yash-arith-0.2.0

[0.2.0] - 2023-09-10

Added

• TokenError, SyntaxError, EvalError, ErrorCause, and Error now implement std::error::Error.

Changed

• Variable access is now fallible.
  • Added associated type GetVariableError to Env.
  • Changed the return type of Env::get_variable from Option<&str> to Result<Option<&str>, GetVariableError>.
  • Error, EvalError and ErrorCause now take two type parameters, the first of which is for GetVariableError.
  • Changed the return type of eval from Result<Value, Error<E::AssignVariableError>> to Result<Value, Error<E::GetVariableError, E::AssignVariableError>>.
• Internal dependency versions
  • thiserror 1.0.43 → 1.0.47