ClickHouse/src/Functions/visitParamExtractBool.cpp

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#include <Functions/FunctionFactory.h>
#include <Functions/FunctionsVisitParam.h>
#include <Functions/FunctionsStringSearch.h>
namespace DB
{
struct ExtractBool
{
using ResultType = UInt8;
static UInt8 extract(const UInt8 * begin, const UInt8 * end)
{
return begin + 4 <= end && 0 == strncmp(reinterpret_cast<const char *>(begin), "true", 4);
}
};
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struct NameSimpleJSONExtractBool { static constexpr auto name = "simpleJSONExtractBool"; };
using FunctionSimpleJSONExtractBool = FunctionsStringSearch<ExtractParamImpl<NameSimpleJSONExtractBool, ExtractBool>>;
REGISTER_FUNCTION(VisitParamExtractBool)
{
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factory.registerFunction<FunctionSimpleJSONExtractBool>();
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factory.registerAlias("visitParamExtractBool", "simpleJSONExtractBool");
}
}