Struct callisp::env::Environment

pub struct Environment { /* private fields */ }

The environment that expressions are evaluated in.

Implementations

impl Environment

pub fn with_binds(bindings: HashMap<String, Ast>) -> Self

Create an environment with the specified bindings at the outermost scope.

pub fn outer_new() -> Self

Create an environment with the bindings for all builtins.

pub fn new_scope(&mut self, bindings: HashMap<String, Ast>)

Add an empty scope to the environment.

pub fn pop_scope(&mut self)

Remove the top scope from the environment.

pub fn get(&self, binding: &str) -> Option<Ast>

Get the Ast matching a string stored in the bindings of the environment.

pub fn bind(&mut self, binding: String, value: Ast)

Set a new binding in the environment. Will overwrite current binding if one exists.

TODO: Don’t overwrite binding.

Trait Implementations

impl From<Environment> for JsValue

fn from(value: Environment) -> Self

Converts to this type from the input type.

impl FromWasmAbi for Environment

type Abi = u32

The wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl IntoWasmAbi for Environment

type Abi = u32

The wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl OptionFromWasmAbi for Environment

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for Environment

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl RefFromWasmAbi for Environment

type Abi = u32

The wasm ABI type references to Self are recovered from.

type Anchor = Ref<'static, Environment>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi.

impl RefMutFromWasmAbi for Environment

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RefMut<'static, Environment>

Same as RefFromWasmAbi::Anchor

unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl WasmDescribe for Environment

fn describe()