clean up calling convention

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

diff --git a/lib/SQL/Abstract/Clauses.pm b/lib/SQL/Abstract/Clauses.pm
index bbe6eb9..fc36e74 100644 (file)
--- a/lib/SQL/Abstract/Clauses.pm
+++ b/lib/SQL/Abstract/Clauses.pm
@@ -16,12 +16,12 @@ sub register_defaults {
   my ($self) = @_;
   $self->{clauses_of}{select} = [ qw(select from where order_by) ];
   $self->{expand}{select} = sub { shift->_expand_statement(@_) };
-  $self->{render}{select} = sub { shift->_render_statement(select => @_) };
+  $self->{render}{select} = sub { shift->_render_statement(@_) };
   $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_"
     for @{$self->{clauses_of}{select}};
   $self->{clauses_of}{update} = [ qw(target set where returning) ];
   $self->{expand}{update} = sub { shift->_expand_statement(@_) };
-  $self->{render}{update} = sub { shift->_render_statement(update => @_) };
+  $self->{render}{update} = sub { shift->_render_statement(@_) };
   $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_"
     for @{$self->{clauses_of}{update}};
   $self->{expand_clause}{'update.update'} = '_expand_update_clause_target';
@@ -32,7 +32,7 @@ sub register_defaults {
   };
   $self->{clauses_of}{delete} = [ qw(target where returning) ];
   $self->{expand}{delete} = sub { shift->_expand_statement(@_) };
-  $self->{render}{delete} = sub { shift->_render_statement(delete => @_) };
+  $self->{render}{delete} = sub { shift->_render_statement(@_) };
   $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_"
     for @{$self->{clauses_of}{delete}};
   $self->{expand_clause}{"delete.from"} = '_expand_delete_clause_target';
@@ -45,7 +45,7 @@ sub register_defaults {
     'target', 'fields', 'from', 'returning'
   ];
   $self->{expand}{insert} = sub { shift->_expand_statement(@_) };
-  $self->{render}{insert} = sub { shift->_render_statement(insert => @_) };
+  $self->{render}{insert} = sub { shift->_render_statement(@_) };
   $self->{expand_clause}{'insert.into'} = '_expand_insert_clause_target';
   $self->{expand_clause}{'insert.target'} = '_expand_insert_clause_target';
   $self->{expand_clause}{'insert.fields'} = sub {
@@ -128,6 +128,10 @@ sub _expand_delete_clause_returning {
 sub _expand_statement {
   my ($self, $type, $args) = @_;
   my $ec = $self->{expand_clause};
+  if ($args->{_}) {
+    $args = { %$args };
+    $args->{$type} = delete $args->{_}
+  }
   return +{ "-${type}" => +{
     map {
       my $val = $args->{$_};
@@ -164,7 +168,7 @@ sub _render_statement {
     next unless defined($sql) and length($sql);
     push @parts, \@part;
   }
-  my ($sql, @bind) = $self->_join_parts(' ', @parts);
+  my ($sql, @bind) = $self->join_clauses(' ', @parts);
   return (
     (our $Render_Top_Level ? $sql : '('.$sql.')'),
     @bind
@@ -259,8 +263,8 @@ sub _expand_values {
 }
 
 sub _render_values {
-  my ($self, $values) = @_;
-  my ($v_sql, @bind) = $self->_join_parts(
+  my ($self, undef, $values) = @_;
+  my ($v_sql, @bind) = $self->join_clauses(
     ', ',
     map [ $self->render_aqt($_) ],
       ref($values) eq 'ARRAY' ? @$values : $values
@@ -274,23 +278,37 @@ sub _render_values {
 
 sub _ext_rw {
   my ($self, $name, $key, $value) = @_;
-  return $self->{$name}{$key} unless @_ > 2;
+  return $self->{$name}{$key} unless @_ > 3;
   $self->{$name}{$key} = $value;
   return $self;
 }
 
-sub expander { shift->_ext_rw(expand => @_) }
-sub op_expander { shift->_ext_rw(expand_op => @_) }
-sub renderer { shift->_ext_rw(render => @_) }
-sub op_renderer { shift->_ext_rw(expand_op => @_) }
-sub clause_expander { shift->_ext_rw(expand_clause => @_) }
-sub clause_renderer { shift->_ext_rw(render_clause => @_) }
+BEGIN {
+  foreach my $type (qw(
+    expand op_expand render op_render clause_expand clause_render
+  )) {
+    my $key = join '_', reverse split '_', $type;
+    my $singular = "${type}er";
+    eval qq{sub ${singular} { shift->_ext_rw($key => \@_) }; 1 }
+      or die "Method builder failed for ${type}er: $@";
+    eval qq{sub ${singular}s {
+      my (\$self, \@args) = \@_;
+      while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) {
+        \$self->{${key}}{\$this_key} = \$this_value;
+      }
+      return \$self;
+    }; 1 } or die "Method builder failed for ${singular}s: $@";
+  }
+}
 
 sub clauses_of {
   my ($self, $of, @clauses) = @_;
   unless (@clauses) {
     return @{$self->{clauses_of}{$of}||[]};
   }
+  if (ref($clauses[0]) eq 'CODE') {
+    @clauses = $self->${\($clauses[0])}(@{$self->{clauses_of}{$of}||[]});
+  }
   $self->{clauses_of}{$of} = \@clauses;
   return $self;
 }