2b52cc6e32
- Archived multiple non-EVM adapters (Algorand, Hedera, Tron, TON, Cosmos, Solana) and compliance contracts (IndyVerifier) to `archive/solidity/contracts/`. - Updated documentation to reflect the historical status of archived components. - Adjusted `foundry.toml` and `README.md` for clarity on historical dependencies and configurations. - Enhanced Makefile and package.json scripts for improved contract testing and building processes. - Removed obsolete contracts (AlltraCustomBridge, CommodityCCIPBridge, ISO4217WCCIPBridge, VaultBridgeAdapter) from the main directory. - Updated implementation reports to indicate archived status for various components.
64 lines
2.5 KiB
Solidity
64 lines
2.5 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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/**
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* @title XAUTriangulation
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* @notice Library for enforcing XAU triangulation for all currency conversions
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* @dev MANDATORY: All currency conversions MUST go through XAU (gold)
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*
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* Triangulation formula:
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* CurrencyA → XAU → CurrencyB
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*
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* Steps:
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* 1. Convert CurrencyA to XAU: xauAmount = currencyAAmount / xauRateA
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* 2. Convert XAU to CurrencyB: currencyBAmount = xauAmount * xauRateB
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*/
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library XAUTriangulation {
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/**
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* @notice Triangulate from Currency A to Currency B via XAU
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* @dev All conversions MUST go through XAU - this is mandatory
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* @param currencyAAmount Amount in Currency A (18 decimals)
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* @param xauRateA Rate: 1 oz XAU = xauRateA units of Currency A (18 decimals)
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* @param xauRateB Rate: 1 oz XAU = xauRateB units of Currency B (18 decimals)
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* @return currencyBAmount Amount in Currency B (18 decimals)
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*/
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function triangulate(
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uint256 currencyAAmount,
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uint256 xauRateA,
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uint256 xauRateB
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) internal pure returns (uint256 currencyBAmount) {
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require(xauRateA > 0, "XAUTriangulation: invalid XAU rate A");
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require(xauRateB > 0, "XAUTriangulation: invalid XAU rate B");
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// Step 1: Convert Currency A to XAU
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// xauAmount = currencyAAmount / xauRateA
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uint256 xauAmount = (currencyAAmount * 1e18) / xauRateA;
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// Step 2: Convert XAU to Currency B
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// currencyBAmount = xauAmount * xauRateB / 1e18
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currencyBAmount = (xauAmount * xauRateB) / 1e18;
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}
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/**
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* @notice Convert amount to XAU
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* @param amount Amount to convert (18 decimals)
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* @param xauRate Rate: 1 oz XAU = xauRate units (18 decimals)
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* @return xauAmount Amount in XAU (18 decimals)
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*/
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function toXAU(uint256 amount, uint256 xauRate) internal pure returns (uint256 xauAmount) {
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require(xauRate > 0, "XAUTriangulation: invalid XAU rate");
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xauAmount = (amount * 1e18) / xauRate;
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}
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/**
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* @notice Convert XAU amount to currency
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* @param xauAmount Amount in XAU (18 decimals)
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* @param xauRate Rate: 1 oz XAU = xauRate units (18 decimals)
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* @return currencyAmount Amount in currency (18 decimals)
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*/
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function fromXAU(uint256 xauAmount, uint256 xauRate) internal pure returns (uint256 currencyAmount) {
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require(xauRate > 0, "XAUTriangulation: invalid XAU rate");
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currencyAmount = (xauAmount * xauRate) / 1e18;
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}
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}
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