<?php

/**

 * Double quoted string inside a tag.

 *

 * @package    Smarty

 * @subpackage Compiler

 * @ignore

 */

/**

 * Double quoted string inside a tag.

 *

 * @package    Smarty

 * @subpackage Compiler

 * @ignore

 */

class Smarty_Internal_ParseTree_Dq extends Smarty_Internal_ParseTree {

    /**

     * Create parse tree buffer for double quoted string subtrees

     *

     * @param object $parser parser object

     * @param Smarty_Internal_ParseTree $subtree parse tree buffer

     */

    public function __construct($parser, Smarty_Internal_ParseTree $subtree) {

        $this->parser = $parser;

        $this->subtrees[] = $subtree;

        if ($subtree instanceof Smarty_Internal_ParseTree_Tag) {

            $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);

        }

    }

    /**

     * Append buffer to subtree

     *

     * @param Smarty_Internal_ParseTree $subtree parse tree buffer

     */

    public function append_subtree(Smarty_Internal_ParseTree $subtree) {

        $last_subtree = count($this->subtrees) - 1;

        if ($last_subtree >= 0 && $this->subtrees[$last_subtree] instanceof Smarty_Internal_ParseTree_Tag && $this->subtrees[$last_subtree]->saved_block_nesting < $this->parser->block_nesting_level) {

            if ($subtree instanceof Smarty_Internal_ParseTree_Code) {

                $this->subtrees[$last_subtree]->data = $this->parser->compiler->appendCode($this->subtrees[$last_subtree]->data, '<?php echo ' . $subtree->data . ';?>');

            } elseif ($subtree instanceof Smarty_Internal_ParseTree_DqContent) {

                $this->subtrees[$last_subtree]->data = $this->parser->compiler->appendCode($this->subtrees[$last_subtree]->data, '<?php echo "' . $subtree->data . '";?>');

            } else {

                $this->subtrees[$last_subtree]->data = $this->parser->compiler->appendCode($this->subtrees[$last_subtree]->data, $subtree->data);

            }

        } else {

            $this->subtrees[] = $subtree;

        }

        if ($subtree instanceof Smarty_Internal_ParseTree_Tag) {

            $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);

        }

    }

    /**

     * Merge subtree buffer content together

     *

     * @return string compiled template code

     */

    public function to_smarty_php() {

        $code = '';

        foreach ($this->subtrees as $subtree) {

            if ($code !== "") {

                $code .= ".";

            }

            if ($subtree instanceof Smarty_Internal_ParseTree_Tag) {

                $more_php = $subtree->assign_to_var();

            } else {

                $more_php = $subtree->to_smarty_php();

            }

            $code .= $more_php;

            if (!$subtree instanceof Smarty_Internal_ParseTree_DqContent) {

                $this->parser->compiler->has_variable_string = true;

            }

        }

        return $code;

    }

}