Trait ExprContext

pub trait ExprContext<T = DefaultTypeSet>
where
    T: TypeSet,
    T::Integer: ValueType,
    T::Float: ValueType,
{
    // Required methods
    fn intern_string(&mut self, s: &str) -> StringIndex;
    fn load_interned_string(&self, idx: StringIndex) -> &str;
    fn try_load_variable(&self, variable: &str) -> Option<TypedValue<T>>;
    fn address_of(&self, variable: &str) -> TypedValue<T>;
    fn call_function(
        &mut self,
        function_name: &str,
        args: &[TypedValue<T>],
    ) -> Result<TypedValue<T>, FunctionCallError>;
}

An expression context that provides the necessary environment for evaluating expressions.

Required Methods

fn intern_string(&mut self, s: &str) -> StringIndex

Implements string interning.

fn load_interned_string(&self, idx: StringIndex) -> &str

Loads an interned string.

fn try_load_variable(&self, variable: &str) -> Option<TypedValue<T>>

Attempts to load a variable from the context.

fn address_of(&self, variable: &str) -> TypedValue<T>

Returns the address of a variable in the context.

fn call_function( &mut self, function_name: &str, args: &[TypedValue<T>], ) -> Result<TypedValue<T>, FunctionCallError>

Calls a function in the context.

Implementors

impl<T> ExprContext<T> for Context<'_, T>

where T: TypeSet, T::Integer: Load<T> + Store<T> + Integer, T::Float: Load<T> + Store<T>, T::SignedInteger: Load<T> + Store<T>,