зеркало из https://github.com/mozilla/pjs.git
284 строки
8.5 KiB
Perl
284 строки
8.5 KiB
Perl
#!/usr/bin/perl
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#
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is JavaScript 2 Prototype.
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#
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# The Initial Developer of the Original Code is
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# Netscape Communications Corporation.
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# Portions created by the Initial Developer are Copyright (C) 1997-1999
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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use strict;
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use jsicodes;
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##############################################################################
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# HELLO, ARE YOU READING THIS?
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# The opcode definition is now in jsicodes.pm, please go there to make changes.
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##############################################################################
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my $tab = " ";
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my $init_tab = $tab;
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my $enum_decs = "";
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my $class_decs = "";
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my @name_array;
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my $opcode_maxlen = 0;
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my $k;
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if (!$ARGV[0]) {
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# no args, collect all opcodes
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for $k (sort(keys(%jsicodes::ops))) {
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&collect($k);
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}
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} else {
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# collect defs for only the opcodes specified on the command line
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while ($k = pop(@ARGV)) {
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&collect (uc($k));
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}
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}
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&spew;
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sub collect {
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# grab the info from the $k record in $ops, and append it to
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# $enum_decs, @name_array, and $class_decs.
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my ($k) = @_;
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if (length($k) > $opcode_maxlen) {
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$opcode_maxlen = length($k);
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}
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my $c = $jsicodes::ops{$k};
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if (!$c) {
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die ("Unknown opcode, $k\n");
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}
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my $opname = $k;
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my $cname = jsicodes::get_classname ($k);
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my $super = $c->{"super"};
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my $constructor = $super;
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my @params;
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if ($c->{"params"}) {
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@params = @{$c->{"params"}};
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} else {
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@params = ();
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}
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my $rem = $c->{"rem"};
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my ($dec_list, $call_list, $template_list) =
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&get_paramlists(@params);
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my @types = split (", ", $template_list);
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my $constr_params = $call_list ? $opname . ", " . $call_list : $opname;
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if ($super =~ /Instruction_\d/) {
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$super .= "<" . $template_list . ">";
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}
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push (@name_array, $opname);
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$enum_decs .= "$init_tab$tab$opname, /* $rem */\n";
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if ($super) {
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$class_decs .= ($init_tab . "class $cname : public $super {\n" .
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$init_tab . "public:\n" .
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$init_tab . $tab . "/* $rem */\n" .
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$init_tab . $tab . "$cname ($dec_list) :\n" .
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$init_tab . $tab . $tab . "$super\n" .
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"$init_tab$tab$tab($constr_params) " .
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"{};\n");
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if (!$c->{"super_has_print"}) {
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$class_decs .= ($init_tab . $tab .
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"virtual Formatter& print(Formatter& f) {\n" .
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$init_tab . $tab . $tab . "f << opcodeNames[$opname]" .
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&get_print_body(@types) . ";\n" .
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$init_tab . $tab . $tab . "return f;\n" .
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$init_tab . $tab . "}\n");
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my $printops_body = &get_printops_body(@types);
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my $printops_decl = "virtual Formatter& printOperands(Formatter& f, ";
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# $printops_decl .= ($dec_list =~ /ArgumentList/) ?
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# "const JSValues& registers" :
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# "const JSValues& registers";
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$printops_decl .= ($printops_body eq "") ?
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"const JSValues& /*registers*/" :
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"const JSValues& registers";
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$printops_decl .= ") {\n";
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$class_decs .= ($init_tab . $tab .
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$printops_decl .
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$printops_body .
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$init_tab . $tab . $tab . "return f;\n" .
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$init_tab . $tab . "}\n");
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} else {
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$class_decs .= $init_tab . $tab .
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"/* print() and printOperands() inherited from $super */\n";
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}
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$class_decs .= $init_tab . "};\n\n";
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}
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}
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sub spew {
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# print the info in $enum_decs, @name_aray, and $class_decs to stdout.
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my $opname;
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print "// THIS FILE IS MACHINE GENERATED! DO NOT EDIT BY HAND!\n\n";
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print "#if !defined(OPCODE_NAMES)\n\n";
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print $tab . "enum {\n$enum_decs$tab};\n\n";
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print $class_decs;
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print "#else\n\n";
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print $tab . "char *opcodeNames[] = {\n";
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for $opname (@name_array) {
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print "$tab$tab\"$opname";
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for (0 .. $opcode_maxlen - length($opname) - 1) {
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print " ";
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}
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print "\",\n"
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}
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print "$tab};\n\n";
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print "#endif\n\n"
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}
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sub get_paramlists {
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# parse the params entry (passed into @types) into various parameter lists
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# used in the class declaration
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my @types = @_;
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my @dec;
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my @call;
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my @tostr;
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my @template;
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my $op = 1;
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my $type;
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for $type (@types) {
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my $pfx;
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my $deref;
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my $member;
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my $default;
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($type, $default) = split (" = ", $type);
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if ($default ne "") {
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$default = " = " . $default;
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}
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$pfx = $deref = "";
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$member = "mOp$op";
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push (@dec, "$type aOp$op" . "$default");
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push (@call, "aOp$op");
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push (@template, $type);
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$op++;
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}
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return (join (", ", @dec), join (", ", @call), join (", ", @template));
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}
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sub get_print_body {
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# generate the body of the print() function
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my (@types) = @_;
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my $type;
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my @oplist;
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my $op = 1;
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my $in = $init_tab . $tab . $tab;
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for $type (@types) {
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if ($type eq "TypedRegister") {
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push (@oplist, "mOp$op" );
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} elsif ($type eq "Label*") {
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push (@oplist, "\"Offset \" << ((mOp$op) ? mOp$op->mOffset : NotAnOffset)")
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} elsif ($type =~ /String/) {
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push (@oplist, "\"'\" << *mOp$op << \"'\"");
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} elsif ($type =~ /JSType *\*/) {
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push (@oplist, "\"'\" << mOp$op->getName() << \"'\"");
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} elsif ($type =~ /JSFunction *\*/) {
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push (@oplist, "\"JSFunction\"");
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} elsif ($type =~ /bool/) {
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push (@oplist, "\"'\" << ((mOp$op) ? \"true\" : \"false\") << \"'\"");
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} elsif ($type =~ /ICodeModule/) {
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push (@oplist, "\"ICodeModule\"");
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} elsif ($type =~ /FunctionDefinition/) {
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push (@oplist, "\"FunctionDefinition\"");
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} elsif ($type =~ /JSClass *\*/) {
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push (@oplist, "mOp$op->getName()");
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} else {
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push (@oplist, "mOp$op");
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}
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$op++;
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}
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my $rv = join (" << \", \" << ", @oplist);
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if ($rv ne "") {
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$rv = " << \"\\t\" << " . $rv;
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}
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return $rv;
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}
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sub get_printops_body {
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# generate the body of the printOperands() function
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my (@types) = @_;
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my $type;
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my @oplist;
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my $op = 1;
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my $in = $init_tab . $tab . $tab;
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for $type (@types) {
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if ($type eq "TypedRegister") {
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push (@oplist, "getRegisterValue(registers, mOp$op.first)");
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# push (@oplist, "mOp$op.first");
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# push (@oplist, "\"R\" << mOp$op.first << '=' << registers[mOp$op.first]");
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} elsif ($type eq "ArgumentList") {
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push (@oplist, "ArgList(mOp$op, registers)");
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}
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$op++;
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}
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my $rv = join (" << \", \" << ", @oplist);
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if ($rv ne "") {
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$rv = $init_tab . $tab . $tab . "f << " . $rv . ";\n";
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}
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return $rv;
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}
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