mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
632 lines
18 KiB
C++
632 lines
18 KiB
C++
#include <IO/ReadBuffer.h>
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#include <IO/WriteBuffer.h>
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#include <IO/ReadHelpers.h>
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#include <IO/WriteHelpers.h>
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#include <IO/ReadBufferFromString.h>
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#include <IO/readDecimalText.h>
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#include <Core/Field.h>
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#include <Core/DecimalComparison.h>
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#include <Common/FieldVisitorDump.h>
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#include <Common/FieldVisitorToString.h>
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#include <Common/FieldVisitorWriteBinary.h>
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using namespace std::literals;
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int CANNOT_RESTORE_FROM_FIELD_DUMP;
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extern const int DECIMAL_OVERFLOW;
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}
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inline Field getBinaryValue(UInt8 type, ReadBuffer & buf)
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{
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switch (static_cast<Field::Types::Which>(type))
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{
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case Field::Types::Null:
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{
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return Field();
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}
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case Field::Types::UInt64:
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{
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UInt64 value;
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readVarUInt(value, buf);
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return value;
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}
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case Field::Types::UInt128:
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{
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UInt128 value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::UInt256:
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{
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UInt256 value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::UUID:
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{
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UUID value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::IPv4:
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{
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IPv4 value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::IPv6:
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{
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IPv6 value;
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readBinary(value.toUnderType(), buf);
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return value;
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}
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case Field::Types::Int64:
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{
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Int64 value;
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readVarInt(value, buf);
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return value;
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}
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case Field::Types::Int128:
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{
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Int128 value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::Int256:
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{
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Int256 value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::Float64:
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{
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Float64 value;
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readFloatBinary(value, buf);
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return value;
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}
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case Field::Types::String:
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{
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std::string value;
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readStringBinary(value, buf);
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return value;
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}
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case Field::Types::Array:
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{
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Array value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::Tuple:
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{
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Tuple value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::Map:
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{
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Map value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::Object:
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{
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Object value;
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readBinary(value, buf);
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return value;
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}
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case Field::Types::AggregateFunctionState:
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{
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AggregateFunctionStateData value;
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readStringBinary(value.name, buf);
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readStringBinary(value.data, buf);
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return value;
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}
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case Field::Types::Bool:
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{
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UInt8 value;
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readBinary(value, buf);
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return bool(value);
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}
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case Field::Types::Decimal32:
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case Field::Types::Decimal64:
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case Field::Types::Decimal128:
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case Field::Types::Decimal256:
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case Field::Types::CustomType:
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return Field();
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}
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UNREACHABLE();
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}
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void readBinary(Array & x, ReadBuffer & buf)
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{
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size_t size;
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UInt8 type;
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readBinary(type, buf);
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readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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x.push_back(getBinaryValue(type, buf));
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}
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void writeBinary(const Array & x, WriteBuffer & buf)
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{
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UInt8 type = Field::Types::Null;
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size_t size = x.size();
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if (size)
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type = x.front().getType();
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writeBinary(type, buf);
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writeBinary(size, buf);
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for (const auto & elem : x)
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Field::dispatch([&buf] (const auto & value) { FieldVisitorWriteBinary()(value, buf); }, elem);
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}
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void writeText(const Array & x, WriteBuffer & buf)
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{
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String res = applyVisitor(FieldVisitorToString(), Field(x));
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buf.write(res.data(), res.size());
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}
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void readBinary(Tuple & x, ReadBuffer & buf)
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{
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size_t size;
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readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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{
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UInt8 type;
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readBinary(type, buf);
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x.push_back(getBinaryValue(type, buf));
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}
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}
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void writeBinary(const Tuple & x, WriteBuffer & buf)
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{
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const size_t size = x.size();
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writeBinary(size, buf);
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for (const auto & elem : x)
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{
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const UInt8 type = elem.getType();
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writeBinary(type, buf);
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Field::dispatch([&buf] (const auto & value) { FieldVisitorWriteBinary()(value, buf); }, elem);
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}
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}
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void writeText(const Tuple & x, WriteBuffer & buf)
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{
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writeFieldText(Field(x), buf);
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}
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void readBinary(Map & x, ReadBuffer & buf)
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{
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size_t size;
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readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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{
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UInt8 type;
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readBinary(type, buf);
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x.push_back(getBinaryValue(type, buf));
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}
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}
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void writeBinary(const Map & x, WriteBuffer & buf)
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{
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const size_t size = x.size();
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writeBinary(size, buf);
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for (const auto & elem : x)
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{
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const UInt8 type = elem.getType();
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writeBinary(type, buf);
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Field::dispatch([&buf] (const auto & value) { FieldVisitorWriteBinary()(value, buf); }, elem);
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}
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}
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void writeText(const Map & x, WriteBuffer & buf)
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{
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writeFieldText(Field(x), buf);
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}
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void readBinary(Object & x, ReadBuffer & buf)
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{
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size_t size;
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readBinary(size, buf);
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for (size_t index = 0; index < size; ++index)
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{
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UInt8 type;
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String key;
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readBinary(type, buf);
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readBinary(key, buf);
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x[key] = getBinaryValue(type, buf);
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}
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}
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void writeBinary(const Object & x, WriteBuffer & buf)
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{
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const size_t size = x.size();
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writeBinary(size, buf);
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for (const auto & [key, value] : x)
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{
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const UInt8 type = value.getType();
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writeBinary(type, buf);
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writeBinary(key, buf);
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Field::dispatch([&buf] (const auto & val) { FieldVisitorWriteBinary()(val, buf); }, value);
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}
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}
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void writeText(const Object & x, WriteBuffer & buf)
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{
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writeFieldText(Field(x), buf);
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}
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void writeBinary(const CustomType & x, WriteBuffer & buf)
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{
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writeBinary(std::string_view(x.getTypeName()), buf);
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writeBinary(x.toString(), buf);
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}
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void writeText(const CustomType & x, WriteBuffer & buf)
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{
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writeFieldText(Field(x), buf);
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}
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template <typename T>
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void readQuoted(DecimalField<T> & x, ReadBuffer & buf)
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{
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assertChar('\'', buf);
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T value;
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UInt32 scale;
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int32_t exponent;
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uint32_t max_digits = static_cast<uint32_t>(-1);
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readDigits<true>(buf, value, max_digits, exponent, true);
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if (exponent > 0)
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{
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scale = 0;
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if (common::mulOverflow(value.value, DecimalUtils::scaleMultiplier<T>(exponent), value.value))
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throw Exception(ErrorCodes::DECIMAL_OVERFLOW, "Decimal math overflow");
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}
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else
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scale = -exponent;
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assertChar('\'', buf);
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x = DecimalField<T>{value, scale};
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}
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template void readQuoted<Decimal32>(DecimalField<Decimal32> & x, ReadBuffer & buf);
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template void readQuoted<Decimal64>(DecimalField<Decimal64> & x, ReadBuffer & buf);
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template void readQuoted<Decimal128>(DecimalField<Decimal128> & x, ReadBuffer & buf);
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template void readQuoted<Decimal256>(DecimalField<Decimal256> & x, ReadBuffer & buf);
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void writeFieldText(const Field & x, WriteBuffer & buf)
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{
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String res = Field::dispatch(FieldVisitorToString(), x);
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buf.write(res.data(), res.size());
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}
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String Field::dump() const
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{
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return applyVisitor(FieldVisitorDump(), *this);
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}
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Field Field::restoreFromDump(std::string_view dump_)
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{
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auto show_error = [&dump_]
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{
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throw Exception(ErrorCodes::CANNOT_RESTORE_FROM_FIELD_DUMP, "Couldn't restore Field from dump: {}", String{dump_});
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};
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std::string_view dump = dump_;
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trim(dump);
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if (dump == "NULL")
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return {};
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std::string_view prefix = std::string_view{"Int64_"};
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if (dump.starts_with(prefix))
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{
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Int64 value = parseFromString<Int64>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"UInt64_"};
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if (dump.starts_with(prefix))
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{
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UInt64 value = parseFromString<UInt64>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"Int128_"};
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if (dump.starts_with(prefix))
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{
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Int128 value = parseFromString<Int128>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"UInt128_"};
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if (dump.starts_with(prefix))
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{
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UInt128 value = parseFromString<UInt128>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"Int256_"};
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if (dump.starts_with(prefix))
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{
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Int256 value = parseFromString<Int256>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"UInt256_"};
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if (dump.starts_with(prefix))
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{
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UInt256 value = parseFromString<UInt256>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"Float64_"};
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if (dump.starts_with(prefix))
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{
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Float64 value = parseFromString<Float64>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"Decimal32_"};
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if (dump_.starts_with(prefix))
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{
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DecimalField<Decimal32> decimal;
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ReadBufferFromString buf{dump.substr(prefix.length())};
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readQuoted(decimal, buf);
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return decimal;
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}
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prefix = std::string_view{"Decimal64_"};
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if (dump_.starts_with(prefix))
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{
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DecimalField<Decimal64> decimal;
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ReadBufferFromString buf{dump.substr(prefix.length())};
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readQuoted(decimal, buf);
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return decimal;
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}
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prefix = std::string_view{"Decimal128_"};
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if (dump_.starts_with(prefix))
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{
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DecimalField<Decimal128> decimal;
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ReadBufferFromString buf{dump.substr(prefix.length())};
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readQuoted(decimal, buf);
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return decimal;
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}
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prefix = std::string_view{"Decimal256_"};
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if (dump_.starts_with(prefix))
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{
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DecimalField<Decimal256> decimal;
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ReadBufferFromString buf{dump.substr(prefix.length())};
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readQuoted(decimal, buf);
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return decimal;
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}
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if (dump.starts_with("\'"))
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{
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String str;
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ReadBufferFromString buf{dump};
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readQuoted(str, buf);
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return str;
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}
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prefix = std::string_view{"Bool_"};
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if (dump.starts_with(prefix))
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{
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bool value = parseFromString<bool>(dump.substr(prefix.length()));
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return value;
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}
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prefix = std::string_view{"Array_["};
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if (dump.starts_with(prefix))
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{
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std::string_view tail = dump.substr(prefix.length());
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trimLeft(tail);
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Array array;
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while (tail != "]")
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{
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size_t separator = tail.find_first_of(",]");
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if (separator == std::string_view::npos)
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show_error();
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bool comma = (tail[separator] == ',');
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std::string_view element = tail.substr(0, separator);
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tail.remove_prefix(separator);
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if (comma)
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tail.remove_prefix(1);
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trimLeft(tail);
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if (!comma && tail != "]")
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show_error();
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array.push_back(Field::restoreFromDump(element));
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}
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return array;
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}
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prefix = std::string_view{"Tuple_("};
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if (dump.starts_with(prefix))
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{
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std::string_view tail = dump.substr(prefix.length());
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trimLeft(tail);
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Tuple tuple;
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while (tail != ")")
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{
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size_t separator = tail.find_first_of(",)");
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if (separator == std::string_view::npos)
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show_error();
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bool comma = (tail[separator] == ',');
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std::string_view element = tail.substr(0, separator);
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tail.remove_prefix(separator);
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if (comma)
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tail.remove_prefix(1);
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trimLeft(tail);
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if (!comma && tail != ")")
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show_error();
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tuple.push_back(Field::restoreFromDump(element));
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}
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return tuple;
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}
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prefix = std::string_view{"Map_("};
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if (dump.starts_with(prefix))
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{
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std::string_view tail = dump.substr(prefix.length());
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trimLeft(tail);
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Map map;
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while (tail != ")")
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{
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size_t separator = tail.find_first_of(",)");
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if (separator == std::string_view::npos)
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show_error();
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bool comma = (tail[separator] == ',');
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std::string_view element = tail.substr(0, separator);
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tail.remove_prefix(separator);
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if (comma)
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tail.remove_prefix(1);
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trimLeft(tail);
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if (!comma && tail != ")")
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show_error();
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map.push_back(Field::restoreFromDump(element));
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}
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return map;
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}
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prefix = std::string_view{"AggregateFunctionState_("};
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if (dump.starts_with(prefix))
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{
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std::string_view after_prefix = dump.substr(prefix.length());
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size_t comma = after_prefix.find(',');
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size_t end = after_prefix.find(')', comma + 1);
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if ((comma == std::string_view::npos) || (end != after_prefix.length() - 1))
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show_error();
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std::string_view name_view = after_prefix.substr(0, comma);
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std::string_view data_view = after_prefix.substr(comma + 1, end - comma - 1);
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trim(name_view);
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trim(data_view);
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ReadBufferFromString name_buf{name_view};
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ReadBufferFromString data_buf{data_view};
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AggregateFunctionStateData res;
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readQuotedString(res.name, name_buf);
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readQuotedString(res.data, data_buf);
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return res;
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}
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show_error();
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UNREACHABLE();
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}
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template <typename T>
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bool decimalEqual(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, EqualsOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template <typename T>
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bool decimalLess(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, LessOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template <typename T>
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bool decimalLessOrEqual(T x, T y, UInt32 x_scale, UInt32 y_scale)
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{
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using Comparator = DecimalComparison<T, T, LessOrEqualsOp>;
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return Comparator::compare(x, y, x_scale, y_scale);
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}
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template bool decimalEqual<Decimal32>(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalEqual<Decimal64>(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalEqual<Decimal128>(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalEqual<Decimal256>(Decimal256 x, Decimal256 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalEqual<DateTime64>(DateTime64 x, DateTime64 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalLess<Decimal32>(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalLess<Decimal64>(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale);
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template bool decimalLess<Decimal128>(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLess<Decimal256>(Decimal256 x, Decimal256 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLess<DateTime64>(DateTime64 x, DateTime64 y, UInt32 x_scale, UInt32 y_scale);
|
|
|
|
template bool decimalLessOrEqual<Decimal32>(Decimal32 x, Decimal32 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLessOrEqual<Decimal64>(Decimal64 x, Decimal64 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLessOrEqual<Decimal128>(Decimal128 x, Decimal128 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLessOrEqual<Decimal256>(Decimal256 x, Decimal256 y, UInt32 x_scale, UInt32 y_scale);
|
|
template bool decimalLessOrEqual<DateTime64>(DateTime64 x, DateTime64 y, UInt32 x_scale, UInt32 y_scale);
|
|
|
|
|
|
inline void writeText(const Null & x, WriteBuffer & buf)
|
|
{
|
|
if (x.isNegativeInfinity())
|
|
writeText("-Inf", buf);
|
|
if (x.isPositiveInfinity())
|
|
writeText("+Inf", buf);
|
|
else
|
|
writeText("NULL", buf);
|
|
}
|
|
|
|
String toString(const Field & x)
|
|
{
|
|
return Field::dispatch(
|
|
[] (const auto & value)
|
|
{
|
|
// Use explicit type to prevent implicit construction of Field and
|
|
// infinite recursion into toString<Field>.
|
|
return toString<decltype(value)>(value);
|
|
},
|
|
x);
|
|
}
|
|
|
|
std::string_view fieldTypeToString(Field::Types::Which type)
|
|
{
|
|
switch (type)
|
|
{
|
|
case Field::Types::Which::Null: return "Null"sv;
|
|
case Field::Types::Which::Array: return "Array"sv;
|
|
case Field::Types::Which::Tuple: return "Tuple"sv;
|
|
case Field::Types::Which::Map: return "Map"sv;
|
|
case Field::Types::Which::Object: return "Object"sv;
|
|
case Field::Types::Which::AggregateFunctionState: return "AggregateFunctionState"sv;
|
|
case Field::Types::Which::Bool: return "Bool"sv;
|
|
case Field::Types::Which::String: return "String"sv;
|
|
case Field::Types::Which::Decimal32: return "Decimal32"sv;
|
|
case Field::Types::Which::Decimal64: return "Decimal64"sv;
|
|
case Field::Types::Which::Decimal128: return "Decimal128"sv;
|
|
case Field::Types::Which::Decimal256: return "Decimal256"sv;
|
|
case Field::Types::Which::Float64: return "Float64"sv;
|
|
case Field::Types::Which::Int64: return "Int64"sv;
|
|
case Field::Types::Which::Int128: return "Int128"sv;
|
|
case Field::Types::Which::Int256: return "Int256"sv;
|
|
case Field::Types::Which::UInt64: return "UInt64"sv;
|
|
case Field::Types::Which::UInt128: return "UInt128"sv;
|
|
case Field::Types::Which::UInt256: return "UInt256"sv;
|
|
case Field::Types::Which::UUID: return "UUID"sv;
|
|
case Field::Types::Which::IPv4: return "IPv4"sv;
|
|
case Field::Types::Which::IPv6: return "IPv6"sv;
|
|
case Field::Types::Which::CustomType: return "CustomType"sv;
|
|
}
|
|
}
|
|
|
|
/// Keep in mind, that "magic_enum" is very expensive for compiler, that's why we don't use it.
|
|
std::string_view Field::getTypeName() const
|
|
{
|
|
return fieldTypeToString(which);
|
|
}
|
|
|
|
|
|
}
|