litesvm_token/
approve_checked.rs

1use {
2    super::{
3        get_multisig_signers, get_spl_account,
4        spl_token::{instruction::approve_checked, state::Mint},
5        TOKEN_ID,
6    },
7    litesvm::{types::FailedTransactionMetadata, LiteSVM},
8    smallvec::{smallvec, SmallVec},
9    solana_keypair::Keypair,
10    solana_pubkey::Pubkey,
11    solana_signer::{signers::Signers, Signer},
12    solana_transaction::Transaction,
13};
14
15/// ### Description
16/// Builder for the [`approve_checked`] instruction.
17///
18/// ### Optional fields
19/// - `source`: associated token account of the `payer` by default.
20/// - `owner`: `payer` by default.
21/// - `token_program_id`: [`TOKEN_ID`] by default.
22pub struct ApproveChecked<'a> {
23    svm: &'a mut LiteSVM,
24    payer: &'a Keypair,
25    delegate: &'a Pubkey,
26    mint: &'a Pubkey,
27    source: Option<&'a Pubkey>,
28    amount: u64,
29    signers: SmallVec<[&'a Keypair; 1]>,
30    owner: Option<Pubkey>,
31    token_program_id: Option<&'a Pubkey>,
32    decimals: Option<u8>,
33}
34
35impl<'a> ApproveChecked<'a> {
36    /// Creates a new instance of [`approve_checked`] instruction.
37    pub fn new(
38        svm: &'a mut LiteSVM,
39        payer: &'a Keypair,
40        delegate: &'a Pubkey,
41        mint: &'a Pubkey,
42        amount: u64,
43    ) -> Self {
44        ApproveChecked {
45            svm,
46            payer,
47            delegate,
48            mint,
49            source: None,
50            token_program_id: None,
51            amount,
52            owner: None,
53            signers: smallvec![payer],
54            decimals: None,
55        }
56    }
57
58    /// Sets the token account source.
59    pub fn source(mut self, source: &'a Pubkey) -> Self {
60        self.source = Some(source);
61        self
62    }
63
64    /// Sets the token program id.
65    pub fn token_program_id(mut self, program_id: &'a Pubkey) -> Self {
66        self.token_program_id = Some(program_id);
67        self
68    }
69
70    /// Sets the owner of the account with single owner.
71    pub fn owner(mut self, owner: &'a Keypair) -> Self {
72        self.owner = Some(owner.pubkey());
73        self.signers = smallvec![owner];
74        self
75    }
76
77    /// Sets the owner of the account with multisig owner.
78    pub fn multisig(mut self, multisig: &'a Pubkey, signers: &'a [&'a Keypair]) -> Self {
79        self.owner = Some(*multisig);
80        self.signers = SmallVec::from(signers);
81        self
82    }
83
84    /// Sends the transaction.
85    pub fn send(self) -> Result<(), FailedTransactionMetadata> {
86        let payer_pk = self.payer.pubkey();
87        let token_program_id = self.token_program_id.unwrap_or(&TOKEN_ID);
88
89        let authority = self.owner.unwrap_or(payer_pk);
90        let signing_keys = self.signers.pubkeys();
91        let signer_keys = get_multisig_signers(&authority, &signing_keys);
92
93        let source_pk = if let Some(source) = self.source {
94            *source
95        } else {
96            spl_associated_token_account_interface::address::get_associated_token_address_with_program_id(
97                &authority,
98                self.mint,
99                token_program_id,
100            )
101        };
102
103        let mint: Mint = get_spl_account(self.svm, self.mint)?;
104        let ix = approve_checked(
105            token_program_id,
106            &source_pk,
107            self.mint,
108            self.delegate,
109            &authority,
110            &signer_keys,
111            self.amount,
112            self.decimals.unwrap_or(mint.decimals),
113        )?;
114
115        let block_hash = self.svm.latest_blockhash();
116        let mut tx = Transaction::new_with_payer(&[ix], Some(&payer_pk));
117        tx.partial_sign(&[self.payer], block_hash);
118        tx.partial_sign(self.signers.as_ref(), block_hash);
119
120        self.svm.send_transaction(tx)?;
121
122        Ok(())
123    }
124}
litesvm_token/approve_checked.rs

litesvm_token/
approve_checked.rs
