Trait VariableDefinition

Source

pub trait VariableDefinition {
    type VariableType: VariableType;
    type Directives: ConstDirectives;
    type Value: ConstValue;

    // Required methods
    fn variable(&self) -> &str;
    fn type(&self) -> &Self::VariableType;
    fn directives(&self) -> Option<&Self::Directives>;
    fn default_value(&self) -> Option<&Self::Value>;

    // Provided method
    fn is_required(&self) -> bool { ... }
}