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<?php
namespace exTpl;
/**
* ExpressionNode represents an expression tag: "{...}".
*/
class ExpressionNode implements Node
{
protected Expression $expr;
/**
* Initializes a new Node instance with the given expression.
*
* @param Expression $expr expression object
*/
public function __construct(Expression $expr)
{
$this->expr = $expr;
}
/**
* Returns a string representation of this node.
*
* @param Context $context symbol table
*/
public function render(Context $context): ?string
{
$value = $this->expr->value($context);
if (!($this->expr instanceof RawExpression)) {
$value = $context->escape($value);
}
return $value;
}
}
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