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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ExpressionLanguage;
/**
* Compiles a node to PHP code.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Compiler
{
private $source;
private $functions;
public function __construct(array $functions)
{
$this->functions = $functions;
}
public function getFunction($name)
{
return $this->functions[$name];
}
/**
* Gets the current PHP code after compilation.
*
* @return string The PHP code
*/
public function getSource()
{
return $this->source;
}
public function reset()
{
$this->source = '';
return $this;
}
/**
* Compiles a node.
*
* @return $this
*/
public function compile(Node\Node $node)
{
$node->compile($this);
return $this;
}
public function subcompile(Node\Node $node)
{
$current = $this->source;
$this->source = '';
$node->compile($this);
$source = $this->source;
$this->source = $current;
return $source;
}
/**
* Adds a raw string to the compiled code.
*
* @param string $string The string
*
* @return $this
*/
public function raw($string)
{
$this->source .= $string;
return $this;
}
/**
* Adds a quoted string to the compiled code.
*
* @param string $value The string
*
* @return $this
*/
public function string($value)
{
$this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));
return $this;
}
/**
* Returns a PHP representation of a given value.
*
* @param mixed $value The value to convert
*
* @return $this
*/
public function repr($value)
{
if (is_int($value) || is_float($value)) {
if (false !== $locale = setlocale(LC_NUMERIC, 0)) {
setlocale(LC_NUMERIC, 'C');
}
$this->raw($value);
if (false !== $locale) {
setlocale(LC_NUMERIC, $locale);
}
} elseif (null === $value) {
$this->raw('null');
} elseif (is_bool($value)) {
$this->raw($value ? 'true' : 'false');
} elseif (is_array($value)) {
$this->raw('array(');
$first = true;
foreach ($value as $key => $value) {
if (!$first) {
$this->raw(', ');
}
$first = false;
$this->repr($key);
$this->raw(' => ');
$this->repr($value);
}
$this->raw(')');
} else {
$this->string($value);
}
return $this;
}
}
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