Enum Expression

pub enum Expression<Real> {
    Boolean(BoolExpression<Real>),
    Real(RealExpression<Real>),
    String(StringExpression),
}

Top-level parseable calculation.

Variants

Boolean(BoolExpression<Real>)

Real(RealExpression<Real>)

String(StringExpression)

Implementations

impl<Real: Float + FromStr> Expression<Real>

pub fn unwrap_real(self) -> RealExpression<Real>

Assume this expression is real-valued.

pub fn unwrap_string(self) -> StringExpression

Assume this expression is string-valued.

pub fn unwrap_bool(self) -> BoolExpression<Real>

Assume this expression is boolean-valued.

pub fn parse_real_variable_names( input: &str, ) -> Result<HashSet<String>, ParseError>

pub fn parse_string_variable_names( input: &str, ) -> Result<HashSet<String>, ParseError>

pub fn parse( input: &str, binding_map: impl Fn(&str) -> BindingId, ) -> Result<Self, ParseError>

Parse the expression from input.

binding_map determines which variable name maps to each data binding. As variable names are encountered during parsing, they are replaced by BindingIds in the Expression syntax tree. This allows the Expression to be efficiently reused with many different data bindings.

Trait Implementations

impl<Real: Clone> Clone for Expression<Real>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Real: Debug> Debug for Expression<Real>

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

Formats the value using the given formatter.