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use num_derive::FromPrimitive;
use num_traits::FromPrimitive;
use solana_sdk::{
decode_error::DecodeError,
info,
program_error::{PrintProgramError, ProgramError},
};
use thiserror::Error;
#[derive(Clone, Debug, Eq, Error, FromPrimitive, PartialEq)]
pub enum TokenError {
#[error("Insufficient funds")]
InsufficientFunds,
#[error("Account not associated with this Mint")]
MintMismatch,
#[error("Owner does not match")]
OwnerMismatch,
#[error("Fixed supply")]
FixedSupply,
#[error("AlreadyInUse")]
AlreadyInUse,
#[error("An owner is required if supply is zero")]
OwnerRequiredIfNoInitialSupply,
#[error("Invalid number of provided signers")]
InvalidNumberOfProvidedSigners,
#[error("Invalid number of required signers")]
InvalidNumberOfRequiredSigners,
#[error("State is unititialized")]
UninitializedState,
#[error("Instruction does not support native tokens")]
NativeNotSupported,
#[error("Instruction does not support non-native tokens")]
NonNativeNotSupported,
#[error("Invalid instruction")]
InvalidInstruction,
}
impl From<TokenError> for ProgramError {
fn from(e: TokenError) -> Self {
ProgramError::Custom(e as u32)
}
}
impl<T> DecodeError<T> for TokenError {
fn type_of() -> &'static str {
"TokenError"
}
}
impl PrintProgramError for TokenError {
fn print<E>(&self)
where
E: 'static + std::error::Error + DecodeError<E> + PrintProgramError + FromPrimitive,
{
match self {
TokenError::InsufficientFunds => info!("Error: insufficient funds"),
TokenError::MintMismatch => info!("Error: Account not associated with this Mint"),
TokenError::OwnerMismatch => info!("Error: owner does not match"),
TokenError::FixedSupply => info!("Error: the total supply of this token is fixed"),
TokenError::AlreadyInUse => info!("Error: account or token already in use"),
TokenError::OwnerRequiredIfNoInitialSupply => {
info!("Error: An owner is required if supply is zero")
}
TokenError::InvalidNumberOfProvidedSigners => {
info!("Error: Invalid number of provided signers")
}
TokenError::InvalidNumberOfRequiredSigners => {
info!("Error: Invalid number of required signers")
}
TokenError::UninitializedState => info!("Error: State is uninitialized"),
TokenError::NativeNotSupported => {
info!("Error: Instruction does not support native tokens")
}
TokenError::NonNativeNotSupported => {
info!("Error: Instruction does not support non-native tokens")
}
TokenError::InvalidInstruction => info!("Error: Invalid instruction"),
}
}
}
#[cfg(test)]
mod test {
use super::*;
fn return_token_error_as_program_error() -> ProgramError {
TokenError::MintMismatch.into()
}
#[test]
fn test_print_error() {
let error = return_token_error_as_program_error();
error.print::<TokenError>();
}
#[test]
#[should_panic(expected = "Custom(1)")]
fn test_error_unwrap() {
Err::<(), ProgramError>(return_token_error_as_program_error()).unwrap();
}
}