Exception: BlockGiven::ContractRevertError

Inherits:
RpcError
  • Object
show all
Defined in:
lib/block_given/errors.rb

Overview

eth_call / eth_estimateGas / eth_sendRawTransaction rejected by the EVM.

Constant Summary collapse

ERROR_STRING_SELECTOR = 
"0x08c379a0"
PANIC_SELECTOR = 
"0x4e487b71"
PANIC_REASONS = 
{
  0x00 => "generic compiler inserted panic",
  0x01 => "assertion failed",
  0x11 => "arithmetic overflow or underflow",
  0x12 => "division or modulo by zero",
  0x21 => "invalid enum conversion",
  0x22 => "incorrectly encoded storage byte array",
  0x31 => "pop() on an empty array",
  0x32 => "array index out of bounds",
  0x41 => "too much memory allocated or array too large",
  0x51 => "call to a zero-initialized variable of internal function type"
}.freeze

Instance Attribute Summary collapse

Attributes inherited from RpcError

#code, #data, #rpc_method

Instance Method Summary collapse

Methods inherited from RpcError

extract_revert_data, from_payload

Constructor Details

#initialize(message, code: nil, data: nil, rpc_method: nil, revert_data: nil, error_name: nil, args: nil) ⇒ ContractRevertError

Returns a new instance of ContractRevertError.



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# File 'lib/block_given/errors.rb', line 85

def initialize(message, code: nil, data: nil, rpc_method: nil, revert_data: nil, error_name: nil, args: nil)
  @revert_data = revert_data
  @error_name = error_name
  @args = args
  super(build_message(message), code: code, data: data, rpc_method: rpc_method)
end

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args.



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# File 'lib/block_given/errors.rb', line 83

def args
  @args
end

#error_name ⇒ Object (readonly)

Returns the value of attribute error_name.



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# File 'lib/block_given/errors.rb', line 83

def error_name
  @error_name
end

#revert_data ⇒ Object (readonly)

Returns the value of attribute revert_data.



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# File 'lib/block_given/errors.rb', line 83

def revert_data
  @revert_data
end

Instance Method Details

#custom_error? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/block_given/errors.rb', line 103

def custom_error?
  !selector.nil? && ![ERROR_STRING_SELECTOR, PANIC_SELECTOR].include?(selector)
end

#decode_with(interface) ⇒ Object

Returns a copy of this error enriched with a custom error decoded from the given ABI interface, or self when the interface does not know the selector.



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# File 'lib/block_given/errors.rb', line 109

def decode_with(interface)
  return self unless custom_error? && interface

  custom = interface.error_by_selector(selector)
  return self unless custom

  decoded = custom.decode(revert_data)
  self.class.new(
    "#{custom.name}(#{decoded.values.map(&:inspect).join(', ')})",
    code: code, data: data, rpc_method: rpc_method, revert_data: revert_data,
    error_name: custom.name, args: decoded
  )
end

#reason ⇒ Object

Human readable revert reason when it can be decoded (Error(string) / Panic).



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# File 'lib/block_given/errors.rb', line 93

def reason
  return @reason if defined?(@reason)

  @reason = decode_builtin_reason
end

#selector ⇒ Object 



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# File 'lib/block_given/errors.rb', line 99

def selector
  revert_data && revert_data.length >= 10 ? revert_data[0, 10] : nil
end