anchor/spl/src/token.rs

use anchor_lang::{Accounts, CpiContext};
use solana_program::account_info::AccountInfo;
use solana_program::entrypoint::ProgramResult;

pub fn transfer<'a, 'b, 'c, 'info>(
    ctx: CpiContext<'a, 'b, 'c, 'info, Transfer<'info>>,
    amount: u64,
) -> ProgramResult {
    let ix = spl_token::instruction::transfer(
        &spl_token::ID,
        ctx.accounts.from.key,
        ctx.accounts.to.key,
        ctx.accounts.authority.key,
        &[],
        amount,
    )?;
    solana_program::program::invoke_signed(
        &ix,
        &[
            ctx.accounts.from.clone(),
            ctx.accounts.to.clone(),
            ctx.accounts.authority.clone(),
            ctx.program.clone(),
        ],
        ctx.signer_seeds,
    )
}

pub fn mint_to<'a, 'b, 'c, 'info>(
    ctx: CpiContext<'a, 'b, 'c, 'info, MintTo<'info>>,
    amount: u64,
) -> ProgramResult {
    let ix = spl_token::instruction::mint_to(
        &spl_token::ID,
        ctx.accounts.mint.key,
        ctx.accounts.to.key,
        ctx.accounts.authority.key,
        &[],
        amount,
    )?;
    solana_program::program::invoke_signed(
        &ix,
        &[
            ctx.accounts.mint.clone(),
            ctx.accounts.to.clone(),
            ctx.accounts.authority.clone(),
            ctx.program.clone(),
        ],
        ctx.signer_seeds,
    )
}

pub fn burn<'a, 'b, 'c, 'info>(
    ctx: CpiContext<'a, 'b, 'c, 'info, Burn<'info>>,
    amount: u64,
) -> ProgramResult {
    let ix = spl_token::instruction::burn(
        &spl_token::ID,
        ctx.accounts.to.key,
        ctx.accounts.mint.key,
        ctx.accounts.authority.key,
        &[],
        amount,
    )?;
    solana_program::program::invoke_signed(
        &ix,
        &[
            ctx.accounts.to.clone(),
            ctx.accounts.mint.clone(),
            ctx.accounts.authority.clone(),
            ctx.program.clone(),
        ],
        ctx.signer_seeds,
    )
}

#[derive(Accounts)]
pub struct Transfer<'info> {
    pub from: AccountInfo<'info>,
    pub to: AccountInfo<'info>,
    pub authority: AccountInfo<'info>,
}

#[derive(Accounts)]
pub struct MintTo<'info> {
    pub mint: AccountInfo<'info>,
    pub to: AccountInfo<'info>,
    pub authority: AccountInfo<'info>,
}

#[derive(Accounts)]
pub struct Burn<'info> {
    pub mint: AccountInfo<'info>,
    pub to: AccountInfo<'info>,
    pub authority: AccountInfo<'info>,
}