nimbus-eth1/src/errors.nim

76 lines
2.3 KiB
Nim
Raw Normal View History

type
EVMError* = object of Exception
## Base error class for all evm errors.
VMNotFound* = object of EVMError
## No VM available for the provided block number.
BlockNotFound* = object of EVMError
## The block with the given number/hash does not exist.
ParentNotFound* = object of EVMError
## The parent of a given block does not exist.
CanonicalHeadNotFound* = object of EVMError
## The chain has no canonical head.
ValidationError* = object of EVMError
## Error to signal something does not pass a validation check.
Halt* = object of EVMError
## Raised by opcode function to halt vm execution.
VMError* = object of EVMError
## Class of errors which can be raised during VM execution.
erasesReturnData*: bool
burnsGas*: bool
OutOfGas* = object of VMError
## Error signaling that VM execution has run out of gas.
InsufficientStack* = object of VMError
## Error signaling that the stack is empty.
FullStack* = object of VMError
## Error signaling that the stack is full.
InvalidJumpDestination* = object of VMError
## Error signaling that the jump destination for a JUMPDEST operation is invalid.
InvalidInstruction* = object of VMError
## Error signaling that an opcode is invalid.
InsufficientFunds* = object of VMError
## Error signaling that an account has insufficient funds to transfer the
## requested value.
StackDepthLimit* = object of VMError
## Error signaling that the call stack has exceeded it's maximum allowed depth.
ContractCreationCollision* = object of VMError
## Error signaling that there was an address collision during contract creation.
Revert* = object of VMError
## Error used by the REVERT opcode
WriteProtection* = object of VMError
## Error raised if an attempt to modify the state database is made while
## operating inside of a STATICCALL context.
OutOfBoundsRead* = object of VMError
## Error raised to indicate an attempt was made to read data beyond the
## boundaries of the buffer (such as with RETURNDATACOPY)
TypeError* = object of VMError
## Error when invalid values are found
proc makeVMError*(): VMError =
result.burnsGas = true
result.erasesReturnData = true
proc makeRevert*(): Revert =
result.burnsGas = false
result.erasesReturnData = false