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#! /usr/bin/env perl
# Used to be a one-liner:
#
# perl -0777pe ...
#
open (INPUT, "<$ARGV[0]") or die;
@input = <INPUT>;
close (INPUT);
$text = join ("", @input);
# Kill uninteresting code sections.
$text =~ s/#define.*//g;
$text =~ s/#include.*//g;
$text =~ s/#ifndef.*((.|[\r\n])*)#endif/\1/g;
$text =~ s/#if DEBUG(.|[\r\n])*?#endif//g;
$text =~ s/#ifdef __cplusplus(.|[\r\n])*?#endif//g;
# Kill comments.
$text =~ s{/\*(.|[\r\n])*?\*/}{}g;
# Convert type specifiers.
$text =~ s/(LLVM[^(\n\r]+?Ref)(?=[^(])/:pointer/g;
$text =~ s/(const )?char \*/:string /g;
$text =~ s/(\w|-|:)+ \*/:pointer /g;
$text =~ s/unsigned long long/:unsigned-long-long/g;
$text =~ s/(<!-)((void)|(unsigned)|(long)|(int)) /:\1 /g;
# Kill argument names.
#$text =~ s/([(,][^ ]+) .*?(?=[,)])/\1/g;
# Convert enums into something useful.
@statements = split /;/, $text; #/
@enum_names = ();
@new_statements = ();
foreach $statement (@statements)
{
$statement =~ s/^[ \t\n\r]*//;
$statement =~ s/[ \t\n\r]*$//;
$statement =~ s/[ \t\n\r]+/ /g;
if ($statement =~ /^typedef enum {(.*?)} (.*)/
or $statement =~ /^enum {(.*?)}.*$/)
{
$values = $1;
@values = split /,/, $values; #/;
$name = $2;
unless ($name =~ /^$/)
{
push @enum_names, ($name);
}
$value_value = -1;
foreach $value (@values)
{
$value =~ s/^ //;
$value =~ s/ $//;
if ($value =~ /(.*?) ?= ?(.+)/)
{
$value_name = $1;
$value_value = eval $2; # for stuff like `1 << 4'
}
else
{
$value_name = $value;
$value_value = $value_value + 1;
}
push @new_statements, ("(setq +$value_name+ $value_value)");
}
}
elsif ($statement =~ /^typedef/)
{
# Ignore.
}
else
{
unless ($statement =~ /^ ?$/)
{
$statement =~ /^((?:\w|:|-)+) (\w+) ?\((.*)\)$/ or die "Don't understand: $statement";
$return_type = $1;
$c_name = $2;
$arguments = $3;
@argtypes = ();
foreach (split /,/, $arguments) #/
{
unless (/^void$/)
{
/^ ?((?:\w|:|-)+)(?: (.*))?$/ or die "Don't understand: $_ (in: $statement)";
push @argtypes, ($1);
}
}
$argtypes = join (" ", @argtypes);
@lisp_name_components = ();
$_ = $c_name;
s/^LLVM//;
while (/^(.*?)([A-Z])(.*)$/)
{
$start = $1;
$lower = lc $2;
$rest = $3;
unless ($start =~ /^$/)
{
$start =~ /^\w+$/ or die "Weird stuff here: $start";
push @lisp_name_components, ($start);
}
$_ = "${lower}${rest}";
}
push @lisp_name_components, ($_);
$lisp_name = join ("-", @lisp_name_components);
push @new_statements, "(define-foreign-function $lisp_name \"$c_name\" nil $return_type $argtypes)";
}
}
}
$text = join ("\n", @new_statements);
# Replace enum types with :int.
foreach $type (@enum_names)
{
$text =~ s/$type /:int /g;
}
if ($ARGV[1] =~ /^$/)
{
print "$text\n";
}
else
{
open (OUTPUT, ">$ARGV[1]") or die "Couldn't open file for writing: $ARGV[1]";
print (OUTPUT "$text\n");
close (OUTPUT);
}
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