percli_program/instructions/
trade.rs

1use anchor_lang::prelude::*;
2
3use crate::error::{from_risk_error, PercolatorError};
4use crate::state::{engine_from_account_data, MARKET_ACCOUNT_SIZE};
5
6#[derive(Accounts)]
7pub struct Trade<'info> {
8    /// Either both traders sign, or a matcher authority signs on their behalf.
9    pub signer: Signer<'info>,
10
11    /// CHECK: Validated via discriminator and size.
12    #[account(
13        mut,
14        constraint = market.data_len() == MARKET_ACCOUNT_SIZE @ PercolatorError::AccountNotFound,
15    )]
16    pub market: UncheckedAccount<'info>,
17}
18
19pub fn handler(
20    ctx: Context<Trade>,
21    account_a: u16,
22    account_b: u16,
23    size_q: i128,
24    exec_price: u64,
25    funding_rate: i64,
26) -> Result<()> {
27    let market = &ctx.accounts.market;
28    let mut data = market.try_borrow_mut_data()?;
29
30    require!(&data[0..8] == b"percmrkt", PercolatorError::AccountNotFound);
31
32    let engine = engine_from_account_data(&mut data);
33    let oracle_price = engine.last_oracle_price;
34    let clock = Clock::get()?;
35
36    engine
37        .execute_trade(
38            account_a,
39            account_b,
40            oracle_price,
41            clock.slot,
42            size_q,
43            exec_price,
44            funding_rate,
45        )
46        .map_err(from_risk_error)?;
47
48    Ok(())
49}
percli_program/instructions/trade.rs

percli_program/instructions/
trade.rs
