Enum Value

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pub enum Value {
Show 14 variants 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>, },
}
Expand description

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

Variants§

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True

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False

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Int(IntType)

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Float(FloatType)

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String(String)

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Symbol(Symbol)

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List(List)

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HashMap(HashMapRc)

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NativeFunc(NativeFunc)

A native Rust function that can be called from lisp code

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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)

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Lambda(Lambda)

A lisp function defined in lisp

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Macro(Lambda)

A lisp macro defined in lisp

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Foreign(Rc<dyn Any>)

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

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TailCall

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

Fields

§func: Rc<Value>
§args: Vec<Value>

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impl Value

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pub const NIL: Value

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

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impl Add<&Value> for &Value

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type Output = Result<Value, ()>

The resulting type after applying the + operator.
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fn add(self, other: &Value) -> Self::Output

Performs the + operation. Read more
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impl Add for Value

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type Output = Result<Value, ()>

The resulting type after applying the + operator.
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fn add(self, other: Value) -> Self::Output

Performs the + operation. Read more
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impl Clone for Value

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fn clone(&self) -> Value

Returns a duplicate of the value. Read more
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const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Value

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

Formats the value using the given formatter. Read more
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impl Display for Value

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

Formats the value using the given formatter. Read more
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impl Div<&Value> for &Value

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type Output = Result<Value, ()>

The resulting type after applying the / operator.
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fn div(self, other: &Value) -> Self::Output

Performs the / operation. Read more
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impl Div for Value

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type Output = Result<Value, ()>

The resulting type after applying the / operator.
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fn div(self, other: Value) -> Self::Output

Performs the / operation. Read more
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impl From<&Value> for bool

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fn from(value: &Value) -> Self

Converts to this type from the input type.
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impl From<HashMap<Value, Value>> for Value

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

Converts to this type from the input type.
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impl From<Lambda> for Value

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fn from(i: Lambda) -> Self

Converts to this type from the input type.
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impl From<List> for Value

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fn from(i: List) -> Self

Converts to this type from the input type.
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impl From<Rc<RefCell<HashMap<Value, Value>>>> for Value

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fn from(i: HashMapRc) -> Self

Converts to this type from the input type.
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impl From<Rc<dyn Any>> for Value

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

Converts to this type from the input type.
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impl From<String> for Value

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fn from(i: String) -> Self

Converts to this type from the input type.
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impl From<Symbol> for Value

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fn from(i: Symbol) -> Self

Converts to this type from the input type.
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impl From<Value> for bool

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fn from(value: Value) -> Self

Converts to this type from the input type.
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impl From<bool> for Value

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fn from(b: bool) -> Self

Converts to this type from the input type.
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impl From<f32> for Value

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fn from(i: FloatType) -> Self

Converts to this type from the input type.
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impl From<i32> for Value

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fn from(i: IntType) -> Self

Converts to this type from the input type.
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impl<'a> FromIterator<&'a Value> for List

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

Creates a value from an iterator. Read more
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impl FromIterator<Value> for List

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

Creates a value from an iterator. Read more
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impl Hash for Value

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Mul<&Value> for &Value

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type Output = Result<Value, ()>

The resulting type after applying the * operator.
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fn mul(self, other: &Value) -> Self::Output

Performs the * operation. Read more
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impl Mul for Value

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type Output = Result<Value, ()>

The resulting type after applying the * operator.
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fn mul(self, other: Value) -> Self::Output

Performs the * operation. Read more
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impl Ord for Value

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for Value

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Sub<&Value> for &Value

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type Output = Result<Value, ()>

The resulting type after applying the - operator.
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fn sub(self, other: &Value) -> Self::Output

Performs the - operation. Read more
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impl Sub for Value

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type Output = Result<Value, ()>

The resulting type after applying the - operator.
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fn sub(self, other: Value) -> Self::Output

Performs the - operation. Read more
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impl<'a> TryFrom<&'a Value> for &'a Lambda

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a Value> for &'a List

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a Value> for &'a HashMapRc

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a Value> for &'a Rc<dyn Any>

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a Value> for &'a String

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a Value> for &'a Symbol

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &'a Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<&Value> for FloatType

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<&Value> for IntType

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type Error = RuntimeError

The type returned in the event of a conversion error.
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fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.
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impl Eq for Value

Auto Trait Implementations§

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impl Freeze for Value

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impl !RefUnwindSafe for Value

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impl !Send for Value

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impl !Sync for Value

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impl Unpin for Value

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impl !UnwindSafe for Value

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.