Enum Procedure 

pub enum Procedure {
    Primitive {
        name: &'static str,
        func: fn(&[Value]) -> Result<Value, String>,
    },
    Lambda {
        params: Gc<Vec<String>>,
        body: Gc<Value>,
        env: Gc<Environment>,
        source: Option<SourceInfo>,
        name: Option<String>,
    },
}

Procedure (function)

Can be either a built-in primitive or user-defined lambda.

Variants

Primitive

Built-in primitive function

Takes arguments and returns a result. Primitives can fail (return Err) or succeed (return Ok(Value)).

Fields

name: &'static str

func: fn(&[Value]) -> Result<Value, String>

Lambda

User-defined lambda

Captures:

• params: Parameter names (formal parameters)
• body: Expression to evaluate when called
• env: Closure environment (captures lexical scope)
• source: Source location (for error reporting)
• name: Optional name (for named procedures defined with define)

Fields

params: Gc<Vec<String>>

body: Gc<Value>

env: Gc<Environment>

source: Option<SourceInfo>

name: Option<String>

Trait Implementations

impl Clone for Procedure

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Finalize for Procedure

fn finalize(&self)

impl Trace for Procedure

unsafe fn trace(&self)

Marks all contained Gcs.

unsafe fn root(&self)

Increments the root-count of all contained Gcs.

unsafe fn unroot(&self)

Decrements the root-count of all contained Gcs.

fn finalize_glue(&self)

Runs Finalize::finalize() on this object and all contained subobjects