solana-contract

        let cpi_ctx = CpiContext::new(            ctx.accounts.token_program.to_account_info(),            transfer_instruction,        );         token::transfer(cpi_ctx, amount)?;         msg!("代币转移成功，更新内部余额记录...");         // 更新内部余额记录        let current_balance = get_token_balance(vault, ctx.accounts.mint.key());        msg!("当前余额记录: {}", current_balance);         let new_balance = current_balance.checked_add(amount)            .ok_or(ErrorCode::MathOverflow)?;        set_token_balance(vault, ctx.accounts.mint.key(), new_balance);        msg!("更新后余额记录: {}", new_balance);         emit!(UserDepositEvent {            user: ctx.accounts.user.key(),            token: ctx.accounts.mint.key(),            asset_metadata: ctx.accounts.mint.key(), // 对应 Aptos 的 Object<Metadata            amount,            timestamp: Clock::get()?.unix_timestamp,

1. Line 229 let cpi_ctx = CpiContext::new(: Makes a cross-program invocation into another program.
2. Line 234 token::transfer(cpi_ctx, amount)?;: An SPL token transfer through the Token Program.
3. Line 236 msg!("代币转移成功，更新内部余额记录...");: Logs to the program log, which is visible in explorers and the test output.
4. Line 242 let new_balance = current_balance.checked_add(amount): Uses checked arithmetic so overflow fails instead of wrapping.
5. Line 247 emit!(UserDepositEvent {: Emits an Anchor event that clients can parse from the logs.
6. Line 252 timestamp: Clock::get()?.unix_timestamp,: Reads on-chain time from the Clock sysvar.

    /// PDA bump seed    pub bump: u8,} /// 初始化全局配置上下文#[derive(Accounts)]pub struct InitializeGlobalConfig<'info> {    #[account(        init,        payer = admin,        space = 8 + 32 + 32 + 32 + 32 + 1,        seeds = [b"global_config"],        bump    )]    pub global_config: Account<'info, GlobalConfig>,     #[account(mut)]    pub admin: Signer<'info>,     pub system_program: Program<'info, System>,} /// 创建余额管理器上下文#[derive(Accounts)]

1. Line 37 /// PDA bump seed: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
2. Line 45 init,: Creates and pays for a new account. Space and payer must be specified.
3. Line 48 seeds = [b"global_config"],: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
4. Line 54 pub admin: Signer<'info>,: Requires this account to have signed the transaction.

                msg!("✅ 确认为临时 WSOL 账户");        msg!("  Owner: {}", token_acc.owner);        msg!("  Mint: {}", token_acc.mint);        msg!("  Amount: {}", token_acc.amount);                Ok(true)    }     /// 关闭临时 WSOL 账户    ///     /// 使用 CPI 调用 Token Program 的 CloseAccount 指令    fn close_temp_wsol_account<'info>(        temp_account: &AccountInfo<'info>,        destination: &AccountInfo<'info>,        authority: &AccountInfo<'info>,        signer_seeds: &[&[&[u8]]],    ) -> Result<()> {        msg!("🔧 关闭临时 WSOL 账户...");        msg!("  临时账户: {}", temp_account.key());        msg!("  租金接收者: {}", destination.key());        msg!("  权限账户: {}", authority.key());                use anchor_lang::solana_program::program::invoke_signed;

1. Line 86 msg!("✅ 确认为临时 WSOL 账户");: Logs to the program log, which is visible in explorers and the test output.
2. Line 108 use anchor_lang::solana_program::program::invoke_signed;: Makes a CPI signed by a PDA. The signer seeds prove the program controls that address.

        msg!("  程序 ID: {}", instruction.program_id);        msg!("  账户数量: {}", instruction.accounts.len());        msg!("  数据大小: {} 字节", instruction.data.len());         // 🔧 验证 AccountInfo 数组        msg!("🔧 验证 CPI 调用所需的 AccountInfo 数组...");                if account_infos.len() < instruction.accounts.len() {            msg!("❌ AccountInfo 数组长度不足");            msg!("  需要: {} 个账户", instruction.accounts.len());            msg!("  提供: {} 个账户", account_infos.len());            return Err(error!(                crate::constants::ErrorCode::InvalidAccountAddressFormat            ));        }         msg!("✅ AccountInfo 数组验证通过");        msg!("🚀 开始执行 Raydium AMM V4 交换（使用 PDA 签名）...");         // 🎯 执行真正的 CPI 调用！        // 🔐 使用 invoke_signed 来让 vault PDA 签名        match anchor_lang::solana_program::program::invoke_signed(&instruction, account_infos, signer_seeds) {            Ok(()) => {                msg!("✅ Raydium AMM V4 交换执行成功！");

1. Line 145 msg!(" 程序 ID: {}", instruction.program_id);: Logs to the program log, which is visible in explorers and the test output.
2. Line 165 // 🔐 使用 invoke_signed 来让 vault PDA 签名: Makes a CPI signed by a PDA. The signer seeds prove the program controls that address.