<?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\Info\SchemaInfo;
use Opis\JsonSchema\{Keyword, Helper};
use Opis\JsonSchema\Keywords\{EnumDataKeyword, EnumKeyword};
use Opis\JsonSchema\Parsers\{
KeywordParser, DataKeywordTrait, SchemaParser
};
class EnumKeywordParser extends KeywordParser
{
use DataKeywordTrait;
/**
* @inheritDoc
*/
public function type(): string
{
return self::TYPE_BEFORE;
}
/**
* @inheritDoc
*/
public function parse(SchemaInfo $info, SchemaParser $parser, object $shared): ?Keyword
{
$schema = $info->data();
if (!$this->keywordExists($schema)) {
return null;
}
$value = $this->keywordValue($schema);
if ($this->isDataKeywordAllowed($parser, $this->keyword)) {
if ($pointer = $this->getDataKeywordPointer($value)) {
return new EnumDataKeyword($pointer);
}
}
if (!is_array($value) || !$value) {
throw $this->keywordException("{keyword} must be a non-empty array", $info);
}
$hasConst = property_exists($schema, 'const');
$constMatched = false;
$allowedTypes = isset($shared->types) ? $shared->types : null;
$foundTypes = [];
$list = [];
foreach ($value as $item) {
$type = Helper::getJsonType($item);
if ($type === null) {
throw $this->keywordException("{keyword} contains invalid json data type", $info);
}
if ($allowedTypes && !Helper::jsonTypeMatches($type, $allowedTypes)) {
continue;
}
if ($hasConst && Helper::equals($item, $schema->const)) {
$constMatched = true;
break;
}
if (!in_array($type, $foundTypes)) {
$foundTypes[] = $type;
}
$list[] = $item;
}
if ($hasConst) {
if ($constMatched) {
return null;
}
throw $this->keywordException("{keyword} does not contain the value of const keyword", $info);
}
if ($foundTypes) {
if ($allowedTypes === null) {
$shared->types = $foundTypes;
} else {
$shared->types = array_unique(array_merge($shared->types, $foundTypes));
}
}
return new EnumKeyword($list);
}
}