Method: Stellar::ClaimPredicate#evaluate

Defined in:
lib/stellar/claim_predicate.rb

#evaluate(created_at, claiming_at) ⇒ Boolean

Evaluates the predicate value for provided inputs.

Parameters:

  • created_at (#to_time|#to_int) —

    closing time of the ledger containing CreateClaimableBalance operation

  • claiming_at (#to_time|#to_int|ActiveSupport::Duration) —

    time point to evaluate predicate at, either absolute time or duration relative to created_at. In reality predicate will be evaluated by stellar-core using the closing time of a ledger containing ClaimClaimableBalance operation, in either successful or failed state.

Returns:

  • (Boolean) —

    true if this predicate would allow claiming the balance, false otherwise



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# File 'lib/stellar/claim_predicate.rb', line 139

def evaluate(created_at, claiming_at)
  created_at = created_at.to_time if created_at.respond_to?(:to_time)
  claiming_at = created_at + claiming_at if claiming_at.is_a?(ActiveSupport::Duration)
  claiming_at = claiming_at.to_time if claiming_at.respond_to?(:to_time)

  return false if claiming_at < created_at

  case switch
  when ClaimPredicateType::UNCONDITIONAL
    true
  when ClaimPredicateType::BEFORE_RELATIVE_TIME
    Integer(claiming_at) < Integer(created_at) + value
  when ClaimPredicateType::BEFORE_ABSOLUTE_TIME
    Integer(claiming_at).to_i < value
  when ClaimPredicateType::AND
    value[0].evaluate(created_at, claiming_at) && value[1].evaluate(created_at, claiming_at)
  when ClaimPredicateType::OR
    value[0].evaluate(created_at, claiming_at) || value[1].evaluate(created_at, claiming_at)
  when ClaimPredicateType::NOT
    !value.evaluate(created_at, claiming_at)
  else
    raise ArgumentError, "evaluation is not implemented for #{switch.name} predicate"
  end
end