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<?php
namespace exTpl;
/**
* FunctionExpression represents a function call.
*/
class FunctionExpression implements Expression
{
protected Expression $name;
protected array $arguments;
/**
* Initializes a new Expression instance.
*
* @param Expression $name function name
* @param array $arguments function arguments
*/
public function __construct(Expression $name, array $arguments)
{
$this->name = $name;
$this->arguments = $arguments;
}
/**
* Returns the value of this expression.
*
* @param Context $context symbol table
*/
public function value(Context $context): mixed
{
$callable = $this->name->value($context);
$arguments = [];
foreach ($this->arguments as $expr) {
$arguments[] = $expr->value($context);
}
if (is_callable($callable)) {
return $callable(...$arguments);
}
return null;
}
}
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