Struct mentat_query::Variable

pub struct Variable(pub Rc<PlainSymbol>);

Methods

impl Variable

pub fn as_str(&self) -> &str

pub fn to_string(&self) -> String

pub fn name(&self) -> PlainSymbol

pub fn from_valid_name(name: &str) -> Variable

Return a new Variable, assuming that the provided string is a valid name.

impl Variable

pub fn from_rc(sym: Rc<PlainSymbol>) -> Option<Variable>

pub fn from_symbol(sym: &PlainSymbol) -> Option<Variable>

TODO: intern strings. #398.

Trait Implementations

impl Clone for Variable

fn clone(&self) -> Variable

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq for Variable

fn eq(&self, __arg_0: &Variable) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Variable) -> bool

This method tests for !=.

impl Eq for Variable

impl Hash for Variable

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl PartialOrd for Variable

fn partial_cmp(&self, __arg_0: &Variable) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, __arg_0: &Variable) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, __arg_0: &Variable) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, __arg_0: &Variable) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, __arg_0: &Variable) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Ord for Variable

fn cmp(&self, __arg_0: &Variable) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl FromValue<Variable> for Variable

If the provided EDN value is a PlainSymbol beginning with '?', return it wrapped in a Variable. If not, return None. TODO: intern strings. #398.

fn from_value(v: &ValueAndSpan) -> Option<Variable>

impl Debug for Variable

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

Formats the value using the given formatter.

impl Display for Variable

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

Formats the value using the given formatter.

impl From<Variable> for Element

fn from(x: Variable) -> Element

Performs the conversion.