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|
#!/usr/bin/perl
#
# Or perhaps: /usr/local/bin/perl
#
#
undef $/; # undef input file separator; $_ gives the whole file
if($#ARGV<$[) {die "No Files\n";}
open($tagfile,">TAGS") || die "Couldn't open TAGS: $!\n";
while(<>)
{
print "Tagging $ARGV\n";
$a=$_; # read the whole file into $a
$cp=1; # emacs char number of the start of
# the current line
$lp=1; # line number
$tagstring=""; # accumulate all tags of one file here
while(1)
{
# ---- Get the next statement starting on a newline ----
# read over balanced comments
if($a=~/^[ \t\n]*\(\*/)
{ while($a=~/^\s*\(\*/)
{ $d=1; $a=$'; $cp+=length $&; $lp+=(($wombat=$&)=~tr/\n/\n/);
while($d>0 && $a=~/\(\*|\*\)/)
{ $a=$'; $cp+=2+length $`; $lp+=(($wombat=$`)=~tr/\n/\n/);
if($& eq "(*") {$d++} else {$d--};
}
if($d!=0) {die "Unbalanced Comment?";}
}
}
# skip remainder of a line after a comment or a statement
if($cp>1 && $a=~/.*\n/) {$a=$'; $cp+=length $&; $lp++;}
# skip white space lines
while($a=~/^[ \t]*\n/) {$cp+=length $&;$lp++;$a=$'}
# match the next statement
if($a=~/^[^\.]*\./)
{ $stmt=$&;
$newa=$';
$newcp=$cp+length $&;
$newlp=$lp+(($wombat=$&)=~tr/\n/\n/);
}
else { last;}
# ---- The above embarrasses itself if there are semicolons inside comments
# ---- inside commands. Could do better.
# print "----- (",$lp,",",$cp,")\n", $stmt, "\n";
if($stmt=~/^([ \t]*((Fact)|(Goal)|(Lemma)|(Remark)|(Theorem)|(Proposition)|(Corollary))\s+([\w\']+))\s*:/)
{ $tagstring.=$1."\177".$10."\001".$lp.",".$cp."\n"; }
elsif($stmt=~/^([ \t]*((Axiom)|(Hypothesis)|(Parameter)|(Variable))\s+[\w\']+)/)
{ adddecs($stmt,$1); }
elsif($stmt=~/^([ \t]*((Definition)|(Fixpoint)|(Inductive)|(CoInductive)|(Record)|(Variant))\s+([\w\']+))/)
{
$tagstring.=$1."\177".$8."\001".$lp.",".$cp."\n";
if($2 eq "Inductive" || $2 eq "CoInductive" || $2 eq "Variant"){
add_constructors($stmt);
}
elsif($2 eq "Record"){
add_record_labels($stmt, $8);
}
}
$cp=$newcp; $lp=$newlp; $a=$newa;
}
print $tagfile "\f\n".$ARGV.",".(length $tagstring)."\n".$tagstring;
}
close $tagfile;
sub adddecs {
$wk=$_[0];
$tag=$_[1];
$sep=",";
while($tst=($wk=~/\s*([\w\']+)\s*([,:\[])/) && $sep eq ",")
{ $sep=$2; $tagstring.=$tag."\177".$1."\001".$lp.",".$cp."\n"; $wk=$'; }
0;
}
sub add_constructors {
my ($stmt) = @_;
my ($line, $tag);
my $current=0;
# skip to the body of the inductive definition
# and match the first constructor
if($stmt=~/:=\s*(?:\|\s*)?([\w\']+)/gc){
do {
$tag=$1;
$line=substr($stmt, $current, pos($stmt)-$current);
# the previous match may span several lines
# need to remove all but the last line
if($line=~/^.*\n/s){
$current+= length($&);
$cp+= length($&);
$lp+= (($wombat=$&)=~ tr/\n/\n/);
$line=substr($stmt, $current, pos($stmt)-$current);
}
# print "C $tag in line $lp at $cp\n\tline: $line\n";
$tagstring.=$line."\177".$tag."\001".$lp.",".$cp."\n";
# match now the next constructor
} while($stmt=~/\G.*?\|\s*([\w\']+)/sgc);
}
}
sub add_record_labels {
my ($stmt, $record_name) = @_;
my ($line, $tag);
my $current=0;
# skip to the body of the record and match the record constructor
if($stmt=~/:=\s*([\w\']+)?/gc){
if(defined($1)){
$tag=$1;
} else {
$tag="Build_".$record_name;
}
$line=substr($stmt, $current, pos($stmt)-$current);
# the previous match may span several lines
# need to remove all but the last line
if($line=~/^.*\n/s){
$current+= length($&);
$cp+= length($&);
$lp+= (($wombat=$&)=~ tr/\n/\n/);
$line=substr($stmt, $current, pos($stmt)-$current);
}
$tagstring.=$line."\177".$tag."\001".$lp.",".$cp."\n";
# match the first record label
if($stmt=~/\G\s*{\s*([\w\']+)/gc){
do {
$tag=$1;
$line=substr($stmt, $current, pos($stmt)-$current);
# the previous match may span several lines
# need to remove all but the last line
if($line=~/^.*\n/s){
$current+= length($&);
$cp+= length($&);
$lp+= (($wombat=$&)=~ tr/\n/\n/);
$line=substr($stmt, $current, pos($stmt)-$current);
}
$tagstring.=$line."\177".$tag."\001".$lp.",".$cp."\n";
# match now the next record label
} while($stmt=~/\G.*?;\s*([\w\']+)/sgc);
}
}
}
|
