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| // calling token program to burn some tokens | |
| invoke( | |
| &spl_token::instruction::burn( | |
| &spl_token::id(), | |
| user_token_account_ai.key, | |
| vending_machine_mint.key, | |
| &user.key, | |
| &[], | |
| price, | |
| )?, | |
| &[user_token_account_ai.clone(), vending_machine_mint.clone(), user.clone()], | |
| )?; | |
| // allocating data for a mint account | |
| invoke_signed( | |
| &system_instruction::create_account( | |
| user.key, | |
| pool_mint_ai.key, | |
| rent::Rent::get()?.minimum_balance(mint_data_len), | |
| mint_data_len as u64, | |
| &spl_token::id(), | |
| ), | |
| &[user.clone(), pool_mint_ai.clone(), system_program.clone()], | |
| &[pool_mint_seeds], | |
| )?; |
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