Struct FunctionRegistry

pub struct FunctionRegistry<'a> {
    pub native_functions: HashMap<String, NativeFunction<'a>>,
    pub expression_functions: HashMap<String, ExpressionFunction>,
    pub user_functions: HashMap<String, UserFunction>,
}

Registry for different types of functions available in an evaluation context.

This struct holds three types of functions:

1. Native functions: Rust functions that can be called from expressions
2. Expression functions: Functions defined using expression strings
3. User functions: Functions defined by the user with custom behavior

This is an internal implementation detail and users typically don’t interact with it directly.

Fields

native_functions: HashMap<String, NativeFunction<'a>>

Native functions implemented in Rust code

expression_functions: HashMap<String, ExpressionFunction>

Functions defined using expression strings

user_functions: HashMap<String, UserFunction>

User-defined functions with custom behavior

Trait Implementations

impl<'a> Clone for FunctionRegistry<'a>

fn clone(&self) -> FunctionRegistry<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Default for FunctionRegistry<'a>

fn default() -> FunctionRegistry<'a>

Returns the “default value” for a type.