State Variables
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This document describes the state variables in the perpetual futures trading smart contract. Variables are organized by functional module for clarity and ease of reference.
Borrowing
Section titled “Borrowing”| Variable | Type | Description |
|---|---|---|
PAIRS | Map<(TokenIndex, MarketIndex), BorrowingData> | Stores borrowing data for trading pairs |
PAIR_GROUPS | Map<(TokenIndex, MarketIndex), Vec<BorrowingPairGroup>> | Tracks historical group associations for borrowing pairs |
PAIR_OIS | Map<(TokenIndex, MarketIndex), OpenInterest> | Stores open interest data for pairs |
GROUPS | Map<(TokenIndex, GroupIndex), BorrowingData> | Stores borrowing data for groups |
GROUP_OIS | Map<(TokenIndex, GroupIndex), OpenInterest> | Stores open interest data for groups |
INITIAL_ACC_FEES | Map<(TokenIndex, Addr, UserTradeIndex), BorrowingInitialAccFees> | Tracks initial accumulated fees for trades |
The borrowing module manages leveraged trading fees and risk exposure:
PAIRSandGROUPS: Store borrowing-specific parameters including fee rates and accumulated fees for calculating trading costs. Note: This borrowingGROUPScontainsBorrowingDataand is distinct from the trading pairsGROUPSwhich contains general group information.PAIR_GROUPS: Maintains historical group associations for each pair. When pairs change groups, this ensures accurate fee calculations across different fee structures during a trade’s lifetime.PAIR_OISandGROUP_OIS: Track open interest for pairs and groups to enforce exposure limits and calculate dynamic borrowing rates based on market imbalances.INITIAL_ACC_FEES: Records accumulated fees when a trade opens, providing a reference point for calculating total borrowing fees at closure.
| Variable | Type | Description |
|---|---|---|
FEE_TIERS | Item<[FeeTier; 8]> | Stores the fee tier structure |
PENDING_GOV_FEES | Map<TokenIndex, Uint128> | Tracks pending governance fees |
VAULT_CLOSING_FEE_P | Item<Decimal> | Stores the vault closing fee percentage |
TRADER_DAILY_INFOS | Map<Addr, HashMap<u64, TraderDailyInfo>> | Stores daily trading information for traders |
PAIR_VOLUME_MULTIPLIERS | Map<MarketIndex, Decimal> | Stores volume multipliers for pairs |
TRADER_INFOS | Map<Addr, TraderInfo> | Stores general information about traders |
Referrer System
Section titled “Referrer System”| Variable | Type | Description |
|---|---|---|
REFERRER_CODES | Map<String, Addr> | Maps referrer codes to referrer addresses |
REFERRER_CODES_REVERSE | Map<Addr, String> | Maps referrer addresses to their codes |
USER_REFERRERS | Map<&Addr, Addr> | Maps users to their referrers |
REFERRER_FEES | Map<(TokenIndex, &Addr), Uint128> | Tracks fees earned by referrers |
REFERRER_FEE_PERCENTAGE | Item<[Decimal; 4]> | Fee percentages for different referrer tiers |
REFERRER_FEE_TIER | Map<Addr, u8> | Maps referrers to their fee tier levels |
REFERREE_BASE_FEE_MULTIPLIER | Item<Decimal> | Base fee multiplier for referees |
The fees module implements dynamic tiered fee structures and referral programs:
Core Fee Management:
FEE_TIERS: Defines fee levels based on trading activity to attract high-volume traders.PENDING_GOV_FEES: Accumulates governance fees for transparent distribution.VAULT_CLOSING_FEE_P: Sets the percentage of closing fees allocated to vault insurance/liquidity.TRADER_DAILY_INFOSandTRADER_INFOS: Track daily and cumulative trading data to calculate fee tiers over rolling periods.PAIR_VOLUME_MULTIPLIERS: Weight trading volume differently across markets to incentivize specific pairs or balance liquidity.
Referral System: The referral system rewards users for platform growth through a comprehensive affiliate program:
REFERRER_CODESandREFERRER_CODES_REVERSE: Enable bidirectional mapping between referrer codes and addresses.USER_REFERRERS: Maps users to their referring addresses.REFERRER_FEES: Accumulates earnings for each referrer across token types.REFERRER_FEE_PERCENTAGEandREFERRER_FEE_TIER: Support multi-tier referrer levels with different fee percentages.REFERREE_BASE_FEE_MULTIPLIER: Provides base discounts for referred users.
Trading Pairs and Groups
Section titled “Trading Pairs and Groups”| Variable | Type | Description |
|---|---|---|
PERP_MARKETS | Map<MarketIndex, MarketInfo> | Stores information about trading pairs |
GROUPS | Map<GroupIndex, Group> | Stores information about trading groups |
FEES | Map<FeeIndex, Fee> | Stores fee information for trading pairs |
PAIR_CUSTOM_MAX_LEVERAGE | Map<MarketIndex, Decimal> | Stores custom maximum leverage for pairs |
AFTER_HOURS_LEVERAGE | Item<Decimal> | Stores the global after-hours effective leverage cap |
AFTER_HOURS_MARKETS | Map<MarketIndex, bool> | Marks markets where after-hours leverage controls apply |
ORACLE_ADDRESS | Item<Addr> | Stores the address of the oracle contract |
VAULT_ADDRESSES | Map<(GroupIndex, TokenIndex), Addr> | Stores vault addresses for each group/token combination |
This module defines the core trading infrastructure:
PERP_MARKETS: Stores trading pair information including base/quote assets, oracle indices, and associated group/fee indices.GROUPS: Defines leverage limits and group-wide parameters for categorizing pairs with similar risk profiles. Note: This differs from the borrowingGROUPSwhich containsBorrowingData.FEES: Contains fee structures (open/close/trigger fees) for each pair, enabling market-specific fee adjustments.PAIR_CUSTOM_MAX_LEVERAGE: Provides pair-specific leverage limits that override group settings for volatile or illiquid markets.AFTER_HOURS_LEVERAGEandAFTER_HOURS_MARKETS: Apply a lower effective leverage cap to live positions carried through a scheduled market close on configured markets.ORACLE_ADDRESS: Points to the oracle contract for price feeds used in trade execution and liquidations.VAULT_ADDRESSES: Maps vault contract addresses to group/token combinations for multi-vault asset management.
MarketInfo also records scheduled-session metadata: block_last_closed,
block_last_opened, and last_close_price. The after-hours leverage guard uses
the block fields to decide whether a live trade was carried through the latest
close. It does not use last_close_price as the after-hours settlement price.
Price Impact and Open Interest
Section titled “Price Impact and Open Interest”| Variable | Type | Description |
|---|---|---|
OI_WINDOWS_SETTINGS | Item<OiWindowsSettings> | Stores settings for open interest windows |
WINDOWS | Map<(WindowDuration, MarketIndex, WindowIndex), PairOi> | Stores open interest data for specific windows |
PAIR_DEPTHS | Map<MarketIndex, PairDepth> | Stores market depth information for pairs |
TRADE_LAST_WINDOW_OI | Map<(Addr, TradeInfoIndex), Uint128> | Tracks the last window’s open interest for trades |
This module manages market dynamics and prevents excessive price impact:
OI_WINDOWS_SETTINGS: Defines parameters for tracking open interest over time windows to calculate dynamic market impact.WINDOWS: Stores historical open interest data for calculating cumulative trade impact over specific time periods. This time-windowed approach prevents market manipulation.PAIR_DEPTHS: Contains market liquidity information used to calculate price impact for large trades, protecting against sudden price movements.TRADE_LAST_WINDOW_OI: Tracks each trade’s contribution to open interest in its last active window for accurate updates when trades close or modify.
Trading
Section titled “Trading”| Variable | Type | Description |
|---|---|---|
COLLATERALS | Map<TokenIndex, CollateralInfo> | Stores information about collateral types |
USER_TRADE_INDEX | Map<Addr, UserTradeIndex> | Tracks the next trade index for each user |
TRADES | Map<(User, UserTradeIndex), Trade> | Stores individual trade information |
TRADE_INFOS | Map<(User, TradeInfoIndex), TradeInfo> | Stores additional information about trades |
TRADER_STORED | Map<User, bool> | Tracks whether a trader’s information is stored |
USER_LIVE_TRADE_COUNTS | Map<User, u64> | Tracks trade counts for users |
MINIMUM_POSITION_SIZE_USD | Item<Decimal> | Stores the minimum position size in USD |
TRADING_ACTIVATED | Item<TradingActivated> | Stores the current trading activation status |
The trading module forms the protocol’s core functionality:
Trade Management:
COLLATERALS: Defines accepted collateral types with name, active status, and denomination for multi-asset support.USER_TRADE_INDEX: Tracks the next available trade index per user for unique identification and prevents index collisions.TRADESandTRADE_INFOS: Store comprehensive trade data including position sizes, leverage, prices, and timestamps for fee calculations.
Optimization and Controls:
TRADER_STOREDandUSER_LIVE_TRADE_COUNTS: Optimization mechanisms that reduce gas costs and enable efficient trade ID assignment.MINIMUM_POSITION_SIZE_USD: Sets minimum position thresholds to ensure economic viability and prevent dust trades.TRADING_ACTIVATED: Critical safety feature supporting multiple activation levels (fully active, close-only, paused) for emergency control.