<?php
namespace Aws\Api;
/**
* Builds shape based on shape references.
*/
class ShapeMap
{
/** @var array */
private $definitions;
/** @var Shape[] */
private $simple;
/**
* @param array $shapeModels Associative array of shape definitions.
*/
public function __construct(array $shapeModels)
{
$this->definitions = $shapeModels;
}
/**
* Get an array of shape names.
*
* @return array
*/
public function getShapeNames()
{
return array_keys($this->definitions);
}
/**
* Resolve a shape reference
*
* @param array $shapeRef Shape reference shape
*
* @return Shape
* @throws \InvalidArgumentException
*/
public function resolve(array $shapeRef)
{
$shape = $shapeRef['shape'];
if (!isset($this->definitions[$shape])) {
throw new \InvalidArgumentException('Shape not found: ' . $shape);
}
$isSimple = count($shapeRef) == 1;
if ($isSimple && isset($this->simple[$shape])) {
return $this->simple[$shape];
}
$definition = $shapeRef + $this->definitions[$shape];
$definition['name'] = $definition['shape'];
unset($definition['shape']);
$result = Shape::create($definition, $this);
if ($isSimple) {
$this->simple[$shape] = $result;
}
return $result;
}
}
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