Struct CFunctionContext 

pub struct CFunctionContext {
    pub result: Option<Value>,
    pub error: Option<String>,
    pub aggregate_state: Option<Box<dyn Any + Send>>,
    pub user_data: usize,
    pub argc: usize,
    pub argv: Vec<linkrs_value_t>,
}

C Function Context Structure (Opaque Pointers)

Fields

result: Option<Value>

Result value

error: Option<String>

Error message

aggregate_state: Option<Box<dyn Any + Send>>

Aggregation status (used for aggregate functions)

user_data: usize

User data pointer

argc: usize

Number of parameters

argv: Vec<linkrs_value_t>

Parameter array (converted to C API format)

Implementations

impl CFunctionContext

pub fn new() -> Self

pub fn with_user_data(user_data: usize) -> Self

pub fn set_result(&mut self, value: Value)

pub fn set_error(&mut self, error: String)

pub fn set_aggregate_state<T: Any + Send + 'static>(&mut self, state: T)

Set the aggregation status

pub fn get_aggregate_state<T: Any + Send + 'static>(&self) -> Option<&T>

Obtain the aggregated status.

pub fn get_aggregate_state_mut<T: Any + Send + 'static>( &mut self, ) -> Option<&mut T>

Obtain a variable reference to the aggregated status

Trait Implementations

impl Default for CFunctionContext

fn default() -> Self

Returns the “default value” for a type.