use thiserror::Error; #[derive(Error, Debug)] pub enum StateVariableError { #[error("Conversion error: {0}")] ConversionError(String), #[error("Validation error: {0}")] ValidationError(String), #[error("Range error: {0}")] RangeError(String), #[error("Type error: {0}")] TypeError(String), #[error("Parse error: {0}")] ParseError(String), #[error("Event condition error: {0}")] EventConditionError(String), #[error("Arithmetic error: {0}")] ArithmeticError(String), #[error("Unknown error: {0}")] Unknown(String), }