From: Uri Guttman <uri@cpan.org>
Date: Sun, 14 Dec 2008 07:08:06 +0000 (-0500)
Subject: added compiled loop support
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=urisagit%2FTemplate-Simple.git;a=commitdiff_plain;h=7dd120001373ca771b4baf231269e2296a908ce1

added compiled loop support
added compile scalar vs hash data support
needs testing and benchmarking
---

diff --git a/lib/Template/Simple.pm b/lib/Template/Simple.pm
index 1b603d0..d4804ba 100644
--- a/lib/Template/Simple.pm
+++ b/lib/Template/Simple.pm
@@ -115,8 +115,7 @@ no warnings ;
 sub {
 	my( \$data ) = \@_ ;
 
-	my \$out =
-	$code_body ;
+	my \$out = $code_body ;
 
 	return \\\$out ;
 }
@@ -139,24 +138,22 @@ sub _compile_chunk {
 
 	return '' unless length $template ;
 
-	$indent .= "\t" ;
-
 	my @parts ;
 
 # loop all nested chunks and the text separating them
 
 	while( $template =~ m{$self->{chunk_re}}g ) {
 
-# grab the pre-chunk text and compile it for scalars and save all of its parts
+# grab the pre-match text and compile its scalars and save all of its parts
 
 		push @parts, $self->_compile_scalars(
 				substr( $template, 0, $-[0] ) ) ;
 
 # compile the nested chunk and save its parts
 
-		push @parts, $self->_compile_chunk( $1, $2, $indent ) ;
+		push @parts, $self->_compile_chunk( $1, $2, "$indent\t\t" ) ;
 
-# chop off the pre-chunk and chunk
+# chop off the pre-match and the chunk
 
 		substr( $template, 0, $+[0], '' ) ;
 	}
@@ -169,24 +166,46 @@ sub _compile_chunk {
 
 # start it with a do{} block open
 
-	my $code = "do {\n$indent" ;
+	my $code = <<CODE ;
+do {
+CODE
+
+	$indent .= "\t" ;
 
 # generate a lookup in data for this chunk name (unless it is the top
 # level). this descends down the data tree during rendering
 
-	$code .= <<CODE . $indent if $chunk_name ;
-my \$data = \$data->{$chunk_name} ;
+	$code .= <<CODE if $chunk_name ;
+${indent}my \$data = \$data->{$chunk_name} ;
+CODE
+
+# add the loop code to handle a scalar or an array
+
+	$code .= <<CODE ;
+${indent}my \$out ;
+${indent}foreach my \$data ( ref \$data eq 'ARRAY' ? \@{\$data} : \$data ) {
+
+	${indent}\$out .= ref \$data ne 'HASH' ? \$data :
 CODE
 
+	$indent .= "\t" ;
+
 # now generate the code to output all the parts of this chunk. they
 # are all concatentated by the . operator
 
-	$code .= join( "\n$indent.\n$indent", @parts ) ;
+	$code .= $indent . join( "\n$indent.\n$indent", @parts ) ;
 
-# now we close the do block
+	chop $indent ;
+
+# now we end the .= statement, the loop and the do block for this chunk
+	$code .= <<CODE ;
+ ;
+$indent}
+$indent\$out ;
+CODE
 
 	chop $indent ;
-	$code .= "\n$indent}" ;
+	$code .= "$indent}" ;
 
 	return $code ;
 }
@@ -241,22 +260,25 @@ sub render {
 
 	my( $self, $template_name, $data ) = @_ ;
 
-# render with cached code if we precompiled this template
+	my $tmpl_ref = ref $template_name eq 'SCALAR' ? $template_name : '' ;
 
-	if ( my $compiled = $self->{compiled_cache}{$template_name} ) {
+	unless( $tmpl_ref ) {
 
-		return $compiled->($data) ;
-	}
+# render with cached code and return if we precompiled this template
+
+		if ( my $compiled = $self->{compiled_cache}{$template_name} ) {
 
-# TODO: look for template by name 
+			return $compiled->($data) ;
+		}
 
-	my $template = eval{ $self->_get_template($1) } ;
+# not compiled so get this template by name
 
-print "GOT [$template]\n" ;
+		$tmpl_ref ||= eval{ $self->_get_template($template_name) } ;
 
-# force the template into a ref
+# we couldn't find this template name so assume it is the template text
 
-	my $tmpl_ref = ref $template eq 'SCALAR' ? $template : \$template ;
+		$tmpl_ref ||= \$template_name ;
+	}
 
 	my $rendered = $self->_render_includes( $tmpl_ref ) ;