pjs/js/js2/tools/gencode.pl

285 строки
6.6 KiB
Perl
Исходник Обычный вид История

use strict;
my $tab = " ";
my $tab2 = " ";
my $enum_decs = "";
my $class_decs = "";
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my @name_array;
my $opcode_maxlen = 0;
my $compare_op =
{
super => "Compare",
rem => "dest, source",
params => [ ("Register", "Register") ]
};
my $math_op =
{
super => "Arithmetic",
rem => "dest, source1, source2",
params => [ ("Register", "Register", "Register") ]
};
my $cbranch_op =
{
super => "GenericBranch",
rem => "target label, condition",
params => [ ("Label*", "Register") ]
};
my %ops;
$ops{"NOP"} =
{
super => "Instruction",
rem => "do nothing and like it",
params => [ () ]
};
$ops{"MOVE"} =
{
super => "Instruction_2",
rem => "dest, source",
params => [ ("Register", "Register") ]
};
$ops{"LOAD_VAR"} =
{
super => "Instruction_2",
rem => "dest, index of frame slot",
params => [ ("Register", "uint32" ) ]
};
$ops{"SAVE_VAR"} =
{
super => "Instruction_2",
rem => "index of frame slot, source",
params => [ ("uint32", "Register") ]
};
$ops{"LOAD_IMMEDIATE"} =
{
super => "Instruction_2",
rem => "dest, immediate value (double)",
params => [ ("Register", "double" ) ]
};
$ops{"LOAD_NAME"} =
{
super => "Instruction_2",
rem => "dest, name",
params => [ ("Register", "StringAtom*" ) ]
};
$ops{"SAVE_NAME"} =
{
super => "Instruction_2",
rem => "name, source",
params => [ ("StringAtom*", "Register") ]
};
$ops{"NEW_OBJECT"} =
{
super => "Instruction_1",
rem => "dest",
params => [ ("Register" ) ]
};
$ops{"NEW_ARRAY"} =
{
super => "Instruction_1",
rem => "dest",
params => [ ("Register" ) ]
};
$ops{"GET_PROP"} =
{
super => "Instruction_3",
rem => "dest, object, prop name",
params => [ ("Register", "Register", "StringAtom*") ]
};
$ops{"SET_PROP"} =
{
super => "Instruction_3",
rem => "object, name, source",
params => [ ("Register", "StringAtom*", "Register") ]
};
$ops{"GET_ELEMENT"} =
{
super => "Instruction_3",
rem => "dest, array, index",
params => [ ("Register", "Register", "Register") ]
};
$ops{"SET_ELEMENT"} =
{
super => "Instruction_3",
rem => "base, source1, source2",
params => [ ("Register", "Register", "Register") ]
};
$ops{"ADD"} = $math_op;
$ops{"SUBTRACT"} = $math_op;
$ops{"MULTIPLY"} = $math_op;
$ops{"DIVIDE"} = $math_op;
$ops{"COMPARE_LT"} = $compare_op;
$ops{"COMPARE_LE"} = $compare_op;
$ops{"COMPARE_EQ"} = $compare_op;
$ops{"COMPARE_NE"} = $compare_op;
$ops{"COMPARE_GE"} = $compare_op;
$ops{"COMPARE_GT"} = $compare_op;
$ops{"NOT"} =
{
super => "Instruction_2",
rem => "dest, source",
params => [ ("Register", "Register") ]
};
$ops{"BRANCH"} =
{
super => "GenericBranch",
rem => "target label",
params => [ ("Label*") ]
};
$ops{"BRANCH_LT"} = $cbranch_op;
$ops{"BRANCH_LE"} = $cbranch_op;
$ops{"BRANCH_EQ"} = $cbranch_op;
$ops{"BRANCH_NE"} = $cbranch_op;
$ops{"BRANCH_GE"} = $cbranch_op;
$ops{"BRANCH_GT"} = $cbranch_op;
$ops{"RETURN"} =
{
super => "Instruction_1",
rem => "return value or NotARegister",
params => [ ("Register = NotARegister") ]
};
$ops{"CALL"} =
{
super => "Instruction_3",
rem => "result, target, args",
params => [ ("Register" , "Register", "RegisterList") ]
};
my $k;
if (!$ARGV[0]) {
for $k (sort(keys(%ops))) {
&collect($k);
}
} else {
while ($k = pop(@ARGV)) {
&collect ($k);
}
}
&spew;
sub collect {
my ($k) = @_;
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if (length($k) > $opcode_maxlen) {
$opcode_maxlen = length($k);
}
my $c = $ops{$k};
my $opname = $k;
my $cname = get_classname ($k);
my $super = $c->{"super"};
my $constructor = $super;
my $rem = $c->{"rem"};
my ($dec_list, $call_list, $tostr_list, $template_list) =
&get_paramlists(@{$c->{"params"}});
my $params = $call_list ? $opname . ", " . $call_list : $opname;
my $tostr = $tostr_list ? " << \"\\t\" << $tostr_list" : "";
if ($super =~ /Instruction_\d/) {
$super .= "<" . $template_list . ">";
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}
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push (@name_array, $opname);
$enum_decs .= "$tab2$tab$opname, /* $rem */\n";
$class_decs .= ($tab2 . "class $cname : public $super {\n" .
$tab2 . "public:\n" .
$tab2 . $tab . "/* $rem */\n" .
$tab2 . $tab . "$cname ($dec_list) :\n" .
$tab2 . $tab . $tab . "$super\n$tab2$tab$tab($params) " .
"{};\n" .
$tab2 . $tab .
"virtual Formatter& print (Formatter& f) {\n" .
$tab2 . $tab . $tab . "f << " .
"opcodeNames[$opname]$tostr;\n" .
$tab2 . $tab . $tab . "return f;\n" .
$tab2 . $tab . "}\n" .
$tab2 . "};\n\n");
}
sub spew {
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my $opname;
print $tab . "enum ICodeOp {\n$enum_decs$tab};\n\n";
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print $tab . "static char *opcodeNames[] = {\n";
for $opname (@name_array) {
print "$tab$tab\"$opname";
for (0 .. $opcode_maxlen - length($opname) - 1) {
print " ";
}
print "\",\n"
}
print "$tab};\n\n";
print $class_decs;
}
sub get_classname {
my ($enum_name) = @_;
my @words = split ("_", $enum_name);
my $cname = "";
my $i;
my $word;
for $word (@words) {
if (length($word) == 2) {
$cname .= uc($word);
} else {
$cname .= uc(substr($word, 0, 1)) . lc(substr($word, 1));
}
}
return $cname;
}
sub get_paramlists {
my @types = @_;
my @dec;
my @call;
my @tostr;
my @template;
my $op = 1;
my $type;
for $type (@types) {
my $pfx;
my $deref;
my $member;
my $default;
($type, $default) = split (" = ", $type);
if ($default ne "") {
$default = " = " . $default;
}
$pfx = $deref = "";
$member = "op$op";
push (@dec, "$type op$op" . "A$default");
push (@call, "op$op" . "A");
push (@template, $type);
if ($type eq "Register") {
$pfx = "R";
} elsif ($type eq "Label*") {
$member = "op1->offset";
$pfx = "Offset ";
} elsif ($type eq "StringAtom*") {
$deref = "*";
}
if ($pfx) {
push (@tostr, "\"" . $pfx . "\" << " . $deref . $member);
} else {
push (@tostr, $deref . "op$op");
}
$op++;
}
return (join (", ", @dec), join (", ", @call),
join (" << \", \" << ", @tostr), join (", ", @template));
}