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use strict;
package Tangram::Dialect;
my @dialects;
sub register
{
push @dialects, shift;
}
sub rate_connect_string
{
return 0;
}
Tangram::Dialect->register();
sub guess
{
my ($class, $cs) = @_;
my @rated = sort { $b->[1] <=> $a->[1] }
grep { $_->[1] }
map { [ $_, $_->rate_connect_string($cs) ] }
@dialects;
return @rated if wantarray;
die "cannot select dialect, more than one have equal rating"
if @rated > 1 && $rated[0][1] == $rated[1][1];
return @rated ? $rated[0][0]->new : undef();
}
sub new
{
my $class = shift;
return bless { @_ }, $class;
}
sub expr
{
my $self = shift;
return shift->expr( @_ );
}
sub make_id
{
shift;
return shift->std_make_id(@_);
}
sub tx_start
{
shift;
shift->std_tx_start(@_);
}
sub tx_commit
{
shift;
shift->std_tx_commit(@_);
}
sub tx_rollback
{
shift;
shift->std_tx_rollback(@_);
}
1;
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