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