dart_web3_core #

The foundational primitive layer for the Dart Web3 SDK. This package provides the essential types and utilities required for all blockchain interactions, focusing on performance and cross-platform compatibility.

🚀 Features #

• Robust Address Management: Full support for EIP-55 checksums and ICAP formats.
• Typed RLP Implementation: high-performance Recursive Length Prefix encoding for Ethereum data structures.
• Ether Units: Type-safe conversions (Wei, Gwei, Ether) with fixed-point accuracy.
• Byte Manipulation: Zero-copy friendly extraction and conversion utilities for Uint8List.

Usage Flow #

sequenceDiagram
    participant U as User
    participant A as Address
    participant R as RLP
    participant H as Hex
    U->>A: parseHex(0x...)
    A->>H: decode()
    H->>R: encode(data)
    R-->>U: result bytes

🏗️ Architecture #

graph TD
    subgraph Primitives [Fundamental Types]
        Address[EthAddress]
        Hash[Hash / Bytes]
        BlockNum[BlockNumber]
    end

    subgraph Logic [Manipulation Layers]
        RLP[RLP Logic]
        Hex[Hex Utils]
        Units[EthUnit]
    end

    Primitives --> Logic
    Logic --> API[Public Interface]
    
    classDef primary fill:#f9f,stroke:#333,stroke-width:2px;
    class Primitives,Logic primary;

📚 Technical Reference #

Core Classes #

### Advanced RLP Encoding
```dart
final encoded = RLP.encode([
  EthAddress.fromHex('0x...').toBytes(),
  BigInt.from(1000),
  [Uint8List.fromList([1, 2, 3])]
]);

📦 Installation #

Add to your pubspec.yaml:

dependencies:
  dart_web3_core: ^0.1.0