{ regex => qr/^ (?: not \s )? bool $/xi, handler => '_where_op_BOOL' },
{ regex => qr/^ ident $/xi, handler => '_where_op_IDENT' },
{ regex => qr/^ value $/xi, handler => '_where_op_VALUE' },
+ { regex => qr/^ op $/xi, handler => '_where_op_OP' },
+ { regex => qr/^ bind $/xi, handler => '_where_op_BIND' },
);
#======================================================================
sub _expand_expr_hashpair {
my ($self, $k, $v, $logic) = @_;
- if (!ref($v)) {
- if ($k !~ /^-/) {
- return +{ $k => { $self->{cmp} => $v } };
+ unless (defined($k) and length($k)) {
+ if (defined($k) and is_literal_value($v)) {
+ belch 'Hash-pairs consisting of an empty string with a literal are deprecated, and will be removed in 2.0: use -and => [ $literal ] instead';
+ return $v;
}
+ puke "Supplying an empty left hand side argument is not supported";
}
- if ($k eq '-nest') {
- return $self->_expand_expr($v);
- }
- if ($k !~ /^-/ and my $literal = is_literal_value($v)) {
- unless (length $k) {
- belch 'Hash-pairs consisting of an empty string with a literal are deprecated, and will be removed in 2.0: use -and => [ $literal ] instead';
- return \$literal;
+ if ($k =~ /^-/) {
+ if ($k eq '-nest') {
+ return $self->_expand_expr($v);
+ }
+ if ($k eq '-bool') {
+ if (ref($v)) {
+ return $self->_expand_expr($v);
+ }
+ puke "-bool => undef not supported" unless defined($v);
+ return { -ident => $v };
+ }
+ if (my ($rest) = $k =~/^-not[_ ](.*)$/) {
+ return $self->_expand_expr({ -not => { "-${rest}", $v } }, $logic);
+ }
+ } else {
+ unless (defined($v)) {
+ my $orig_op = my $op = $self->{cmp};
+ my $is =
+ $op =~ /^not$/i ? 'is not' # legacy
+ : $op =~ $self->{equality_op} ? 'is'
+ : $op =~ $self->{like_op} ? belch("Supplying an undefined argument to '@{[ uc $op]}' is deprecated") && 'is'
+ : $op =~ $self->{inequality_op} ? 'is not'
+ : $op =~ $self->{not_like_op} ? belch("Supplying an undefined argument to '@{[ uc $op]}' is deprecated") && 'is not'
+ : puke "unexpected operator '$orig_op' with undef operand";
+ return +{ -op => [ $is.' null', { -ident => $k } ] };
+ }
+ if (!ref($v)) {
+ return +{
+ -op => [
+ $self->{cmp},
+ { -ident => $k },
+ { -bind => [ $k, $v ] }
+ ]
+ };
+ }
+ if (ref($v) eq 'ARRAY') {
+ return $self->{sqlfalse} unless @$v;
+ $self->_debug("ARRAY($k) means distribute over elements");
+ my $this_logic = (
+ $v->[0] =~ /^-((?:and|or))$/i
+ ? ($v = [ @{$v}[1..$#$v] ], $1)
+ : ($self->{logic} || 'or')
+ );
+ return +{ "-${this_logic}" => [ map $self->_expand_expr({ $k => $_ }, $this_logic), @$v ] };
+ }
+ if (my $literal = is_literal_value($v)) {
+ unless (length $k) {
+ belch 'Hash-pairs consisting of an empty string with a literal are deprecated, and will be removed in 2.0: use -and => [ $literal ] instead';
+ return \$literal;
+ }
+ my ($sql, @bind) = @$literal;
+ return \[ $self->_quote($k).' '.$sql, @bind ];
}
- my ($sql, @bind) = @$literal;
- return \[ $self->_quote($k).' '.$sql, @bind ];
}
return { $k => $v };
}
my ($self, $op, $rhs) = @_;
# top level special ops are illegal in general
- # this includes the -ident/-value ops (dual purpose unary and special)
puke "Illegal use of top-level '-$op'"
- if ! defined $self->{_nested_func_lhs} and List::Util::first { $op =~ $_->{regex} } @{$self->{special_ops}};
+ if !(defined $self->{_nested_func_lhs})
+ and List::Util::first { $op =~ $_->{regex} } @{$self->{special_ops}}
+ and not List::Util::first { $op =~ $_->{regex} } @{$self->{unary_ops}};
if (my $op_entry = List::Util::first { $op =~ $_->{regex} } @{$self->{unary_ops}}) {
my $handler = $op_entry->{handler};
}
# in case we are called as a top level special op (no '=')
- my $lhs = shift;
+ my $has_lhs = my $lhs = shift;
$_ = $self->_convert($self->_quote($_)) for ($lhs, $rhs);
- return $lhs
+ return $has_lhs
? "$lhs = $rhs"
: $rhs
;
;
}
+
+my %unop_postfix = map +($_ => 1), 'is null', 'is not null';
+
+sub _where_op_OP {
+ my ($self, undef, $v) = @_;
+ my ($op, @args) = @$v;
+ $op =~ s/^-// if length($op) > 1;
+ local $self->{_nested_func_lhs};
+ if (@args == 1) {
+ my ($expr_sql, @bind) = $self->_recurse_where($args[0]);
+ my $final_op = join ' ', split '_', $op;
+ my $op_sql = $self->_sqlcase($final_op);
+ my $final_sql = (
+ $unop_postfix{lc($final_op)}
+ ? "${expr_sql} ${op_sql}"
+ : "${op_sql} ${expr_sql}"
+ );
+ return ($final_sql, @bind);
+ } elsif (@args == 2) {
+ my ($l, $r) = map [ $self->_recurse_where($_) ], @args;
+ return ( $l->[0].' '.$self->_sqlcase(join ' ', split '_', $op).' '.$r->[0], @{$l}[1..$#$l], @{$r}[1..$#$r] );
+ }
+ die "unhandled";
+}
+
+sub _where_op_BIND {
+ my ($self, undef, $bind) = @_;
+ return ($self->_convert('?'), $self->_bindtype(@$bind));
+}
+
sub _where_hashpair_ARRAYREF {
my ($self, $k, $v) = @_;