Enum ketree::tree::Expression

pub enum Expression<T: 'static + Clone + Debug> {
    Operator(fn(_: Vec<T>) -> T),
    Variable(String),
    Constant(T),
}

Enumerator for the types of data that a Tree vertex might contain.

Operator contains a function of fn(Vec) -> T, Variable contains a String, and Constant contains a type.

Variants

Operator(fn(_: Vec<T>) -> T)Variable(String)Constant(T)

Trait Implementations

impl<T: Clone + 'static + Clone + Debug> Clone for Expression<T>

fn clone(&self) -> Expression<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + 'static + Clone + Debug> Debug for Expression<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<T: 'static + Clone + Debug> ForeignValue for Expression<T>

fn type_name(&self) -> &'static str

Return the value's type name.

fn compare_to(
    &self,
    rhs: &(ForeignValue + 'static)
) -> Result<Ordering, ExecError>

Performs ordered comparison between two values of a foreign type.

fn compare_to_value(&self, rhs: &Value) -> Result<Ordering, ExecError>

Performs ordered comparison between two values.

fn is_identical_to(&self, rhs: &(ForeignValue + 'static)) -> bool

Returns whether the two values are identical. This concept is the same as equality, except in the case of floating point values, where two NaN values are considered identical.

fn is_equal_to(&self, rhs: &(ForeignValue + 'static)) -> Result<bool, ExecError>

Tests for equality between two values of a foreign type.

fn is_equal_to_value(&self, rhs: &Value) -> Result<bool, ExecError>

Tests for equality between two values.

fn fmt_debug(&self, names: &NameStore, f: &mut Formatter) -> Result<(), Error>

Format the value in debugging mode.

fn fmt_display(&self, names: &NameStore, f: &mut Formatter) -> Result<(), Error>

Format the value in display mode.

fn is_type(&self, name: &str) -> bool

Returns whether this value is of the named type.

fn call_value(&self, ctx: &Context, args: &mut [Value]) -> Result<Value, Error>

Calls the value as a function.

fn size(&self) -> usize

Returns an estimate of the memory held by this value.

impl<T: 'static + Clone + Debug> FromValue for Expression<T>

fn from_value(v: Value) -> Result<Self, ExecError>

Consumes the Value and returns a Rust value

impl<'value, T: 'static + Clone + Debug> FromValueRef<'value> for &'value Expression<T>

fn from_value_ref(v: &'value Value) -> Result<Self, ExecError>

Returns the borrowed value