DebugUnionType.php
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DebugUnionType.php
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	<?php

	declare(strict_types=1);

	namespace Phan\Debug;

	use Phan\Language\Type;
	use Phan\Language\UnionType;

	use const DEBUG_BACKTRACE_IGNORE_ARGS;

	/**
	* Utility for debugging assignments to a given union type.
	* This can be used when creating a union type to figure out the causes of unexpected error messages.
	*
	* Not used as part of normal phan operations.
	* @phan-file-suppress PhanPluginRemoveDebugCall
	* @suppress PhanUnreferencedClass
	*/
	class DebugUnionType extends UnionType
	{

	/**
	* Add a type name to the list of types
	* @override
	*/
	public function withType(Type $type): UnionType
	{
	\printf("%s: Adding type %s to %s", \spl_object_hash($this), (string)$type, (string)$this);
	\debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
	return parent::withType($type);
	}

	/**
	* Add the given types to this type
	*/
	public function withUnionType(UnionType $union_type): UnionType
	{
	\printf("%s: Adding union type %s to %s", \spl_object_hash($this), (string)$union_type, (string)$this);
	\debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
	return parent::withUnionType($union_type);
	}
	}