Enum NixValue 

pub enum NixValue {
    Int(i64),
    Float(f64),
    Bool(bool),
    Str(String),
    Path(String),
    Null,
    List(Vec<NixValue>),
    AttrSet(Vec<(String, NixValue)>),
    Closure(NixPattern, Box<NixExpr>),
    Thunk(Box<NixExpr>),
    Derivation(Box<NixValue>),
}

A simplified Nix runtime value, for evaluation / interpretation stubs.

Variants

Int(i64)

Integer value.

Float(f64)

Float value.

Bool(bool)

Boolean value.

Str(String)

String value.

Path(String)

Path value (stored as string internally).

Null

Null value.

List(Vec<NixValue>)

List of values.

AttrSet(Vec<(String, NixValue)>)

Attribute set mapping strings to values.

Closure(NixPattern, Box<NixExpr>)

Closure (unevaluated lambda).

Thunk(Box<NixExpr>)

Thunk (unevaluated expression, lazy evaluation placeholder).

Derivation(Box<NixValue>)

Derivation placeholder.

Implementations

impl NixValue

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

Return the Nix type tag string for this value.

pub fn is_truthy(&self) -> bool

Check if this value is truthy in a boolean context.

pub fn get_attr(&self, key: &str) -> Option<&NixValue>

Try to get an attribute from an AttrSet value.

pub fn to_expr(&self) -> NixExpr

Convert this value to a Nix expression (for round-tripping).

Trait Implementations

impl Clone for NixValue

fn clone(&self) -> NixValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NixValue

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

Formats the value using the given formatter.

impl Display for NixValue

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

Formats the value using the given formatter.

impl PartialEq for NixValue

fn eq(&self, other: &NixValue) -> 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 StructuralPartialEq for NixValue