Enum Expression 

pub enum Expression {
    Expression(Box<Self>),
    Macro(ExpressionMacroInvocation),
    Terminal(Terminal),
    Plus(Box<Self>, Box<Self>),
    Minus(Box<Self>, Box<Self>),
    Times(Box<Self>, Box<Self>),
    Divide(Box<Self>, Box<Self>),
}

A mathematical expression.

Variants

Expression(Box<Self>)

A mathematical expression.

Macro(ExpressionMacroInvocation)

An expression macro invocation.

Terminal(Terminal)

A terminal value.

Plus(Box<Self>, Box<Self>)

An addition operation.

Minus(Box<Self>, Box<Self>)

A subtraction operation.

Times(Box<Self>, Box<Self>)

A multiplication operation.

Divide(Box<Self>, Box<Self>)

A division operation.

Implementations

impl Expression

pub fn eval(&self) -> Result<BigInt, Error>

Returns the constant value of the expression.

pub fn eval_with_context(&self, ctx: Context<'_>) -> Result<BigInt, Error>

Evaluates the expression given a certain Context.

pub fn labels( &self, macros: &HashMap<String, MacroDefinition>, ) -> Result<Vec<String>, Error>

Returns a list of all labels used in the expression.

pub fn replace_label(&mut self, old: &str, new: &str)

Replaces all instances of old with new in the expression.

pub fn fill_variable(&mut self, var: &str, expr: &Expression)

Replaces all instances of var with expr in the expression.

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expression

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

Formats the value using the given formatter.

impl Display for Expression

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

Formats the value using the given formatter.

impl From<BigInt> for Box<Expression>

fn from(n: BigInt) -> Self

Converts to this type from the input type.

impl From<BigInt> for Expression

fn from(n: BigInt) -> Self

Converts to this type from the input type.

impl From<Expression> for Imm

fn from(tree: Expression) -> Self

Converts to this type from the input type.

impl From<Terminal> for Box<Expression>

fn from(terminal: Terminal) -> Self

Converts to this type from the input type.

impl From<Terminal> for Expression

fn from(terminal: Terminal) -> Self

Converts to this type from the input type.

impl From<u64> for Box<Expression>

fn from(n: u64) -> Self

Converts to this type from the input type.

impl Hash for Expression

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Expression

fn cmp(&self, other: &Expression) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Expression

fn eq(&self, other: &Expression) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Expression

fn partial_cmp(&self, other: &Expression) -> Option<Ordering>

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

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

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

impl Eq for Expression

impl StructuralPartialEq for Expression