<?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\{ConstDataKeyword, ConstKeyword};
use Opis\JsonSchema\Parsers\{
KeywordParser, DataKeywordTrait, SchemaParser
};
class ConstKeywordParser 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 ConstDataKeyword($pointer);
}
}
$type = Helper::getJsonType($value);
if ($type === null) {
throw $this->keywordException("{keyword} contains unknown json data type", $info);
}
if (isset($shared->types)) {
if (!Helper::jsonTypeMatches($type, $shared->types)) {
throw $this->keywordException("{keyword} contains a value that doesn't match the type keyword", $info);
}
} else {
$shared->types = [$type];
}
return new ConstKeyword($value);
}
}