Enum GameError

#[non_exhaustive]
pub enum GameError {
    EmptyChance,
    NonPositiveChance,
    ProbabilitiesNotEqual,
    ImperfectRecall,
    EmptyPlayer,
    ActionsNotEqual,
    ActionsNotUnique,
}

Errors that result from game definition errors

If the object passed into Game::from_root doesn’t conform to necessary invariants, one of these will be returned.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EmptyChance

Returned when a chance node has no outcomes

NonPositiveChance

Returned when a chance node has an outcome with a non-positive probability of happening

ProbabilitiesNotEqual

Returned when a chance node has different probabilities than another node in its infoset

ImperfectRecall

Returned when a game’s infosets don’t exhibit perfect recall

If a game does have perfect recall, then a player’s infosets must form a tree, that is for all game nodes with a given infoset, the infoset of the player’s previous action must be identical. We ignore this criterion for single action infosets since they don’t actually reflect a decision.

EmptyPlayer

Returned when a player node has no actions

ActionsNotEqual

Returned when the actions of a player node didn’t match the order and values of an earlier information set.

Make sure that all nodes with the same player and information set also have the same actions in the same order.

ActionsNotUnique

Returned when the actions of a player node weren’t unique.

Make sure that all actions of a player node are unique.

Trait Implementations

impl Clone for GameError

fn clone(&self) -> GameError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GameError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for GameError

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result<(), FmtError>

Formats the value using the given formatter.

impl Error for GameError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for GameError

fn eq(&self, other: &GameError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for GameError

impl Eq for GameError

impl StructuralPartialEq for GameError