Struct Context 

pub struct Context { /* private fields */ }

Context that is passed while evaluating an AST by an Evaluator.

Contains all variables and states that can be shared between functions during evaluations. Functions should be free to store any state that will be shared between function invocations.

Variables are stored in a map, keys are Strings and values are also Strings. State is stored in a heterogeneous container, which means that is accepts any struct. Structs in this store are identifier by their TypeId.

Implementations

impl Context

pub fn empty() -> Context

pub fn with_variables(variables: HashMap<String, String>) -> Context

pub fn set_variable(&mut self, name: &str, value: &str)

pub fn get_variable(&self, name: &str) -> Option<&String>

pub fn save_state<T: Any>(&mut self, state: T)

pub fn get_state<T: Any>(&self) -> Option<&T>