<?php
/* ============================================================================
* Copyright 2020 Zindex Software
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============================================================================ */
namespace Opis\JsonSchema\Parsers\Keywords;
use Opis\JsonSchema\Keyword;
use Opis\JsonSchema\Info\SchemaInfo;
use Opis\JsonSchema\Keywords\IfThenElseKeyword;
use Opis\JsonSchema\Parsers\{KeywordParser, SchemaParser};
class IfThenElseKeywordParser extends KeywordParser
{
protected string $then;
protected string $else;
/**
* @param string $if
* @param string $then
* @param string $else
*/
public function __construct(string $if, string $then, string $else)
{
parent::__construct($if);
$this->then = $then;
$this->else = $else;
}
/**
* @inheritDoc
*/
public function type(): string
{
return self::TYPE_AFTER;
}
/**
* @inheritDoc
*/
public function parse(SchemaInfo $info, SchemaParser $parser, object $shared): ?Keyword
{
$schema = $info->data();
if (!$this->keywordExists($schema)) {
return null;
}
$if = $this->keywordValue($schema);
if (!$this->isJsonSchema($if)) {
throw $this->keywordException("{keyword} keyword must be a json schema", $info);
}
$then = true;
if (property_exists($schema, $this->then)) {
$then = $schema->{$this->then};
}
if (!$this->isJsonSchema($then)) {
throw $this->keywordException("{keyword} keyword must be a json schema", $info, $this->then);
}
$else = true;
if (property_exists($schema, $this->else)) {
$else = $schema->{$this->else};
}
if (!$this->isJsonSchema($else)) {
throw $this->keywordException("{keyword} keyword must be a json schema", $info, $this->else);
}
if ($if === true) {
if ($then === true) {
return null;
}
$else = true;
} elseif ($if === false) {
if ($else === true) {
return null;
}
$then = true;
} elseif ($then === true && $else === true) {
return null;
}
return new IfThenElseKeyword($if, $then, $else);
}
/**
* @param $value
* @return bool
*/
protected function isJsonSchema($value): bool
{
return is_bool($value) || is_object($value);
}
}