Struct ketree::tree::Tree

pub struct Tree<T: 'static + Sized + Clone + Debug> { /* fields omitted */ }

A Tree that represents a symbolic expression that can be constructed with Ketos.

Methods

impl<T: 'static + Sized + Clone + Debug> Tree<T>

fn new(ex: Expression<T>) -> Tree<T>

Constructor to create a Tree vertex with data.

fn accumulate(&self, vars: &HashMap<String, T>) -> Result<T, TreeError>

Evaluates the tree with the provided map of variables.

'vars' should be any HashMap that maps Variables in the tree to values.

fn link(&mut self, b: Vec<Tree<T>>)

Links the provided Vector of Trees as branches to self.

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

Returns a reference to contained data.

fn children(&self) -> &Option<Vec<Tree<T>>>

Returns a reference to contained children.

fn post_iter(&self) -> TreePostIter<T>

Returns a TreePostIter for the tree.

Trait Implementations

impl<T: Clone + 'static + Sized + Clone + Debug> Clone for Tree<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + 'static + Sized + Clone + Debug> Debug for Tree<T>

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

Formats the value using the given formatter.

impl<T: 'static + Sized + Clone + Debug> ForeignValue for Tree<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 + Sized + Clone + Debug> FromValue for Tree<T>

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

Consumes the Value and returns a Rust value

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

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

Returns the borrowed value

impl<T: 'static + Sized + Clone + Debug> StructValue for Tree<T>

fn struct_name() -> &'static str

Returns the struct name.

fn from_fields(
    scope: &Scope,
    def: &Rc<StructDef>,
    fields: &mut [(Name, Value)]
) -> Result<Self, Error>

Creates a value from a list of fields.

fn field_names() -> &'static [&'static str]

Returns a list of field names.

fn get_field(
    &self,
    scope: &Scope,
    def: &Rc<StructDef>,
    name: Name
) -> Result<Value, Error>

Returns a copy of a field as a Ketos Value.

fn replace_fields(
    &mut self,
    scope: &Scope,
    def: &Rc<StructDef>,
    fields: &mut [(Name, Value)]
) -> Result<(), Error>

Modifies the value to replace named fields with provided values.