Enum Expression

pub enum Expression {
    Group(Box<Self>),
    Symbol(String),
    Integer(Int),
    Float(f64),
    Bytes(Vec<u8>),
    String(String),
    Boolean(bool),
    List(Vec<Self>),
    Map(BTreeMap<String, Self>),
    None,
    Assign(String, Box<Self>),
    For(String, Box<Self>, Box<Self>),
    If(Box<Self>, Box<Self>, Box<Self>),
    Apply(Box<Self>, Vec<Self>),
    Lambda(String, Box<Self>, Environment),
    Macro(String, Box<Self>),
    Do(Vec<Self>),
    Builtin(Builtin),
    Quote(Box<Self>),
}

Variants

Group(Box<Self>)

Symbol(String)

Integer(Int)

Float(f64)

Bytes(Vec<u8>)

String(String)

Boolean(bool)

List(Vec<Self>)

Map(BTreeMap<String, Self>)

None

Assign(String, Box<Self>)

For(String, Box<Self>, Box<Self>)

If(Box<Self>, Box<Self>, Box<Self>)

Apply(Box<Self>, Vec<Self>)

Lambda(String, Box<Self>, Environment)

Macro(String, Box<Self>)

Do(Vec<Self>)

Builtin(Builtin)

Quote(Box<Self>)

Implementations

impl Expression

pub fn builtin( name: impl ToString, body: fn(Vec<Self>, &mut Environment) -> Result<Self, Error>, help: impl ToString, ) -> Self

pub fn new(x: impl Into<Self>) -> Self

pub fn apply(self, args: Vec<Self>) -> Self

pub fn is_truthy(&self) -> bool

pub fn flatten(args: Vec<Self>) -> Vec<Self>

pub fn eval(&self, env: &mut Environment) -> Result<Self, Error>

Trait Implementations

impl Add for Expression

type Output = Expression

The resulting type after applying the + operator.

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

Performs the + operation.

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 Div for Expression

type Output = Expression

The resulting type after applying the / operator.

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

Performs the / operation.

impl From<&str> for Expression

fn from(x: &str) -> Self

Converts to this type from the input type.

impl<T> From<BTreeMap<String, T>> for Expression

where T: Into<Self>,

fn from(map: BTreeMap<String, T>) -> Self

Converts to this type from the input type.

impl From<String> for Expression

fn from(x: String) -> Self

Converts to this type from the input type.

impl<T> From<Vec<T>> for Expression

where T: Into<Self>,

fn from(list: Vec<T>) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Expression

fn from(x: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Expression

fn from(x: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Expression

fn from(x: f64) -> Self

Converts to this type from the input type.

impl From<i64> for Expression

fn from(x: Int) -> Self

Converts to this type from the input type.

impl<T> Index<T> for Expression

where T: Into<Self>,

type Output = Expression

The returned type after indexing.

fn index(&self, idx: T) -> &Self

Performs the indexing (container[index]) operation.

impl Mul for Expression

type Output = Expression

The resulting type after applying the * operator.

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

Performs the * operation.

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: &Self) -> 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 Rem for Expression

type Output = Expression

The resulting type after applying the % operator.

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

Performs the % operation.

impl Sub for Expression

type Output = Expression

The resulting type after applying the - operator.

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

Performs the - operation.

impl StructuralPartialEq for Expression