Trait FeatureConstraint 

pub trait FeatureConstraint: Send + Sync {
    // Required method
    fn evaluate(
        &self,
        move_ctx: &MoveContext<'_>,
    ) -> Option<ConstraintViolation>;

    // Provided method
    fn merge(&self, _source: Job, _candidate: Job) -> Result<Job, ViolationCode> { ... }
}

Defines feature constraint behavior.

Required Methods

fn evaluate(&self, move_ctx: &MoveContext<'_>) -> Option<ConstraintViolation>

Evaluates hard constraints violations.

Provided Methods

fn merge(&self, _source: Job, _candidate: Job) -> Result<Job, ViolationCode>

Tries to merge two jobs taking into account common constraints. Returns a new job, if it is possible to merge them having a theoretically assignable job. Otherwise, returns violation error code. Default implementation returns an error with default ViolationCode.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors