move ExtraClauses to -keyword

[scpubgit/Q-Branch.git] / lib / SQL / Abstract / ExtraClauses.pm

diff --git a/lib/SQL/Abstract/ExtraClauses.pm b/lib/SQL/Abstract/ExtraClauses.pm
index 341d9da..57faed7 100644 (file)
--- a/lib/SQL/Abstract/ExtraClauses.pm
+++ b/lib/SQL/Abstract/ExtraClauses.pm
@@ -5,16 +5,16 @@ use Moo;
 has sqla => (
   is => 'ro', init_arg => undef,
   handles => [ qw(
-    expand_expr expand_maybe_list_expr render_aqt
-    format_keyword join_query_parts
+    expand_expr expand_maybe_list_expr render_aqt join_query_parts
   ) ],
 );
 
-BEGIN { *puke = \&SQL::Abstract::puke }
-
 sub cb {
-  my ($self, $method) = @_;
-  return sub { local $self->{sqla} = shift; $self->$method(@_) };
+  my ($self, $method, @args) = @_;
+  return sub {
+    local $self->{sqla} = shift;
+    $self->$method(@args, @_)
+  };
 }
 
 sub apply_to {
@@ -60,10 +60,8 @@ sub apply_to {
   });
 
   $sqla->clause_expanders(
-    'update.from' => $self->cb('_expand_select_clause_from'),
-    'delete.using' => $self->cb(sub {
-      +(using => $_[0]->_expand_from_list(undef, $_[2]));
-    }),
+    'update.from' => $self->cb('_expand_from_list'),
+    'delete.using' => $self->cb('_expand_from_list'),
     'insert.rowvalues' => $self->cb(sub {
       +(from => $_[0]->expand_expr({ -values => $_[2] }));
     }),
@@ -74,46 +72,19 @@ sub apply_to {
 
   # set ops
   $sqla->wrap_expander(select => sub {
-    my $orig = shift;
-    $self->cb(sub {
-      my $self = shift;
-      my $exp = $self->sqla->$orig(@_);
-      return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
-      if (my @keys = grep $sel->{$_}, @before_setop) {
-        my %inner; @inner{@keys} = delete @{$sel}{@keys};
-        unshift @{(values(%$setop))[0]{queries}},
-          { -select => \%inner };
-      }
-      return $exp;
-    });
+    $self->cb('_expand_select', $_[0], \@before_setop);
   });
-  my $expand_setop = $self->cb(sub {
-    my ($self, $setop, $args) = @_;
-    +{ "-${setop}" => {
-         %$args,
-         queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
-    } };
-  });
-  $sqla->expanders(map +($_ => $expand_setop), qw(union intersect except));
 
-  $sqla->clause_renderer('select.setop' => $self->cb(sub {
-    my ($self, undef, $setop) = @_;
-    $self->render_aqt($setop);
-  }));
+  $sqla->clause_renderer(
+    'select.setop' => $self->cb(sub { $_[0]->render_aqt($_[2]); })
+  );
 
-  $sqla->renderer($_ => $self->cb('_render_setop'))
-    for qw(union intersect except);
+  foreach my $setop (qw(union intersect except)) {
+    $sqla->expander($setop => $self->cb('_expand_setop'));
+    $sqla->renderer($setop => $self->cb('_render_setop'));
+  }
 
-  my $setop_expander = $self->cb(sub {
-    my ($self, $setop, $args) = @_;
-    my ($op, $type) = split '_', $setop;
-    +(setop => $self->expand_expr({
-      "-${op}" => {
-        ($type ? (type => $type) : ()),
-        queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
-      }
-    }));
-  });
+  my $setop_expander = $self->cb('_expand_clause_setop');
 
   $sqla->clause_expanders(
     map +($_ => $setop_expander),
@@ -138,7 +109,7 @@ sub apply_to {
   $sqla->expander(cast => $self->cb('_expand_cast'));
 
   $sqla->clause_expanders(
-    "select.from", $self->cb('_expand_select_clause_from'),
+    "select.from", $self->cb('_expand_from_list'),
     "update.target", $self->cb('_expand_update_clause_target'),
     "update.update", $self->cb('_expand_update_clause_target'),
   );
@@ -146,9 +117,16 @@ sub apply_to {
   return $sqla;
 }
 
-sub _expand_select_clause_from {
-  my ($self, undef, $from) = @_;
-  +(from => $self->_expand_from_list(undef, $from));
+sub _expand_select {
+  my ($self, $orig, $before_setop, @args) = @_;
+  my $exp = $self->sqla->$orig(@args);
+  return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
+  if (my @keys = grep $sel->{$_}, @$before_setop) {
+    my %inner; @inner{@keys} = delete @{$sel}{@keys};
+    unshift @{(values(%$setop))[0]{queries}},
+      { -select => \%inner };
+  }
+  return $exp;
 }
 
 sub _expand_from_list {
@@ -209,14 +187,14 @@ sub _render_join {
 
   my @parts = (
     $args->{from},
-    $self->format_keyword(join '_', ($args->{type}||()), 'join'),
+    { -keyword => join '_', ($args->{type}||()), 'join' },
     (map +($_->{-ident} || $_->{-as} ? $_ : ('(', $_, ')')), $args->{to}),
     ($args->{on} ? (
-      $self->format_keyword('on') ,
+      { -keyword => 'on' },
       $args->{on},
     ) : ()),
     ($args->{using} ? (
-      $self->format_keyword('using'),
+      { -keyword => 'using' },
       '(', $args->{using}, ')',
     ) : ()),
   );
@@ -241,7 +219,7 @@ sub _render_as {
   return $self->join_query_parts(
     ' ',
     $thing,
-    $self->format_keyword('as'),
+    { -keyword => 'as' },
     $alias,
   );
 }
@@ -322,23 +300,42 @@ sub _render_with {
       my ($alias, $query) = @$_;
       $self->join_query_parts(' ',
           $alias,
-          $self->format_keyword('as'),
+          { -keyword => 'as' },
           $query,
       )
     } @{$with->{queries}}
   );
   return $self->join_query_parts(' ',
-    $self->format_keyword(join '_', 'with', ($with->{type}||'')),
+    { -keyword => join '_', 'with', ($with->{type}||'') },
     $q_part,
   );
 }
 
+sub _expand_setop {
+  my ($self, $setop, $args) = @_;
+  +{ "-${setop}" => {
+       %$args,
+       queries => [ map $self->expand_expr($_), @{$args->{queries}} ],
+  } };
+}
+
 sub _render_setop {
   my ($self, $setop, $args) = @_;
   $self->join_query_parts(
-    ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
+    { -keyword => ' '.join('_', $setop, ($args->{type}||())).' ' },
     @{$args->{queries}}
   );
 }
 
+sub _expand_clause_setop {
+  my ($self, $setop, $args) = @_;
+  my ($op, $type) = split '_', $setop;
+  +(setop => $self->expand_expr({
+    "-${op}" => {
+      ($type ? (type => $type) : ()),
+      queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
+    }
+  }));
+}
+
 1;