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package ANTLR::Runtime::Parser;
use Readonly;
use Carp;
use Moose;
extends 'ANTLR::Runtime::BaseRecognizer';
has 'input' => (
is => 'rw',
does => 'ANTLR::Runtime::TokenStream'
);
sub reset {
my ($self) = @_;
$self->SUPER::reset(); # reset all recognizer state variables
if (defined $self->input) {
$self->input->seek(0); # rewind the input
}
}
sub get_current_input_symbol {
my ($self, $input) = @_;
return $self->input->LT(1);
}
sub get_missing_symbol {
my ($self, $arg_ref) = @_;
my $input = $arg_ref->{input};
my $exception = $arg_ref->{exception};
my $expected_token_type = $arg_ref->{expected_token_type};
my $follow = $arg_ref->{follow};
my $token_text;
if ($expected_token_type == ANTLR::Runtime::Token->EOF) {
$token_text = '<missing EOF>';
}
else {
$token_text = '<missing ' . $self->get_token_names()->[$expected_token_type] . '>';
}
my $t = ANTLR::Runtime::CommonToken->new({
type => $expected_token_type,
text => $token_text
});
my $current = $input->LT(1);
if ($current->get_type() == ANTLR::Runtime::Token->EOF) {
$current = $input->LT(-1);
}
$t->set_line($current->get_line());
$t->set_char_position_in_line($current->get_char_position_in_line());
$t->set_channel($self->DEFAULT_TOKEN_CHANNEL);
return $t;
}
sub set_token_stream {
my ($self, $input) = @_;
$self->input(undef);
$self->reset();
$self->input($input);
}
sub get_token_stream {
my ($self) = @_;
return $self->input;
}
sub get_source_name {
my ($self) = @_;
return $self->input->get_source_name();
}
sub trace_in {
my ($self, $rule_name, $rule_index) = @_;
$self->SUPER::trace_in($rule_name, $rule_index, $self->input->LT(1));
}
sub trace_out {
my ($self, $rule_name, $rule_index) = @_;
$self->SUPER::trace_out($rule_name, $rule_index, $self->input->LT(1));
}
no Moose;
__PACKAGE__->meta->make_immutable();
1;
__END__
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