compile-output
|
||
(let ((form (byte-compile-out-toplevel t 'file)))
|
||
(cond ((eq (car-safe form) 'progn)
|
||
(mapcar 'byte-compile-output-file-form (cdr form)))
|
||
(form
|
||
(byte-compile-output-file-form form)))
|
||
(setq byte-compile-constants nil
|
||
byte-compile-variables nil
|
||
byte-compile-depth 0
|
||
byte-compile-maxdepth 0
|
||
byte-compile-output nil))))
|
||
|
||
(defun byte-compile-file-form (form)
|
||
(let ((byte-compile-current-form nil) ; close over this for warnings.
|
||
handler)
|
||
(cond
|
||
((not (consp form))
|
||
(byte-compile-keep-pending form))
|
||
((and (symbolp (car form))
|
||
(setq handler (get (car form) 'byte-hunk-handler)))
|
||
(cond ((setq form (funcall handler form))
|
||
(byte-compile-flush-pending)
|
||
(byte-compile-output-file-form form))))
|
||
((eq form (setq form (macroexpand form byte-compile-macro-environment)))
|
||
(byte-compile-keep-pending form))
|
||
(t
|
||
(byte-compile-file-form form)))))
|
||
|
||
;; Functions and variables with doc strings must be output separately,
|
||
;; so make-docfile can recognise them. Most other things can be output
|
||
;; as byte-code.
|
||
|
||
(put 'defsubst 'byte-hunk-handler 'byte-compile-file-form-defsubst)
|
||
(defun byte-compile-file-form-defsubst (form)
|
||
(cond ((assq (nth 1 form) byte-compile-unresolved-functions)
|
||
(setq byte-compile-current-form (nth 1 form))
|
||
(byte-compile-warn "defsubst %s was used before it was defined"
|
||
(nth 1 form))))
|
||
(byte-compile-file-form
|
||
(macroexpand form byte-compile-macro-environment))
|
||
;; Return nil so the form is not output twice.
|
||
nil)
|
||
|
||
(put 'autoload 'byte-hunk-handler 'byte-compile-file-form-autoload)
|
||
(defun byte-compile-file-form-autoload (form)
|
||
(and (let ((form form))
|
||
(while (if (setq form (cdr form)) (byte-compile-constp (car form))))
|
||
(null form)) ;Constants only
|
||
(eval (nth 5 form)) ;Macro
|
||
(eval form)) ;Define the autoload.
|
||
;; Avoid undefined function warnings for the autoload.
|
||
(if (and (consp (nth 1 form))
|
||
(eq (car (nth 1 form)) 'quote)
|
||
(consp (cdr (nth 1 form)))
|
||
(symbolp (nth 1 (nth 1 form))))
|
||
(add-to-list 'byte-compile-function-environment
|
||
(cons (nth 1 (nth 1 form))
|
||
form)))
|
||
(if (stringp (nth 3 form))
|
||
form
|
||
;; No doc string, so we can compile this as a normal form.
|
||
(byte-compile-keep-pending form 'byte-compile-normal-call)))
|
||
|
||
(put 'defvar 'byte-hunk-handler 'byte-compile-file-form-defvar)
|
||
(put 'defconst 'byte-hunk-handler 'byte-compile-file-form-defvar)
|
||
(defun byte-compile-file-form-defvar (form)
|
||
(if (null (nth 3 form))
|
||
;; Since there is no doc string, we can compile this as a normal form,
|
||
;; and not do a file-boundary.
|
||
(byte-compile-keep-pending form)
|
||
(if (memq 'free-vars byte-compile-warnings)
|
||
(setq byte-compile-bound-variables
|
||
(cons (nth 1 form) byte-compile-bound-variables)))
|
||
(cond ((consp (nth 2 form))
|
||
(setq form (copy-sequence form))
|
||
(setcar (cdr (cdr form))
|
||
(byte-compile-top-level (nth 2 form) nil 'file))))
|
||
form))
|
||
|
||
(put 'custom-declare-variable 'byte-hunk-handler
|
||
'byte-compile-file-form-custom-declare-variable)
|
||
(defun byte-compile-file-form-custom-declare-variable (form)
|
||
(if (memq 'free-vars byte-compile-warnings)
|
||
(setq byte-compile-bound-variables
|
||
(cons (nth 1 (nth 1 form)) byte-compile-bound-variables)))
|
||
form)
|
||
|
||
(put 'require 'byte-hunk-handler 'byte-compile-file-form-eval-boundary)
|
||
(defun byte-compile-file-form-eval-boundary (form)
|
||
(eval form)
|
||
(byte-compile-keep-pending form 'byte-compile-normal-call))
|
||
|
||
(put 'progn 'byte-hunk-handler 'byte-compile-file-form-progn)
|
||
(put 'prog1 'byte-hunk-handler 'byte-compile-file-form-progn)
|
||
(put 'prog2 'byte-hunk-handler 'byte-compile-file-form-progn)
|
||
(defun byte-compile-file-form-progn (form)
|
||
(mapcar 'byte-compile-file-form (cdr form))
|
||
;; Return nil so the forms are not output twice.
|
||
nil)
|
||
|
||
;; This handler is not necessary, but it makes the output from dont-compile
|
||
;; and similar macros cleaner.
|
||
(put 'eval 'byte-hunk-handler 'byte-compile-file-form-eval)
|
||
(defun byte-compile-file-form-eval (form)
|
||
(if (eq (car-safe (nth 1 form)) 'quote)
|
||
(nth 1 (nth 1 form))
|
||
(byte-compile-keep-pending form)))
|
||
|
||
(put 'defun 'byte-hunk-handler 'byte-compile-file-form-defun)
|
||
(defun byte-compile-file-form-defun (form)
|
||
(byte-compile-file-form-defmumble form nil))
|
||
|
||
(put 'defmacro 'byte-hunk-handler 'byte-compile-file-form-defmacro)
|
||
(defun byte-compile-file-form-defmacro (form)
|
||
(byte-compile-file-form-defmumble form t))
|
||
|
||
(defun byte-compile-file-form-defmumble (form macrop)
|
||
(let* ((name (car (cdr form)))
|
||
(this-kind (if macrop 'byte-compile-macro-environment
|
||
'byte-compile-function-environment))
|
||
(that-kind (if macrop 'byte-compile-function-environment
|
||
'byte-compile-macro-environment))
|
||
(this-one (assq name (symbol-value this-kind)))
|
||
(that-one (assq name (symbol-value that-kind)))
|
||
(byte-compile-free-references nil)
|
||
(byte-compile-free-assignments nil))
|
||
|
||
;; When a function or macro is defined, add it to the call tree so that
|
||
;; we can tell when functions are not used.
|
||
(if byte-compile-generate-call-tree
|
||
(or (assq name byte-compile-call-tree)
|
||
(setq byte-compile-call-tree
|
||
(cons (list name nil nil) byte-compile-call-tree))))
|
||
|
||
(setq byte-compile-current-form name) ; for warnings
|
||
(if (memq 'redefine byte-compile-warnings)
|
||
(byte-compile-arglist-warn form macrop))
|
||
(if byte-compile-verbose
|
||
(message "Compiling %s... (%s)" (or filename "") (nth 1 form)))
|
||
(cond (that-one
|
||
(if (and (memq 'redefine byte-compile-warnings)
|
||
;; don't warn when compiling the stubs in byte-run...
|
||
(not (assq (nth 1 form)
|
||
byte-compile-initial-macro-environment)))
|
||
(byte-compile-warn
|
||
"%s defined multiple times, as both function and macro"
|
||
(nth 1 form)))
|
||
(setcdr that-one nil))
|
||
(this-one
|
||
(if (and (memq 'redefine byte-compile-warnings)
|
||
;; hack: don't warn when compiling the magic internal
|
||
;; byte-compiler macros in byte-run.el...
|
||
(not (assq (nth 1 form)
|
||
byte-compile-initial-macro-environment)))
|
||
(byte-compile-warn "%s %s defined multiple times in this file"
|
||
(if macrop "macro" "function")
|
||
(nth 1 form))))
|
||
((and (fboundp name)
|
||
(eq (car-safe (symbol-function name))
|
||
(if macrop 'lambda 'macro)))
|
||
(if (memq 'redefine byte-compile-warnings)
|
||
(byte-compile-warn "%s %s being redefined as a %s"
|
||
(if macrop "function" "macro")
|
||
(nth 1 form)
|
||
(if macrop "macro" "function")))
|
||
;; shadow existing definition
|
||
(set this-kind
|
||
(cons (cons name nil) (symbol-value this-kind))))
|
||
)
|
||
(let ((body (nthcdr 3 form)))
|
||
(if (and (stringp (car body))
|
||
(symbolp (car-safe (cdr-safe body)))
|
||
(car-safe (cdr-safe body))
|
||
(stringp (car-safe (cdr-safe (cdr-safe body)))))
|
||
(byte-compile-warn "Probable `\"' without `\\' in doc string of %s"
|
||
(nth 1 form))))
|
||
(let* ((new-one (byte-compile-lambda (cons 'lambda (nthcdr 2 form))))
|
||
(code (byte-compile-byte-code-maker new-one)))
|
||
(if this-one
|
||
(setcdr this-one new-one)
|
||
(set this-kind
|
||
(cons (cons name new-one) (symbol-value this-kind))))
|
||
(if (and (stringp (nth 3 form))
|
||
(eq 'quote (car-safe code))
|
||
(eq 'lambda (car-safe (nth 1 code))))
|
||
(cons (car form)
|
||
(cons name (cdr (nth 1 code))))
|
||
(byte-compile-flush-pending)
|
||
(if (not (stringp (nth 3 form)))
|
||
;; No doc string. Provide -1 as the "doc string index"
|
||
;; so that no element will be treated as a doc string.
|
||
(byte-compile-output-docform
|
||
(if (byte-compile-version-cond byte-compile-compatibility)
|
||
"\n(fset '" "\n(defalias '")
|
||
name
|
||
(cond ((atom code)
|
||
(if macrop '(" '(macro . #[" -1 "])") '(" #[" -1 "]")))
|
||
((eq (car code) 'quote)
|
||
(setq code new-one)
|
||
(if macrop '(" '(macro " -1 ")") '(" '(" -1 ")")))
|
||
((if macrop '(" (cons 'macro (" -1 "))") '(" (" -1 ")"))))
|
||
(append code nil)
|
||
(and (atom code) byte-compile-dynamic
|
||
1)
|
||
nil)
|
||
;; Output the form by hand, that's much simpler than having
|
||
;; b-c-output-file-form analyze the defalias.
|
||
(byte-compile-output-docform
|
||
(if (byte-compile-version-cond byte-compile-compatibility)
|
||
"\n(fset '" "\n(defalias '")
|
||
name
|
||
(cond ((atom code)
|
||
(if macrop '(" '(macro . #[" 4 "])") '(" #[" 4 "]")))
|
||
((eq (car code) 'quote)
|
||
(setq code new-one)
|
||
(if macrop '(" '(macro " 2 ")") '(" '(" 2 ")")))
|
||
((if macrop '(" (cons 'macro (" 5 "))") '(" (" 5 ")"))))
|
||
(append code nil)
|
||
(and (atom code) byte-compile-dynamic
|
||
1)
|
||
nil))
|
||
(princ ")" outbuffer)
|
||
nil))))
|
||
|
||
;; Print Lisp object EXP in the output file, inside a comment,
|
||
;; and return the file position it will have.
|
||
;; If QUOTED is non-nil, print with quoting; otherwise, print without quoting.
|
||
(defun byte-compile-output-as-comment (exp quoted)
|
||
(let ((position (point)))
|
||
(set-buffer
|
||
(prog1 (current-buffer)
|
||
(set-buffer outbuffer)
|
||
|
||
;; Insert EXP, and make it a comment with #@LENGTH.
|
||
(insert " ")
|
||
(if quoted
|
||
(prin1 exp outbuffer)
|
||
(princ exp outbuffer))
|
||
(goto-char position)
|
||
;; Quote certain special characters as needed.
|
||
;; get_doc_string in doc.c does the unquoting.
|
||
(while (search-forward "\^A" nil t)
|
||
(replace-match "\^A\^A" t t))
|
||
(goto-char position)
|
||
(while (search-forward "\000" nil t)
|
||
(replace-match "\^A0" t t))
|
||
(goto-char position)
|
||
(while (search-forward "\037" nil t)
|
||
(replace-match "\^A_" t t))
|
||
(goto-char (point-max))
|
||
(insert "\037")
|
||
(goto-char position)
|
||
(insert "#@" (format "%d" (- (position-bytes (point-max))
|
||
(position-bytes position))))
|
||
|
||
;; Save the file position of the object.
|
||
;; Note we should add 1 to skip the space
|
||
;; that we inserted before the actual doc string,
|
||
;; and subtract 1 to convert from an 1-origin Emacs position
|
||
;; to a file position; they cancel.
|
||
(setq position (point))
|
||
(goto-char (point-max))))
|
||
position))
|
||
|
||
|
||
|
||
;;;###autoload
|
||
(defun byte-compile (form)
|
||
"If FORM is a symbol, byte-compile its function definition.
|
||
If FORM is a lambda or a macro, byte-compile it as a function."
|
||
(displaying-byte-compile-warnings
|
||
(byte-compile-close-variables
|
||
(let* ((fun (if (symbolp form)
|
||
(and (fboundp form) (symbol-function form))
|
||
form))
|
||
(macro (eq (car-safe fun) 'macro)))
|
||
(if macro
|
||
(setq fun (cdr fun)))
|
||
(cond ((eq (car-safe fun) 'lambda)
|
||
(setq fun (if macro
|
||
(cons 'macro (byte-compile-lambda fun))
|
||
(byte-compile-lambda fun)))
|
||
(if (symbolp form)
|
||
(defalias form fun)
|
||
fun)))))))
|
||
|
||
(defun byte-compile-sexp (sexp)
|
||
"Compile and return SEXP."
|
||
(displaying-byte-compile-warnings
|
||
(byte-compile-close-variables
|
||
(byte-compile-top-level sexp))))
|
||
|
||
;; Given a function made by byte-compile-lambda, make a form which produces it.
|
||
(defun byte-compile-byte-code-maker (fun)
|
||
(cond
|
||
((byte-compile-version-cond byte-compile-compatibility)
|
||
;; Return (quote (lambda ...)).
|
||
(list 'quote (byte-compile-byte-code-unmake fun)))
|
||
;; ## atom is faster than compiled-func-p.
|
||
((atom fun) ; compiled function.
|
||
;; generate-emacs19-bytecodes must be on, otherwise byte-compile-lambda
|
||
;; would have produced a lambda.
|
||
fun)
|
||
;; b-c-lambda didn't produce a compiled-function, so it's either a trivial
|
||
;; function, or this is Emacs 18, or generate-emacs19-bytecodes is off.
|
||
((let (tmp)
|
||
(if (and (setq tmp (assq 'byte-code (cdr-safe (cdr fun))))
|
||
(null (cdr (memq tmp fun))))
|
||
;; Generate a make-byte-code call.
|
||
(let* ((interactive (assq 'interactive (cdr (cdr fun)))))
|
||
(nconc (list 'make-byte-code
|
||
(list 'quote (nth 1 fun)) ;arglist
|
||
(nth 1 tmp) ;bytes
|
||
(nth 2 tmp) ;consts
|
||
(nth 3 tmp)) ;depth
|
||
(cond ((stringp (nth 2 fun))
|
||
(list (nth 2 fun))) ;doc
|
||
(interactive
|
||
(list nil)))
|
||
(cond (interactive
|
||
(list (if (or (null (nth 1 interactive))
|
||
(stringp (nth 1 interactive)))
|
||
(nth 1 interactive)
|
||
;; Interactive spec is a list or a variable
|
||
;; (if it is correct).
|
||
(list 'quote (nth 1 interactive))))))))
|
||
;; a non-compiled function (probably trivial)
|
||
(list 'quote fun))))))
|
||
|
||
;; Turn a function into an ordinary lambda. Needed for v18 files.
|
||
(defun byte-compile-byte-code-unmake (function)
|
||
(if (consp function)
|
||
function;;It already is a lambda.
|
||
(setq function (append function nil)) ; turn it into a list
|
||
(nconc (list 'lambda (nth 0 function))
|
||
(and (nth 4 function) (list (nth 4 function)))
|
||
(if (nthcdr 5 function)
|
||
(list (cons 'interactive (if (nth 5 function)
|
||
(nthcdr 5 function)))))
|
||
(list (list 'byte-code
|
||
(nth 1 function) (nth 2 function)
|
||
(nth 3 function))))))
|
||
|
||
|
||
;; Byte-compile a lambda-expression and return a valid function.
|
||
;; The value is usually a compiled function but may be the original
|
||
;; lambda-expression.
|
||
(defun byte-compile-lambda (fun)
|
||
(unless (eq 'lambda (car-safe fun))
|
||
(error "Not a lambda list: %S" fun))
|
||
(let* ((arglist (nth 1 fun))
|
||
(byte-compile-bound-variables
|
||
(nconc (and (memq 'free-vars byte-compile-warnings)
|
||
(delq '&rest (delq '&optional (copy-sequence arglist))))
|
||
byte-compile-bound-variables))
|
||
(body (cdr (cdr fun)))
|
||
(doc (if (stringp (car body))
|
||
(prog1 (car body)
|
||
;; Discard the doc string
|
||
;; unless it is the last element of the body.
|
||
(if (cdr body)
|
||
(setq body (cdr body))))))
|
||
(int (assq 'interactive body)))
|
||
(cond (int
|
||
;; Skip (interactive) if it is in front (the most usual location).
|
||
(if (eq int (car body))
|
||
(setq body (cdr body)))
|
||
(cond ((consp (cdr int))
|
||
(if (cdr (cdr int))
|
||
(byte-compile-warn "malformed interactive spec: %s"
|
||
(prin1-to-string int)))
|
||
;; If the interactive spec is a call to `list',
|
||
;; don't compile it, because `call-interactively'
|
||
;; looks at the args of `list'.
|
||
(let ((form (nth 1 int)))
|
||
(while (or (eq (car-safe form) 'let)
|
||
(eq (car-safe form) 'let*)
|
||
(eq (car-safe form) 'save-excursion))
|
||
(while (consp (cdr form))
|
||
(setq form (cdr form)))
|
||
(setq form (car form)))
|
||
(or (eq (car-safe form) 'list)
|
||
(setq int (list 'interactive
|
||
(byte-compile-top-level (nth 1 int)))))))
|
||
((cdr int)
|
||
(byte-compile-warn "malformed interactive spec: %s"
|
||
(prin1-to-string int))))))
|
||
(let ((compiled (byte-compile-top-level (cons 'progn body) nil 'lambda)))
|
||
(if (and (eq 'byte-code (car-safe compiled))
|
||
(not (byte-compile-version-cond
|
||
byte-compile-compatibility)))
|
||
(apply 'make-byte-code
|
||
(append (list arglist)
|
||
;; byte-string, constants-vector, stack depth
|
||
(cdr compiled)
|
||
;; optionally, the doc string.
|
||
(if (or doc int)
|
||
(list doc))
|
||
;; optionally, the interactive spec.
|
||
(if int
|
||
(list (nth 1 int)))))
|
||
(setq compiled
|
||
(nconc (if int (list int))
|
||
(cond ((eq (car-safe compiled) 'progn) (cdr compiled))
|
||
(compiled (list compiled)))))
|
||
(nconc (list 'lambda arglist)
|
||
(if (or doc (stringp (car compiled)))
|
||
(cons doc (cond (compiled)
|
||
(body (list nil))))
|
||
compiled))))))
|
||
|
||
(defun byte-compile-constants-vector ()
|
||
;; Builds the constants-vector from the current variables and constants.
|
||
;; This modifies the constants from (const . nil) to (const . offset).
|
||
;; To keep the byte-codes to look up the vector as short as possible:
|
||
;; First 6 elements are vars, as there are one-byte varref codes for those.
|
||
;; Next up to byte-constant-limit are constants, still with one-byte codes.
|
||
;; Next variables again, to get 2-byte codes for variable lookup.
|
||
;; The rest of the constants and variables need 3-byte byte-codes.
|
||
(let* ((i -1)
|
||
(rest (nreverse byte-compile-variables)) ; nreverse because the first
|
||
(other (nreverse byte-compile-constants)) ; vars often are used most.
|
||
ret tmp
|
||
(limits '(5 ; Use the 1-byte varref codes,
|
||
63 ; 1-constlim ; 1-byte byte-constant codes,
|
||
255 ; 2-byte varref codes,
|
||
65535)) ; 3-byte codes for the rest.
|
||
limit)
|
||
(while (or rest other)
|
||
(setq limit (car limits))
|
||
(while (and rest (not (eq i limit)))
|
||
(if (setq tmp (assq (car (car rest)) ret))
|
||
(setcdr (car rest) (cdr tmp))
|
||
(setcdr (car rest) (setq i (1+ i)))
|
||
(setq ret (cons (car rest) ret)))
|
||
(setq rest (cdr rest)))
|
||
(setq limits (cdr limits)
|
||
rest (prog1 other
|
||
(setq other rest))))
|
||
(apply 'vector (nreverse (mapcar 'car ret)))))
|
||
|
||
;; Given an expression FORM, compile it and return an equivalent byte-code
|
||
;; expression (a call to the function byte-code).
|
||
(defun byte-compile-top-level (form &optional for-effect output-type)
|
||
;; OUTPUT-TYPE advises about how form is expected to be used:
|
||
;; 'eval or nil -> a single form,
|
||
;; 'progn or t -> a list of forms,
|
||
;; 'lambda -> body of a lambda,
|
||
;; 'file -> used at file-level.
|
||
(let ((byte-compile-constants nil)
|
||
(byte-compile-variables nil)
|
||
(byte-compile-tag-number 0)
|
||
(byte-compile-depth 0)
|
||
(byte-compile-maxdepth 0)
|
||
(byte-compile-output nil))
|
||
(if (memq byte-optimize '(t source))
|
||
(setq form (byte-optimize-form form for-effect)))
|
||
(while (and (eq (car-safe form) 'progn) (null (cdr (cdr form))))
|
||
(setq form (nth 1 form)))
|
||
(if (and (eq 'byte-code (car-safe form))
|
||
(not (memq byte-optimize '(t byte)))
|
||
(stringp (nth 1 form)) (vectorp (nth 2 form))
|
||
(natnump (nth 3 form)))
|
||
form
|
||
(byte-compile-form form for-effect)
|
||
(byte-compile-out-toplevel for-effect output-type))))
|
||
|
||
(defun byte-compile-out-toplevel (&optional for-effect output-type)
|
||
(if for-effect
|
||
;; The stack is empty. Push a value to be returned from (byte-code ..).
|
||
(if (eq (car (car byte-compile-output)) 'byte-discard)
|
||
(setq byte-compile-output (cdr byte-compile-output))
|
||
(byte-compile-push-constant
|
||
;; Push any constant - preferably one which already is used, and
|
||
;; a number or symbol - ie not some big sequence. The return value
|
||
;; isn't returned, but it would be a shame if some textually large
|
||
;; constant was not optimized away because we chose to return it.
|
||
(and (not (assq nil byte-compile-constants)) ; Nil is often there.
|
||
(let ((tmp (reverse byte-compile-constants)))
|
||
(while (and tmp (not (or (symbolp (car (car tmp)))
|
||
(numberp (car (car tmp))))))
|
||
(setq tmp (cdr tmp)))
|
||
(car (car tmp)))))))
|
||
(byte-compile-out 'byte-return 0)
|
||
(setq byte-compile-output (nreverse byte-compile-output))
|
||
(if (memq byte-optimize '(t byte))
|
||
(setq byte-compile-output
|
||
(byte-optimize-lapcode byte-compile-output for-effect)))
|
||
|
||
;; Decompile trivial functions:
|
||
;; only constants and variables, or a single funcall except in lambdas.
|
||
;; Except for Lisp_Compiled objects, forms like (foo "hi")
|
||
;; are still quicker than (byte-code "..." [foo "hi"] 2).
|
||
;; Note that even (quote foo) must be parsed just as any subr by the
|
||
;; interpreter, so quote should be compiled into byte-code in some contexts.
|
||
;; What to leave uncompiled:
|
||
;; lambda -> never. we used to leave it uncompiled if the body was
|
||
;; a single atom, but that causes confusion if the docstring
|
||
;; uses the (file . pos) syntax. Besides, now that we have
|
||
;; the Lisp_Compiled type, the compiled form is faster.
|
||
;; eval -> atom, quote or (function atom atom atom)
|
||
;; progn -> as <<same-as-eval>> or (progn <<same-as-eval>> atom)
|
||
;; file -> as progn, but takes both quotes and atoms, and longer forms.
|
||
(let (rest
|
||
(maycall (not (eq output-type 'lambda))) ; t if we may make a funcall.
|
||
tmp body)
|
||
(cond
|
||
;; #### This should be split out into byte-compile-nontrivial-function-p.
|
||
((or (eq output-type 'lambda)
|
||
(nthcdr (if (eq output-type 'file) 50 8) byte-compile-output)
|
||
(assq 'TAG byte-compile-output) ; Not necessary, but speeds up a bit.
|
||
(not (setq tmp (assq 'byte-return byte-compile-output)))
|
||
(progn
|
||
(setq rest (nreverse
|
||
(cdr (memq tmp (reverse byte-compile-output)))))
|
||
(while (cond
|
||
((memq (car (car rest)) '(byte-varref byte-constant))
|
||
(setq tmp (car (cdr (car rest))))
|
||
(if (if (eq (car (car rest)) 'byte-constant)
|
||
(or (consp tmp)
|
||
(and (symbolp tmp)
|
||
(not (byte-compile-const-symbol-p tmp)))))
|
||
(if maycall
|
||
(setq body (cons (list 'quote tmp) body)))
|
||
(setq body (cons tmp body))))
|
||
((and maycall
|
||
;; Allow a funcall if at most one atom follows it.
|
||
(null (nthcdr 3 rest))
|
||
(setq tmp (get (car (car rest)) 'byte-opcode-invert))
|
||
(or (null (cdr rest))
|
||
(and (memq output-type '(file progn t))
|
||
(cdr (cdr rest))
|
||
(eq (car (nth 1 rest)) 'byte-discard)
|
||
(progn (setq rest (cdr rest)) t))))
|
||
(setq maycall nil) ; Only allow one real function call.
|
||
(setq body (nreverse body))
|
||
(setq body (list
|
||
(if (and (eq tmp 'funcall)
|
||
(eq (car-safe (car body)) 'quote))
|
||
(cons (nth 1 (car body)) (cdr body))
|
||
(cons tmp body))))
|
||
(or (eq output-type 'file)
|
||
(not (delq nil (mapcar 'consp (cdr (car body))))))))
|
||
(setq rest (cdr rest)))
|
||
rest))
|
||
(let ((byte-compile-vector (byte-compile-constants-vector)))
|
||
(list 'byte-code (byte-compile-lapcode byte-compile-output)
|
||
byte-compile-vector byte-compile-maxdepth)))
|
||
;; it's a trivial function
|
||
((cdr body) (cons 'progn (nreverse body)))
|
||
((car body)))))
|
||
|
||
;; Given BODY, compile it and return a new body.
|
||
(defun byte-compile-top-level-body (body &optional for-effect)
|
||
(setq body (byte-compile-top-level (cons 'progn body) for-effect t))
|
||
(cond ((eq (car-safe body) 'progn)
|
||
(cdr body))
|
||
(body
|
||
(list body))))
|
||
|
||
;; This is the recursive entry point for compiling each subform of an
|
||
;; expression.
|
||
;; If for-effect is non-nil, byte-compile-form will output a byte-discard
|
||
;; before terminating (ie no value will be left on the stack).
|
||
;; A byte-compile handler may, when for-effect is non-nil, choose output code
|
||
;; which does not leave a value on the stack, and then set for-effect to nil
|
||
;; (to prevent byte-compile-form from outputting the byte-discard).
|
||
;; If a handler wants to call another handler, it should do so via
|
||
;; byte-compile-form, or take extreme care to handle for-effect correctly.
|
||
;; (Use byte-compile-form-do-effect to reset the for-effect flag too.)
|
||
;;
|
||
(defun byte-compile-form (form &optional for-effect)
|
||
(setq form (macroexpand form byte-compile-macro-environment))
|
||
(cond ((not (consp form))
|
||
(cond ((or (not (symbolp form)) (byte-compile-const-symbol-p form))
|
||
(byte-compile-constant form))
|
||
((and for-effect byte-compile-delete-errors)
|
||
(setq for-effect nil))
|
||
(t (byte-compile-variable-ref 'byte-varref form))))
|
||
((symbolp (car form))
|
||
(let* ((fn (car form))
|
||
(handler (get fn 'byte-compile)))
|
||
(if (byte-compile-const-symbol-p fn)
|
||
(byte-compile-warn "%s called as a function" fn))
|
||
(if (and handler
|
||
(or (not (byte-compile-version-cond
|
||
byte-compile-compatibility))
|
||
(not (get (get fn 'byte-opcode) 'emacs19-opcode))))
|
||
(funcall handler form)
|
||
(if (memq 'callargs byte-compile-warnings)
|
||
(byte-compile-callargs-warn form))
|
||
(byte-compile-normal-call form))))
|
||
((and (or (byte-code-function-p (car form))
|
||
(eq (car-safe (car form)) 'lambda))
|
||
;; if the form comes out the same way it went in, that's
|
||
;; because it was malformed, and we couldn't unfold it.
|
||
(not (eq form (setq form (byte-compile-unfold-lambda form)))))
|
||
(byte-compile-form form for-effect)
|
||
(setq for-effect nil))
|
||
((byte-compile-normal-call form)))
|
||
(if for-effect
|
||
(byte-compile-discard)))
|
||
|
||
(defun byte-compile-normal-call (form)
|
||
(if byte-compile-generate-call-tree
|
||
(byte-compile-annotate-call-tree form))
|
||
(byte-compile-push-constant (car form))
|
||
(mapcar 'byte-compile-form (cdr form)) ; wasteful, but faster.
|
||
(byte-compile-out 'byte-call (length (cdr form))))
|
||
|
||
(defun byte-compile-variable-ref (base-op var)
|
||
(if (or (not (symbolp var)) (byte-compile-const-symbol-p var))
|
||
(byte-compile-warn (if (eq base-op 'byte-varbind)
|
||
"Attempt to let-bind %s %s"
|
||
"Variable reference to %s %s")
|
||
(if (symbolp var) "constant" "nonvariable")
|
||
(prin1-to-string var))
|
||
(if (and (get var 'byte-obsolete-variable)
|
||
(memq 'obsolete byte-compile-warnings))
|
||
(let ((ob (get var 'byte-obsolete-variable)))
|
||
(byte-compile-warn "%s is an obsolete variable; %s" var
|
||
(if (stringp ob)
|
||
ob
|
||
(format "use %s instead." ob)))))
|
||
(if (memq 'free-vars byte-compile-warnings)
|
||
(if (eq base-op 'byte-varbind)
|
||
(setq byte-compile-bound-variables
|
||
(cons var byte-compile-bound-variables))
|
||
(or (boundp var)
|
||
(memq var byte-compile-bound-variables)
|
||
(if (eq base-op 'byte-varset)
|
||
(or (memq var byte-compile-free-assignments)
|
||
(progn
|
||
(byte-compile-warn "assignment to free variable %s" var)
|
||
(setq byte-compile-free-assignments
|
||
(cons var byte-compile-free-assignments))))
|
||
(or (memq var byte-compile-free-references)
|
||
(progn
|
||
(byte-compile-warn "reference to free variable %s" var)
|
||
(setq byte-compile-free-references
|
||
(cons var byte-compile-free-references)))))))))
|
||
(let ((tmp (assq var byte-compile-variables)))
|
||
(or tmp
|
||
(setq tmp (list var)
|
||
byte-compile-variables (cons tmp byte-compile-variables)))
|
||
(byte-compile-out base-op tmp)))
|
||
|
||
(defmacro byte-compile-get-constant (const)
|
||
`(or (if (stringp ,const)
|
||
(assoc ,const byte-compile-constants)
|
||
(assq ,const byte-compile-constants))
|
||
(car (setq byte-compile-constants
|
||
(cons (list ,const) byte-compile-constants)))))
|
||
|
||
;; Use this when the value of a form is a constant. This obeys for-effect.
|
||
(defun byte-compile-constant (const)
|
||
(if for-effect
|
||
(setq for-effect nil)
|
||
(byte-compile-out 'byte-constant (byte-compile-get-constant const))))
|
||
|
||
;; Use this for a constant that is not the value of its containing form.
|
||
;; This ignores for-effect.
|
||
(defun byte-compile-push-constant (const)
|
||
(let ((for-effect nil))
|
||
(inline (byte-compile-constant const))))
|
||
|
||
|
||
;; Compile those primitive ordinary functions
|
||
;; which have special byte codes just for speed.
|
||
|
||
(defmacro byte-defop-compiler (function &optional compile-handler)
|
||
;; add a compiler-form for FUNCTION.
|
||
;; If function is a symbol, then the variable "byte-SYMBOL" must name
|
||
;; the opcode to be used. If function is a list, the first element
|
||
;; is the function and the second element is the bytecode-symbol.
|
||
;; COMPILE-HANDLER is the function to use to compile this byte-op, or
|
||
;; may be the abbreviations 0, 1, 2, 3, 0-1, or 1-2.
|
||
;; If it is nil, then the handler is "byte-compile-SYMBOL."
|
||
(let (opcode)
|
||
(if (symbolp function)
|
||
(setq opcode (intern (concat "byte-" (symbol-name function))))
|
||
(setq opcode (car (cdr function))
|
||
function (car function)))
|
||
(let ((fnform
|
||
(list 'put (list 'quote function) ''byte-compile
|
||
(list 'quote
|
||
(or (cdr (assq compile-handler
|
||
'((0 . byte-compile-no-args)
|
||
(1 . byte-compile-one-arg)
|
||
(2 . byte-compile-two-args)
|
||
(3 . byte-compile-three-args)
|
||
(0-1 . byte-compile-zero-or-one-arg)
|
||
(1-2 . byte-compile-one-or-two-args)
|
||
(2-3 . byte-compile-two-or-three-args)
|
||
)))
|
||
compile-handler
|
||
(intern (concat "byte-compile-"
|
||
(symbol-name function))))))))
|
||
(if opcode
|
||
(list 'progn fnform
|
||
(list 'put (list 'quote function)
|
||
''byte-opcode (list 'quote opcode))
|
||
(list 'put (list 'quote opcode)
|
||
''byte-opcode-invert (list 'quote function)))
|
||
fnform))))
|
||
|
||
(defmacro byte-defop-compiler19 (function &optional compile-handler)
|
||
;; Just like byte-defop-compiler, but defines an opcode that will only
|
||
;; be used when byte-compile-compatibility is false.
|
||
(if (and (byte-compile-single-version)
|
||
byte-compile-compatibility)
|
||
;; #### instead of doing nothing, this should do some remprops,
|
||
;; #### to protect against the case where a single-version compiler
|
||
;; #### is loaded into a world that has contained a multi-version one.
|
||
nil
|
||
(list 'progn
|
||
(list 'put
|
||
(list 'quote
|
||
(or (car (cdr-safe function))
|
||
(intern (concat "byte-"
|
||
(symbol-name (or (car-safe function) function))))))
|
||
''emacs19-opcode t)
|
||
(list 'byte-defop-compiler function compile-handler))))
|
||
|
||
(defmacro byte-defop-compiler-1 (function &optional compile-handler)
|
||
(list 'byte-defop-compiler (list function nil) compile-handler))
|
||
|
||
|
||
(put 'byte-call 'byte-opcode-invert 'funcall)
|
||
(put 'byte-list1 'byte-opcode-invert 'list)
|
||
(put 'byte-list2 'byte-opcode-invert 'list)
|
||
(put 'byte-list3 'byte-opcode-invert 'list)
|
||
(put 'byte-list4 'byte-opcode-invert 'list)
|
||
(put 'byte-listN 'byte-opcode-invert 'list)
|
||
(put 'byte-concat2 'byte-opcode-invert 'concat)
|
||
(put 'byte-concat3 'byte-opcode-invert 'concat)
|
||
(put 'byte-concat4 'byte-opcode-invert 'concat)
|
||
(put 'byte-concatN 'byte-opcode-invert 'concat)
|
||
(put 'byte-insertN 'byte-opcode-invert 'insert)
|
||
|
||
(byte-defop-compiler (dot byte-point) 0)
|
||
(byte-defop-compiler (dot-max byte-point-max) 0)
|
||
(byte-defop-compiler (dot-min byte-point-min) 0)
|
||
(byte-defop-compiler point 0)
|
||
;;(byte-defop-compiler mark 0) ;; obsolete
|
||
(byte-defop-compiler point-max 0)
|
||
(byte-defop-compiler point-min 0)
|
||
(byte-defop-compiler following-char 0)
|
||
(byte-defop-compiler preceding-char 0)
|
||
(byte-defop-compiler current-column 0)
|
||
(byte-defop-compiler eolp 0)
|
||
(byte-defop-compiler eobp 0)
|
||
(byte-defop-compiler bolp 0)
|
||
(byte-defop-compiler bobp 0)
|
||
(byte-defop-compiler current-buffer 0)
|
||
;;(byte-defop-compiler read-char 0) ;; obsolete
|
||
(byte-defop-compiler interactive-p 0)
|
||
(byte-defop-compiler19 widen 0)
|
||
(byte-defop-compiler19 end-of-line 0-1)
|
||
(byte-defop-compiler19 forward-char 0-1)
|
||
(byte-defop-compiler19 forward-line 0-1)
|
||
(byte-defop-compiler symbolp 1)
|
||
(byte-defop-compiler consp 1)
|
||
(byte-defop-compiler stringp 1)
|
||
(byte-defop-compiler listp 1)
|
||
(byte-defop-compiler not 1)
|
||
(byte-defop-compiler (null byte-not) 1)
|
||
(byte-defop-compiler car 1)
|
||
(byte-defop-compiler cdr 1)
|
||
(byte-defop-compiler length 1)
|
||
(byte-defop-compiler symbol-value 1)
|
||
(byte-defop-compiler symbol-function 1)
|
||
(byte-defop-compiler (1+ byte-add1) 1)
|
||
(byte-defop-compiler (1- byte-sub1) 1)
|
||
(byte-defop-compiler goto-char 1)
|
||
(byte-defop-compiler char-after 0-1)
|
||
(byte-defop-compiler set-buffer 1)
|
||
;;(byte-defop-compiler set-mark 1) ;; obsolete
|
||
(byte-defop-compiler19 forward-word 1)
|
||
(byte-defop-compiler19 char-syntax 1)
|
||
(byte-defop-compiler19 nreverse 1)
|
||
(byte-defop-compiler19 car-safe 1)
|
||
(byte-defop-compiler19 cdr-safe 1)
|
||
(byte-defop-compiler19 numberp 1)
|
||
(byte-defop-compiler19 integerp 1)
|
||
(byte-defop-compiler19 skip-chars-forward 1-2)
|
||
(byte-defop-compiler19 skip-chars-backward 1-2)
|
||
(byte-defop-compiler eq 2)
|
||
(byte-defop-compiler memq 2)
|
||
(byte-defop-compiler cons 2)
|
||
(byte-defop-compiler aref 2)
|
||
(byte-defop-compiler set 2)
|
||
(byte-defop-compiler (= byte-eqlsign) 2)
|
||
(byte-defop-compiler (< byte-lss) 2)
|
||
(byte-defop-compiler (> byte-gtr) 2)
|
||
(byte-defop-compiler (<= byte-leq) 2)
|
||
(byte-defop-compiler (>= byte-geq) 2)
|
||
(byte-defop-compiler get 2)
|
||
(byte-defop-compiler nth 2)
|
||
(byte-defop-compiler substring 2-3)
|
||
(byte-defop-compiler19 (move-marker byte-set-marker) 2-3)
|
||
(byte-defop-compiler19 set-marker 2-3)
|
||
(byte-defop-compiler19 match-beginning 1)
|
||
(byte-defop-compiler19 match-end 1)
|
||
(byte-defop-compiler19 upcase 1)
|
||
(byte-defop-compiler19 downcase 1)
|
||
(byte-defop-compiler19 string= 2)
|
||
(byte-defop-compiler19 string< 2)
|
||
(byte-defop-compiler19 (string-equal byte-string=) 2)
|
||
(byte-defop-compiler19 (string-lessp byte-string<) 2)
|
||
(byte-defop-compiler19 equal 2)
|
||
(byte-defop-compiler19 nthcdr 2)
|
||
(byte-defop-compiler19 elt 2)
|
||
(byte-defop-compiler19 member 2)
|
||
(byte-defop-compiler19 assq 2)
|
||
(byte-defop-compiler19 (rplaca byte-setcar) 2)
|
||
(byte-defop-compiler19 (rplacd byte-setcdr) 2)
|
||
(byte-defop-compiler19 setcar 2)
|
||
(byte-defop-compiler19 setcdr 2)
|
||
(byte-defop-compiler19 buffer-substring 2)
|
||
(byte-defop-compiler19 delete-region 2)
|
||
(byte-defop-compiler19 narrow-to-region 2)
|
||
(byte-defop-compiler19 (% byte-rem) 2)
|
||
(byte-defop-compiler aset 3)
|
||
|
||
(byte-defop-compiler max byte-compile-associative)
|
||
(byte-defop-compiler min byte-compile-associative)
|
||
(byte-defop-compiler (+ byte-plus) byte-compile-associative)
|
||
(byte-defop-compiler19 (* byte-mult) byte-compile-associative)
|
||
|
||
;;####(byte-defop-compiler19 move-to-column 1)
|
||
(byte-defop-compiler-1 interactive byte-compile-noop)
|
||
|
||
|
||
(defun byte-compile-subr-wrong-args (form n)
|
||
(byte-compile-warn "%s called with %d arg%s, but requires %s"
|
||
(car form) (length (cdr form))
|
||
(if (= 1 (length (cdr form))) "" "s") n)
|
||
;; get run-time wrong-number-of-args error.
|
||
(byte-compile-normal-call form))
|
||
|
||
(defun byte-compile-no-args (form)
|
||
(if (not (= (length form) 1))
|
||
(byte-compile-subr-wrong-args form "none")
|
||
(byte-compile-out (get (car form) 'byte-opcode) 0)))
|
||
|
||
(defun byte-compile-one-arg (form)
|
||
(if (not (= (length form) 2))
|
||
(byte-compile-subr-wrong-args form 1)
|
||
(byte-compile-form (car (cdr form))) ;; Push the argument
|
||
(byte-compile-out (get (car form) 'byte-opcode) 0)))
|
||
|
||
(defun byte-compile-two-args (form)
|
||
(if (not (= (length form) 3))
|
||
(byte-compile-subr-wrong-args form 2)
|
||
(byte-compile-form (car (cdr form))) ;; Push the arguments
|
||
(byte-compile-form (nth 2 form))
|
||
(byte-compile-out (get (car form) 'byte-opcode) 0)))
|
||
|
||
(defun byte-compile-three-args (form)
|
||
(if (not (= (length form) 4))
|
||
(byte-compile-subr-wrong-args form 3)
|
||
(byte-compile-form (car (cdr form))) ;; Push the arguments
|
||
(byte-compile-form (nth 2 form))
|
||
(byte-compile-form (nth 3 form))
|
||
(byte-compile-out (get (car form) 'byte-opcode) 0)))
|
||
|
||
(defun byte-compile-zero-or-one-arg (form)
|
||
(let ((len (length form)))
|
||
(cond ((= len 1) (byte-compile-one-arg (append form '(nil))))
|
||
((= len 2) (byte-compile-one-arg form))
|
||
(t (byte-compile-subr-wrong-args form "0-1")))))
|
||
|
||
(defun byte-compile-one-or-two-args (form)
|
||
(let ((len (length form)))
|
||
(cond ((= len 2) (byte-compile-two-args (append form '(nil))))
|
||
((= len 3) (byte-compile-two-args form))
|
||
(t (byte-compile-subr-wrong-args form "1-2")))))
|
||
|
||
(defun byte-compile-two-or-three-args (form)
|
||
(let ((len (length form)))
|
||
(cond ((= len 3) (byte-compile-three-args (append form '(nil))))
|
||
((= len 4) (byte-compile-three-args form))
|
||
(t (byte-compile-subr-wrong-args form "2-3")))))
|
||
|
||
(defun byte-compile-noop (form)
|
||
(byte-compile-constant nil))
|
||
|
||
(defun byte-compile-discard ()
|
||
(byte-compile-out 'byte-discard 0))
|
||
|
||
|
||
;; Compile a function that accepts one or more args and is right-associative.
|
||
;; We do it by left-associativity so that the operations
|
||
;; are done in the same order as in interpreted code.
|
||
;; We treat the one-arg case, as in (+ x), like (+ x 0).
|
||
;; in order to convert markers to numbers, and trigger expected errors.
|
||
(defun byte-compile-associative (form)
|
||
(if (cdr form)
|
||
(let ((opcode (get (car form) 'byte-opcode))
|
||
(args (copy-sequence (cdr form))))
|
||
(byte-compile-form (car args))
|
||
(setq args (cdr args))
|
||
(or args (setq args '(0)
|
||
opcode (get '+ 'byte-opcode)))
|
||
(while args
|
||
(byte-compile-form (car args))
|
||
(byte-compile-out opcode 0)
|
||
(setq args (cdr args))))
|
||
(byte-compile-constant (eval form))))
|
||
|
||
|
||
;; more complicated compiler macros
|
||
|
||
(byte-defop-compiler list)
|
||
(byte-defop-compiler concat)
|
||
(byte-defop-compiler fset)
|
||
(byte-defop-compiler (indent-to-column byte-indent-to) byte-compile-indent-to)
|
||
(byte-defop-compiler indent-to)
|
||
(byte-defop-compiler insert)
|
||
(byte-defop-compiler-1 function byte-compile-function-form)
|
||
(byte-defop-compiler-1 - byte-compile-minus)
|
||
(byte-defop-compiler19 (/ byte-quo) byte-compile-quo)
|
||
(byte-defop-compiler19 nconc)
|
||
(byte-defop-compiler-1 beginning-of-line)
|
||
|
||
(defun byte-compile-list (form)
|
||
(let ((count (length (cdr form))))
|
||
(cond ((= count 0)
|
||
(byte-compile-constant nil))
|
||
((< count 5)
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(byte-compile-out
|
||
(aref [byte-list1 byte-list2 byte-list3 byte-list4] (1- count)) 0))
|
||
((and (< count 256) (not (byte-compile-version-cond
|
||
byte-compile-compatibility)))
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(byte-compile-out 'byte-listN count))
|
||
(t (byte-compile-normal-call form)))))
|
||
|
||
(defun byte-compile-concat (form)
|
||
(let ((count (length (cdr form))))
|
||
(cond ((and (< 1 count) (< count 5))
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(byte-compile-out
|
||
(aref [byte-concat2 byte-concat3 byte-concat4] (- count 2))
|
||
0))
|
||
;; Concat of one arg is not a no-op if arg is not a string.
|
||
((= count 0)
|
||
(byte-compile-form ""))
|
||
((and (< count 256) (not (byte-compile-version-cond
|
||
byte-compile-compatibility)))
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(byte-compile-out 'byte-concatN count))
|
||
((byte-compile-normal-call form)))))
|
||
|
||
(defun byte-compile-minus (form)
|
||
(if (null (setq form (cdr form)))
|
||
(byte-compile-constant 0)
|
||
(byte-compile-form (car form))
|
||
(if (cdr form)
|
||
(while (setq form (cdr form))
|
||
(byte-compile-form (car form))
|
||
(byte-compile-out 'byte-diff 0))
|
||
(byte-compile-out 'byte-negate 0))))
|
||
|
||
(defun byte-compile-quo (form)
|
||
(let ((len (length form)))
|
||
(cond ((<= len 2)
|
||
(byte-compile-subr-wrong-args form "2 or more"))
|
||
(t
|
||
(byte-compile-form (car (setq form (cdr form))))
|
||
(while (setq form (cdr form))
|
||
(byte-compile-form (car form))
|
||
(byte-compile-out 'byte-quo 0))))))
|
||
|
||
(defun byte-compile-nconc (form)
|
||
(let ((len (length form)))
|
||
(cond ((= len 1)
|
||
(byte-compile-constant nil))
|
||
((= len 2)
|
||
;; nconc of one arg is a noop, even if that arg isn't a list.
|
||
(byte-compile-form (nth 1 form)))
|
||
(t
|
||
(byte-compile-form (car (setq form (cdr form))))
|
||
(while (setq form (cdr form))
|
||
(byte-compile-form (car form))
|
||
(byte-compile-out 'byte-nconc 0))))))
|
||
|
||
(defun byte-compile-fset (form)
|
||
;; warn about forms like (fset 'foo '(lambda () ...))
|
||
;; (where the lambda expression is non-trivial...)
|
||
(let ((fn (nth 2 form))
|
||
body)
|
||
(if (and (eq (car-safe fn) 'quote)
|
||
(eq (car-safe (setq fn (nth 1 fn))) 'lambda))
|
||
(progn
|
||
(setq body (cdr (cdr fn)))
|
||
(if (stringp (car body)) (setq body (cdr body)))
|
||
(if (eq 'interactive (car-safe (car body))) (setq body (cdr body)))
|
||
(if (and (consp (car body))
|
||
(not (eq 'byte-code (car (car body)))))
|
||
(byte-compile-warn
|
||
"A quoted lambda form is the second argument of fset. This is probably
|
||
not what you want, as that lambda cannot be compiled. Consider using
|
||
the syntax (function (lambda (...) ...)) instead.")))))
|
||
(byte-compile-two-args form))
|
||
|
||
(defun byte-compile-funarg (form)
|
||
;; (mapcar '(lambda (x) ..) ..) ==> (mapcar (function (lambda (x) ..)) ..)
|
||
;; for cases where it's guaranteed that first arg will be used as a lambda.
|
||
(byte-compile-normal-call
|
||
(let ((fn (nth 1 form)))
|
||
(if (and (eq (car-safe fn) 'quote)
|
||
(eq (car-safe (nth 1 fn)) 'lambda))
|
||
(cons (car form)
|
||
(cons (cons 'function (cdr fn))
|
||
(cdr (cdr form))))
|
||
form))))
|
||
|
||
(defun byte-compile-funarg-2 (form)
|
||
;; (sort ... '(lambda (x) ..)) ==> (sort ... (function (lambda (x) ..)))
|
||
;; for cases where it's guaranteed that second arg will be used as a lambda.
|
||
(byte-compile-normal-call
|
||
(let ((fn (nth 2 form)))
|
||
(if (and (eq (car-safe fn) 'quote)
|
||
(eq (car-safe (nth 1 fn)) 'lambda))
|
||
(cons (car form)
|
||
(cons (nth 1 form)
|
||
(cons (cons 'function (cdr fn))
|
||
(cdr (cdr (cdr form))))))
|
||
form))))
|
||
|
||
;; (function foo) must compile like 'foo, not like (symbol-function 'foo).
|
||
;; Otherwise it will be incompatible with the interpreter,
|
||
;; and (funcall (function foo)) will lose with autoloads.
|
||
|
||
(defun byte-compile-function-form (form)
|
||
(byte-compile-constant
|
||
(cond ((symbolp (nth 1 form))
|
||
(nth 1 form))
|
||
;; If we're not allowed to use #[] syntax, then output a form like
|
||
;; '(lambda (..) (byte-code ..)) instead of a call to make-byte-code.
|
||
;; In this situation, calling make-byte-code at run-time will usually
|
||
;; be less efficient than processing a call to byte-code.
|
||
((byte-compile-version-cond byte-compile-compatibility)
|
||
(byte-compile-byte-code-unmake (byte-compile-lambda (nth 1 form))))
|
||
((byte-compile-lambda (nth 1 form))))))
|
||
|
||
(defun byte-compile-indent-to (form)
|
||
(let ((len (length form)))
|
||
(cond ((= len 2)
|
||
(byte-compile-form (car (cdr form)))
|
||
(byte-compile-out 'byte-indent-to 0))
|
||
((= len 3)
|
||
;; no opcode for 2-arg case.
|
||
(byte-compile-normal-call form))
|
||
(t
|
||
(byte-compile-subr-wrong-args form "1-2")))))
|
||
|
||
(defun byte-compile-insert (form)
|
||
(cond ((null (cdr form))
|
||
(byte-compile-constant nil))
|
||
((and (not (byte-compile-version-cond
|
||
byte-compile-compatibility))
|
||
(<= (length form) 256))
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(if (cdr (cdr form))
|
||
(byte-compile-out 'byte-insertN (length (cdr form)))
|
||
(byte-compile-out 'byte-insert 0)))
|
||
((memq t (mapcar 'consp (cdr (cdr form))))
|
||
(byte-compile-normal-call form))
|
||
;; We can split it; there is no function call after inserting 1st arg.
|
||
(t
|
||
(while (setq form (cdr form))
|
||
(byte-compile-form (car form))
|
||
(byte-compile-out 'byte-insert 0)
|
||
(if (cdr form)
|
||
(byte-compile-discard))))))
|
||
|
||
(defun byte-compile-beginning-of-line (form)
|
||
(if (not (byte-compile-constp (nth 1 form)))
|
||
(byte-compile-normal-call form)
|
||
(byte-compile-form
|
||
(list 'forward-line
|
||
(if (integerp (setq form (or (eval (nth 1 form)) 1)))
|
||
(1- form)
|
||
(byte-compile-warn "Non-numeric arg to beginning-of-line: %s"
|
||
form)
|
||
(list '1- (list 'quote form))))
|
||
t)
|
||
(byte-compile-constant nil)))
|
||
|
||
|
||
(byte-defop-compiler-1 setq)
|
||
(byte-defop-compiler-1 setq-default)
|
||
(byte-defop-compiler-1 quote)
|
||
(byte-defop-compiler-1 quote-form)
|
||
|
||
(defun byte-compile-setq (form)
|
||
(let ((args (cdr form)))
|
||
(if args
|
||
(while args
|
||
(byte-compile-form (car (cdr args)))
|
||
(or for-effect (cdr (cdr args))
|
||
(byte-compile-out 'byte-dup 0))
|
||
(byte-compile-variable-ref 'byte-varset (car args))
|
||
(setq args (cdr (cdr args))))
|
||
;; (setq), with no arguments.
|
||
(byte-compile-form nil for-effect))
|
||
(setq for-effect nil)))
|
||
|
||
(defun byte-compile-setq-default (form)
|
||
(let ((args (cdr form))
|
||
setters)
|
||
(while args
|
||
(setq setters
|
||
(cons (list 'set-default (list 'quote (car args)) (car (cdr args)))
|
||
setters))
|
||
(setq args (cdr (cdr args))))
|
||
(byte-compile-form (cons 'progn (nreverse setters)))))
|
||
|
||
(defun byte-compile-quote (form)
|
||
(byte-compile-constant (car (cdr form))))
|
||
|
||
(defun byte-compile-quote-form (form)
|
||
(byte-compile-constant (byte-compile-top-level (nth 1 form))))
|
||
|
||
|
||
;;; control structures
|
||
|
||
(defun byte-compile-body (body &optional for-effect)
|
||
(while (cdr body)
|
||
(byte-compile-form (car body) t)
|
||
(setq body (cdr body)))
|
||
(byte-compile-form (car body) for-effect))
|
||
|
||
(defsubst byte-compile-body-do-effect (body)
|
||
(byte-compile-body body for-effect)
|
||
(setq for-effect nil))
|
||
|
||
(defsubst byte-compile-form-do-effect (form)
|
||
(byte-compile-form form for-effect)
|
||
(setq for-effect nil))
|
||
|
||
(byte-defop-compiler-1 inline byte-compile-progn)
|
||
(byte-defop-compiler-1 progn)
|
||
(byte-defop-compiler-1 prog1)
|
||
(byte-defop-compiler-1 prog2)
|
||
(byte-defop-compiler-1 if)
|
||
(byte-defop-compiler-1 cond)
|
||
(byte-defop-compiler-1 and)
|
||
(byte-defop-compiler-1 or)
|
||
(byte-defop-compiler-1 while)
|
||
(byte-defop-compiler-1 funcall)
|
||
(byte-defop-compiler-1 apply byte-compile-funarg)
|
||
(byte-defop-compiler-1 mapcar byte-compile-funarg)
|
||
(byte-defop-compiler-1 mapatoms byte-compile-funarg)
|
||
(byte-defop-compiler-1 mapconcat byte-compile-funarg)
|
||
(byte-defop-compiler-1 sort byte-compile-funarg-2)
|
||
(byte-defop-compiler-1 let)
|
||
(byte-defop-compiler-1 let*)
|
||
|
||
(defun byte-compile-progn (form)
|
||
(byte-compile-body-do-effect (cdr form)))
|
||
|
||
(defun byte-compile-prog1 (form)
|
||
(byte-compile-form-do-effect (car (cdr form)))
|
||
(byte-compile-body (cdr (cdr form)) t))
|
||
|
||
(defun byte-compile-prog2 (form)
|
||
(byte-compile-form (nth 1 form) t)
|
||
(byte-compile-form-do-effect (nth 2 form))
|
||
(byte-compile-body (cdr (cdr (cdr form))) t))
|
||
|
||
(defmacro byte-compile-goto-if (cond discard tag)
|
||
`(byte-compile-goto
|
||
(if ,cond
|
||
(if ,discard 'byte-goto-if-not-nil 'byte-goto-if-not-nil-else-pop)
|
||
(if ,discard 'byte-goto-if-nil 'byte-goto-if-nil-else-pop))
|
||
,tag))
|
||
|
||
(defun byte-compile-if (form)
|
||
(byte-compile-form (car (cdr form)))
|
||
(if (null (nthcdr 3 form))
|
||
;; No else-forms
|
||
(let ((donetag (byte-compile-make-tag)))
|
||
(byte-compile-goto-if nil for-effect donetag)
|
||
(byte-compile-form (nth 2 form) for-effect)
|
||
(byte-compile-out-tag donetag))
|
||
(let ((donetag (byte-compile-make-tag)) (elsetag (byte-compile-make-tag)))
|
||
(byte-compile-goto 'byte-goto-if-nil elsetag)
|
||
(byte-compile-form (nth 2 form) for-effect)
|
||
(byte-compile-goto 'byte-goto donetag)
|
||
(byte-compile-out-tag elsetag)
|
||
(byte-compile-body (cdr (cdr (cdr form))) for-effect)
|
||
(byte-compile-out-tag donetag)))
|
||
(setq for-effect nil))
|
||
|
||
(defun byte-compile-cond (clauses)
|
||
(let ((donetag (byte-compile-make-tag))
|
||
nexttag clause)
|
||
(while (setq clauses (cdr clauses))
|
||
(setq clause (car clauses))
|
||
(cond ((or (eq (car clause) t)
|
||
(and (eq (car-safe (car clause)) 'quote)
|
||
(car-safe (cdr-safe (car clause)))))
|
||
;; Unconditional clause
|
||
(setq clause (cons t clause)
|
||
clauses nil))
|
||
((cdr clauses)
|
||
(byte-compile-form (car clause))
|
||
(if (null (cdr clause))
|
||
;; First clause is a singleton.
|
||
(byte-compile-goto-if t for-effect donetag)
|
||
(setq nexttag (byte-compile-make-tag))
|
||
(byte-compile-goto 'byte-goto-if-nil nexttag)
|
||
(byte-compile-body (cdr clause) for-effect)
|
||
(byte-compile-goto 'byte-goto donetag)
|
||
(byte-compile-out-tag nexttag)))))
|
||
;; Last clause
|
||
(and (cdr clause) (not (eq (car clause) t))
|
||
(progn (byte-compile-form (car clause))
|
||
(byte-compile-goto-if nil for-effect donetag)
|
||
(setq clause (cdr clause))))
|
||
(byte-compile-body-do-effect clause)
|
||
(byte-compile-out-tag donetag)))
|
||
|
||
(defun byte-compile-and (form)
|
||
(let ((failtag (byte-compile-make-tag))
|
||
(args (cdr form)))
|
||
(if (null args)
|
||
(byte-compile-form-do-effect t)
|
||
(while (cdr args)
|
||
(byte-compile-form (car args))
|
||
(byte-compile-goto-if nil for-effect failtag)
|
||
(setq args (cdr args)))
|
||
(byte-compile-form-do-effect (car args))
|
||
(byte-compile-out-tag failtag))))
|
||
|
||
(defun byte-compile-or (form)
|
||
(let ((wintag (byte-compile-make-tag))
|
||
(args (cdr form)))
|
||
(if (null args)
|
||
(byte-compile-form-do-effect nil)
|
||
(while (cdr args)
|
||
(byte-compile-form (car args))
|
||
(byte-compile-goto-if t for-effect wintag)
|
||
(setq args (cdr args)))
|
||
(byte-compile-form-do-effect (car args))
|
||
(byte-compile-out-tag wintag))))
|
||
|
||
(defun byte-compile-while (form)
|
||
(let ((endtag (byte-compile-make-tag))
|
||
(looptag (byte-compile-make-tag)))
|
||
(byte-compile-out-tag looptag)
|
||
(byte-compile-form (car (cdr form)))
|
||
(byte-compile-goto-if nil for-effect endtag)
|
||
(byte-compile-body (cdr (cdr form)) t)
|
||
(byte-compile-goto 'byte-goto looptag)
|
||
(byte-compile-out-tag endtag)
|
||
(setq for-effect nil)))
|
||
|
||
(defun byte-compile-funcall (form)
|
||
(mapcar 'byte-compile-form (cdr form))
|
||
(byte-compile-out 'byte-call (length (cdr (cdr form)))))
|
||
|
||
|
||
(defun byte-compile-let (form)
|
||
;; First compute the binding values in the old scope.
|
||
(let ((varlist (car (cdr form))))
|
||
(while varlist
|
||
(if (consp (car varlist))
|
||
(byte-compile-form (car (cdr (car varlist))))
|
||
(byte-compile-push-constant nil))
|
||
(setq varlist (cdr varlist))))
|
||
(let ((byte-compile-bound-variables byte-compile-bound-variables) ;new scope
|
||
(varlist (reverse (car (cdr form)))))
|
||
(while varlist
|
||
(byte-compile-variable-ref 'byte-varbind (if (consp (car varlist))
|
||
(car (car varlist))
|
||
(car varlist)))
|
||
(setq varlist (cdr varlist)))
|
||
(byte-compile-body-do-effect (cdr (cdr form)))
|
||
(byte-compile-out 'byte-unbind (length (car (cdr form))))))
|
||
|
||
(defun byte-compile-let* (form)
|
||
(let ((byte-compile-bound-variables byte-compile-bound-variables) ;new scope
|
||
(varlist (copy-sequence (car (cdr form)))))
|
||
(while varlist
|
||
(if (atom (car varlist))
|
||
(byte-compile-push-constant nil)
|
||
(byte-compile-form (car (cdr (car varlist))))
|
||
(setcar varlist (car (car varlist))))
|
||
(byte-compile-variable-ref 'byte-varbind (car varlist))
|
||
(setq varlist (cdr varlist)))
|
||
(byte-compile-body-do-effect (cdr (cdr form)))
|
||
(byte-compile-out 'byte-unbind (length (car (cdr form))))))
|
||
|
||
|
||
(byte-defop-compiler-1 /= byte-compile-negated)
|
||
(byte-defop-compiler-1 atom byte-compile-negated)
|
||
(byte-defop-compiler-1 nlistp byte-compile-negated)
|
||
|
||
(put '/= 'byte-compile-negated-op '=)
|
||
(put 'atom 'byte-compile-negated-op 'consp)
|
||
(put 'nlistp 'byte-compile-negated-op 'listp)
|
||
|
||
(defun byte-compile-negated (form)
|
||
(byte-compile-form-do-effect (byte-compile-negation-optimizer form)))
|
||
|
||
;; Even when optimization is off, /= is optimized to (not (= ...)).
|
||
(defun byte-compile-negation-optimizer (form)
|
||
;; an optimizer for forms where <form1> is less efficient than (not <form2>)
|
||
(list 'not
|
||
(cons (or (get (car form) 'byte-compile-negated-op)
|
||
(error
|
||
"Compiler error: `%s' has no `byte-compile-negated-op' property"
|
||
(car form)))
|
||
(cdr form))))
|
||
|
||
;;; other tricky macro-like special-forms
|
||
|
||
(byte-defop-compiler-1 catch)
|
||
(byte-defop-compiler-1 unwind-protect)
|
||
(byte-defop-compiler-1 condition-case)
|
||
(byte-defop-compiler-1 save-excursion)
|
||
(byte-defop-compiler-1 save-current-buffer)
|
||
(byte-defop-compiler-1 save-restriction)
|
||
(byte-defop-compiler-1 save-window-excursion)
|
||
(byte-defop-compiler-1 with-output-to-temp-buffer)
|
||
(byte-defop-compiler-1 track-mouse)
|
||
|
||
(defun byte-compile-catch (form)
|
||
(byte-compile-form (car (cdr form)))
|
||
(byte-compile-push-constant
|
||
(byte-compile-top-level (cons 'progn (cdr (cdr form))) for-effect))
|
||
(byte-compile-out 'byte-catch 0))
|
||
|
||
(defun byte-compile-unwind-protect (form)
|
||
(byte-compile-push-constant
|
||
(byte-compile-top-level-body (cdr (cdr form)) t))
|
||
(byte-compile-out 'byte-unwind-protect 0)
|
||
(byte-compile-form-do-effect (car (cdr form)))
|
||
(byte-compile-out 'byte-unbind 1))
|
||
|
||
(defun byte-compile-track-mouse (form)
|
||
(byte-compile-form
|
||
(list
|
||
'funcall
|
||
(list 'quote
|
||
(list 'lambda nil
|
||
(cons 'track-mouse
|
||
(byte-compile-top-level-body (cdr form))))))))
|
||
|
||
(defun byte-compile-condition-case (form)
|
||
(let* ((var (nth 1 form))
|
||
(byte-compile-bound-variables
|
||
(if var (cons var byte-compile-bound-variables)
|
||
byte-compile-bound-variables)))
|
||
(or (symbolp var)
|
||
(byte-compile-warn
|
||
"%s is not a variable-name or nil (in condition-case)" var))
|
||
(byte-compile-push-constant var)
|
||
(byte-compile-push-constant (byte-compile-top-level
|
||
(nth 2 form) for-effect))
|
||
(let ((clauses (cdr (cdr (cdr form))))
|
||
compiled-clauses)
|
||
(while clauses
|
||
(let* ((clause (car clauses))
|
||
(condition (car clause)))
|
||
(cond ((not (or (symbolp condition)
|
||
(and (listp condition)
|
||
(let ((syms condition) (ok t))
|
||
(while syms
|
||
(if (not (symbolp (car syms)))
|
||
(setq ok nil))
|
||
(setq syms (cdr syms)))
|
||
ok))))
|
||
(byte-compile-warn
|
||
"%s is not a condition name or list of such (in condition-case)"
|
||
(prin1-to-string condition)))
|
||
;; ((not (or (eq condition 't)
|
||
;; (and (stringp (get condition 'error-message))
|
||
;; (consp (get condition 'error-conditions)))))
|
||
;; (byte-compile-warn
|
||
;; "%s is not a known condition name (in condition-case)"
|
||
;; condition))
|
||
)
|
||
(setq compiled-clauses
|
||
(cons (cons condition
|
||
(byte-compile-top-level-body
|
||
(cdr clause) for-effect))
|
||
compiled-clauses)))
|
||
(setq clauses (cdr clauses)))
|
||
(byte-compile-push-constant (nreverse compiled-clauses)))
|
||
(byte-compile-out 'byte-condition-case 0)))
|
||
|
||
|
||
(defun byte-compile-save-excursion (form)
|
||
(byte-compile-out 'byte-save-excursion 0)
|
||
(byte-compile-body-do-effect (cdr form))
|
||
(byte-compile-out 'byte-unbind 1))
|
||
|
||
(defun byte-compile-save-restriction (form)
|
||
(byte-compile-out 'byte-save-restriction 0)
|
||
(byte-compile-body-do-effect (cdr form))
|
||
(byte-compile-out 'byte-unbind 1))
|
||
|
||
(defun byte-compile-save-current-buffer (form)
|
||
(byte-compile-out 'byte-save-current-buffer 0)
|
||
(byte-compile-body-do-effect (cdr form))
|
||
(byte-compile-out 'byte-unbind 1))
|
||
|
||
(defun byte-compile-save-window-excursion (form)
|
||
(byte-compile-push-constant
|
||
(byte-compile-top-level-body (cdr form) for-effect))
|
||
(byte-compile-out 'byte-save-window-excursion 0))
|
||
|
||
(defun byte-compile-with-output-to-temp-buffer (form)
|
||
(byte-compile-form (car (cdr form)))
|
||
(byte-compile-out 'byte-temp-output-buffer-setup 0)
|
||
(byte-compile-body (cdr (cdr form)))
|
||
(byte-compile-out 'byte-temp-output-buffer-show 0))
|
||
|
||
|
||
;;; top-level forms elsewhere
|
||
|
||
(byte-defop-compiler-1 defun)
|
||
(byte-defop-compiler-1 defmacro)
|
||
(byte-defop-compiler-1 defvar)
|
||
(byte-defop-compiler-1 defconst byte-compile-defvar)
|
||
(byte-defop-compiler-1 autoload)
|
||
(byte-defop-compiler-1 lambda byte-compile-lambda-form)
|
||
(byte-defop-compiler-1 defalias)
|
||
|
||
(defun byte-compile-defun (form)
|
||
;; This is not used for file-level defuns with doc strings.
|
||
(byte-compile-two-args ; Use this to avoid byte-compile-fset's warning.
|
||
(list 'fset (list 'quote (nth 1 form))
|
||
(byte-compile-byte-code-maker
|
||
(byte-compile-lambda (cons 'lambda (cdr (cdr form)))))))
|
||
(byte-compile-discard)
|
||
(byte-compile-constant (nth 1 form)))
|
||
|
||
(defun byte-compile-defmacro (form)
|
||
;; This is not used for file-level defmacros with doc strings.
|
||
(byte-compile-body-do-effect
|
||
(list (list 'fset (list 'quote (nth 1 form))
|
||
(let ((code (byte-compile-byte-code-maker
|
||
(byte-compile-lambda
|
||
(cons 'lambda (cdr (cdr form)))))))
|
||
(if (eq (car-safe code) 'make-byte-code)
|
||
(list 'cons ''macro code)
|
||
(list 'quote (cons 'macro (eval code))))))
|
||
(list 'quote (nth 1 form)))))
|
||
|
||
(defun byte-compile-defvar (form)
|
||
;; This is not used for file-level defvar/consts with doc strings.
|
||
(let ((var (nth 1 form))
|
||
(value (nth 2 form))
|
||
(string (nth 3 form)))
|
||
(if (memq 'free-vars byte-compile-warnings)
|
||
(setq byte-compile-bound-variables
|
||
(cons var byte-compile-bound-variables)))
|
||
(byte-compile-body-do-effect
|
||
(list (if (cdr (cdr form))
|
||
(if (eq (car form) 'defconst)
|
||
(list 'setq var value)
|
||
(list 'or (list 'boundp (list 'quote var))
|
||
(list 'setq var value))))
|
||
;; Put the defined variable in this library's load-history entry
|
||
;; just as a real defvar would.
|
||
(list 'setq 'current-load-list
|
||
(list 'cons (list 'quote var)
|
||
'current-load-list))
|
||
(if string
|
||
(list 'put (list 'quote var) ''variable-documentation string))
|
||
(list 'quote var)))))
|
||
|
||
(defun byte-compile-autoload (form)
|
||
(and (byte-compile-constp (nth 1 form))
|
||
(byte-compile-constp (nth 5 form))
|
||
(eval (nth 5 form)) ; macro-p
|
||
(not (fboundp (eval (nth 1 form))))
|
||
(byte-compile-warn
|
||
"The compiler ignores `autoload' except at top level. You should
|
||
probably put the autoload of the macro `%s' at top-level."
|
||
(eval (nth 1 form))))
|
||
(byte-compile-normal-call form))
|
||
|
||
;; Lambdas in valid places are handled as special cases by various code.
|
||
;; The ones that remain are errors.
|
||
(defun byte-compile-lambda-form (form)
|
||
(error "`lambda' used as function name is invalid"))
|
||
|
||
;; Compile normally, but deal with warnings for the function being defined.
|
||
(defun byte-compile-defalias (form)
|
||
(if (and (consp (cdr form)) (consp (nth 1 form))
|
||
(eq (car (nth 1 form)) 'quote)
|
||
(consp (cdr (nth 1 form)))
|
||
(symbolp (nth 1 (nth 1 form)))
|
||
(consp (nthcdr 2 form))
|
||
(consp (nth 2 form))
|
||
(eq (car (nth 2 form)) 'quote)
|
||
(consp (cdr (nth 2 form)))
|
||
(symbolp (nth 1 (nth 2 form))))
|
||
(progn
|
||
(byte-compile-defalias-warn (nth 1 (nth 1 form))
|
||
(nth 1 (nth 2 form)))
|
||
(setq byte-compile-function-environment
|
||
(cons (cons (nth 1 (nth 1 form))
|
||
(nth 1 (nth 2 form)))
|
||
byte-compile-function-environment))))
|
||
(byte-compile-normal-call form))
|
||
|
||
;; Turn off warnings about prior calls to the function being defalias'd.
|
||
;; This could be smarter and compare those calls with
|
||
;; the function it is being aliased to.
|
||
(defun byte-compile-defalias-warn (new alias)
|
||
(let ((calls (assq new byte-compile-unresolved-functions)))
|
||
(if calls
|
||
(setq byte-compile-unresolved-functions
|
||
(delq calls byte-compile-unresolved-functions)))))
|
||
|
||
;;; tags
|
||
|
||
;; Note: Most operations will strip off the 'TAG, but it speeds up
|
||
;; optimization to have the 'TAG as a part of the tag.
|
||
;; Tags will be (TAG . (tag-number . stack-depth)).
|
||
(defun byte-compile-make-tag ()
|
||
(list 'TAG (setq byte-compile-tag-number (1+ byte-compile-tag-number))))
|
||
|
||
|
||
(defun byte-compile-out-tag (tag)
|
||
(setq byte-compile-output (cons tag byte-compile-output))
|
||
(if (cdr (cdr tag))
|
||
(progn
|
||
;; ## remove this someday
|
||
(and byte-compile-depth
|
||
(not (= (cdr (cdr tag)) byte-compile-depth))
|
||
(error "Compiler bug: depth conflict at tag %d" (car (cdr tag))))
|
||
(setq byte-compile-depth (cdr (cdr tag))))
|
||
(setcdr (cdr tag) byte-compile-depth)))
|
||
|
||
(defun byte-compile-goto (opcode tag)
|
||
(setq byte-compile-output (cons (cons opcode tag) byte-compile-output))
|
||
(setcdr (cdr tag) (if (memq opcode byte-goto-always-pop-ops)
|
||
(1- byte-compile-depth)
|
||
byte-compile-depth))
|
||
(setq byte-compile-depth (and (not (eq opcode 'byte-goto))
|
||
(1- byte-compile-depth))))
|
||
|
||
(defun byte-compile-out (opcode offset)
|
||
(setq byte-compile-output (cons (cons opcode offset) byte-compile-output))
|
||
(cond ((eq opcode 'byte-call)
|
||
(setq byte-compile-depth (- byte-compile-depth offset)))
|
||
((eq opcode 'byte-return)
|
||
;; This is actually an unnecessary case, because there should be
|
||
;; no more opcodes behind byte-return.
|
||
(setq byte-compile-depth nil))
|
||
(t
|
||
(setq byte-compile-depth (+ byte-compile-depth
|
||
(or (aref byte-stack+-info
|
||
(symbol-value opcode))
|
||
(- (1- offset))))
|
||
byte-compile-maxdepth (max byte-compile-depth
|
||
byte-compile-maxdepth))))
|
||
;;(if (< byte-compile-depth 0) (error "Compiler error: stack underflow"))
|
||
)
|
||
|
||
|
||
;;; call tree stuff
|
||
|
||
(defun byte-compile-annotate-call-tree (form)
|
||
(let (entry)
|
||
;; annotate the current call
|
||
(if (setq entry (assq (car form) byte-compile-call-tree))
|
||
(or (memq byte-compile-current-form (nth 1 entry)) ;callers
|
||
(setcar (cdr entry)
|
||
(cons byte-compile-current-form (nth 1 entry))))
|
||
(setq byte-compile-call-tree
|
||
(cons (list (car form) (list byte-compile-current-form) nil)
|
||
byte-compile-call-tree)))
|
||
;; annotate the current function
|
||
(if (setq entry (assq byte-compile-current-form byte-compile-call-tree))
|
||
(or (memq (car form) (nth 2 entry)) ;called
|
||
(setcar (cdr (cdr entry))
|
||
(cons (car form) (nth 2 entry))))
|
||
(setq byte-compile-call-tree
|
||
(cons (list byte-compile-current-form nil (list (car form)))
|
||
byte-compile-call-tree)))
|
||
))
|
||
|
||
;; Renamed from byte-compile-report-call-tree
|
||
;; to avoid interfering with completion of byte-compile-file.
|
||
;;;###autoload
|
||
(defun display-call-tree (&optional filename)
|
||
"Display a call graph of a specified file.
|
||
This lists which functions have been called, what functions called
|
||
them, and what functions they call. The list includes all functions
|
||
whose definitions have been compiled in this Emacs session, as well as
|
||
all functions called by those functions.
|
||
|
||
The call graph does not include macros, inline functions, or
|
||
primitives that the byte-code interpreter knows about directly \(eq,
|
||
cons, etc.\).
|
||
|
||
The call tree also lists those functions which are not known to be called
|
||
\(that is, to which no calls have been compiled\), and which cannot be
|
||
invoked interactively."
|
||
(interactive)
|
||
(message "Generating call tree...")
|
||
(with-output-to-temp-buffer "*Call-Tree*"
|
||
(set-buffer "*Call-Tree*")
|
||
(erase-buffer)
|
||
(message "Generating call tree... (sorting on %s)"
|
||
byte-compile-call-tree-sort)
|
||
(insert "Call tree for "
|
||
(cond ((null byte-compile-current-file) (or filename "???"))
|
||
((stringp byte-compile-current-file)
|
||
byte-compile-current-file)
|
||
(t (buffer-name byte-compile-current-file)))
|
||
" sorted on "
|
||
(prin1-to-string byte-compile-call-tree-sort)
|
||
":\n\n")
|
||
(if byte-compile-call-tree-sort
|
||
(setq byte-compile-call-tree
|
||
(sort byte-compile-call-tree
|
||
(cond ((eq byte-compile-call-tree-sort 'callers)
|
||
(function (lambda (x y) (< (length (nth 1 x))
|
||
(length (nth 1 y))))))
|
||
((eq byte-compile-call-tree-sort 'calls)
|
||
(function (lambda (x y) (< (length (nth 2 x))
|
||
(length (nth 2 y))))))
|
||
((eq byte-compile-call-tree-sort 'calls+callers)
|
||
(function (lambda (x y) (< (+ (length (nth 1 x))
|
||
(length (nth 2 x)))
|
||
(+ (length (nth 1 y))
|
||
(length (nth 2 y)))))))
|
||
((eq byte-compile-call-tree-sort 'name)
|
||
(function (lambda (x y) (string< (car x)
|
||
(car y)))))
|
||
(t (error "`byte-compile-call-tree-sort': `%s' - unknown sort mode"
|
||
byte-compile-call-tree-sort))))))
|
||
(message "Generating call tree...")
|
||
(let ((rest byte-compile-call-tree)
|
||
(b (current-buffer))
|
||
f p
|
||
callers calls)
|
||
(while rest
|
||
(prin1 (car (car rest)) b)
|
||
(setq callers (nth 1 (car rest))
|
||
calls (nth 2 (car rest)))
|
||
(insert "\t"
|
||
(cond ((not (fboundp (setq f (car (car rest)))))
|
||
(if (null f)
|
||
" <top level>";; shouldn't insert nil then, actually -sk
|
||
" <not defined>"))
|
||
((subrp (setq f (symbol-function f)))
|
||
" <subr>")
|
||
((symbolp f)
|
||
(format " ==> %s" f))
|
||
((byte-code-function-p f)
|
||
"<compiled function>")
|
||
((not (consp f))
|
||
"<malformed function>")
|
||
((eq 'macro (car f))
|
||
(if (or (byte-code-function-p (cdr f))
|
||
(assq 'byte-code (cdr (cdr (cdr f)))))
|
||
" <compiled macro>"
|
||
" <macro>"))
|
||
((assq 'byte-code (cdr (cdr f)))
|
||
"<compiled lambda>")
|
||
((eq 'lambda (car f))
|
||
"<function>")
|
||
(t "???"))
|
||
(format " (%d callers + %d calls = %d)"
|
||
;; Does the optimizer eliminate common subexpressions?-sk
|
||
(length callers)
|
||
(length calls)
|
||
(+ (length callers) (length calls)))
|
||
"\n")
|
||
(if callers
|
||
(progn
|
||
(insert " called by:\n")
|
||
(setq p (point))
|
||
(insert " " (if (car callers)
|
||
(mapconcat 'symbol-name callers ", ")
|
||
"<top level>"))
|
||
(let ((fill-prefix " "))
|
||
(fill-region-as-paragraph p (point)))))
|
||
(if calls
|
||
(progn
|
||
(insert " calls:\n")
|
||
(setq p (point))
|
||
(insert " " (mapconcat 'symbol-name calls ", "))
|
||
(let ((fill-prefix " "))
|
||
(fill-region-as-paragraph p (point)))))
|
||
(insert "\n")
|
||
(setq rest (cdr rest)))
|
||
|
||
(message "Generating call tree...(finding uncalled functions...)")
|
||
(setq rest byte-compile-call-tree)
|
||
(let ((uncalled nil))
|
||
(while rest
|
||
(or (nth 1 (car rest))
|
||
(null (setq f (car (car rest))))
|
||
(byte-compile-fdefinition f t)
|
||
(commandp (byte-compile-fdefinition f nil))
|
||
(setq uncalled (cons f uncalled)))
|
||
(setq rest (cdr rest)))
|
||
(if uncalled
|
||
(let ((fill-prefix " "))
|
||
(insert "Noninteractive functions not known to be called:\n ")
|
||
(setq p (point))
|
||
(insert (mapconcat 'symbol-name (nreverse uncalled) ", "))
|
||
(fill-region-as-paragraph p (point)))))
|
||
)
|
||
(message "Generating call tree...done.")
|
||
))
|
||
|
||
|
||
;;; by crl@newton.purdue.edu
|
||
;;; Only works noninteractively.
|
||
;;;###autoload
|
||
(defun batch-byte-compile ()
|
||
"Run `byte-compile-file' on the files remaining on the command line.
|
||
Use this from the command line, with `-batch';
|
||
it won't work in an interactive Emacs.
|
||
Each file is processed even if an error occurred previously.
|
||
For example, invoke \"emacs -batch -f batch-byte-compile $emacs/ ~/*.el\""
|
||
;; command-line-args-left is what is left of the command line (from startup.el)
|
||
(defvar command-line-args-left) ;Avoid 'free variable' warning
|
||
(if (not noninteractive)
|
||
(error "`batch-byte-compile' is to be used only with -batch"))
|
||
(let ((error nil))
|
||
(while command-line-args-left
|
||
(if (file-directory-p (expand-file-name (car command-line-args-left)))
|
||
(let ((files (directory-files (car command-line-args-left)))
|
||
source dest)
|
||
(while files
|
||
(if (and (string-match emacs-lisp-file-regexp (car files))
|
||
(not (auto-save-file-name-p (car files)))
|
||
(setq source (expand-file-name (car files)
|
||
(car command-line-args-left)))
|
||
(setq dest (byte-compile-dest-file source))
|
||
(file-exists-p dest)
|
||
(file-newer-than-file-p source dest))
|
||
(if (null (batch-byte-compile-file source))
|
||
(setq error t)))
|
||
(setq files (cdr files))))
|
||
(if (null (batch-byte-compile-file (car command-line-args-left)))
|
||
(setq error t)))
|
||
(setq command-line-args-left (cdr command-line-args-left)))
|
||
(message "Done")
|
||
(kill-emacs (if error 1 0))))
|
||
|
||
(defun batch-byte-compile-file (file)
|
||
(condition-case err
|
||
(byte-compile-file file)
|
||
(error
|
||
(message (if (cdr err)
|
||
">>Error occurred processing %s: %s (%s)"
|
||
">>Error occurred processing %s: %s")
|
||
file
|
||
(get (car err) 'error-message)
|
||
(prin1-to-string (cdr err)))
|
||
nil)))
|
||
|
||
;;;###autoload
|
||
(defun batch-byte-recompile-directory ()
|
||
"Runs `byte-recompile-directory' on the dirs remaining on the command line.
|
||
Must be used only with `-batch', and kills Emacs on completion.
|
||
For example, invoke `emacs -batch -f batch-byte-recompile-directory .'."
|
||
;; command-line-args-left is what is left of the command line (startup.el)
|
||
(defvar command-line-args-left) ;Avoid 'free variable' warning
|
||
(if (not noninteractive)
|
||
(error "batch-byte-recompile-directory is to be used only with -batch"))
|
||
(or command-line-args-left
|
||
(setq command-line-args-left '(".")))
|
||
(while command-line-args-left
|
||
(byte-recompile-directory (car command-line-args-left))
|
||
(setq command-line-args-left (cdr command-line-args-left)))
|
||
(kill-emacs 0))
|
||
|
||
|
||
(make-obsolete 'dot 'point)
|
||
(make-obsolete 'dot-max 'point-max)
|
||
(make-obsolete 'dot-min 'point-min)
|
||
(make-obsolete 'dot-marker 'point-marker)
|
||
|
||
(make-obsolete 'buffer-flush-undo 'buffer-disable-undo)
|
||
(make-obsolete 'baud-rate "use the baud-rate variable instead")
|
||
(make-obsolete 'compiled-function-p 'byte-code-function-p)
|
||
(make-obsolete 'define-function 'defalias)
|
||
(make-obsolete-variable 'auto-fill-hook 'auto-fill-function)
|
||
(make-obsolete-variable 'blink-paren-hook 'blink-paren-function)
|
||
(make-obsolete-variable 'lisp-indent-hook 'lisp-indent-function)
|
||
(make-obsolete-variable 'inhibit-local-variables
|
||
"use enable-local-variables (with the reversed sense).")
|
||
(make-obsolete-variable 'unread-command-char
|
||
"use unread-command-events instead. That variable is a list of events to reread, so it now uses nil to mean `no event', instead of -1.")
|
||
(make-obsolete-variable 'unread-command-event
|
||
"use unread-command-events; which is a list of events rather than a single event.")
|
||
(make-obsolete-variable 'suspend-hooks 'suspend-hook)
|
||
(make-obsolete-variable 'comment-indent-hook 'comment-indent-function)
|
||
(make-obsolete-variable 'meta-flag "Use the set-input-mode function instead.")
|
||
(make-obsolete-variable 'executing-macro 'executing-kbd-macro)
|
||
(make-obsolete-variable 'before-change-function
|
||
"use before-change-functions; which is a list of functions rather than a single function.")
|
||
(make-obsolete-variable 'after-change-function
|
||
"use after-change-functions; which is a list of functions rather than a single function.")
|
||
(make-obsolete-variable 'font-lock-doc-string-face 'font-lock-string-face)
|
||
(make-obsolete-variable 'post-command-idle-hook
|
||
"use timers instead, with `run-with-idle-timer'.")
|
||
(make-obsolete-variable 'post-command-idle-delay
|
||
"use timers instead, with `run-with-idle-timer'.")
|
||
|
||
(provide 'byte-compile)
|
||
(provide 'bytecomp)
|
||
|
||
|
||
;;; report metering (see the hacks in bytecode.c)
|
||
|
||
(defun byte-compile-report-ops ()
|
||
(defvar byte-code-meter)
|
||
(with-output-to-temp-buffer "*Meter*"
|
||
(set-buffer "*Meter*")
|
||
(let ((i 0) n op off)
|
||
(while (< i 256)
|
||
(setq n (aref (aref byte-code-meter 0) i)
|
||
off nil)
|
||
(if t ;(not (zerop n))
|
||
(progn
|
||
(setq op i)
|
||
(setq off nil)
|
||
(cond ((< op byte-nth)
|
||
(setq off (logand op 7))
|
||
(setq op (logand op 248)))
|
||
((>= op byte-constant)
|
||
(setq off (- op byte-constant)
|
||
op byte-constant)))
|
||
(setq op (aref byte-code-vector op))
|
||
(insert (format "%-4d" i))
|
||
(insert (symbol-name op))
|
||
(if off (insert " [" (int-to-string off) "]"))
|
||
(indent-to 40)
|
||
(insert (int-to-string n) "\n")))
|
||
(setq i (1+ i))))))
|
||
|
||
;; To avoid "lisp nesting exceeds max-lisp-eval-depth" when bytecomp compiles
|
||
;; itself, compile some of its most used recursive functions (at load time).
|
||
;;
|
||
(eval-when-compile
|
||
(or (byte-code-function-p (symbol-function 'byte-compile-form))
|
||
(assq 'byte-code (symbol-function 'byte-compile-form))
|
||
(let ((byte-optimize nil) ; do it fast
|
||
(byte-compile-warnings nil))
|
||
(mapcar '(lambda (x)
|
||
(or noninteractive (message "compiling %s..." x))
|
||
(byte-compile x)
|
||
(or noninteractive (message "compiling %s...done" x)))
|
||
'(byte-compile-normal-call
|
||
byte-compile-form
|
||
byte-compile-body
|
||
;; Inserted some more than necessary, to speed it up.
|
||
byte-compile-top-level
|
||
byte-compile-out-toplevel
|
||
byte-compile-constant
|
||
byte-compile-variable-ref))))
|
||
nil)
|
||
|
||
(run-hooks 'bytecomp-load-hook)
|
||
|
||
;;; bytecomp.el ends here
|