Struct Interpreter 

pub struct Interpreter { /* private fields */ }

Implementations

impl Interpreter

pub fn new() -> Self

pub fn new_with_system() -> Self

Interpreter with both pure builtins AND system-effects built in (println/sleep/exit/env/read-file/write-file/shell). Call this from host-side embedders like tatara-init --eval; leave sealed terreiros using new() so they stay I/O-free.

pub fn eval_source(&self, src: &str) -> Result<Value>

Evaluate a single source string. Returns the value of the last form.

pub fn eval_forms(&self, forms: &[Sexp]) -> Result<Value>

pub fn root_env(&self) -> Env

pub fn define(&self, name: impl Into<String>, value: Value)

Install a binding in the top-level environment.

pub fn eval(&self, s: &Sexp, env: &Env) -> Result<Value>

pub fn apply(&self, f: &Value, args: &[Value]) -> Result<Value>

pub fn force(&self, v: Value) -> Result<Value>

Force a thunk, or return the value unchanged if it already is one.

Trait Implementations

impl Default for Interpreter

fn default() -> Self

Returns the “default value” for a type.