Enum rust_lisp::model::Value

pub enum Value {
    True,
    False,
    Int(IntType),
    Float(FloatType),
    String(String),
    Symbol(Symbol),
    List(List),
    HashMap(HashMapRc),
    NativeFunc(NativeFunc),
    NativeClosure(Rc<RefCell<dyn FnMut(Rc<RefCell<Env>>, Vec<Value>) -> Result<Value, RuntimeError>>>),
    Lambda(Lambda),
    Macro(Lambda),
    Foreign(Rc<dyn Any>),
    TailCall {
        func: Rc<Value>,
        args: Vec<Value>,
    },
}

Value encompasses all possible Lisp values, including atoms, lists, and others.

Variants

True

False

Int(IntType)

Float(FloatType)

String(String)

Symbol(Symbol)

List(List)

HashMap(HashMapRc)

NativeFunc(NativeFunc)

A native Rust function that can be called from lisp code

NativeClosure(Rc<RefCell<dyn FnMut(Rc<RefCell<Env>>, Vec<Value>) -> Result<Value, RuntimeError>>>)

A native Rust closure that can be called from lisp code (the closure can capture things from its Rust environment)

Lambda(Lambda)

A lisp function defined in lisp

Macro(Lambda)

A lisp macro defined in lisp

Foreign(Rc<dyn Any>)

A reference to a foreign value (struct, enum, etc)

TailCall

Fields

func: Rc<Value>

args: Vec<Value>

A tail-call that has yet to be executed. Internal use only!

Implementations

impl Value

pub const NIL: Value = _

pub fn type_name(&self) -> &'static str

Examples found in repository

src/interpreter.rs (line 321)

fn value_to_argnames(argnames: List) -> Result<Vec<Symbol>, RuntimeError> {
    argnames
        .into_iter()
        .enumerate()
        .map(|(index, arg)| match arg {
            Value::Symbol(s) => Ok(s),
            _ => Err(RuntimeError {
                msg: format!(
                    "Expected list of arg names, but arg {} is a {}",
                    index,
                    arg.type_name()
                ),
            }),
        })
        .collect()
}

Trait Implementations

impl Add<&Value> for &Value

type Output = Result<Value, ()>

The resulting type after applying the + operator.

fn add(self, other: &Value) -> Self::Output

Performs the + operation.

impl Add<Value> for Value

type Output = Result<Value, ()>

The resulting type after applying the + operator.

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

Performs the + operation.

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl Div<&Value> for &Value

type Output = Result<Value, ()>

The resulting type after applying the / operator.

fn div(self, other: &Value) -> Self::Output

Performs the / operation.

impl Div<Value> for Value

type Output = Result<Value, ()>

The resulting type after applying the / operator.

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

Performs the / operation.

impl From<&Value> for bool

fn from(value: &Value) -> Self

Converts to this type from the input type.

impl From<HashMap<Value, Value, RandomState>> for Value

fn from(i: HashMap<Value, Value>) -> Self

Converts to this type from the input type.

impl From<Lambda> for Value

fn from(i: Lambda) -> Self

Converts to this type from the input type.

impl From<List> for Value

fn from(i: List) -> Self

Converts to this type from the input type.

impl From<Rc<RefCell<HashMap<Value, Value, RandomState>>>> for Value

fn from(i: HashMapRc) -> Self

Converts to this type from the input type.

impl From<Rc<dyn Any + 'static>> for Value

fn from(i: Rc<dyn Any>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(i: String) -> Self

Converts to this type from the input type.

impl From<Symbol> for Value

fn from(i: Symbol) -> Self

Converts to this type from the input type.

impl From<Value> for bool

fn from(value: Value) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(b: bool) -> Self

Converts to this type from the input type.

impl From<f32> for Value

fn from(i: FloatType) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(i: IntType) -> Self

Converts to this type from the input type.

impl<'a> FromIterator<&'a Value> for List

fn from_iter<I: IntoIterator<Item = &'a Value>>(iter: I) -> Self

Creates a value from an iterator.

impl FromIterator<Value> for List

fn from_iter<I: IntoIterator<Item = Value>>(iter: I) -> Self

Creates a value from an iterator.

impl Hash for Value

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 Mul<&Value> for &Value

type Output = Result<Value, ()>

The resulting type after applying the * operator.

fn mul(self, other: &Value) -> Self::Output

Performs the * operation.

impl Mul<Value> for Value

type Output = Result<Value, ()>

The resulting type after applying the * operator.

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

Performs the * operation.

impl Ord for Value

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Value> for Value

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

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

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

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

impl PartialOrd<Value> for Value

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

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

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

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

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

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

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

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

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

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

impl Sub<&Value> for &Value

type Output = Result<Value, ()>

The resulting type after applying the - operator.

fn sub(self, other: &Value) -> Self::Output

Performs the - operation.

impl Sub<Value> for Value

type Output = Result<Value, ()>

The resulting type after applying the - operator.

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

Performs the - operation.

impl<'a> TryFrom<&'a Value> for &'a HashMapRc

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for &'a Lambda

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for &'a List

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for &'a Rc<dyn Any>

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for &'a String

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> TryFrom<&'a Value> for &'a Symbol

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for FloatType

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<&Value> for IntType

type Error = RuntimeError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Value