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#pragma once
#include "clickhouse_config.h"
#include <Common/ErrorCodes.h>
#include <Common/Exception.h>
#include <base/types.h>
#include <Poco/DOM/Document.h>
#include <Poco/DOM/AutoPtr.h>
#if USE_YAML_CPP
namespace DB
{
/// Real YAML parser: loads yaml file into a YAML::Node
class YAMLParserImpl
{
public:
static Poco::AutoPtr<Poco::XML::Document> parse(const String& path);
};
using YAMLParser = YAMLParserImpl;
}
#else
namespace DB
{
namespace ErrorCodes
{
extern const int CANNOT_PARSE_YAML;
}
/// Fake YAML parser: throws an exception if we try to parse YAML configs in a build without yaml-cpp
class DummyYAMLParser
{
public:
static Poco::AutoPtr<Poco::XML::Document> parse(const String& path)
{
Poco::AutoPtr<Poco::XML::Document> xml = new Poco::XML::Document;
throw Exception(ErrorCodes::CANNOT_PARSE_YAML, "Unable to parse YAML configuration file {} without usage of yaml-cpp library", path);
return xml;
}
};
using YAMLParser = DummyYAMLParser;
}
#endif
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