/usr/share/automake-1.10/Automake/Location.pm is in automake1.10 1:1.10.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | # Copyright (C) 2002, 2003 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
package Automake::Location;
=head1 NAME
Automake::Location - a class for location tracking, with a stack of contexts
=head1 SYNOPSIS
use Automake::Location;
# Create a new Location object
my $where = new Automake::Location "foo.c:13";
# Change the location
$where->set ("foo.c:14");
# Get the location (without context).
# Here this should print "foo.c:14"
print $where->get, "\n";
# Push a context, and change the location
$where->push_context ("included from here");
$where->set ("bar.h:1");
# Print the location and the stack of context (for debugging)
print $where->dump;
# This should display
# bar.h:1:
# foo.c:14: included from here
# Get the contexts (list of [$location_string, $description])
for my $pair (reverse $where->contexts)
{
my ($loc, $descr) = @{$pair};
...
}
# Pop a context, and reset the location from the previous context.
$where->pop_context;
# Clone a Location. Use this when storing the state of a location
# that would otherwise be modified.
my $where_copy = $where->clone;
=head1 DESCRIPTION
C<Location> objects are used to keep track of locations in Automake,
and used to produce diagnostics.
A C<Location> object is made of two parts: a location string, and
a stack of contexts.
For instance if C<VAR> is defined at line 1 in F<bar.h> which was
included at line 14 in F<foo.c>, then the location string should be
C<"bar.h:10"> and the context should be the pair (C<"foo.c:14">,
C<"included from here">).
Section I<SYNOPSIS> shows how to setup such a C<Location>, and access
the location string or the stack of contexts.
You can pass a C<Location> to C<Automake::Channels::msg>.
=cut
sub new ($;$)
{
my ($class, $position) = @_;
my $self = {
position => $position,
contexts => [],
};
bless $self, $class;
return $self;
}
sub set ($$)
{
my ($self, $position) = @_;
$self->{'position'} = $position;
}
sub get ($)
{
my ($self) = @_;
return $self->{'position'};
}
sub push_context ($$)
{
my ($self, $context) = @_;
push @{$self->{'contexts'}}, [$self->get, $context];
$self->set (undef);
}
sub pop_context ($)
{
my ($self) = @_;
my $pair = pop @{$self->{'contexts'}};
$self->set ($pair->[0]);
return @{$pair};
}
sub get_contexts ($)
{
my ($self) = @_;
return @{$self->{'contexts'}};
}
sub clone ($)
{
my ($self) = @_;
my $other = new Automake::Location ($self->get);
my @contexts = $self->get_contexts;
for my $pair (@contexts)
{
push @{$other->{'contexts'}}, [@{$pair}];
}
return $other;
}
sub dump ($)
{
my ($self) = @_;
my $res = ($self->get || 'INTERNAL') . ":\n";
for my $pair (reverse $self->get_contexts)
{
$res .= $pair->[0] || 'INTERNAL';
$res .= ": $pair->[1]\n";
}
return $res;
}
=head1 SEE ALSO
L<Automake::Channels>
=head1 HISTORY
Written by Alexandre Duret-Lutz E<lt>F<adl@gnu.org>E<gt>.
=cut
1;
### Setup "GNU" style for perl-mode and cperl-mode.
## Local Variables:
## perl-indent-level: 2
## perl-continued-statement-offset: 2
## perl-continued-brace-offset: 0
## perl-brace-offset: 0
## perl-brace-imaginary-offset: 0
## perl-label-offset: -2
## cperl-indent-level: 2
## cperl-brace-offset: 0
## cperl-continued-brace-offset: 0
## cperl-label-offset: -2
## cperl-extra-newline-before-brace: t
## cperl-merge-trailing-else: nil
## cperl-continued-statement-offset: 2
## End:
|