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|
package Test::Stream::Block;
use strict;
use warnings;
use Scalar::Util qw/blessed reftype/;
use Test::Stream::Carp qw/confess carp/;
use Test::Stream::ArrayBase(
accessors => [qw/name coderef params caller deduced _start_line _end_line/],
);
our %SUB_MAPS;
sub PACKAGE() { 0 };
sub FILE() { 1 };
sub LINE() { 2 };
sub SUBNAME() { 3 };
sub init {
my $self = shift;
confess "coderef is a mandatory field for " . blessed($self) . " instances"
unless $self->[CODEREF];
confess "caller is a mandatory field for " . blessed($self) . " instances"
unless $self->[CALLER];
confess "coderef must be a code reference"
unless ref($self->[CODEREF]) && reftype($self->[CODEREF]) eq 'CODE';
$self->deduce;
$self->[PARAMS] ||= {};
}
sub deduce {
my $self = shift;
eval { require B; 1 } || return;
my $code = $self->[CODEREF];
my $cobj = B::svref_2object($code);
my $pkg = $cobj->GV->STASH->NAME;
my $file = $cobj->FILE;
my $line = $cobj->START->line;
my $subname = $cobj->GV->NAME;
$SUB_MAPS{$file}->{$line} = $self->[NAME];
$self->[DEDUCED] = [$pkg, $file, $line, $subname];
$self->[NAME] ||= $subname;
}
sub merge_params {
my $self = shift;
my ($new) = @_;
my $old = $self->[PARAMS];
# Use existing ref, merge in new ones, but old ones are kept since the
# block can override the workflow.
%$old = ( %$new, %$old );
}
sub package { $_[0]->[DEDUCED]->[PACKAGE] }
sub file { $_[0]->[DEDUCED]->[FILE] }
sub subname { $_[0]->[DEDUCED]->[SUBNAME] }
sub run {
my $self = shift;
my @args = @_;
$self->[CODEREF]->(@args);
}
sub detail {
my $self = shift;
my $name = $self->[NAME];
my $file = $self->file;
my $start = $self->start_line;
my $end = $self->end_line;
my $lines;
if ($end && $end != $start) {
$lines = "lines $start -> $end";
}
elsif ($end) {
$lines = "line $start";
}
else {
my ($dpkg, $dfile, $dline) = @{$self->caller};
$lines = "line $start (declared in $dfile line $dline)";
}
my $known = "";
if ($self->[DEDUCED]->[SUBNAME] ne '__ANON__') {
$known = " (" . $self->[DEDUCED]->[SUBNAME] . ")";
}
return "${name}${known} in ${file} ${lines}";
}
sub start_line {
my $self = shift;
return $self->[_START_LINE] if $self->[_START_LINE];
my $start = $self->[DEDUCED]->[LINE];
my $end = $self->end_line || 0;
if ($start == $end || $start == 1) {
$self->[_START_LINE] = $start;
}
else {
$self->[_START_LINE] = $start - 1;
}
return $self->[_START_LINE];
}
sub end_line {
my $self = shift;
return $self->[_END_LINE] if $self->[_END_LINE];
my $call = $self->[CALLER];
my $dedu = $self->[DEDUCED];
_map_package_file($dedu->[PACKAGE], $dedu->[FILE]);
# Check if caller and deduced seem to be from the same place.
my $match = $call->[PACKAGE] eq $dedu->[PACKAGE];
$match &&= $call->[FILE] eq $dedu->[FILE];
$match &&= $call->[LINE] >= $dedu->[LINE];
$match &&= !_check_interrupt($dedu->[FILE], $dedu->[LINE], $call->[LINE]);
if ($match) {
$self->[_END_LINE] = $call->[LINE];
return $call->[LINE];
}
# Uhg, see if we can figure it out.
my @lines = sort { $a <=> $b } keys %{$SUB_MAPS{$dedu->[FILE]}};
for my $line (@lines) {
next if $line <= $dedu->[LINE];
$self->[_END_LINE] = $line;
$self->[_END_LINE] -= 2 unless $SUB_MAPS{$dedu->[FILE]}->{$line} eq '__EOF__';
return $self->[_END_LINE];
}
return undef;
}
sub _check_interrupt {
my ($file, $start, $end) = @_;
return 0 if $start == $end;
my @lines = sort { $a <=> $b } keys %{$SUB_MAPS{$file}};
for my $line (@lines) {
next if $line <= $start;
return $line <= $end;
}
return 0;
}
my %MAPPED;
sub _map_package_file {
my ($pkg, $file) = @_;
return if $MAPPED{$pkg}->{$file}++;
require B;
my %seen;
my @symbols = do { no strict 'refs'; %{"$pkg\::"} };
for my $sym (@symbols) {
my $code = $pkg->can($sym) || next;
next if $seen{$code}++;
my $cobj = B::svref_2object($code);
# Skip imported subs
my $pname = $cobj->GV->STASH->NAME;
next unless $pname eq $pkg;
my $f = $cobj->FILE;
next unless $f eq $file;
# Skip XS/C Files
next if $file =~ m/\.c$/;
next if $file =~ m/\.xs$/;
my $line = $cobj->START->line;
$SUB_MAPS{$file}->{$line} ||= $sym;
}
if (open(my $fh, '<', $file)) {
my $length = () = <$fh>;
close($fh);
$SUB_MAPS{$file}->{$length} = '__EOF__';
}
}
1;
|
