solana-dex-parser

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/parsers/pumpfun/parser-pumpswap-event.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../../prettify.css" /> <link rel="stylesheet" href="../../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../../index.html">All files</a> / <a href="index.html">src/parsers/pumpfun</a> parser-pumpswap-event.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 63.63% Statements 21/33 </div> <div class='fl pad1y space-right2'> 50% Branches 3/6 </div> <div class='fl pad1y space-right2'> 50% Functions 5/10 </div> <div class='fl pad1y space-right2'> 65.62% Lines 21/32 </div> </div> Press n or j to 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                  2x   2x                                                                                                                                                                                              </td><td class="text"><pre class="prettyprint lang-js">import { DEX_PROGRAMS, DISCRIMINATORS } from '../../constants'; import { InstructionClassifier } from '../../instruction-classifier'; import { TransactionAdapter } from '../../transaction-adapter'; import { ClassifiedInstruction, EventParser, PumpswapBuyEvent, PumpswapCreatePoolEvent, PumpswapDepositEvent, PumpswapEvent, PumpswapSellEvent, PumpswapWithdrawEvent, } from '../../types'; import { getInstructionData } from '../../utils'; import { BinaryReader } from '../binary-reader';   export class PumpswapEventParser { constructor(private readonly adapter: TransactionAdapter) {}   private readonly eventParsers: Record<string, EventParser<any>> = { CREATE: { discriminator: DISCRIMINATORS.PUMPSWAP.CREATE_POOL, decode: this.decodeCreateEvent.bind(this), }, ADD: { discriminator: DISCRIMINATORS.PUMPSWAP.ADD_LIQUIDITY, decode: this.decodeAddLiquidity.bind(this), }, REMOVE: { discriminator: DISCRIMINATORS.PUMPSWAP.REMOVE_LIQUIDITY, decode: this.decodeRemoveLiquidity.bind(this), }, BUY: { discriminator: DISCRIMINATORS.PUMPSWAP.BUY, decode: this.decodeBuyEvent.bind(this), }, SELL: { discriminator: DISCRIMINATORS.PUMPSWAP.SELL, decode: this.decodeSellEvent.bind(this), }, };   public processEvents(): PumpswapEvent[] { const instructions = new InstructionClassifier(this.adapter).getInstructions(DEX_PROGRAMS.PUMP_SWAP.id); return this.parseInstructions(instructions); }   public parseInstructions(instructions: ClassifiedInstruction[]): PumpswapEvent[] { return instructions .map(({ instruction, outerIndex, innerIndex }) => { try { const data = getInstructionData(instruction); const discriminator = Buffer.from(data.slice(0, 16));   for (const [type, parser] of Object.entries(this.eventParsers)) { if (discriminator.equals(parser.discriminator)) { const eventData = parser.decode(data.slice(16)); Iif (!eventData) return null;   const event = { type: type as 'CREATE' | 'ADD' | 'REMOVE' | 'BUY' | 'SELL', data: eventData, slot: this.adapter.slot, timestamp: this.adapter.blockTime || 0, signature: this.adapter.signature, idx: `${outerIndex}-${innerIndex ?? 0}`, }; return event; } } } catch (error) { console.error('Failed to parse Pumpswap event:', error); } return null; }) .filter((event): event is PumpswapEvent => event !== null); }   private decodeBuyEvent(data: Buffer): PumpswapBuyEvent { const reader = new BinaryReader(data); return { timestamp: Number(reader.readI64()), baseAmountOut: reader.readU64(), maxQuoteAmountIn: reader.readU64(), userBaseTokenReserves: reader.readU64(), userQuoteTokenReserves: reader.readU64(), poolBaseTokenReserves: reader.readU64(), poolQuoteTokenReserves: reader.readU64(), quoteAmountIn: reader.readU64(), lpFeeBasisPoints: reader.readU64(), lpFee: reader.readU64(), protocolFeeBasisPoints: reader.readU64(), protocolFee: reader.readU64(), quoteAmountInWithLpFee: reader.readU64(), userQuoteAmountIn: reader.readU64(), pool: reader.readPubkey(), user: reader.readPubkey(), userBaseTokenAccount: reader.readPubkey(), userQuoteTokenAccount: reader.readPubkey(), protocolFeeRecipient: reader.readPubkey(), protocolFeeRecipientTokenAccount: reader.readPubkey(), }; }   private decodeSellEvent(data: Buffer): PumpswapSellEvent { const reader = new BinaryReader(data);   return { timestamp: Number(reader.readI64()), baseAmountIn: reader.readU64(), minQuoteAmountOut: reader.readU64(), userBaseTokenReserves: reader.readU64(), userQuoteTokenReserves: reader.readU64(), poolBaseTokenReserves: reader.readU64(), poolQuoteTokenReserves: reader.readU64(), quoteAmountOut: reader.readU64(), lpFeeBasisPoints: reader.readU64(), lpFee: reader.readU64(), protocolFeeBasisPoints: reader.readU64(), protocolFee: reader.readU64(), quoteAmountOutWithoutLpFee: reader.readU64(), userQuoteAmountOut: reader.readU64(), pool: reader.readPubkey(), user: reader.readPubkey(), userBaseTokenAccount: reader.readPubkey(), userQuoteTokenAccount: reader.readPubkey(), protocolFeeRecipient: reader.readPubkey(), protocolFeeRecipientTokenAccount: reader.readPubkey(), }; }   private decodeAddLiquidity(data: Buffer): PumpswapDepositEvent { const reader = new BinaryReader(data);   return { timestamp: Number(reader.readI64()), lpTokenAmountOut: reader.readU64(), maxBaseAmountIn: reader.readU64(), maxQuoteAmountIn: reader.readU64(), userBaseTokenReserves: reader.readU64(), userQuoteTokenReserves: reader.readU64(), poolBaseTokenReserves: reader.readU64(), poolQuoteTokenReserves: reader.readU64(), baseAmountIn: reader.readU64(), quoteAmountIn: reader.readU64(), lpMintSupply: reader.readU64(),   pool: reader.readPubkey(), user: reader.readPubkey(), userBaseTokenAccount: reader.readPubkey(), userQuoteTokenAccount: reader.readPubkey(), userPoolTokenAccount: reader.readPubkey(), }; }   private decodeCreateEvent(data: Buffer): PumpswapCreatePoolEvent { const reader = new BinaryReader(data); return { timestamp: Number(reader.readI64()), index: reader.readU16(), creator: reader.readPubkey(), baseMint: reader.readPubkey(), quoteMint: reader.readPubkey(), baseMintDecimals: reader.readU8(), quoteMintDecimals: reader.readU8(), baseAmountIn: reader.readU64(), quoteAmountIn: reader.readU64(), poolBaseAmount: reader.readU64(), poolQuotAmount: reader.readU64(), minimumLiquidity: reader.readU64(), initialLiquidity: reader.readU64(), lpTokenAmountOut: reader.readU64(), poolBump: reader.readU8(), pool: reader.readPubkey(), lpMint: reader.readPubkey(), userBaseTokenAccount: reader.readPubkey(), userQuoteTokenAccount: reader.readPubkey(), }; }   private decodeRemoveLiquidity(data: Buffer): PumpswapWithdrawEvent { const reader = new BinaryReader(data); return { timestamp: Number(reader.readI64()), lpTokenAmountIn: reader.readU64(), minBaseAmountOut: reader.readU64(), minQuoteAmountOut: reader.readU64(), userBaseTokenReserves: reader.readU64(), userQuoteTokenReserves: reader.readU64(), poolBaseTokenReserves: reader.readU64(), poolQuoteTokenReserves: reader.readU64(), baseAmountOut: reader.readU64(), quoteAmountOut: reader.readU64(), lpMintSupply: reader.readU64(), pool: reader.readPubkey(), user: reader.readPubkey(), userBaseTokenAccount: reader.readPubkey(), userQuoteTokenAccount: reader.readPubkey(), userPoolTokenAccount: reader.readPubkey(), }; } }  </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-04-22T06:14:41.153Z </div> <script src="../../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../../sorter.js"></script> <script src="../../../block-navigation.js"></script> </body> 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