87 lines
3.6 KiB
Rust
87 lines
3.6 KiB
Rust
//! Error types
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use num_derive::FromPrimitive;
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use solana_program::{decode_error::DecodeError, program_error::ProgramError};
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use thiserror::Error;
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/// Errors that may be returned by the TokenSwap program.
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#[derive(Clone, Debug, Eq, Error, FromPrimitive, PartialEq)]
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pub enum SwapError {
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/// The account cannot be initialized because it is already being used.
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#[error("Swap account already in use")]
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AlreadyInUse,
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/// The program address provided doesn't match the value generated by the program.
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#[error("Invalid program address generated from nonce and key")]
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InvalidProgramAddress,
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/// The owner of the input isn't set to the program address generated by the program.
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#[error("Input account owner is not the program address")]
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InvalidOwner,
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/// The owner of the pool token output is set to the program address generated by the program.
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#[error("Output pool account owner cannot be the program address")]
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InvalidOutputOwner,
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/// The deserialization of the account returned something besides State::Mint.
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#[error("Deserialized account is not an SPL Token mint")]
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ExpectedMint,
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/// The deserialization of the account returned something besides State::Account.
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#[error("Deserialized account is not an SPL Token account")]
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ExpectedAccount,
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/// The input token account is empty.
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#[error("Input token account empty")]
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EmptySupply,
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/// The pool token mint has a non-zero supply.
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#[error("Pool token mint has a non-zero supply")]
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InvalidSupply,
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/// The provided token account has a delegate.
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#[error("Token account has a delegate")]
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InvalidDelegate,
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/// The input token is invalid for swap.
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#[error("InvalidInput")]
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InvalidInput,
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/// Address of the provided swap token account is incorrect.
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#[error("Address of the provided swap token account is incorrect")]
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IncorrectSwapAccount,
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/// Address of the provided pool token mint is incorrect
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#[error("Address of the provided pool token mint is incorrect")]
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IncorrectPoolMint,
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/// The output token is invalid for swap.
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#[error("InvalidOutput")]
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InvalidOutput,
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/// General calculation failure due to overflow or underflow
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#[error("General calculation failure due to overflow or underflow")]
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CalculationFailure,
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/// Invalid instruction number passed in.
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#[error("Invalid instruction")]
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InvalidInstruction,
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/// Swap input token accounts have the same mint
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#[error("Swap input token accounts have the same mint")]
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RepeatedMint,
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/// Swap instruction exceeds desired slippage limit
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#[error("Swap instruction exceeds desired slippage limit")]
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ExceededSlippage,
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/// The provided token account has a close authority.
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#[error("Token account has a close authority")]
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InvalidCloseAuthority,
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/// The pool token mint has a freeze authority.
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#[error("Pool token mint has a freeze authority")]
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InvalidFreezeAuthority,
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/// The pool fee token account is incorrect
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#[error("Pool fee token account incorrect")]
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IncorrectFeeAccount,
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/// Given pool token amount results in zero trading tokens
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#[error("Given pool token amount results in zero trading tokens")]
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ZeroTradingTokens,
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/// The fee calculation failed due to overflow, underflow, or unexpected 0
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#[error("Fee calculation failed due to overflow, underflow, or unexpected 0")]
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FeeCalculationFailure,
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}
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impl From<SwapError> for ProgramError {
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fn from(e: SwapError) -> Self {
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ProgramError::Custom(e as u32)
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}
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}
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impl<T> DecodeError<T> for SwapError {
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fn type_of() -> &'static str {
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"Swap Error"
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}
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}
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