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69 lines
2.9 KiB
C++
69 lines
2.9 KiB
C++
#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypeFactory.h>
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#include <Parsers/IAST.h>
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#include <Parsers/ASTLiteral.h>
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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 NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
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extern const int UNEXPECTED_AST_STRUCTURE;
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}
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template <typename T>
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static DataTypePtr createNumericDataType(const ASTPtr & arguments)
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{
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if (arguments)
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{
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if (std::is_integral_v<T>)
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{
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if (arguments->children.size() > 1)
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throw Exception(String(TypeName<T>::get()) + " data type family must not have more than one argument - display width", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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}
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else
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{
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if (arguments->children.size() > 2)
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throw Exception(String(TypeName<T>::get()) + " data type family must not have more than two arguments - total number of digits and number of digits following the decimal point", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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}
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}
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return std::make_shared<DataTypeNumber<T>>();
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}
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void registerDataTypeNumbers(DataTypeFactory & factory)
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{
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factory.registerSimpleDataType("UInt8", [] { return DataTypePtr(std::make_shared<DataTypeUInt8>()); });
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factory.registerSimpleDataType("UInt16", [] { return DataTypePtr(std::make_shared<DataTypeUInt16>()); });
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factory.registerSimpleDataType("UInt32", [] { return DataTypePtr(std::make_shared<DataTypeUInt32>()); });
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factory.registerSimpleDataType("UInt64", [] { return DataTypePtr(std::make_shared<DataTypeUInt64>()); });
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factory.registerDataType("Int8", createNumericDataType<Int8>);
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factory.registerDataType("Int16", createNumericDataType<Int16>);
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factory.registerDataType("Int32", createNumericDataType<Int32>);
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factory.registerDataType("Int64", createNumericDataType<Int64>);
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factory.registerDataType("Float32", createNumericDataType<Int32>);
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factory.registerDataType("Float64", createNumericDataType<Int64>);
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/// These synonyms are added for compatibility.
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factory.registerAlias("TINYINT", "Int8", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("BOOL", "Int8", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("BOOLEAN", "Int8", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("INT1", "Int8", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("SMALLINT", "Int16", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("INT2", "Int16", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("INT", "Int32", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("INT4", "Int32", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("INTEGER", "Int32", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("BIGINT", "Int64", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("FLOAT", "Float32", DataTypeFactory::CaseInsensitive);
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factory.registerAlias("DOUBLE", "Float64", DataTypeFactory::CaseInsensitive);
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}
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}
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