107 lines
3.1 KiB
Rust
107 lines
3.1 KiB
Rust
//! Errors reported while building or applying a maneuver.
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//!
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//! 构建或施加机动时报告的错误。
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use core::fmt;
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/// The category of a maneuver error.
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///
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/// 机动错误的类别。
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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#[non_exhaustive]
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pub enum ManeuverErrorKind {
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/// A velocity change, acceleration, or duration is not finite.
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///
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/// 速度变化、加速度或时长非有限。
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NotFinite,
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/// The duration of a burn is not positive.
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///
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/// 点火时长不为正。
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NonPositiveDuration,
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/// The acceleration of a burn is not positive.
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///
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/// 点火加速度不为正。
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NonPositiveAcceleration,
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/// A radius is not finite or not positive.
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///
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/// 某半径非有限或不为正。
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InvalidRadius,
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/// The two radii of a transfer are equal, so there is nothing to do.
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///
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/// 转移的两个半径相等，因而无事可做。
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DegenerateTransfer,
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/// A state is missing the data the operation needs.
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///
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/// 某状态缺少该运算所需的数据。
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InvalidState,
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}
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impl fmt::Display for ManeuverErrorKind {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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let text = match self {
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Self::NotFinite => "a value is not finite",
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Self::NonPositiveDuration => "the duration is not positive",
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Self::NonPositiveAcceleration => "the acceleration is not positive",
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Self::InvalidRadius => "the radius is not usable",
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Self::DegenerateTransfer => "the two radii are equal",
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Self::InvalidState => "the state is not usable",
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};
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f.write_str(text)
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}
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}
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/// A failure while building or applying a maneuver.
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///
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/// 构建或应用机动时发生的失败。
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub struct ManeuverError {
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kind: ManeuverErrorKind,
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detail: Option<String>,
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}
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impl ManeuverError {
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/// Creates an error with the given category.
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///
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/// 用给定类别创建一个错误。
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#[must_use]
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pub fn new(kind: ManeuverErrorKind) -> Self {
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Self { kind, detail: None }
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}
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/// Attaches a description of the value that caused the failure.
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///
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/// 附加对该失败所涉数值的说明。
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#[must_use]
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pub fn with_detail(mut self, detail: impl Into<String>) -> Self {
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self.detail = Some(detail.into());
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self
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}
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/// Returns the category of this failure.
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///
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/// 返回该失败的类别。
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#[must_use]
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pub const fn kind(&self) -> ManeuverErrorKind {
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self.kind
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}
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/// Returns the detail text attached to this error, if any.
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///
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/// 返回附加在该错误上的说明文本，若有。
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#[must_use]
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pub fn detail(&self) -> Option<&str> {
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self.detail.as_deref()
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}
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}
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impl fmt::Display for ManeuverError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match &self.detail {
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Some(detail) => write!(f, "{}: {detail}", self.kind),
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None => write!(f, "{}", self.kind),
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}
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}
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}
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impl core::error::Error for ManeuverError {}
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