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Unindent contents of anonymous namespace
This commit is contained in:
Francisco Javier Jurado Moreno
parent
6d710d06a6
commit
6db2a42d19
@ -23,216 +23,216 @@ namespace ErrorCodes
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namespace
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{
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const std::unordered_map<std::string_view, UInt64> size_unit_to_bytes =
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const std::unordered_map<std::string_view, UInt64> size_unit_to_bytes =
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{
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{"b", 1},
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// ISO/IEC 80000-13 binary units
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{"kib", 1024}, // 1024
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{"mib", 1048576}, // 1024 * 1024
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{"gib", 1073741824}, // 1024 * 1024 * 1024
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{"tib", 1099511627776}, // 1024 * 1024 * 1024 * 1024
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{"pib", 1125899906842624}, // 1024 * 1024 * 1024 * 1024 * 1024
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{"eib", 1152921504606846976}, // 1024 * 1024 * 1024 * 1024 * 1024 * 1024
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// SI units
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{"kb", 1000}, // 10e3
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{"mb", 1000000}, // 10e6
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{"gb", 1000000000}, // 10e9
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{"tb", 1000000000000}, // 10e12
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{"pb", 1000000000000000}, // 10e15
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{"eb", 1000000000000000000}, // 10e18
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};
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constexpr UInt64 MAX_UINT64 = std::numeric_limits<UInt64>::max();
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class FunctionFromReadableSize : public IFunction
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{
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public:
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static constexpr auto name = "fromReadableSize";
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static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionFromReadableSize>(); }
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String getName() const override { return name; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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size_t getNumberOfArguments() const override { return 1; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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{"b", 1},
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// ISO/IEC 80000-13 binary units
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{"kib", 1024}, // 1024
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{"mib", 1048576}, // 1024 * 1024
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{"gib", 1073741824}, // 1024 * 1024 * 1024
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{"tib", 1099511627776}, // 1024 * 1024 * 1024 * 1024
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{"pib", 1125899906842624}, // 1024 * 1024 * 1024 * 1024 * 1024
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{"eib", 1152921504606846976}, // 1024 * 1024 * 1024 * 1024 * 1024 * 1024
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if (arguments.empty())
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throw Exception(
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ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION,
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"Number of arguments for function {} doesn't match: passed {}, should be 1.",
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getName(),
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arguments.size());
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// SI units
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{"kb", 1000}, // 10e3
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{"mb", 1000000}, // 10e6
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{"gb", 1000000000}, // 10e9
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{"tb", 1000000000000}, // 10e12
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{"pb", 1000000000000000}, // 10e15
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{"eb", 1000000000000000000}, // 10e18
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};
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constexpr UInt64 MAX_UINT64 = std::numeric_limits<UInt64>::max();
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if (arguments.size() > 1)
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throw Exception(
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ErrorCodes::TOO_MANY_ARGUMENTS_FOR_FUNCTION,
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"Number of arguments for function {} doesn't match: passed {}, should be 1.",
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getName(),
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arguments.size());
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class FunctionFromReadableSize : public IFunction
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const IDataType & type = *arguments[0];
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if (!isString(type))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Cannot format {} as time string.", type.getName());
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return std::make_shared<DataTypeUInt64>();
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}
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bool useDefaultImplementationForConstants() const override { return true; }
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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public:
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static constexpr auto name = "fromReadableSize";
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static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionFromReadableSize>(); }
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auto col_to = ColumnUInt64::create();
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auto & res_data = col_to->getData();
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String getName() const override { return name; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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size_t getNumberOfArguments() const override { return 1; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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for (size_t i = 0; i < input_rows_count; ++i)
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{
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if (arguments.empty())
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throw Exception(
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ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION,
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"Number of arguments for function {} doesn't match: passed {}, should be 1.",
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getName(),
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arguments.size());
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std::string_view str{arguments[0].column->getDataAt(i)};
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Int64 token_tail = 0;
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Int64 token_front = 0;
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Int64 last_pos = str.length() - 1;
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UInt64 result = 0;
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if (arguments.size() > 1)
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throw Exception(
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ErrorCodes::TOO_MANY_ARGUMENTS_FOR_FUNCTION,
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"Number of arguments for function {} doesn't match: passed {}, should be 1.",
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getName(),
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arguments.size());
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/// ignore '.' and ' ' at the end of string
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while (last_pos >= 0 && (str[last_pos] == ' ' || str[last_pos] == '.'))
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--last_pos;
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const IDataType & type = *arguments[0];
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if (!isString(type))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Cannot format {} as time string.", type.getName());
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return std::make_shared<DataTypeUInt64>();
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}
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bool useDefaultImplementationForConstants() const override { return true; }
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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auto col_to = ColumnUInt64::create();
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auto & res_data = col_to->getData();
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for (size_t i = 0; i < input_rows_count; ++i)
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/// no valid characters
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if (last_pos < 0)
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{
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std::string_view str{arguments[0].column->getDataAt(i)};
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Int64 token_tail = 0;
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Int64 token_front = 0;
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Int64 last_pos = str.length() - 1;
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UInt64 result = 0;
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, don't find valid characters, str: \"{}\".",
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getName(),
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String(str));
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}
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/// ignore '.' and ' ' at the end of string
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while (last_pos >= 0 && (str[last_pos] == ' ' || str[last_pos] == '.'))
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--last_pos;
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/// last pos character must be character and not be separator or number after ignoring '.' and ' '
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if (!isalpha(str[last_pos]))
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{
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Invalid expression for function {}, str: \"{}\".", getName(), String(str));
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}
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/// no valid characters
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if (last_pos < 0)
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, don't find valid characters, str: \"{}\".",
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getName(),
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String(str));
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}
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/// scan spaces at the beginning
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scanSpaces(str, token_tail, last_pos);
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token_front = token_tail;
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/// scan unsigned integer
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if (!scanUnsignedInteger(str, token_tail, last_pos))
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, find number failed, str: \"{}\".",
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getName(),
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String(str));
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}
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/// last pos character must be character and not be separator or number after ignoring '.' and ' '
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if (!isalpha(str[last_pos]))
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{
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Invalid expression for function {}, str: \"{}\".", getName(), String(str));
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}
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/// scan spaces at the beginning
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scanSpaces(str, token_tail, last_pos);
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token_front = token_tail;
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/// scan unsigned integer
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/// if there is a '.', then scan another integer to get a float number
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if (token_tail <= last_pos && str[token_tail] == '.')
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{
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token_tail++;
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if (!scanUnsignedInteger(str, token_tail, last_pos))
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, find number failed, str: \"{}\".",
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"Invalid expression for function {}, find number after '.' failed, str: \"{}\".",
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getName(),
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String(str));
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}
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/// if there is a '.', then scan another integer to get a float number
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if (token_tail <= last_pos && str[token_tail] == '.')
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{
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token_tail++;
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if (!scanUnsignedInteger(str, token_tail, last_pos))
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, find number after '.' failed, str: \"{}\".",
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getName(),
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String(str));
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}
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}
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/// convert float/integer string to float
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Float64 base = 0;
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std::string_view base_str = str.substr(token_front, token_tail - token_front);
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auto value = boost::convert<Float64>(base_str, boost::cnv::strtol());
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if (!value.has_value())
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, convert string to float64 failed: \"{}\".",
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getName(),
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String(base_str));
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}
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base = value.get();
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scanSpaces(str, token_tail, last_pos);
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token_front = token_tail;
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/// scan a unit
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if (!scanUnit(str, token_tail, last_pos))
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, find unit failed, str: \"{}\".",
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getName(),
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String(str));
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}
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std::string unit = std::string{str.substr(token_front, token_tail - token_front)};
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boost::algorithm::to_lower(unit);
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auto iter = size_unit_to_bytes.find(unit);
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if (iter == size_unit_to_bytes.end()) /// not find unit
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS, "Invalid expression for function {}, parse unit failed: \"{}\".", getName(), unit);
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}
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Float64 raw_num_bytes = base * iter->second;
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if (raw_num_bytes > MAX_UINT64)
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, result is too big for output data type (UInt64): \"{}\".",
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getName(),
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raw_num_bytes
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);
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}
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// As the input might be an arbitrary decimal number we might end up with a non-integer amount of bytes when parsing binary (eg MiB) units.
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// This doesn't make sense so we round up to indicate the byte size that can fit the passed size.
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result = static_cast<UInt64>(std::ceil(raw_num_bytes));
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res_data.emplace_back(result);
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}
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return col_to;
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}
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/// scan an unsigned integer number
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static bool scanUnsignedInteger(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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int64_t begin_index = index;
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while (index <= last_pos && isdigit(str[index]))
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/// convert float/integer string to float
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Float64 base = 0;
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std::string_view base_str = str.substr(token_front, token_tail - token_front);
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auto value = boost::convert<Float64>(base_str, boost::cnv::strtol());
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if (!value.has_value())
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{
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index++;
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, convert string to float64 failed: \"{}\".",
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getName(),
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String(base_str));
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}
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return index != begin_index;
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}
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base = value.get();
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/// scan a unit
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static bool scanUnit(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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int64_t begin_index = index;
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while (index <= last_pos && !isdigit(str[index]) && !isSeparator(str[index]))
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scanSpaces(str, token_tail, last_pos);
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token_front = token_tail;
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/// scan a unit
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if (!scanUnit(str, token_tail, last_pos))
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{
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index++;
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, find unit failed, str: \"{}\".",
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getName(),
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String(str));
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}
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return index != begin_index;
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}
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/// scan spaces
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static void scanSpaces(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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while (index <= last_pos && (str[index] == ' '))
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std::string unit = std::string{str.substr(token_front, token_tail - token_front)};
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boost::algorithm::to_lower(unit);
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auto iter = size_unit_to_bytes.find(unit);
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if (iter == size_unit_to_bytes.end()) /// not find unit
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{
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index++;
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS, "Invalid expression for function {}, parse unit failed: \"{}\".", getName(), unit);
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}
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Float64 raw_num_bytes = base * iter->second;
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if (raw_num_bytes > MAX_UINT64)
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{
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Invalid expression for function {}, result is too big for output data type (UInt64): \"{}\".",
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getName(),
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raw_num_bytes
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);
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}
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// As the input might be an arbitrary decimal number we might end up with a non-integer amount of bytes when parsing binary (eg MiB) units.
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// This doesn't make sense so we round up to indicate the byte size that can fit the passed size.
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result = static_cast<UInt64>(std::ceil(raw_num_bytes));
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res_data.emplace_back(result);
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}
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static bool isSeparator(char symbol)
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return col_to;
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}
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/// scan an unsigned integer number
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static bool scanUnsignedInteger(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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int64_t begin_index = index;
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while (index <= last_pos && isdigit(str[index]))
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{
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return symbol == ';' || symbol == '-' || symbol == '+' || symbol == ',' || symbol == ':' || symbol == ' ';
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index++;
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}
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};
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return index != begin_index;
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}
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/// scan a unit
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static bool scanUnit(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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int64_t begin_index = index;
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while (index <= last_pos && !isdigit(str[index]) && !isSeparator(str[index]))
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{
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index++;
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}
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return index != begin_index;
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}
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/// scan spaces
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static void scanSpaces(std::string_view & str, Int64 & index, Int64 last_pos)
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{
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while (index <= last_pos && (str[index] == ' '))
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{
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index++;
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}
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}
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static bool isSeparator(char symbol)
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{
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return symbol == ';' || symbol == '-' || symbol == '+' || symbol == ',' || symbol == ':' || symbol == ' ';
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}
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};
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}
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