Core Architecture

Contract Structure

The system consists of two main contracts:

• RepoTokenLinkedListStorageV1: Defines the storage layout

• RepoTokenLinkedList: Implements the core trading logic and access control

Key Dependencies

• OpenZeppelin Upgradeable contracts for:

  • Access Control

  • Pausable functionality

  • Reentrancy protection

  • UUPS upgradeability pattern

• Integration with Term Protocol contracts:

  • TermController

  • TermDiscountRateAdapter

  • TermRepoServicer

Storage Structure

Listing Management

struct Listing {
    address seller;
    address token;
    uint256 amount;
    uint256 next;
    uint256 prev;
}

struct Queue {
    uint256 head;
    uint256 tail;
}

The contract uses a linked list implementation for efficient listing management, with separate queues for each RepoToken.