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package FeatureParser;
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# ************************************************************
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# Description   : Reads the feature files and store the values
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# Author        : Chad Elliott
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# Create Date   : 5/21/2003
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# ************************************************************
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# ************************************************************
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# Pragmas
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# ************************************************************
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use strict;
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use Parser;
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use vars qw(@ISA);
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@ISA = qw(Parser);
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# ************************************************************
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# Subroutine Section
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# ************************************************************
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sub new {
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  my($class)    = shift;
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  my($features) = shift;
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  my(@files)    = @_;
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  my($self)     = $class->SUPER::new();
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  ## Set the values associative array
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  $self->{'values'} = {};
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  ## Process each feature file
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  foreach my $f (@files) {
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    if (defined $f) {
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      my($status, $warn) = $self->cached_file_read($f);
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      if (!$status) {
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        ## We only want to warn the user about problems
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        ## with the feature file.
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        my($lnumber) = $self->get_line_number();
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        $self->warning($self->mpc_basename($f) . ": line $lnumber: $warn");
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      }
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    }
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  }
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  ## Process each feature definition
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  foreach my $feature (@$features) {
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    my($status, $warn) = $self->parse_line(undef, $feature);
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    if (!$status) {
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      ## We only want to warn the user about problems
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      ## with the -feature option.
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      $self->warning("-features parameter: $warn");
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    }
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  }
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  return $self;
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}
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sub parse_line {
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  my($self)   = shift;
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  my($if)     = shift;
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  my($line)   = shift;
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  my($status) = 1;
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  my($error)  = undef;
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  if ($line eq '') {
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  }
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  elsif ($line =~ /^(\w+)\s*=\s*(\d+)$/) {
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    $self->{'values'}->{lc($1)} = $2;
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  }
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  else {
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    $status = 0;
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    $error  = "Unrecognized line: $line";
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  }
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  return $status, $error;
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}
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sub get_names {
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  my($self)  = shift;
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  my(@names) = keys %{$self->{'values'}};
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  return \@names;
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}
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sub get_value {
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  my($self) = shift;
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  my($tag)  = shift;
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  return $self->{'values'}->{lc($tag)};
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}
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1;