Enum DataType 

pub enum DataType {
    Bool,
    Char,
    Int8,
    Int16,
    Int32,
    Int64,
    Int128,
    UInt8,
    UInt16,
    UInt32,
    UInt64,
    UInt128,
    Float32,
    Float64,
    String,
    Date,
    Time,
    DateTime,
    Instant,
    BigInteger,
    BigDecimal,
    IntSize,
    UIntSize,
    Duration,
    Url,
    StringMap,
    Json,
}

Universal data type enumeration for cross-module type representation

Defines all basic data types and composite types supported by the system. This enum provides a unified way to represent and work with different data types across various modules and components.

DataType serves as a bridge between Rust’s type system and runtime type information, enabling dynamic type handling, serialization, validation, and other type-aware operations.

Features

• Comprehensive Coverage: Supports all basic Rust types plus common third-party types
• String Representation: Each variant has a consistent string representation
• Serialization Support: Implements Serialize and Deserialize for JSON/YAML support
• Type Mapping: Works with DataTypeOf trait for compile-time type mapping

Use Cases

• Dynamic Type Handling: Runtime type checking and conversion
• Serialization/Deserialization: Type-aware data format conversion
• Validation Systems: Type-based input validation
• Generic Programming: Type-safe generic operations
• API Documentation: Automatic type information generation

Examples

Basic Usage

use qubit_common::lang::DataType;

let data_type = DataType::Int32;
assert_eq!(data_type.to_string(), "int32");
assert_eq!(data_type.as_str(), "int32");

Type Checking

use qubit_common::lang::DataType;

fn is_numeric(data_type: DataType) -> bool {
    matches!(data_type,
        DataType::Int8 | DataType::Int16 | DataType::Int32 | DataType::Int64 | DataType::Int128 |
        DataType::UInt8 | DataType::UInt16 | DataType::UInt32 | DataType::UInt64 | DataType::UInt128 |
        DataType::Float32 | DataType::Float64 | DataType::BigInteger | DataType::BigDecimal
    )
}

assert!(is_numeric(DataType::Int32));
assert!(!is_numeric(DataType::String));

Serialization

use qubit_common::lang::DataType;
use serde_json;

let data_type = DataType::Float64;
let json = serde_json::to_string(&data_type).unwrap();
assert_eq!(json, "\"float64\"");

let deserialized: DataType = serde_json::from_str(&json).unwrap();
assert_eq!(deserialized, DataType::Float64);

Author

Haixing Hu

Variants

Bool

Boolean type

Char

Character type

Int8

8-bit signed integer

Int16

16-bit signed integer

Int32

32-bit signed integer

Int64

64-bit signed integer

Int128

128-bit signed integer

UInt8

8-bit unsigned integer

UInt16

16-bit unsigned integer

UInt32

32-bit unsigned integer

UInt64

64-bit unsigned integer

UInt128

128-bit unsigned integer

Float32

32-bit floating point number

Float64

64-bit floating point number

String

String type

Date

Date type (NaiveDate)

Time

Time type (NaiveTime)

DateTime

DateTime type (NaiveDateTime)

Instant

UTC time point (equivalent to Java Instant) (DateTime<Utc>)

BigInteger

Big integer type (BigInt)

BigDecimal

Big decimal type (BigDecimal)

IntSize

Platform-dependent signed integer (isize)

UIntSize

Platform-dependent unsigned integer (usize)

Duration

Duration type (std::time::Duration)

Url

URL type (url::Url)

StringMap

String map type (HashMap<String, String>)

Json

JSON value type (serde_json::Value)

Implementations

impl DataType

pub const fn as_str(&self) -> &'static str

Get the string representation of the data type.

Returns

Returns the name string of the data type.

Trait Implementations

impl Clone for DataType

fn clone(&self) -> DataType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DataType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DataType

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for DataType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for DataType

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for DataType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DataType

fn eq(&self, other: &DataType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for DataType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for DataType

impl Eq for DataType

impl StructuralPartialEq for DataType