Trait CardTrait 

pub trait CardTrait {
    // Required method
    fn base(&self) -> &CardTraitBase;

    // Provided methods
    fn resolve_source_player(&self, src_card: &Card) -> PlayerId { ... }
    fn matches_valid(
        &self,
        target: &MatchValidTarget<'_>,
        valids: &[&str],
        src_card: Option<&Card>,
    ) -> bool { ... }
    fn matches_compiled_valid(
        &self,
        target: &MatchValidTarget<'_>,
        selector: &CompiledSelector,
        src_card: Option<&Card>,
    ) -> bool { ... }
    fn matches_valid_param(
        &self,
        param: &str,
        target: &MatchValidTarget<'_>,
        src_card: Option<&Card>,
    ) -> bool { ... }
    fn matches_valid_card(&self, expr: &str, card: &Card, source: &Card) -> bool { ... }
    fn matches_compiled_valid_card(
        &self,
        selector: &CompiledSelector,
        card: &Card,
        source: &Card,
    ) -> bool { ... }
    fn matches_valid_player(
        &self,
        expr: &str,
        player: PlayerId,
        source: &Card,
    ) -> bool { ... }
    fn matches_compiled_valid_player(
        &self,
        selector: &CompiledSelector,
        player: PlayerId,
        source: &Card,
    ) -> bool { ... }
}

Polymorphic facade over CardTraitBase — the Rust stand-in for Java’s inheritance chain where Trigger, ReplacementEffect, and StaticAbility extend CardTraitBase. Because Rust structs have no virtual methods, the this instanceof Trigger self-type dispatch in Java’s matchesValid is expressed here as the resolve_source_player hook: the default returns src_card.controller, and Trigger overrides it to consult its spawning ability’s activating player.

Required Methods

fn base(&self) -> &CardTraitBase

Borrow the underlying CardTraitBase. Implementors own a CardTraitBase (directly or transitively) and return a reference.

Provided Methods

fn resolve_source_player(&self, src_card: &Card) -> PlayerId

Resolves the player whose perspective is used for Valid$ expressions. Default matches Java’s base behavior (source card’s controller). Trigger overrides — mirrors this instanceof Trigger in Java CardTraitBase.matchesValid(Object, String[], Card) at line 214.

fn matches_valid( &self, target: &MatchValidTarget<'_>, valids: &[&str], src_card: Option<&Card>, ) -> bool

Mirrors matchesValid(Object, String[], Card).

fn matches_compiled_valid( &self, target: &MatchValidTarget<'_>, selector: &CompiledSelector, src_card: Option<&Card>, ) -> bool

fn matches_valid_param( &self, param: &str, target: &MatchValidTarget<'_>, src_card: Option<&Card>, ) -> bool

fn matches_valid_card(&self, expr: &str, card: &Card, source: &Card) -> bool

Ergonomic comma-separated-expression wrapper over matches_valid for card targets. Mirrors Java’s matchesValid(Object, String[], Card) call pattern where valids is often a single comma-separated string (e.g. "Creature.YouCtrl,Artifact").

fn matches_compiled_valid_card( &self, selector: &CompiledSelector, card: &Card, source: &Card, ) -> bool

fn matches_valid_player( &self, expr: &str, player: PlayerId, source: &Card, ) -> bool

Ergonomic comma-separated-expression wrapper over matches_valid for player targets.

fn matches_compiled_valid_player( &self, selector: &CompiledSelector, player: PlayerId, source: &Card, ) -> bool

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl CardTrait for CardTraitBase

impl CardTrait for ReplacementEffect

impl CardTrait for StaticAbility

impl CardTrait for Trigger

Mirrors Java’s Trigger extends CardTraitBase override of matchesValid: when this instanceof Trigger and a spawning ability is present, the source player resolves to the spawning ability’s activating player rather than the source card’s controller.